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  • Newsletter June 2014
 
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NEWSLETTER 06/2014 17.06.2014

 
Please acknowledge use of the database www.shark-references.com in your publications, and cite: 

Pollerspöck, J. 2014, Bibliography database of living/fossil sharks, rays and chimaeras (Chondrichtyes: Elasmobranchii, Holocephali), www.shark-references.com, World Wide Web electronic publication, Version 2014
 

PARTNERS OF SHARK-REFERENCES:


Would you like to become a shark-reference partner? Please contanct me per E-mail!

New Partner:
 
  • Association Stellaris - ACQUISITION DE CONNAISSANCES SUR LES ESPÈCES MARINES SENSIBLES (Homepage)
  • Australian Shark Information System (ASIS) (Homepage)
  • Sharklab International, 404 Sqaq Il Forn, HMR 1961 Il-Hamrun, Malta (Homepage: Sharklab Malta/Sharklab Adria/facebook)
 

         Partner in Google-Maps:                           

 

 

NEWS OF SHARK-REFERENCES:

Own research:


 

POLLERSPÖCK, J. & BEAURY, B. 2014 Eine Elasmobranchierfauna (Elasmobranchii, Neoselachii) aus der Oberen Meeresmolasse (Ottnangium, Unteres Miozän) des Heigelsberger Grabens bei Teisendorf, Oberbayern. [A Miocene elasmobranch fauna (Elasmobranchii, Neoselachii) from the Upper Marine Molasse of Upper Bavaria (Heigelsberger Ditch, Teisendorf, Bavaria)]. Zitteliana, A54: 23-37

http://www.palmuc.de/bspg/images/pdf/zitteliana54/3_pollerspoeck.pdf

Abstract: A rich assemblage of elasmobranch teeth of Early Miocene age (Ottnangian, Upper Marine Molasse) is described from the Heigelsberger Ditch near Teisendorf (Upper Bavaria, Germany). The fauna includes 13 shark and 4 batoid species, including Centrophorus cf. granulosus, Isistius triangulus, Squalus sp., Pristiophorus suevicus, Squatina sp., Mitsukurina lineata, Alopias exigua, Carcharhinus priscus, Hemipristis serra, Chaenogaleus affinis, Iago angustidens, Premontreia sp., Carcharias acutissimus, Raja sp., Dasyatis rugosa, Dasyatis probsti, and Myliobatis sp., which are reported for the first time from the Upper Bavarian part of the Subalpine Molasse Basin.

 
 

 

Australian Shark Information System

 

ASIS forms collaboration with Shark References database

 

May 28, 2014

 
 
 
 

ASIS will be using the extensive literature collection contained in the online database Shark References. Jürgen Pollerspöck is the curator of this extensive database that lists citations for every shark species and includes species profiles for many sharks and rays. Instead of duplicating efforts by building a separate database, ASIS will use the existing international resources of Shark References whereby ASIS records for each species will include a link to Shark References that brings up the list of references for that species.

 

ASIS strongly encourages Australian researchers to ensure that their literature is included in the Shark References database (note that you can also search Shark References for citations by author). Visit Shark References at https://shark-references.com/.


 

 

New images at shark-references:


Many thanks to the following persons for the permission to use their images:
 
  • Javier Guallart, L'Elasmogrup, University of Valencia for images of Centrophorus granulosus (C. uyato, in preperation): 

     
  • William T. White and Peter Last, CSIRO Marine & Atmospheric Research, Wealth from Oceans Flagship, Hobart, Tasmania, Australia for permission to use the images of the CSIRO Marine and Atmospheric Research Papers at shark-references.com,


    Okamejei boesemani (ISHIHARA, 1987)
    Okamejei hollandi (JORDAN & RICHARDSON, 1909)
    Okamejei jensenae LAST & LIM, 2010
    Dipturus kwangtungensis (CHU, 1960)
    Pastinachus gracilicaudus LAST & MANJAJI-MATSUMOTO, 2010
    Pastinachus atrus (MACLEAY, 1883)
    Pastinachus stellurostris LAST, FAHMI & NAYLOR, 2010
    Aetobatus ocellatus (KUHL, 1823)
    Aetobatus narinari (EUPHRASEN, 1790)
     
  • Toño Maño, Tiburones en Galicia, Spain for images of Alopias vulpinus (BONNATERRE, 1788): 

  • Lawrence R. Frank and Rachel Berquist, Radiology - Center for Scientific Computation in Imaging, University of California San Diego for the image of e.g. Proscyllium habereri HILGENDORF, 1904:


    For more images see:
    Triakis semifasciata GIRARD, 1855
    Galeocerdo cuvier (PÉRON & LESUEUR, 1822)

    Please visit the website of the Digital Fish Library (DFL)
    Mission: Funded by the National Science Foundation's (NSF) Biological Infrastructure program (Grant DBI-0446389), the Digital Fish Library (DFL) project explores the morphological diversity of fishes using magnetic resonance imaging (MRI). Our mission is to catalog 3D MRI images of fish in an online archive that is accessible to scientists, educators and the general public via the web.


Please support shark-references and send your images to: info@shark-references.com
 

Missing papers:

Many thanks to all friends of shark-references, who send me some missing papers last month!

Shark-References would kindly like to ask you for your contribution to this project.

At the moment I search e.g. the following papers:

Canadian Journal of Zoology

LAIRD, M. 1959 Caliperia brevipes n. sp. (Ciliata: Peritricha), epizoic on Raja erinacea Mitchill at Saint Andrews, New Brunswick. Canadian Journal of Zoology, 37 (3): 283-288

KHAN, R.A. 1972 Developmental stages of Haemogregarina delagei Laveran and Mesnil in an elasmobranch, Raja radiata Donovan. Canadian Journal of Zoology, 50 (6): 906-907

GROVER, C.A. 1974 Juvenile denticles of the swell shark Cephaloscyllium ventriosum: function in hatching. Canadian Journal of Zoology, 52 (2): 359-363

EVANS, R.E. & FORD, P. 1976 Alkaline phosphatase isozyme patterns and histochemistry in adult and differentiating skate spiral valve. Canadian Journal of Zoology, 54 (9): 1459-1465

MOSER, M. & ANDERSON, S. 1977 An intrauterine leech infection: Branchellion lobata Moore, 1952 (Piscicolidae) in the Pacific angel shark (Squatina californica) from California. Canadian Journal of Zoology, 55 (4): 759-760

JONES, B.C. & GEEN, G.H. 1977 Morphometric changes in an elasmobranch (Squalus acanthias) after preservation. Canadian Journal of Zoology, 55 (6): 1060-1062

