Scientia Marina, Vol 67, No 1 (2003)

Fish larvae from the Gulf of California


https://doi.org/10.3989/scimar.2003.67n11

Gerardo Aceves-Medina
INP-Centro Interdisciplinario de Ciencias Marinas, Depto. de Plancton y Ecología Marina, Mexico

S. Patricia A. Jiménez-Rosenberg
INP-Centro Interdisciplinario de Ciencias Marinas, Depto. de Plancton y Ecología Marina, Mexico

Alejandro Hinojosa-Medina
INP-Centro Interdisciplinario de Ciencias Marinas, Depto. de Plancton y Ecología Marina, Mexico

René Funes-Rodríguez
INP-Centro Interdisciplinario de Ciencias Marinas, Depto. de Plancton y Ecología Marina, Mexico

Ricardo J. Saldierna
INP-Centro Interdisciplinario de Ciencias Marinas, Depto. de Plancton y Ecología Marina, Mexico

Daniel Lluch-Belda
INP-Centro Interdisciplinario de Ciencias Marinas, Depto. de Plancton y Ecología Marina, Mexico

Paul E. Smith
NOAA/NMFS, Southwest Fisheries Science Center, California, United States

William Watson
NOAA/NMFS, Southwest Fisheries Science Center, California, United States

Abstract


Taxonomic composition of fish larvae was analysed from 464 plankton samples obtained during 10 oceanographic surveys in the Gulf of California between 1984 and 1988. We identified 283 taxa: 173 species, 57 genera, and 53 families. Tropical and subtropical species predominated except during the winter, when temperate-subarctic species were dominant. The most abundant species were the mesopelagic Benthosema panamense, Triphoturus mexicanus and Vinciguerria lucetia, but the coastal pelagic species Engraulis mordax, Opisthonema spp., Sardinops caeruleus and Scomber japonicus were also prominent. The taxonomic composition of the ichthyoplankton shows the seasonality of the Gulf as well as environmental changes that occurred between the 1984-1987 warm period and the 1956-1957 cool period previously reported. The presence of E. mordax larvae as one of the most abundant species in the Gulf provides evidence of the reproduction of this species two years before the development of the northern anchovy fishery and the decline of the sardine fishery in the Gulf of California.

Keywords


fish larvae; ichthyoplankton; Gulf of California

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