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Search Results: 1 - 10 of 714683 matches for " M. Tapia-García "
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Composición y distribución de la ictiofauna en la Laguna del Mar Muerto, Pacifico mexicano
M. Tapia-García,C. Suárez Nú?ez,G. Cerdenares,L. de Guevara
Revista de Biología Tropical , 1998,
Abstract: La Laguna del Mar Muerto, Oaxaca-Chiapas fue muestreada entre 1991 y 1993 con el objetivo de caracterizar la ictiofauna en cuanto a su composición y abundancia. Se colectaron un total de 27 971 peces que aportaron 120.9 kg. La ictiofauna de la región está caracterizada por 29 familias, 45 géneros y 66 especies. El mayor número de especies se presenta en la parte sureste de la laguna (cerca de la Boca de Tonalá), área con mayor influencia marina, abundante vegetación costera y mayor descarga fluvial. El menor número de especies se presenta en la parte más interna de la laguna, caracterizada por hipersalinidad en la época de secas y baja salinidad en la época de lluvias. Las especies que presentan amplia distribución son Diapterus peruvianus, Lile stolifera, Anchoa lucida, Anchoa mundeola, Mugil curema, Atherinella guatemalensis y Anchovia macrolepidota. Fish composition was sampled in Mar Muerto Lagoon (Mexico) between 1991 and 1993. A total of 27 971 fish with a weight of 120.9 kg were collected. The total sample consists of 29 families, 45 genera and 66 species. The highest number of species is in the area with strong marine influence (near Tonala Inlet), abundant coastal vegetation and fluvial discharge. The lowest number of species is in the inner part of the lagoon, which is hipersaline in the dry season and of low salinity in the rainy season. The species with broad distribution are Diapterus peruvianus, Lile stolifera, Anchoa lucida, Anchoa mundeola, Mugil curema, Atherinella guatemalensis and Anchovia macrolepidota.
Reproduction, distribution and abundance of Bothus constellatus (Pisces: Bothidae), in the Gulf of Tehuantepec, Mexico
Tapia-García,M.; García-Abad,M. C.; Cerdenares Ladrón de Guevara,G.;
Revista de Biología Tropical , 2000,
Abstract: a total of 3 593 individuals of bothus constellatus was captured during five oceanographic cruises carried out in the gulf of tehuantepec, mexico. its distribution, abundance, and reproduction patterns were stated by means of the analysis of the population parameters (i.e. density, biomass, weight and size average, visceral and gonadosomatic index, and maturity stages). b. constellatus is a typical demersal marine species, because it does not occur in estuaries, but occurs near to them on the continental shelf. it is distributed in the gulf of tehuantepec in depths lesser than 60 m, with high abundance around the 40 m isobath, and in front of mar muerto lagoon. during january and may the biomass and density were high. the size at first maturity of females is 101 mm total length, and maturation occurs first in zones influenced by estuarine processes. reproduction and recruitment were detected in all the collections.
Reproduction, distribution and abundance of Bothus constellatus (Pisces: Bothidae), in the Gulf of Tehuantepec, Mexico
M. Tapia-García,M. C. García-Abad,G. Cerdenares Ladrón de Guevara
Revista de Biología Tropical , 2000,
Abstract: A total of 3 593 individuals of Bothus constellatus was captured during five oceanographic cruises carried out in the Gulf of Tehuantepec, Mexico. Its distribution, abundance, and reproduction patterns were stated by means of the analysis of the population parameters (i.e. density, biomass, weight and size average, visceral and gonadosomatic index, and maturity stages). B. constellatus is a typical demersal marine species, because it does not occur in estuaries, but occurs near to them on the continental shelf. It is distributed in the Gulf of Tehuantepec in depths lesser than 60 m, with high abundance around the 40 m isobath, and in front of Mar Muerto Lagoon. During January and May the biomass and density were high. The size at first maturity of females is 101 mm total length, and maturation occurs first in zones influenced by estuarine processes. Reproduction and recruitment were detected in all the collections.