GILBERT, P.W. & SIVAK, J.G. & PELHAM, R.E. 1981 Rapid pupil change in selachians. Canadian Journal of Zoology, 59 (3): 560-564

HOGANS, W.E. & DADSWELL, M.J. 1985 Parasitic copepods of the white shark (Carcharodon carcharias L.) from the Bay of Fundy. Canadian Journal of Zoology, 63 (3): 740-741

BENZ, G.W. & DEETS, G.B. 1986 Kroyeria caseyi sp.nov. (Kroyeriidae: Siphonostomatoida), a parasitic copepod infesting gills of night sharks (Carcharhinus signatus (Poey, 1868)) in the western North Atlantic. Canadian Journal of Zoology, 64 (11): 2492-2498

DEETS, G.B. & BENZ, G.W. 1986 Eudactylinodes keratophagus sp. nov., the first record of Eudactylinidae Kabata, 1979 (Copepoda: Siphonostomatoida) from horn sharks (Heterodontus francisci (Girard, 1854), and H. mexicanus Taylor and Castro-Aguirre, 1972). Canadian Journal of Zoology, 64 (11): 2499-2502

HOGANS, W.E. & BRATTEY, J. 1986 Ommatokoita sp. (Copepoda: Lernaeopodidae) parasitic on a demersal shark, Etmopterus princeps, from the northwest Atlantic Ocean. Canadian Journal of Zoology, 64 (4): 833-835

ZEISKE, E. & THEISEN, B. & GRUBER, S.H. 1987 Functional morphology of the olfactory organ of two carcharhinid shark species. Canadian Journal of Zoology, 65 (10): 2406-2412

BENZ, G.W. & DEETS, G.B. 1987 Echthrogaleus disciarai sp.nov. (Siphonostomatoida: Pandaridae), a parasitic copepod of the devil ray Mobula lucasana Beebe and Tee Van, 1938 from the Sea of Cortez.  Canadian Journal of Zoology, 65 (3): 685-690

BENZ, G.W. & DUPRE, K.S. 1987 Spatial distribution of the parasite Kroyeria carchariaeglauci Hesse, 1879 (Copepoda: Siphonostomatoida: Kroyeriidae) on gills of the blue shark (Prionace glauca (L., 1758)). Canadian Journal of Zoology, 65 (5): 1275-1281

DEETS, G.B. 1987 Phylogenetic analysis and revision of Kroeyerina Wilson, 1932 (Siphonostomatoida: Kroyeriidae), copepods parasitic on chondrichthyans, with descriptions of four new species and the erection of a new genus, Prokroyeria. Canadian Journal of Zoology, 65 (9): 2121-2148

ADAMSON, M.L. & DEETS, G.B. & BENZ, G.W. 1987 Description of male and redescription of female Phlyctainophora squali Mudry and Dailey, 1969 (Nematoda; Dracunculoidea) from elasmobranchs.  Canadian Journal of Zoology, 65: 3006-3010

BENZ, G.W. & DEETS, G.B. 1988 Fify-one years later: an update on Entepherus, with a phylogenetic analysis of Cecropidae Dana, 1849 (Copepoda: Siphonstomatoida).  Canadian Journal of Zoology, 66 (4): 856-865

UPTON, S.J. & GARDNER, S.L. & DUSZYNSKI, D.W. 1988 The round stingray, Urolophus halleri (Rajiformes: Dasyatidae), as a host for Eimeria chollaensis sp.nov. (Apicomplexa: Eimeriidae). Canadian Journal of Zoology, 66 (9): 2049-2052

HOGANS, W.E. & TRUDEAU, D.J. 1989 Alebion crassus Wilson, 1932 (Copepoda: Caligoida) from the sand tiger shark, Eugomphodus taurus (Rafinesque), in the upper Bay of Fundy. Canadian Journal of Zoology, 67 (3): 774-775

BENZ, G.W. 1989 Developmental stages of Alebion lobatus Cressey, 1970 (Copepoda: Euryphoridae) found parasitic on the sandbar shark (Carcharhinus plumbeus (Nardo, 1827)) in the western North Atlantic, and a phylogenetic analysis of the genus Alebion Krøyer, 1863. Canadian Journal of Zoology, 67 (6): 1578-1598

BENZ, G.W. & IZAWA, K. 1990 Albionella kabatai sp.nov. (Lernaeopodidae: Siphonostomatoida), a copepod parasite of the spatulasnout cat shark (Apristurus platyrhynchus (Tanaka, 1909) from the Sea of Kumano. Canadian Journal of Zoology, 68 (12): 2645-2648

BENZ, G.W. & ADAMSON, S.A.M. 1990 Disease caused by Nemesis robusta (van Beneden, 1851) (Eudactylinidae: Siphonostomatoida: Copepoda) infections on gill filaments of thresher sharks (Alopias vulpinus (Bonnaterre, 1758)), with notes on parasite ecology and life history. Canadian Journal of Zoology, 68 (6): 1180-1186

FARRELL, A.P. & DAVIE, P.S. 1991 Coronary artery reactivity in the mako shark, Isurus oxyrinchus. Canadian Journal of Zoology, 69 (2): 375-379

BENZ, G.W. 1991 Redescription of Lernaeopoda oviformis Shiino, 1956 (Copepoda: Lernaeopodidae), a parasite of the shortspine spurdog (Squalus mitsukurii Jordan and Snyder, 1903), and hitherto covert member of Albionella Kabata, 1979. Canadian Journal of Zoology, 69 (3): 567-570

DAVIE, P.S. & FARRELL, A.P. 1991 Cardiac performance of an isolated heart preparation from the dogfish (Squalus acanthias): the effects of hypoxia and coronary artery perfusion. Canadian Journal of Zoology, 69 (7): 1822-1828

KEELING, C.P. & BURT, M.D.B. 1996 Echeneibothrium canadensis n.sp. (Tetraphyllidea: Phyllobothriidae) in the spiral intestine of the thorny skate (Raja radiata) from the Canadian Atlantic Ocean. Canadian Journal of Zoology, 74 (8): 1590-1593

MORGAN, J.D. & IWAMA, G.K. & WILSON, J.M. 1997 Oxygen consumption and Na+,K+-ATPase activity of rectal gland and gill tissue in the spiny dogfish, Squalus acanthias. Canadian Journal of Zoology, 75 (5): 820-825


 

 

Please support www.shark-references.com and send missing papers (not listed papers or papers without the infosymbol) to juergen.pollerspoeck@shark-references.com.
 

