Reproduction and community structure of fish from winter catch sites from industrial shrimp bycatch from the northeast and southeast Mexican Pacific

Tirado-Ibarra, Jorge de Jesus; Loya-Rodriguez, Mariany; Morales-Arevalo, Jose Carlos; Muñoz-Garcia, Isabel Rosario; Martínez-Pérez, Francisco; Ramírez‐Pérez, Jorge Saúl; Jiménez-Gutiérrez, Laura Rebeca

doi:10.7717/peerj.4460

Cited by 4 publications

(1 citation statement)

References 31 publications

(43 reference statements)

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“…Para evaluar el efecto de la madurez sobre la ecología trófica, los individuos se dividieron según su longitud total en juveniles y adultos, como se observa en las ecuaciones 6 y 7 (Tirado-Ibarra et al, 2018). Para detallar la variación espaciotemporal, se utilizaron el nMDS y el permANOVAs para identificar las asociaciones y los cambios en la dieta de las especies ocurridos entre épocas (lluvia-seca) y áreas (interna-externa).…”

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Ecología trófica y consumo incidental de microplásticos en peces (Sciaenidae) y su relación con la dinámica ambiental en la bahía de Tumaco, Pacífico colombiano

Vivas-Sánchez,

Gamboa-García,

Duque

2023

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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La familia de peces Sciaenidae es importante para el comercio y la soberanía alimentaria de los habitantes de la bahía de Tumaco, en el Pacífico colombiano. Sin embargo, hay pocos estudios sobre sus hábitos tróficos en esta bahía. En ese contexto, en este estudio nos propusimos determinar la ecología trófica y la ingesta incidental de microplásticos en peces Sciaenidae, así como su relación con la dinámica ambiental en la bahía de Tumaco. Para ello se hicieron cuatros muestreos (2020-2021) con artes de pesca artesanales (anzuelo, changa, transmallo) y se capturaron 467 individuos para examinar el contenido estomacal de los peces. Los ítems alimentarios fueron pesados y clasificados. Se estimó para cada especie la preferencia de presa, la similitud y diferencias espaciotemporales en las dietas y la asociación entre la dieta y los factores ambientales. Se encontró que los crustáceos representaron un ítem alimentario de consumo constante (92 %) y de gran importancia (80 %) para la mayoría de las especies. Además, los mayores consumos de crustáceos se presentaron en la zona externa del estuario, asociada a una mayor salinidad, oxígeno disuelto y transparencia, lo que determina mayor abundancia y riqueza de este recurso. Por otro lado, se detectó la ingesta incidental de microplásticos en 30 ejemplares, pertenecientes a 10 especies (70 % de ellas de interés comercial). Se concluyó que en la bahía de Tumaco se aprovechan los crustáceos, un recurso alimenticio común y abundante, y se evidenció la presencia de microplásticos en los peces.

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Section: Tratamiento De Datosunclassified

Ecología trófica y consumo incidental de microplásticos en peces (Sciaenidae) y su relación con la dinámica ambiental en la bahía de Tumaco, Pacífico colombiano

Vivas-Sánchez,

Gamboa-García,

Duque

2023

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Crustaceans from shrimp by-catch from the southeastern Gulf of California to the southeastern Mexican Pacific: implications in their community structure and reproduction

et al. 2020

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In tropical countries, a large number of finfish species and invertebrates are captured as by-catch, including several species of crustaceans, due to the low selectivity of the fishing methods. By-catch presents and optimal opportunity to study populations of crustaceans. Here, the goal was to determine the community structure, specifically through the size structure, as well as the average sizes at first maturity of crustacean species present in the shrimp by-catch caught aboard a fishing vessel operating in the Mexican Pacific, from Sinaloa to Guerrero, Mexico. From the 18 crustaceans found in this study, the crabs Euphylax robustus and Achelous asper were the dominant species, whereas four species were considered casual (i.e., not frequent). Interestingly, more than 40% of the organisms analysed were in the juvenile stage, and 19% were ovigerous females. The results demonstrate the negative impact of the low selectivity of shrimp trawls on the communities of species of Crustacea.

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Population structure, size at first sexual maturity, and feeding ecology of Conodon nobilis (Actinopterygii: Perciformes: Haemulidae) from the coasts of Pernambuco, north-eastern Brazil

Lira¹,

Viana²,

Eduardo³

et al. 2019

Acta Ichthyol. Piscat.

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Background. Although the information on fish ecology and population dynamic are fundamental for fisheries assessment and the development of sustainable management practices, there is still a gap for bycatch species, mainly in tropical coastal areas. The aim of the presently reported study was to describe the feeding habitats, mean length of maturation, and the population structure of Conodon nobilis (Linnaeus, 1758) caught as bycatch of the shrimp trawl fisheries in the south of Pernambuco, northeastern Brazil. Materials and methods. Specimens of C. nobilis were collected monthly from August 2011 through July 2012, using an artisanal shrimp outrigger trawler from the local fleet. The population structure was analysed by sex, length, and seasons. Stomachs and gonads were removed and examined to define the length at first maturity (L 50) and the feeding habits of C. nobilis in northeastern Brazil. Results. A total of 272 specimens were caught. The sex ratio was similar among females and males in the area. The mean size at first maturity (L 50) was estimated as 14.3 ± 0.65 cm. The diet of the species was mainly based on crustaceans (Penaeidae) and fish, however, it was not observed differences in the diet between juvenile and adults, and climate seasons. Conclusion. Conodon nobilis was classified as a zoobenthivore species, and showed a higher proportion of individuals caught above the L 50. The information here provided, combined with other studies in the region, may contribute to the development of improved management strategies to species conservation and exploited marine habitats in northeast Brazil, which is still mostly unknown.

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Reproduction and community structure of fish from winter catch sites from industrial shrimp bycatch from the northeast and southeast Mexican Pacific

Cited by 4 publications

References 31 publications

Ecología trófica y consumo incidental de microplásticos en peces (Sciaenidae) y su relación con la dinámica ambiental en la bahía de Tumaco, Pacífico colombiano

Ecología trófica y consumo incidental de microplásticos en peces (Sciaenidae) y su relación con la dinámica ambiental en la bahía de Tumaco, Pacífico colombiano

Crustaceans from shrimp by-catch from the southeastern Gulf of California to the southeastern Mexican Pacific: implications in their community structure and reproduction

Population structure, size at first sexual maturity, and feeding ecology of Conodon nobilis (Actinopterygii: Perciformes: Haemulidae) from the coasts of Pernambuco, north-eastern Brazil

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