Composición y distribución de la ictiofauna en la Laguna del Mar Muerto, Pacifico mexicano
Tapia-García,M.; Suárez Nú?ez,C.; Cerdenares,G.; de Guevara,L.; Macuitl Montes,M. C.; García Abad,M. C.;
Revista de Biología Tropical , 1998,
Abstract: fish composition was sampled in mar muerto lagoon (mexico) between 1991 and 1993. a total of 27 971 fish with a weight of 120.9 kg were collected. the total sample consists of 29 families, 45 genera and 66 species. the highest number of species is in the area with strong marine influence (near tonala inlet), abundant coastal vegetation and fluvial discharge. the lowest number of species is in the inner part of the lagoon, which is hipersaline in the dry season and of low salinity in the rainy season. the species with broad distribution are diapterus peruvianus, lile stolifera, anchoa lucida, anchoa mundeola, mugil curema, atherinella guatemalensis and anchovia macrolepidota.
Environmental characterization of the continental shelf of the Gulf of Tehuantepec, Mexico
Tapia-García, M;García-Abad, M. C.;Carranza-Edwards, A;Vázquez-Gutiérrez, F;
Geofísica internacional , 2007,
Abstract: this study analyzes data and information of the physical and chemical characteristics of water, and type of sediments of the continental shelf of the gulf of tehuantepec, mexico. the changes of salinity, temperature, and dissolved oxygen fluctuate according to the wet and dry seasons (in the last one, prevails the tehuantepecanos winds). the stations samples of salinity, temperature, ph, and type of sediments were classified by cluster and factor analysis. the results suggest that the gulf of tehuantepec has two subsystems. the oaxaque?o subsystem extends south-southeast from salina cruz to the tonala inlet. this subsystem is characterized by upwelling periods, which leads to low temperatures, low dissolved oxygen and high nutrient concentration, as well as sandy sediments and insignificant river discharges when low temperature, low dissolved oxygen and high nutrient concentration are typical, and by sandy sediments and insignificant river discharges. the second, the chiapaneco subsystem, is located between the tonala inlet and the suchiate river, with strong influence of coastal lagoons and river discharges. the bottom is characterized by sandy and muddy-sand sediments. this subsystem is not affected by either tehuantepecanos winds or upwelling. both subsystems and their characteristics probably determine the patterns of distribution of the biotic resources.
Distribución, abundancia y reproducción de Opisthonema oglinum (Pisces: Clupeidae) en la plataforma continental del sur del Golfo de México
García-Abad,M. C.; Yá?ez-Arancibia,A.; Sánchez-Gil,P.; Tapia-García,M.;
Revista de Biología Tropical , 1998,
Abstract: at present the ecological understanding and evaluation of tropical demersal fish communities have their bases on studies about the biology and ecology of dominant species. the campeche sound, in the southern gulf of mexico, has more than 300 species in the demersal fish community and 30 are dominants. among these species, opisthonema oglinum is dominant by its frequency, distribution and abundance. this work determined the pattern of abundance and distribution of o. oglinum, and its reproduction, maturity and recruitment. fish were collected with a shrimp trawl net during six oceanographic cruises in the campeche sound. the cruises correspond with the three characteristic seasons in the area: rainy, "nortes", and dry season. a total of 813 individuals with sizes between 56 and 205 mm of total length were collected; they weighted 30 211.5 g. o. oglinum is a typical pelagic-neritic species, and is estuarine dependent. this species occurs in the inner shelf waters of the campeche sound, less than 36 m deep and mainly in areas influenced by coastal discharges. it also occurs in the terminos lagoon (southern campeche sound) and occasionally in the riverine systems that drain into the lagoon. the highest biomass and density are on depths lesser than 20 m, in june and august-october. the high density of juveniles mainly determines the higher biomass. maturity can start at a total length of 126 mm, but the size of first maturity is 135 mm of total length. reproduction occurs from may to october with two evident peaks during may and august in depths greater than 18 m. the juveniles are found in the shelf and inside of the terminos lagoon. recruitment is from june to october (rainy season). the visceral and gonadic indices showed that the greatest alimentary activity is from june to august and in november. the condition factor is lowest in june, where the recruitment is highest, and highest in november, after spawning.