 

 

Meetings:

IV Encuentro Colombiano sobre Condrictios:

place: Universidad EAFIT de Medellín, Colombia

date: 20. - 24. October 2014

more information



New information about the colombian meeting on Chondricthyes is avaiable! Use the following downloadlink (in spain).

https://shark-references.com/images/meine_bilder/downloads/II_Circular_IV_ECC_espanol.pdf

 


FIRST ANNOUNCEMENT

EEA 2014 European Elasmobranch Association – Annual Scientific Conference 18 years on – Prepared for the Future


The Dutch Elasmobranch Society is proud to host the 18th Annual Scientific Conference of the European Elasmobranch Association from 7th to 9th November 2014 at the Van Hall Larenstein University of Applied Sciences in Leeuwarden, The Netherlands.

Elasmobranchs are increasingly included in high level policy agreements. The conference will provide a platform for those involved in international science and policy and aims to help coordinate the information necessary for the development and implementation of management measures for rays and sharks in European waters. EEA 2014 will be of interest to all those who are involved in the study, management and conservation of chondrichthyans (sharks, skates, rays and chimaeras).

The three-day conference will include theme sessions on policy making, restoration measures, integrated management, husbandry and captive management, tagging and other subjects. The collection, availability and sharing of data will be an underlying theme. There will be plenary talks, a poster session and opportunities for networking and socialising. In addition an excursion will be offered on the last day.

Leeuwarden is a vibrant town with a charming centre and a wide selection of hotels and restaurants. It is the capital city of the northern Province of Fryslân and will be the Cultural Capital of Europe in 2018. There is a twice hourly train service from Schiphol (one direct, one with one connection) and it is easy to reach by road.

See www.elasmobranch.nl/EEA2014 for preliminary details on the conference.

Contact: eea2014@elasmobranch.nl
 
 
 

New described species/Taxonomic News:


Parasitology:


MOGHADAM, M. & MERAJI MASOULEH HASELI, M. (2014): Halysioncum kishiense sp n. and Echinobothrium parsadrayaiense sp n. (Cestoda: Diphyllidea) from the banded eagle ray, Aetomylaeus cf. nichofii off the Iranian coast of the Persian Gulf.Folia Parasitologica, 61 (2): 133-140  http://dx.doi.org/10.14411/fp.2014.019

New species: Halysioncum kishiense, Echinobothrium parsadrayaiense

Abstract: Two new species of two genera of the order Diphyllidea van Beneden in Cams, 1863, Halysioncum Caira, Marques, Jensen, Kuchta et Ivanov, 2013 and Echinobothrium van Beneden, 1849 sensu stricto are described from Aetomylaeus cf. nichofii (Bloch et Schneider) off the Iranian coast of the Persian Gulf. Halysioncum kishiense sp. n. differs from all other congeners in the number of apical hooks with the exception of H. hoffmanorum (Tyler, 2001) and H. pigmentatum (Ostrowski de Niifiez, 1971). Halysioncum kishiense sp. n. can be easily differentiated from H. hoffmanorum and H. pigmentatum by the number of hooklets and testis numbers. Echinobothrium parsadrayaiense sp. n. is differentiated from all its congeners except for E. acanthinophyllum Rees, 1961 by its hook formula. The number of spines per column on the cephalic peduncle, the number of testes and possession of a thickwalled rather than thin-walled vagina distinguish E. parsadrayaiense sp. n. from E. acanthinophyllum. To date, with these two new species, five species of Diphyllidea have been reported from the Persian Gulf.

KURASHIMA, A. & SHIMIZU, T. & MANO, N. & OGAWA, K. & FUJITA, T. (2014): A new combination and a new species of onchobothriid tapeworm (Cestoda: Tetraphyllidea: Onchobothriidae) from triakid sharks. Systematic Parasitology, 88 (1): 75-83  http://dx.doi.org/10.1007/s11230-014-9486-3

New species: Calliobothrium shirozame


Abstract: A new combination and a new species of onchobothriid tapeworm are described from triakid sharks. We found Platybothrium xiamenensis Wang & Yang, 2001 and Erudituncus musteli (Yamaguti, 1952) from Hemitriakis japanica (Muller & Henle). Based on the morphology of the hooks P. xiamenensis is transferred to the genus Erudituncus Healy, Scholz & Caira, 2001. The specimens studied by us differ from the original description in the number of proglottids and testes and in the size of the cirrus-sac. However, we consider them conspecific with E. xiamenensis due to the consistent hook morphology and laciniations in both descriptions and believe the differences reflect intraspecific variation. The type-host of E. xiamenensis was reported as Mustelus griseus Pietschmann. However, in the present study, this parasite was found only in H. japanica and never in M. griseus although many specimens of the latter host were examined. This suggests that the type-host in the original description has probably been misidentified. We found another undescribed species in M. griseus, Calliobothrium shirozame n. sp., which is distinguished from the congeners by having a unique combination of the number of laciniations: four in the cephalic peduncle, six in the immature proglottids and four in the mature proglottids.

 

 

Fossil:



REINECKE, T. (2014): Two new scyliorhinid shark species (Elasmobranchii, Carcharhiniformes, Scyliorhinidae), from the Sülstorf Beds (Chattian, Late Oligocene) of the southeastern North Sea Basin, northern Germany. Palaeovertebrata, in press 

New species: Scyliorhinus biformis, Scyliorhinus suelstorfensis

Abstract: Based on isolated teeth two new scyliorhinid shark species, Scyliorhinus biformis nov. sp. and Scyliorhinus suelstorfensis nov. sp., are described from the Sülstorf Beds, early-middle Chattian, of Mecklenburg, northeastern Germany. They form part of a speciose assemblage of necto-benthic sharks and batoids which populated the warm-temperate to subtropical upper shelf sea of the south-eastern North Sea Basin.


VULLO, R. & COURVILLE, P. (2014): Fish remains (Elasmobranchii, Actinopterygii) from the Late Cretaceous of the Benue Trough, Nigeria. Journal of African Earth Sciences, 97: 194–206  http://dx.doi.org/10.1016/j.jafrearsci.2014.04.016

New species: Rhombopterygia zaborskii 

Abstract: Selachian and ray-finned fish remains from various Late Cretaceous localities of Nigeria are described. Each locality has yielded only a very few specimens and the diversity is therefore very low. However, some taxa are recorded for the first time in Africa. The Ashaka locality in the Upper Benue Trough (northeastern Nigeria) has yielded a small but interesting late Cenomanian assemblage of microremains, including teeth of “Carcharias” amonensis, Rhombopterygia zaborskii sp. nov., Hamrabatis sp., “Stephanodus” sp., and a possible ionoscopiform. A large prearticular dentition coming from the early Turonian beds of this locality is assigned to the large pycnodontiform Acrotemnus, a poorly known genus here regarded as a senior synonym of Macropycnodon. In the Lower Benue Trough (southeastern Nigeria), several localities ranging in age from the late Cenomanian to the early Maastrichtian have yielded various widespread taxa such as Ptychodus,Scapanorhynchus, Squalicorax, Vidalamiinae indet., cf. Protosphyraena, and Eodiaphyodus. The seaway that occupied the Benue Trough during transgressive episodes (late Cenomanian–early Turonian and Maastrichtian) created opportunities for the dispersal of many marine fish taxa into new areas, such as the proto-South Atlantic. 

