BECAS
GÓNGORA MarÍa Eva
artículos
Título:
New records of warm-temperate water fishes in central Patagonian coastal waters (Southwestern South Atlantic Ocean)
Autor/es:
BOVCON NELSON DARIO; COCHIA PABLO DANIEL; GÓNGORA MARÍA EVA; GOSZTONYI ATILA
Revista:
JOURNAL OF APPLIED ICHTHYOLOGY-ZEITSCHRIFT FUR ANGEWANDTE ICHTHYOLOGIE
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2011 vol. 27 p. 832 - 839
ISSN:
0175-8659
Resumen:
In the Province of Chubut (43_S?47_S), from 2001 to 2005 an on-board observers program analyzed 18 903
fishing hauls captured at depths of 19?104 m. Sport fishing tournaments near
Puerto Rawson, Chubut, were also monitored from 2004 to 2006. The aim was to
document the southward expansion o five cartilaginous fish species and ten bony
fish species caught in Central Patagonian waters (Argentina): Psammobatis
extenta,
Psammobatis
bergi, Atlantoraja castelnaui, Sympterygia acuta, Torpedo puelcha, Selene setapinnis, Oncopterus darwini, Dules auriga, Mullus argentinae, Cynoscion guatucupa, Prionotus nudigula, Conger orbignyanus, Urophycis brasiliensis, Trachurus lathami, and Trichiurus lepturus. Reproductive populations of S. acuta, O. darwini and C. guatucupa were detected in the Engan? o Bay area close to Puerto Rawson (43°10?S?43°19?S).
The newly reported fishes pertain to warm temperate waters, where most of the species are native
to the Argentinean
Zoogeographic Province. One likely hypothesis explaining their occurrence in the area is
the prevalence of higher
water temperatures in recent times in the San Jorge Gulf and adjacent waters. Another likely
hypothesis is the increase in sampling and catch efforts in Patagonian coastal areas and also improved capabilities in taxonomic
recognition of the species.