Distribución, abundancia y reproducción de Opisthonema oglinum (Pisces: Clupeidae) en la plataforma continental del sur del Golfo de México
M. C. García-Abad,A. Yá?ez-Arancibia,P. Sánchez-Gil,M. Tapia-García
Revista de Biología Tropical , 1998,
Abstract: Se analizan diversos aspectos de la biología y ecología de Opisthonema oglinum con base en 813 individuos obtenidos en seis cruceros oceanográficos. Esta especie dependiente estuarina, se distribuye en la Sonda de Campeche entre los 12 y 36 m. Las hembras tienen una talla de primera madurez de 135 mm de LT. Se reproduce desde mayo a octubre, con dos máximos en mayo y agosto, a profundidades mayores de 18 m. Los juveniles se encuentran en la plataforma y dentro de la Laguna de Términos. El reclutamiento se presenta en junio y octubre. Las máximas abundancias se presentan alrededor de las isobatas de 12 y 36 m, y en nortes en el área carbonatada. At present the ecological understanding and evaluation of tropical demersal fish communities have their bases on studies about the biology and ecology of dominant species. The Campeche Sound, in the southern Gulf of Mexico, has more than 300 species in the demersal fish community and 30 are dominants. Among these species, Opisthonema oglinum is dominant by its frequency, distribution and abundance. This work determined the pattern of abundance and distribution of O. oglinum, and its reproduction, maturity and recruitment. Fish were collected with a shrimp trawl net during six oceanographic cruises in the Campeche Sound. The cruises correspond with the three characteristic seasons in the area: rainy, "nortes", and dry season. A total of 813 individuals with sizes between 56 and 205 mm of total length were collected; they weighted 30 211.5 g. O. oglinum is a typical pelagic-neritic species, and is estuarine dependent. This species occurs in the inner shelf waters of the Campeche Sound, less than 36 m deep and mainly in areas influenced by coastal discharges. It also occurs in the Terminos Lagoon (southern Campeche Sound) and occasionally in the riverine systems that drain into the lagoon. The highest biomass and density are on depths lesser than 20 m, in June and August-October. The high density of juveniles mainly determines the higher biomass. Maturity can start at a total length of 126 mm, but the size of first maturity is 135 mm of total length. Reproduction occurs from May to October with two evident peaks during May and August in depths greater than 18 m. The juveniles are found in the shelf and inside of the Terminos Lagoon. Recruitment is from June to October (rainy season). The visceral and gonadic indices showed that the greatest alimentary activity is from June to August and in November. The condition factor is lowest in June, where the recruitment is highest, and highest in November, after spawning.
Fish community structure in San Agustín Bay, Huatulco, Mexico
RAMíREZ-GUTIéRREZ,MARTíN; TAPIA-GARCíA,MARGARITO; RAMOS-SANTIAGO,EDUARDO; ULLOA,RAúL;
Revista chilena de historia natural , 2007, DOI: 10.4067/S0716-078X2007000400003
Abstract: san agustín bay is one of the most important bays in the huatulco national park because it includes the broadest coral reef surface of this park, which supports a great diversity of fish species. the importance of the present work is that describes quantitatively, for first time, the fish assemblage of this reef area. visual censuses were realized on transects, according to the coral reef size, on coral and rocky reefs, and coral rubble environments. 64 species, 46 genus and 29 families were registered. seasonal variation in fish assemblage was observed; reflecting the influence of pelagic shoaling species associated with the gulf of tehuantepec upwelling, during the dry season. thus species were selar crumenophthalmus, caranx caninus, and sardinops caeruleus. for species more closely associated to the reef habitat little seasonal variation was observed for each species, except chromis atrilobata, which exhibited high density during the dry season. pomacentrids exhibited more affinity for coral reef, labrids and haemulids for coral rubble environments. the highest diversity values were on coral rubble and the highest density was on the coral reef. our study suggests that in this region, the gulf of tehuantepec upwelling is an important factor as well as the heterogeneity of habitats in shaping the fish assemblages, which must be protected to maintain the biodiversity of this important ecosystem
Fish community structure in San Agustín Bay, Huatulco, Mexico Estructura comunitaria de peces en bahía San Agustín, Huatulco, México
MARTíN RAMíREZ-GUTIéRREZ,MARGARITO TAPIA-GARCíA,EDUARDO RAMOS-SANTIAGO,RAúL ULLOA
Revista chilena de historia natural , 2007,