JOHNS, M.J. & ALBANESI, G.L. & VOLDMAN, G.G. (2014): Freshwater Shark Teeth (Family Lonchidiidae) from the Middle—Upper Triassic (Ladinian—Carnian) Paramillo Formation in the Mendoza Precordillera, Argentina. Journal of Vertebrate Paleontology, 34 (3): 512-523  http://dx.doi.org/10.1080/02724634.2013.803976

New species: Lonchidion paramilloensis 

Abstract: A collection of over 550 elasmobranch teeth (Family Lonchidiidae) were obtained from fresh water fluvial deposits of the Middle—Upper Triassic (Ladinian—Carnian) Paramillo Formation, in northwestern Mendoza Province, Argentina. The new hybodontid species, Lonchidion paramilloensis, sp. nov., solely based on teeth, is within a 20-m-thick interval containing black shale interbedded with andesitic sills and intercalated with lensoidal calcarenites. The teeth have a characteristic labial peg with an accessory cusplet and a low gracile crown that is narrower labiolingually and more elongate laterally. The teeth are similar to some North American Late Triassic and Late Cretaceous species of the genus Lonchidion (e.g., L. humblei, L. griffisi, L. selachos), but are distinct in having a low primary cusp, up to seven pairs of lateral cusplets, a roundedtriangular-shaped labial peg with one accessory cusplet, and an absence of other crown ornaments. Color analyses of upper tooth crowns indicate an ichthyolith alteration index (IAI)/conodont alteration index (CAI) value of 6.0–6.5 (360–610°C). Considerable pitting and alteration of specimens indicates thermal alteration to 610° C and (or) chemical alteration.

KRIWET, J. & MEWIS, H. & HAMPE, O. (2014): A partial skeleton of a new lamniform mackerel shark from the Miocene of Europe. Acta Palaeontologica Polonica, in press  http://dx.doi.org/10.4202/app.00066.2014

New genus: Carcharomodus

Abstract: Cenozoic lamniform sharks are mostly represented by isolated teeth and vertebrae, whereas articulated skeletal remains are usually very scarce. Here, we describe a partial skeleton of an extinct lamniform shark consisting of 42 slightly disarticulated teeth, 49 vertebrae, and additional unidentifiable cranial and postcranial remains. The specimen originates from the Miocene micaclay of Groß Pampau (North Germany), which is of late Langenfeldian age (= Serravallian-Tortonian boundary; middle/late Miocene). A total of 13 measurements of each tooth, as well as morphological features, were used to reconstruct the dentition of this specimen and to provide detailed taxonomic information. Additionally, the total body size and age at death were established using methodologies based on vertebral and tooth measurements and vertebral centra growth ring counts, respectively. The specimen undoubtedly represents the most complete individual of Carcharodon (= Isurus) escheri, previously known only from a few isolated teeth. The dental pattern (e.g., marked dignathic and monognathic heterodonty patterns; only slightly labio-lingually compressed upper teeth; upper teeth slender with distally inclined or curved main cusps; massive, hook-like upper intermediate tooth; main cusps with crenulated cutting edges; lateral cusplets in teeth of all ontogenetic stages) clearly separates this shark from all hitherto known Cenozoic and recent lamnids and a new genus, Carcharomodus, consequently is introduced. Carcharomodus escheri gen. nov., comb. nov. is a characteristic element of late early Miocene to the Pliocene Western and Central European fish faunas. All previously identified Pacific occurrences represent a different taxon. We estimate that the specimen had a total body length of about 4 m and that it was older than 10 years and thus might have reached maturity before death, as indicated by all available evidence.
 
 

New Paper

 

Recent Papers:

