Rhizoprionodon longurio

(JORDAN & GILBERT, 1882)


Pacific sharpnose shark
Classification: Elasmobranchii Carcharhiniformes Carcharhinidae

Reference of the original description
JORDAN, D.S. & GILBERT, C.H. (1882)
Description of four new species of sharks, from Mazatlan, Mexico. Proceedings of the United States National Museum, 5: 102–110

Image of the original description
No image in first description.

Synonyms / new combinations and misspellings
Carcharhinus longurio, Carcharias longurio, Rhizoprionodon (Rhizoprionodon) longurio, Scoliodon longurio

Types
Rhizoprionodon longurio
Lectotype: USNM: 28330; Paralectotype: USNM: 29551; USNM: 29541; USNM: 28331; USNM: 28306;


Description :


Citation: Rhizoprionodon longurio (JORDAN & GILBERT, 1882): In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 12/2018

Please send your images of "Rhizoprionodon longurio" to info@shark-references.com

Rhizoprionodon longurio (JORDAN & GILBERT, 1882), © Centro Interdisciplinario de Ciencias Marinas (CICIMAR-IPN) http://coleccion.cicimar.ipn.mx
Common names
spa Cazon picudo, spa Cazón, spa Cazón bironche, spa Cazón picudo del Pacífico, spa Tiburón hocicón, spa Tiburón hocicón del Pacífico, spa Tiburón tollo, spa Tollito, spa Tollo, fra \(T\) Requin bironche, eng Pacific sharp-nosed shark, eng Pacific sharpnose shark, ita Squalo di Terranuova, por Tubarao-terranova, por Tubarão-bicudo-do-Pacífico#

Short Description
Field Marks : The only requiem shark in the eastern Pacific with long labial furrows and a second dorsal origin well behind the anal origin. See key to species and diagnostic features for characters separating it from other members of its genus.
Diagnostic Features : Prenarial snout 4.5 to 6% of total length; upper labial furrows long, 2.1 to 2.6% of total length; total count of enlarged hyomandibular pores on both sides of head just behind mouth angle usually over 16 (8 to 15 on each side); teeth with serrated edges in adults; teeth not differentiated between sexes; total tooth rows usually 27 to 29/26 to 28. First dorsal origin usually over or slightly in front of pectoral free rear tips; second dorsal origin above last third of anal base in front of its insertion; pectoral anterior margin usually equal to or shorter than first dorsal length from origin to free rear tip; adpressed apex of pectoral reaches anterior third or two-thirds of first dorsal base. Posterior monospondylous precaudal centra greatly enlarged; precaudal centra variably 12 less to 8 more than caudals, precaudals 68 to 86, total counts 146 to 167. Size moderate, males maturing over 60 cm total length. Colour grey or grey-brown above, white below, pectoral fins with light edges, dorsals with dusky tips. [517]

Distribution
Eastern Pacific: southern California, USA to Peru. Source: www.gbif.org

Human uses
fisheries: commercial

Biology
Distinct pairing with embrace [17086]. Viviparous, placental [733].

Size / Weight / Age
110 cm TL (male/unsexed; [517]); 154 cm TL (female)

Habitat
benthopelagic; marine; depth range ? - 27 m

Remarks
shark-references Species-ID=6113;