Abstract: San Agustín bay is one of the most important bays in the Huatulco National Park because it includes the broadest coral reef surface of this park, which supports a great diversity of fish species. The importance of the present work is that describes quantitatively, for first time, the fish assemblage of this reef area. Visual censuses were realized on transects, according to the coral reef size, on coral and rocky reefs, and coral rubble environments. 64 species, 46 genus and 29 families were registered. Seasonal variation in fish assemblage was observed; reflecting the influence of pelagic shoaling species associated with the Gulf of Tehuantepec upwelling, during the dry season. Thus species were Selar crumenophthalmus, Caranx caninus, and Sardinops caeruleus. For species more closely associated to the reef habitat little seasonal variation was observed for each species, except Chromis atrilobata, which exhibited high density during the dry season. Pomacentrids exhibited more affinity for coral reef, labrids and haemulids for coral rubble environments. The highest diversity values were on coral rubble and the highest density was on the coral reef. Our study suggests that in this region, the Gulf of Tehuantepec upwelling is an important factor as well as the heterogeneity of habitats in shaping the fish assemblages, which must be protected to maintain the biodiversity of this important ecosystem La bahía de San Agustín es una de las más importantes del Parque Nacional Huatulco debido a que incluye al arrecife coralino más grande de este parque, el cual alberga una gran diversidad de especies de peces. La importancia del presente trabajo es describir cuantitativamente, por primera vez, la comunidad de peces de este habitat de arrecifes. Para ello se realizaron censos visuales en transectos de acuerdo al tama o de los ambientes coralino, rocoso y de escombros. 64 especies, 46 géneros y 29 familias fueron registrados. Se observaron cambios estacionales en la comunidad de peces, reflejando la influencia de las especies pelágicas asociadas a la surgencia del golfo de Tehuantepec, durante la temporada de secas. Estas especies fueron Selar crumenophthalmus, Caranx caninus y Sardinops caeruleus. Para las especies más cercanamente asociadas al arrecife, peque as variaciones estacionales fueron observadas para cada una de las especies, a excepción de Chromis atrilobata, que mostró alta densidad en la temporada de secas. Los pomacentridos mostraron mayor afinidad por el arrecife coralino, los labridos y haemulidos por el ambiente de escombros de coral. La mayor div
Reproducción, distribución y abundancia del pez Pseudupeneus grandisquamis (Perciformes: Mullidae), en el Golfo de Tehuantepec, México
Ramos-Santiago,Eduardo; Ramírez-Gutiérrez,José Martín; Mendoza-Rodríguez,Ricardo; Tapia-García,Margarito;
Revista de Biología Tropical , 2006,
Abstract: reproduction, distribution and abundance of the fish pseudupeneus grandisquamis (perciformes: mullidae), in the gulf of tehuantepec, mexico. as result of its biological and ecological strategies, pseudupeneus grandisquamis is a dominant species in the demersal community of the gulf of tehuantepec, mexico. our main objective was to understand these strategies with respect to distribution, abundance and reproduction. we analyzed 5 175 individuals representing partial collections from five oceanographic expeditions between 1989 and 1990. it is a typical demersal marine species, with a wide distribution on the continental shelf. the highest abundance of p. grandisquamis occurs in march and november, around the 40 m isobath, facing the superior-inferior lake systems and mar muerto lagoon. reproduction occurred during all of the months studied, particularly from august to october, corresponding to the rainy season, when the salinity and temperature is lower. the presence of juveniles, principally in november and march, suggests a long period of recruitment; they are distributed mainly in the superior-inferior lagoons, which serves as a nursery area where they remain until they are adults. the total female to male sex ratio was nearly 1:1 throughout the year. the maximum total length was 213 mm and the size at first maturity was 138 mm tl. the high abundance and reproduction occur when the gulf has a high level of ecological production, in accordance with the dynamics of the system, where the influence of coastal lagoons is important. protection strategies for the area above the continental shelf of the gulf of tehuantepec are recommended for the estuary processes and for the reproduction and rearing of a large number of species, including p. grandisquamis. rev. biol. trop. 54 (4): 1103-1112. epub 2006 dec. 15.
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