ANDREOTTI, S. & RUTZEN, M. & WESCHE, P.L. & O'CONNELL, C.P. & MEYER, M. & OOSTHUIZEN, H. & MATTHEE, C.A. (2014): A Novel Categorization System to Organize a Large Photo Identification Database for White Sharks, Carcharodon carcharias. African Journal of Marine Science, 36 (1): 59-67 http://dx.doi.org/10.2989/1814232X.2014.892027
ASIS, A.M. & LACSAMANA, J.K. & SANTOS, M.D. (2014): Illegal trade of regulated and protected aquatic species in the Philippines detected by DNA barcoding.Mitochondrial DNA, in press  http://dx.doi.org/10.3109/19401736.2014.913138
BANGLEY, C.W. & RULIFSON, R.A. (2014): Feeding Habits, Daily Ration, and Potential Predatory Impact of Mature Female Spiny Dogfish in North Carolina Coastal Waters. North American Journal of Fisheries Management, 34 (3): 668-677 http://dx.doi.org/10.1080/02755947.2014.902410
BELLEGGIA, M. & FIGUEROA, D.E. & BREMEC, C. (2014): The dentition of the narrownose smooth-hound shark, Mustelus schmitti. Marine and Freshwater Research, in press  http://dx.doi.org/10.1071/MF13122
BORNATOWSKI, H. & BRAGA, R.R. & ABILHOA, V. & CORRÊA, M.F.M. (2014):Feeding ecology and trophic comparisons of six shark species in a coastal ecosystem off southern Brazil. Journal of Fish Biology, in press  http://dx.doi.org/10.1111/jfb.12417
BORNATOWSKI, H. & SANTOS, L. & DE CASTRO ROBERT, M. & WEISER, P.A. (2014): Occurrence of the narrowmouth catshark Schroederichthys bivius (Chondrichthyes: Scyliorhinidae) in southern Brazil. Marine Biodiversity Records, 7: e51  http://dx.doi.org/10.1017/S1755267214000542
BORNATOWSKI, H. & WOSNICK, N. & DAVID DO CARMO, W.P. & CORRÊA, M.F.M. & ABILHOA, V. (2014): Feeding comparisons of four batoids (Elasmobranchii) in coastal waters of southern Brazil. Journal of the Marine Biological Association of the United Kingdom, in press  http://dx.doi.org/10.1017/S0025315414000472
BRUNNSCHWEILER, J.M. & ABRANTES, K.G. & BARNETT, A. (2014): Long-Term Changes in Species Composition and Relative Abundances of Sharks at a Provisioning Site (vol 9, e86682, 2014) PLoS ONE, 9 (4): e94148 http://dx.doi.org/10.1371/journal.pone.0094148
BURGESS, G.H. & BRUCE, B.D. & CAILLIET, G.M. & GOLDMAN, K.J. & GRUBBS, R.D. & LOWE, C.G. & MACNEIL, M.A. & MOLLET, H.F. & WENG, K.C. & O'SULLIVAN, J.B. (2014): A Re-Evaluation of the Size of the White Shark (Carcharodon carcharias) Population off California, USA. PLoS ONE, 9 (6): e98078 http://dx.doi.org/10.1371/journal.pone.0098078
CLAESON, K.M. (2014): The impacts of comparative anatomy of electric rays (Batoidea: Torpediniformes) on their systematic hypotheses. Journal of Morphology, 275 (6): 597–612  http://dx.doi.org/10.1002/jmor.20239
CURTIS, T.H. & MCCANDLESS, C.T. & CARLSON, J.K. & SKOMAL, G.B. & KOHLER, N.E. & NATANSON, L.J. & BURGESS, G.H. & HOEY, J.J. & PRATT, H.L. (2014): Seasonal Distribution and Historic Trends in Abundance of White Sharks, Carcharodon carcharias, in the Western North Atlantic Ocean. PLoS ONE, 9 (6): e99240  http://dx.doi.org/10.1371/journal.pone.0099240
DOHERTY, P.D. & ALFARO-SHIGUETO, J. & HODGSON, D.J. & MANGEL, J.C. & WITT, M.J. & GODLEY, B.J. (2014): Big catch, little sharks: Insight into Peruvian small-scale longline fisheries. Ecology and Evolution, in press http://dx.doi.org/10.1002/ece3.1104
DRIGGERS, W.B. & FRAZIER, B.S. & ADAMS, D.H. & ULRICH, G.F. & JONES, C.M. & HOFFMAYER, E.R. & CAMPBELL, M.D. (2014): Site fidelity of migratory bonnethead sharks Sphyrna tiburo. Journal of Experimental Marine Biology and Ecology, 459: 61–69  http://dx.doi.org/10.1016/j.jembe.2014.05.006
DRYMON, J.M. & AJEMIAN, M.J. & POWERS, S.P. (2014): Distribution and Dynamic Habitat Use of Young Bull Sharks Carcharhinus leucas in a Highly Stratified Northern Gulf of Mexico Estuary.  http://dx.doi.org/10.1371/journal.pone.0097124
ECHWIKHI, K. & SAIDI, B. & BRADAI, M.N. (2014): Elasmobranchs longline fisheries in the Gulf of Gabès (southern Tunisia). Journal of the Marine Biological Association of the United Kingdom, 94 (1): 203-210  http://dx.doi.org/10.1017/S0025315413000726
EDELIST, D. (2014): New length- weight relationships and Lmax values for fishes from the Southeastern Mediterranean Sea. Journal of Applied Ichthyology, 30 (3): 521-526 http://dx.doi.org/10.1111/j.1439-0426.2012.02060.x
ESCOBAR-SÁNCHEZ, O. & MORENO-SÁNCHEZ, X.G. & AGUILAR-CRUZ, C.A. & ABITIA-CÁRDENAS, L.A. (2014): First case of synophthalmia and albinism in the Pacific angel shark Squatina californica. Journal of Fish Biology, in press http://dx.doi.org/10.1111/jfb.12412
FAHMI & DHARMADI (2014): First confirmed record of the white shark Carcharodon carcharias (Lamniformes: Lamnidae) from Indonesia. Marine Biodiversity Records, 7: e53   http://dx.doi.org/10.1017/S1755267214000414
FRISK, M.G. & JORDAAN, A. & MILLER, T.J. (2014): Moving beyond the current paradigm in marine population connectivity: are adults the missing link? Fish and Fisheries, 15 (2): 242-254  http://dx.doi.org/10.1111/faf.12014
FUSS, T. & BLECKMANN, H. & SCHLUESSEL, V. (2014): Visual discrimination abilities in the gray bamboo shark (Chiloscyllium griseum). Zoology, 117 (2): 104-111 http://dx.doi.org/10.1016/j.zool.2013.10.009
HARRISON, L.R. & DULVY, N.K. (2014): Sawfish: A Global Strategy for Conservation.IUCN Species Survival Commission’s Shark Specialist Group,Vancouver, Canada. 
HENDERSON, A.C. & REEVE, A.J. & AMBU-ALI, A. (2014): Microanatomy of the male and female reproductive tracts in the long-tailed butterfly ray Gymnura poecilura, an elasmobranch with unusual characteristics. Journal of Fish Biology, 84 (2): 297-313 http://dx.doi.org/10.1111/jfb.12282
HOEN, D.K. & KIM, S.L. & HUSSEY, N.E. & WALLSGROVE, N.J. & DRAZEN, J.C. & POPP, B.N. (2014): Amino acid N-15 trophic enrichment factors of four large carnivorous fishes Journal of Experimental Marine Biology and Ecology, 453: 76-83 http://dx.doi.org/10.1016/j.jembe.2014.01.006
HOSSAIN, M.A. & THOMPSON, B.S. & CHOWDHURY, G.W. & MOHSANIN, S. & FAHAD, Z.H. & KOLDEWEY, H.J. & ISLAM, M.A. (2014): Sawfish exploitation and status in Bangladesh. Aquatic Conservation: Marine and Freshwater Ecosystems, in press  http://dx.doi.org/10.1002/aqc.2466
HUVENEERS, C. & ROBBINS, W.D. (2014): Species at the intersection.  In: Techera EJ, Klein N (eds) Sharks: Conservation, governance and management. Routledge, Oxon. 236-250 
JAIME-RIVERA, M. & CARAVEO-PATIÑO, J. & HOYOS-PADILLA, M. & GALVAN-MAGAÑA, F. (2014): Feeding and migration habits of white shark Carcharodon carcharias (Lamniformes: Lamnidae) from Isla Guadalupe inferred by analysis of stable isotopes δ15N and δ13C. Revista de Biología Tropical, 62 (2): 637-647 
