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      Ictiofauna de la pesquería ribereña en Bahía de Navidad, Jalisco, México, asociada al evento El Niño 1997-1998

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          Abstract

          Se cuantificó la ictiofauna obtenida por la pesquería ribereña de Bahía de Navidad, Jalisco, México durante 1998. Se capturaron 6 944 ejemplares distribuidos en 130 especies (3 231 kg). Las familias con mayor número de especies fueron Carangidae, Haemulidae y Sciaenidae. Las especies más importantes en número y biomasa fueron Microlepidotus brevipinnins, Caranx caninus, C. caballus. El máximo número de especies se registró en junio (61), mínimo en marzo (33). En enero se capturó la mayor abundancia (1397 organismos), la menor durante agosto (25\). La mayor biomasa fue en enero (556.5 kg), y la menor en agosto (114.7 kg). Dieciocho especies acumularon el 86.7 % de la abundancia total, mientras que 20 especies reúnen el 86.3 % de la biomasa. De igual forma, se encontraron grandes diferencias entre el número de especies, la abundancia y la biomasa capturados en los diferentes tipos de redes

          Translated abstract

          The ichthyofauna fished in Bahía de Navidad. Jalisco, Mexico in the Central Pacific was surveyed during 1998. Six thousand nine hundred and fourty-four organisms of 130 species were caught which weighted P. 231 kg. Nearly 30 % of the species belonged to Carangidae, Haemulidae and Sciaenidae. The most important species in number and biomass were Microlepidotus brevipinnins, Caranx caninus and C. caballuso Species number, abundance and biomass fluctuated during the year. The largest number of species was caught in June (61), the minimum in March (33). January had the maximum abundance (1 397 organisms), while the minimum was obtained during August (251). The maximum biomass values were from January (556.5 kg), and the lowest from August (114.7 kg). Eighteen species accumulated 87 % of the total abundance. while 20 species represented 186.3 % of the biomass. There were large in differences species number, abundance and biomass nets of differ lent mesh size

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            Biological and chemical response of the equatorial pacific ocean to the 1997-98 El Nino

            During the 1997-98 El Nino, the equatorial Pacific Ocean retained 0. 7 x 10(15) grams of carbon that normally would have been lost to the atmosphere as carbon dioxide. The surface ocean became impoverished in plant nutrients, and chlorophyll concentrations were the lowest on record. A dramatic recovery occurred in mid-1998, the system became highly productive, analogous to coastal environments, and carbon dioxide flux out of the ocean was again high. The spatial extent of the phytoplankton bloom that followed recovery from El Nino was the largest ever observed for the equatorial Pacific. These chemical and ecological perturbations were linked to changes in the upwelling of nutrient-enriched waters. The description and explanation of these dynamic changes would not have been possible without an observing system that combines biological, chemical, and physical sensors on moorings with remote sensing of chlorophyll.
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              Ictiofauna de la Bahía de Navidad, Jalisco, México

              Se presenta el elenco sistemático y la abundancia relativa de las especies ícticas de la Bahía de Navidad, Jalisco, México, área del Pacífico Oriental Tropical con gran diversidad íctica, poco conocida hasta ahora. El trabajo incluye 245 especies, 163 géneros y 72 familias, recolectadas durante el ciclo anual 1994-1995, las cuales se encuentran depositadas en la Colección biológica del Centro de Ecología Costera de la Universidad de Guadalajara. Las familias con mayor número de especies fueron Carangidae (20), Haemulidae (20), Serranidae (17), Sciaenidae (13) y Lutjanidae (8) 20 especies representaron el 85 % y 80 % de abundancia relativa y biomasa respectivamente, Microlepidotus brevipinnis, Caranx caninus, Caranx caballus, Kiphosus analogus y Caranx sexfasciatus fueron las especies mas representativas. La mayoría de las especies recolectadas (158 especies), 65% del total, tienen afinidad a la Provincia Panámica y una menor proporción con afinidades al Océano Pacífico Oriental 47 (19%), Circuntropicales 17 (7%), de la Provincia Mexicana 13 (5%), Indopacífico 8 (3%), y endémicas del Golfo de California 1 (0.4%). El alto porcentaje de especies de peces de Bahía de Navidad también presentes en el sur del Golfo de California, indica una fuerte afinidad entre ambas, lo cual sugiere una mayor extensión del límite sureño del Golfo de California hasta la zona de Bahía de Navidad, Jalisco.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbt
                Revista de Biología Tropical
                Rev. biol. trop
                Universidad de Costa Rica (San José )
                0034-7744
                December 2001
                : 49
                : 3-4
                : 915-929
                Affiliations
                [1 ] CICESE Mexico
                [2 ] Universidad de Guadalajara Mexico
                [3 ] Sistema Nacional de Investigadores SNI
                Article
                S0034-77442001000300011
                310ae74e-3c7c-431e-9d1a-fb573a687dff

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Costa Rica

                Self URI (journal page): http://www.scielo.sa.cr/scielo.php?script=sci_serial&pid=0034-7744&lng=en
                Categories
                Biodiversity Conservation
                Biology

                General life sciences,Animal science & Zoology
                Diversity,El Niño event,ichthyofauna,Jalisco,Mexico
                General life sciences, Animal science & Zoology
                Diversity, El Niño event, ichthyofauna, Jalisco, Mexico

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