Loading…

New eastern Pacific Ocean record of the rare deep-water fish, Psychrolutes phrictus (Scorpaeniformes: Psychrolutidae)

Psychrolutes phrictus is a benthic deep sea fish known from the eastern North Pacific. On 30 March 2008, a specimen of the blob sculpin P. phrictus (297mm LT) was caught off the Guerrero coast, Mexico (17°45′24″N, 101°59′04″W). The blob sculpin was taken at a depth of 1,100m within a temperature ran...

Full description

Saved in:
Bibliographic Details
Published in:Revista mexicana de biodiversidad 2016-09, Vol.87 (3), p.1141-1145
Main Authors: Aguirre-Villaseñor, Hugo, Cruz-Acevedo, Edgar, Salas-Singh, Carolina
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Psychrolutes phrictus is a benthic deep sea fish known from the eastern North Pacific. On 30 March 2008, a specimen of the blob sculpin P. phrictus (297mm LT) was caught off the Guerrero coast, Mexico (17°45′24″N, 101°59′04″W). The blob sculpin was taken at a depth of 1,100m within a temperature range of 3.88–4.25°C, where hypoxic (0.57–0.39mg/l) conditions prevailed; the specimen was captured over a muddy bottom using a benthic sledge. Representatives of this species had never been reported off the Mexican Pacific coast; our new record extends the known southernmost range by 1,733km, from 33°19′N to 17°45′N for the American coast. Although high variations in morphometric and meristic values are known for the 4 species of the genus Psychrolutes (P. paradoxus, P. phrictus, P. sigalutes, and P. sio) from the eastern Pacific Ocean, a combination of traits and species distribution allow us to identity this specimen as P. phrictus. Psychrolutes phrictus es un pez bentónico de profundidad, que se distribuye en el Pacífico Norte. El 30 de marzo de 2008 se capturó un espécimen del pez gota P. phrictus (297mm LT) frente a las costas de Guerrero (17°45’24” N, 101°59’04” W), a una profundidad de 1,100 m, temperatura de 3.88 a 4.25°C, donde las condiciones de hipoxia prevalecen (0.57-0.39mg/l); el arrastre se realizó con un patín béntico sobre un fondo fangoso. A la fecha no se había documentado ningún ejemplar de esta especie en las costas de México, por lo que este nuevo registro extiende el intervalo más sureño de distribución 1,733km de 33°19’ N a 17°45’ N para la costa americana. Aun cuando las variaciones merísticas y morfológicas son grandes en las 4 especies del género Psychrolutes (P. paradoxus, P. phrictus, P. sigalutes y P. sio) en el océano Pacífico oriental, una combinación de caracteres y de su distribución permiten determinar el espécimen en cuestión como P. phrictus.
ISSN:1870-3453
2007-8706
2007-8706
DOI:10.1016/j.rmb.2016.06.013