KAPIRIS, K. & APOSTOLIDIS, C. & BALDACCONI, R. & BASUSTA, N. & BILECENOGLU, M. & BITAR, G. & BOBORI, D.C. & BOYACI, Y.O. & DIMITRIADIS, C. & DJUROVIC, M. & DULCIC, J. & DURUCAN, F. & GEROVASILEIOU, V. & GOKOGLU, M. & KOUTSOUBAS, D. & LEFKADITOU, E. & LIPEJ, L. & MARKOVIC, O. & MAVRIC, B. & OZVAROL, Y. & PESIC, V. & PETRIKI, O. & SIAPATIS, A. & SINI, M. & TIBULLO, D. & TIRALONGO, F. (2014):New Mediterranean Marine biodiversity records (April, 2014). Mediterranean Marine Science, 15 (1): 198-212 
KAPLAN, K.A. & MONTERO-SERRA, I. & VACA-PITA, E.L. & SULLIVAN, P.J. & SUAREZ, E. & VINUEZA, L. (2014): Applying complementary species vulnerability assessments to improve conservation strategies in the Galapagos Marine Reserve.Biodiversity and Conservation, 23 (6): 1509-1528  http://dx.doi.org/10.1007/s10531-014-0679-5
KRÖGER, R.H.H. & GUSTAFSSON, O.S.E. & TUMINAITE, I. (2014): Suspension and optical properties of the crystalline lens in the eyes of basal vertebrates. Journal of Morphology, 275 (6): 613-622  http://dx.doi.org/10.1002/jmor.20240
LIMSUWANMANEE, J. & CHAIJAN, M. & MANURAKCHINAKORN, S. & PANPIPAT, W. & KLOMKLAO, S. & BENJAKUL, S. (2014): Antioxidant activity of Maillard reaction products derived from stingray (Himantura signifier) non-protein nitrogenous fraction and sugar model systems. LWT - Food Science and Technology, 57 (2): 718-724 
MEUNIER, F.J. & HERBIN, M. (2014): The collection of histological microscopic preparations realised by Paul Gervais (1816-1879) on fish skeleton. Cybium, 38 (1): 23-42 
MILLER, M.H. & CARLSON, J. & HOGAN, L. & KOBAYASHI, D. (2014): Status review report: great hammerhead shark (Sphyrna mokarran). Final Report to National Marine Fisheries Service, Office of Protected Resources. June 2014. 116 pp 
MOMIGLIANO, P. & ROBBINS, W.D. & GARDNER, M. & STOW, A. (2014):Characterisation of 15 novel microsatellite loci for the grey reef shark (Carcharhinus amblyrhynchos). Conservation Genetics Resources, in press http://dx.doi.org/10.1007/s12686-014-0174-z
NATANSON, L.J. & ADAMS, D.H. & WINTON, M.V. & MAURER, J.R. (2014): Age and Growth of the Bull Shark in the Western North Atlantic Ocean. Transactions of the American Fisheries Society, 143 (3): 732-743 http://dx.doi.org/10.1080/00028487.2014.892537
O'CONNELL, C.P. & ANDREOTTI, S. & RUTZEN, M. & MATTHEE, C.A. & MEYER, M. & HE, P. (2014): Effects of the Sharksafe barrier on white shark (Carcharodon carcharias) behavior and its implications for future conservation technologies. Journal of Experimental Marine Biology and Ecology, in press 
O'CONNELL, C.P. & GRUBER, S.H. & O'CONNELL, T.J. & JOHNSON, G. & GRUDECKI, K. & HE, P. (2014): The Use of Permanent Magnets to Reduce Elasmobranch Encounter with a Simulated Beach Net.  1.  The Bull Shark (Carcharhinus leucas). Ocean & Coastal Management, in press http://dx.doi.org/10.1016/j.ocecoaman.2013.12.012
O'CONNELL, C.P. & GUTTRIDGE, T.L. & GRUBER, S.H. & BROOKS, J. & FINGER, J.S. & HE, P. (2014): Behavioral modification of visually deprived lemon sharks (Negaprion brevirostris) towards magnetic fields. Journal of Experimental Marine Biology and Ecology, 453: 131-137 http://dx.doi.org/10.1016/j.jembe.2014.01.009
O'CONNELL, C.P. & HE, P. (2014): A large scale field analysis examining the effect of magnetically-treated baits and barriers on teleost and elasmobranch behavior. Ocean & Coastal Management, 96: 130-137 http://dx.doi.org/10.1016/j.ocecoaman.2014.05.011
O'CONNELL, C.P. & HE, P. & JOYCE, J. & STROUD, E.M. & RICE, P.H. (2014):Effects of the SMART Hook™ (Selective Magnetic and Repellent-Treated Hook) on Spiny Dogfish Catch in the Gulf of Maine.  Ocean & Coastal Management, in press http://dx.doi.org/10.1016/j.ocecoaman.2012.08.002
O'CONNELL, C.P. & STROUD, E.M. & HE, P. (2014): The Emerging Field of Electrosensory and Semiochemical Shark Repellents: Mechanisms of Detection, Overview of Past Studies, and Future Directions. Ocean & Coastal Management, in press  http://dx.doi.org/10.1016/j.ocecoaman.2012.11.005
PORTNOY, D.S. & HOLLENBECK, C.M. & JOHNSTON, J.S. & CASMAN, H.M. & GOLD, J.R. (2014): Parthenogenesis in a whitetip reef shark Triaenodon obesus involves a reduction in ploidy. Journal of Fish Biology, in press http://dx.doi.org/10.1111/jfb.12415
RAMOS, T.P.A. & RAMOS, R.T.C. & RAMOS, S.A.Q.A. (2014): Ichthyofauna of the Parnaíba river Basin, Northeastern Brazil. Biota Neotropica, 14 (1): 1-8 http://dx.doi.org/10.1590/S1676-06020140039
RIZZARI, J.R. & FRISCH, A.J. & CONNOLLY, S.R. (2014): How robust are estimates of coral reef shark depletion? Biological Conservation, 176: 39–47 http://dx.doi.org/10.1016/j.biocon.2014.05.003
SAEZ, S. & LAMILLA, J. & PEQUENO, G. (2014): Morphology of the mechanosensory system of the lateral line system in Zearaja chilensis (Batoidea: Rajidae). [Morfologia del sistema mecanosensorial de la linea lateral de Zearaja chilensis (Batoidea: Rajidae)]. Revista de Biologia Marina y Oceanografia, 49 (1): 55-59 
SCHLUESSEL, V. (2014): Who would have thought that ‘Jaws’ also has brains? Cognitive functions in elasmobranchs. Animal Cognition, in press http://dx.doi.org/10.1007/s10071-014-0762-z
SCHLUESSEL, V. & BEIL, O. & WEBER, T. & BLECKMANN, H. (2014): Symmetry perception in bamboo sharks (Chiloscyllium griseum) and Malawi cichlids (Pseudotropheus sp.). Animal Cognition, in press  http://dx.doi.org/10.1007/s10071-014-0751-2
SHYNI, K. & HEMA, G.S. & NINAN, G. & MATHEW, S. & JOSHY, C.G. & LAKSHMANAN, P.T. (2014): Isolation and characterization of gelatin from the skins of skipjack tuna (Katsuwonus pelamis), dog shark (Scoliodon sorrakowah), and rohu (Labeo rohita). Food Hydrocolloids, 39: 68-76 http://dx.doi.org/10.1016/j.foodhyd.2013.12.008
SORENSON, L. & SANTINI, F. & ALFARO, M.E. (2014): The effect of habitat on modern shark diversification. Journal of Evolutionary Biology, in press http://dx.doi.org/10.1111/jeb.12405
TAKAGI, W. & KAJIMURA, M. & TANAKA, H. & HASEGAWA, K. & BELL, J.D. & TOOP, T. & DONALD, J.A. & HYODO, S. (2014): Urea-based osmoregulation in the developing embryo of oviparous cartilaginous fish (Callorhinchus milii): contribution of the extraembryonic yolk sac during the early developmental period. Journal of Experimental Biology, 217 (8): 1353-1362  http://dx.doi.org/10.1242/jeb.094649
VIANA, A. & DA FONSECA VIANNA, M. (2014): The feeding habits of the eyespot skate Atlantoraja cyclophora (Elasmobranchii: Rajiformes) in southeastern Brazil.Zoologia, 31 (2): 119-125  http://dx.doi.org/10.1590/S1984-46702014000200003
WEARMOUTH, V.J. & MCHUGH, M.J. & HUMPHRIES, N.E. & NAEGELEN, A. & AHMED, M.Z. & SOUTHALL, E.J. & REYNOLDS, A.M. & SIMS, D.W. (2014): Scaling laws of ambush predator 'waiting' behaviour are tuned to a common ecology.Proceedings of the Royal Society Biological Sciences Series B, 281 (1782): 20132997 http://dx.doi.org/10.1098/rspb.2013.2997
 
