Early life history of the Argentine sandperch Pseudopercis semifasciata (Pinguipedidae) off northern Patagonia

Venerus, Leonardo A. and Machinandiarena, Laura and Ehrlich, Martín D. and Parma, Ana M. (2005) Early life history of the Argentine sandperch Pseudopercis semifasciata (Pinguipedidae) off northern Patagonia. Fishery Bulletin, 103(1), pp. 195-206.

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Abstract

The Argentine sandperch Pseudopercis semifasciata (Pinguipedidae) sustains an important commercial and recreational fishery in the northern Patagonian gulfs of Argentina. We describe the morphological features of larvae and posttransition juveniles of P. semifasciata and analyze the abundance and distribution of early life-history stages obtained from 19 research cruises conducted on the Argentine shelf between 1978 and 2001. Pseudopercis semifasciata larvae were distinguished from other larvae by the modal number of myomeres (between 36 and 38), their elongated body, the size of their gut, and by osteological features of the neuro- and branchiocranium. Pseudopercis semifasciata and Pinguipes brasilianus (the other sympatric species of pinguipedid fishes) posttransition juveniles were distinguished by their head shape, pigmentation pattern, and by the number of spines of the dorsal fin (five in P. semifasciata and seven in P. brasilianus). The abundance and distribution of P. semifasciata at early stages indicate the existence of at least three offshore reproductive grounds between 42−43°S, 43−44°S, and 44−45°S, and a delayed spawning pulse in the southern stocks.

Item Type: Article
Title: Early life history of the Argentine sandperch Pseudopercis semifasciata (Pinguipedidae) off northern Patagonia
Personal Creator/Author:
CreatorsEmail
Venerus, Leonardo A.
Machinandiarena, Laura
Ehrlich, Martín D.
Parma, Ana M.
Refereed: Yes
Journal or Publication Title: Fishery Bulletin
Volume: 103
Number: 1
Page Range: pp. 195-206
Date: 2005
ISSN: 0090-0656
Issuing Agency: United States National Marine Fisheries Service
Subjects: Biology
Ecology
Fisheries
Item ID: 9652
Depositing User: Patti M. Marraro
Date Deposited: 14 Aug 2012 12:21
Last Modified: 14 Aug 2012 12:21
URI: http://aquaticcommons.org/id/eprint/9652

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