Biologia Reprodutiva da Pescada Amarela (Cynoscion acoupa) Capturada na Baía de São Marcos, Maranhão, Brasil

Abstract

RESUMO. O presente trabalho objetivou determinar o período reprodutivo, a fecundidade e o tipo de desova de Cynoscion acoupa (Lacèpede, 1801 Sciaenidae) proveniente da pesca artesanal realizada na Baía de São Marcos, Maranhão. Os exemplares foram coletados bimestralmente no período de maio de 2007 a março de 2008. Foram obtidos dados biométricos e para determinação do período reprodutivo verificou-se o estádio de maturação das gônadas. Para definir a fecundidade realizou-se a contagem dos ovócitos. E o tipo de desova foi verificado a partir da análise da frequência relativa das classes de diâmetro dos ovócitos. Os resultados permitiram identificar dois picos de desova para C. acoupa da Baía de São Marcos, sendo um entre os meses de novembro/dezembro (início das chuvas) e outro em março/abril (período de chuvas mais fortes na região). A fecundidade variou entre 9.832.960 e 14.340.373 ovócitos. A desova é do tipo assincrônica e parcelada com picos reprodutivos no período chuvoso. Tais resultados estão dentro do esperado para as espécies tropicais e subtropicais.

Ontogenetic resource utilization and migration reconstruction with δ13C values of essential amino acids in the Cynoscion acoupa otolith

“…Our results also show that coastal phytoplankton and freshwater algae contribute the most as resources to the juvenile C. acoupa community and that direct contributions from mangrove‐derived resources are negligible. This agrees with the spawning behavior of C. acoupa in North Brazil, which occurs with the rainy seasons (Almeida et al., ). Large numbers of larval and juvenile C. acoupa coincide with large blooms in zooplankton and shrimp populations in the mangrove estuaries, which often rely on planktonic and algal diets (Barletta‐Bergan, Barletta, & Saint‐Paul, ; Barletta‐Bergan et al., ; Ferreira et al., ; Lima et al., ).…”

“…This sciaenid species occurs on the coastal shelf along the entire coast of Brazil and utilizes the mangrove estuaries as larvae and juveniles (Barletta et al., ; Barletta‐Bergan, Barletta, & Saint‐Paul, ; Lima, Barletta, & Costa, , Figure ). In northern Brazil, C. acoupa spawns offshore at the onset and during the wet seasons and sexual maturation occurs ~40 cm (Almeida, Santos, Sousa, Carvalho Neta, & Andrade, ). It has a carnivorous diet, which consists mainly of shrimp and fish as well as small crustaceans and polychaetes in the juvenile stage (Ferreira et al., ).…”

The Fishery Exploitation of Acoupa Weakfish Off São Paulo Coast, Southeastern Brazil

“…This contrast with the situation described for Brazilian North coast, where Acoupa weakfish production is much larger and the attached socio-economic importance is much greater, and therefore there is more research on the species (e.g. Matos and Lucena, 2006;Rodrigues et al, 2008;Mourão et al, 2009, Almeida et al, 2011Barletta et al, 1998Barletta et al, , 2003Almeida, 2016;Ferreira et al, 2016;Vane et al, 2018). Thus, Acoupa weakfish fishery off São Paulo State may be characterized as "data-poor" (i.e.…”

“…The Acoupa weakfish Cynoscion acoupa (Lacepède, 1801) comprises an important fishery resource in South America, particularly off the Brazilian coast (Almeida, 2016). This large inshore sciaenid (reaching 175 cm and up to 14 kg) has a wide latitudinal distribution on the western Atlantic, ranging from Panamá (14°N) to northern Argentina (40°S), inhabiting soft bottoms between 1-35 m deep (Barletta et al, 2003;Almeida, 2016;Matos and Lucena, 2006). The species is valued mostly by its swim bladder (which is exported dried to Asiatic markets), being also regarded as an important food fish (Mourão et al, 2009).…”

Fish assemblage structure in a port region of the Amazonic coast

“…This pattern was mainly driven by G. luteus, L. piquitinga, B. ronchus, S. proops, S. janeiro, M. ancylodon and M. gaimardianus. The species that contributed the most to the total biomass are highly predominant in the coast of Maranhão (Azevedo et al, 2008;Carvalho-Neta & Castro, 2008;Carvalho-Neta et al, 2012;Azevedo et al, 2012;Almeida et al, 2016;Azevedo et al, 2017). Cyclic changes in the intertidal fish fauna did not affect overall density and biomass throughout the years.…”