 

Parasitology:

KURASHIMA, A. & SHIMIZU, T. & MANO, N. & OGAWA, K. & FUJITA, T. (2014): A new combination and a new species of onchobothriid tapeworm (Cestoda: Tetraphyllidea: Onchobothriidae) from triakid sharks. Systematic Parasitology, 88 (1): 75-83  http://dx.doi.org/10.1007/s11230-014-9486-3
REES, D.J. & NOEVER, C. & HØEG, J.T. & OMMUNDSEN, A. & GLENNER, H. (2014): On the Origin of a Novel Parasitic-Feeding Mode within Suspension-Feeding Barnacles. Current Biology, in press  http://dx.doi.org/10.1016/j.cub.2014.05.030
MOGHADAM, M. & MERAJI MASOULEH HASELI, M. (2014): Halysioncum kishiense sp n. and Echinobothrium parsadrayaiense sp n. (Cestoda: Diphyllidea) from the banded eagle ray, Aetomylaeus cf. nichofii off the Iranian coast of the Persian Gulf.Folia Parasitologica, 61 (2): 133-140  http://dx.doi.org/10.14411/fp.2014.019
COSTA, G. & CHADA, T. & MELO-MOREIRA, E. & CAVALLERO, S. & D'AMELIO, S. (2014): Endohelminth parasites of the leafscale gulper shark, Centrophorus squamosus (Bonnaterre, 1788) (Squaliformes:Centrophoridae) off Madeira Archipelago. Acta Parasitologica, 59 (2): 316-322  http://dx.doi.org/10.2478/s11686-014-0247-x

 

Fossil:

CAPPETTA, H. & BARDET, N. & PEREDA SUBERBIOLA, X. & ADNET, S. & AKKRIM, D. & AMALIK, M. & BENABDALLAH, A. (2014): Marine vertebrate faunas from the Maastrichtian phosphates of Benguérir (Ganntour Basin, Morocco): Biostratigraphy, palaeobiogeography and palaeoecology. Palaeogeography, Palaeoclimatology, Palaeoecology, 409: 217–238 http://dx.doi.org/10.1016/j.palaeo.2014.04.020
JOHNS, M.J. & ALBANESI, G.L. & VOLDMAN, G.G. (2014): Freshwater Shark Teeth (Family Lonchidiidae) from the Middle—Upper Triassic (Ladinian—Carnian) Paramillo Formation in the Mendoza Precordillera, Argentina. Journal of Vertebrate Paleontology, 34 (3): 512-523  http://dx.doi.org/10.1080/02724634.2013.803976
KIRKLAND, J.I. (2014): When sharks, rays, & sawfish ruled Utah's rivers. Survey Notes, May 2014: 6-7 
KRIWET, J. & MEWIS, H. & HAMPE, O. (2014): A partial skeleton of a new lamniform mackerel shark from the Miocene of Europe. Acta Palaeontologica Polonica, in press http://dx.doi.org/10.4202/app.00066.2014
POLLERSPOECK, J. & BEAURY, B. (2014): Eine Elasmobranchierfauna (Elasmobranchii, Neoselachii) aus der Oberen Meeresmolasse (Ottnangium, Unteres Miozän) des Heigelsberger Grabens bei Teisendorf, Oberbayern. [A Miocene elasmobranch fauna (Elasmobranchii, Neoselachii) from the Upper Marine Molasse of Upper Bavaria (Heigelsberger Ditch, Teisendorf, Bavaria)]. Zitteliana, A54: 23-37 
REINECKE, T. (2014): Two new scyliorhinid shark species (Elasmobranchii, Carcharhiniformes, Scyliorhinidae), from the Sülstorf Beds (Chattian, Late Oligocene) of the southeastern North Sea Basin, northern Germany. Palaeovertebrata, in press 
VULLO, R. & COURVILLE, P. (2014): Fish remains (Elasmobranchii, Actinopterygii) from the Late Cretaceous of the Benue Trough, Nigeria. Journal of African Earth Sciences, 97: 194–206  http://dx.doi.org/10.1016/j.jafrearsci.2014.04.016
 
 

MISCELLANEOUS:

source: http://www.smh.com.au/world/sharks-may-hold-key-to-hurricane-forecasts-20140223-hvdh9.html


Sharks may hold key to hurricane forecasts

by Ken KayeA tiger shark, one of the species that has provided ocean data for scientists.

A tiger shark, one of the species that has provided ocean data for scientists. Photo: Supplied

Fort Lauderdale, Florida: They're called ocean weathermen.

More than 750 sharks, tarpon, tuna and billfish, fitted with satellite-linked tags, are providing scientists with data on temperature and salinity at various depths in the Atlantic, Gulf of Mexico and Caribbean.

