文章基本信息

标题：New eastern Pacific Ocean record of the rare deep-water fish, Psychrolutes phrictus (Scorpaeniformes: Psychrolutidae)
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作者：Hugo Aguirre-Villaseñor ; Edgar Cruz-Acevedo ; Carolina Salas-Singh 等
期刊名称：Revista Mexicana de Biodiversidad
印刷版ISSN：1870-3453
出版年度：2016
卷号：87
期号：3
语种：English
出版社：Instituto de Biología
摘要：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 (297 mm 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 1,100 m within a temperature range of 3.88–4.25 °C, where hypoxic (0.57–0.39 mg/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 southern most range by 1,733 km, 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 .
关键词：Blob sculpin;Benthic;Mexican Pacific coast;Hypoxic conditions;Morphometrics;Meristics