Estudo dos aspectos reprodutivos do trichiurus lepturus (linnaeus, 1758) na Costa Maranhense, Brasil

Nunes, Yago Bruno Silveira; Silva, Ladilson Rodrigues; Freitas, Jailza; Figueiredo, Marina Bezerra

doi:10.34117/bjdv6n1-299

Cited by 4 publications

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“…In addition, L 50 of males was not estimated due to the low frequency of immature individuals in the sample. However, it is well established that males present smaller L 50 than females across their distribution (Del Toro, 2001; Narasimham, 1994; Nunes et al, 2020). The spatial segregation of males and females as a reproductive strategy may contribute to differing sexual development driven by oceanographic variations, particularly in food availability (Martins et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Reproductive aspects of the largehead hairtail have been investigated in various regions worldwide, including South America, Asia, and the West African coast (Cruz‐Torres et al, 2014; Nunes et al, 2020; Taghavimotlagh et al, 2021; Amador & Aggrey‐Fynn, 2020). Within Brazilian waters, research efforts have predominantly focused on the southeastern and southern regions.…”

Section: Introductionmentioning

confidence: 99%

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Unveiling the reproductive and migrative behavior ofTrichiurus lepturusin a tropical environment: Insights and implications

Santos,

Leite,

Andrade

2024

Journal of Fish Biology

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This study aimed to understand the reproductive biology and migrative behavior of the largehead hairtail Trichiurus lepturus in a tropical area, specifically off Pernambuco coast, northeastern Brazil. Commercial catches from fish corrals provided samples for analysis, including measurements, weight recording, and examination of gonads to determine its maturation stage. Reproductive analyses were performed, such as sex ratio, gonado‐somatic index, and sizes at first maturity. There was a slightly higher proportion of females among the 141 largehead hairtail specimens analysed. No significant differences were observed in length distributions between males and females. However, during the winter, significant differences were observed in length distributions for grouped sexes. The species exhibited a seasonal migratory pattern, with a higher presence on the continental shelf during the winter. The study identified strategic allocation of energy in feeding activities and temporal spacing of reproductive cycles, as indicated by the sex ratio and abundance of individuals during different seasons. Fish corrals probably do not harm largehead hairtail population off the southwestern Atlantic tropical coast, with minimal capture of individuals below the size of first maturity. The insights of the study into reproductive and migration patterns contribute to future assessments and management strategies for this species and corral fisheries.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Unveiling the reproductive and migrative behavior ofTrichiurus lepturusin a tropical environment: Insights and implications

Santos,

Leite,

Andrade

2024

Journal of Fish Biology

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“…Estudo realizado por Winemiller (1989) apontou que peixes tropicais em ambientes sazonais como o T. lepturus geralmente podem ser adicionados aos estrategistas sazonais. Mateus et al (2007) e Nunes et al (2020), observaram que essas espécies aumentam seu estoque no período chuvoso, porque elas migram para a reprodução e desova total.…”

Section: Discussionunclassified

Estudo dos aspectos alimentares de Trichiurus lepturus (Pisces: Perciformes) na costa Maranhense, Brasil

Garcia

Matão

Nunes

et al. 2021

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O trabalho consiste em conhecer os aspectos da dieta natural do Trichiurus lepturus, uma vez que o mesmo apresenta grande valor comercial para o estado do Maranhão. A espécie analisada foi proveniente da pesca comercial, cuja captura aconteceu no município da Raposa – MA, entre os períodos de janeiro a dezembro de 2019. Foram estudados 144 organismos. Para cada espécie de presa, calcularam-se as frequências de ocorrência numérica e de biomassa e Índice de Importância Relativa (IIR) na dieta. Quanto aos itens alimentares presentes na dieta da espécie, observou-se uma dieta baseada em peixes, IND, sardinha (Sardinella brasiliensis) e camarões peneídeos. A região em estudo pode ser caracterizada como local de alimentação da espécie, visto que apresenta dieta composta por organismos neríticos de hábitos pelágicos associados a áreas costeiras e estuarinas, sendo peixes e IND os itens mais específicos na dieta. Observou-se que durante a estação seca (julho a dezembro), quando a produtividade biológica é baixa, a atividade alimentar aumenta. A dieta do macho é baseada em resto de peixes, enquanto a IND da fêmea é dominante. Todos os exemplares imaturos machos apresentaram seus estômagos totalmente preenchidos e as fêmeas apresentaram uma grande quantidade de itens não identificados (IND).

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Description of hyperostotic bones pattern in Largehead Hairtail Trichiurus lepturus

Tuna,

Calixto,

Mesquita

2024

Zoomorphology

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Estudo dos aspectos reprodutivos do trichiurus lepturus (linnaeus, 1758) na Costa Maranhense, Brasil

Abstract: Estudo dos aspectos reprodutivos do trichiurus lepturus (linnaeus, 1758) na Costa Maranhense, Brasil Study of the reproductive aspects of trichiurus lepturus (linnaeus, 1758) in Costa Maranhense, Brazil

Cited by 4 publications

References 4 publications

Unveiling the reproductive and migrative behavior ofTrichiurus lepturusin a tropical environment: Insights and implications

Unveiling the reproductive and migrative behavior ofTrichiurus lepturusin a tropical environment: Insights and implications

Estudo dos aspectos alimentares de Trichiurus lepturus (Pisces: Perciformes) na costa Maranhense, Brasil

Description of hyperostotic bones pattern in Largehead Hairtail Trichiurus lepturus

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