It's information they hope could someday be used to improve hurricane forecasts, since a storm's strength largely depends on how much warm water it will encounter.

"What the fish are providing is a profile of the ocean's heat structure," said Jerald Ault, a marine biology professor at the University of Miami. "You get a picture of what the upper layers of the ocean look like."

Dr Ault and other scientists at the university started tagging tarpon in 2001 and sharks - including bull sharks, hammerheads and tiger sharks - in 2010 to learn more about migration, feeding and reproduction.

About three years ago, they discovered a remarkable pattern: the fish remained in waters that were about 26 degrees Celsius, the minimum required for tropical systems to develop.

In addition, many swam into the waters around tropical systems, which churned up nutrients and made hunting for food easier.

That's when scientists realised that fish could provide accurate ocean temperatures, which could be fed into the computer models that forecasters use to develop tropical predictions.

Eventually, the scientists would like to feed the data from the fish to the US's National Hurricane Center. But to harvest enough data would require thousands of tagged fish swimming through all tropical regions, Dr Ault said.

The hurricane centre was noncommittal, saying it did not expect the fish to have "a significant influence on hurricane forecasting", according to James Franklin, the centre's top hurricane specialist.

But the Miami  scientists are convinced of the potential and plan to expand their fish tagging program.

The tag data shows many fish swam directly into the paths of storms,  said Nick Shay, a professor of meteorology and oceanography at the university.

For instance, a Blue Marlin in September 2004 swam under Hurricane Ivan in the Gulf of Mexico. A tarpon did the same thing with Hurricane Katrina the following season.

"It became really clear with the Ivan case how valuable this information could be," Dr Shay said.

Some sharks, such as nurse sharks, might provide an early warning that a strong storm is in the making, as they tend to run when a system's internal pressure is dropping.

"It's like a canary in the coal mine," said research assistant professor Neil Hammerschlag.

McClatchy News

 

News from the meeting of Shark International, Durban


A new web source: http://sharksrays.org/
NAYLOR, G.J.P. & CORRIGAN, S. & MARSHALL, L. & CRAWFORD, C. & WHITE, W.T. & LAST, P. & DAVIES, J. 2014 Putting Chondrichthyans “on the map”. Abstract. In: Programm and Abstracts of Shark International, Durban 2014: 135

http://www.sharksinternational.org/Documents/SI%202014%20Oral%20Presentations%20Program%20and%20abstracts.pdf

image: screen shot of the webpage, species: Carcharodon carcharias
Photo: News from the meeting of Shark International, Durban
A new web source: http://sharksrays.org/
NAYLOR, G.J.P. & CORRIGAN, S. & MARSHALL, L. & CRAWFORD, C. & WHITE, W.T. & LAST, P. & DAVIES, J. 2014 Putting Chondrichthyans “on the map”. Abstract. In: Programm and Abstracts of Shark International, Durban 2014: 135

http://www.sharksinternational.org/Documents/SI%202014%20Oral%20Presentations%20Program%20and%20abstracts.pdf

image: screen shot of the webpage, species: Carcharodon carcharias

 

 
 

source: http://www.iol.co.za/scitech/science/environment/shark-meat-worse-than-its-bite-1.1698302#.U6B-gfl_u3i

 

Shark meat worse than its bite

June 4 2014 at 09:13am 
By Tony Carnie

Comment on this story


Copy of ca accoustic tag shark done

SUPPLIED

Gilberts study was based on toxic metals in dusky, sandbar and great white sharks in south-eastern Australia. Picture: Randy Wilder

 

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Durban - Never mind their fearsome jaws. People are now more likely to be killed by eating shark meat rather than the other way round.

This was the warning from researchers at the Sharks International Conference in Durban, where several new studies showed increasing levels of chemical poison and toxic metals in shark meat when a growing number of the animals are targeted for human consumption.

In her presentation “Sharks may kill you… if you eat them”, Jann Gilbert of Southern Cross University in Australia said recent meat samples from at least three species of shark had levels of arsenic, mercury and other toxic compounds way above the recommended food safety levels.

Gilbert said up to 273 million sharks were killed every year around the world. While a large percentage were destined for the shark fin soup market, shark meat was also used widely for direct human consumption or indirectly in fish meal or fertiliser.

Gilbert’s study was based on toxic metals in dusky, sandbar and great white sharks in south-eastern Australia.

For instance, mercury levels in two of these predator species were 10 times higher than safety levels recommended by the Foods Standards Authority of Australia and New Zealand.

Arsenic pollution was also high, with some sharks containing arsenic concentrations significantly higher than safety recommendations.

Very high levels of arsenic had also been found in hammerhead sharks in the Mediterranean sea in a separate study.

Gilbert said her results were comparable to many other studies from around the world, which indicated that shark meat was becoming increasingly toxic and unsafe for human consumption.

While it was difficult to provide an exact guideline on safe levels for those who consumed the meat regularly, she suggested that most sharks more than 150cm long were “not likely” to be safe for consumption.

Because high mercury levels could damage the brains of developing human babies in the womb, Gilbert would not advise pregnant women to eat shark meat more than once a fortnight.

Kady Lyons, of the University of Calgary, said that apex predators such as sharks were prone to bio-accumulating and bio-magnifying man-made chemical poisons because they were at the top of the food chain, especially if they fed along the coast next to large cities and farming areas.

Some of these toxic chemicals, including DDT and polychlorinated biphenyls (PCBs), were also being passed on to young sharks from the fatty tissues of their mothers.

Mercury threat

Daniel Fernando, a marine biologist from Linnaeus University in Sweden, told the Durban conference that a study of manta rays and other shark-like species in Sri Lanka and China showed high concentrations of mercury and other toxic substances were above international recommendations for human consumption.

The chemicals they found came from a wide variety of human sources, such as wood preservatives, marine anti-fouling agents or insecticides.

 

In his keynote speech, Dr David Ebert of the Pacific Shark Research Centre in California, said sharks continued to conjure up images of large and fearsome predators with a large dorsal fin cutting through the surface of the sea.

“However, the reality is that sharks come in a variety of sizes and shapes – from the giant whale shark (the world’s largest fish) to the dwarf pygmy sharks.” - The Mercury

 
 
 
 
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Catalog of Fishes

 

 

 
 The elasmobranch fauna of the Thalberg Beds, early Egerian (Chattian, Oligocene), in the Subalpine Molasse Basin near Siegsdorf, Bavaria, Germany by Thomas Reinecke, Markus Balsberger, Bernhard Beaury & Jürgen Pollerspöck
 

Papers of the Year 2019

 Papers of the year 2019

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Host-Parasite List/Parasite-Host List
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