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Variación espacio-temporal en la composición del ensamble de macroalgas del intermareal rocoso de Maitencillo, Valparaíso, costa central de Chile

Reproductive biology of king weakfish, Macrodon ancylodon (Perciformes, Sciaenidae) from the northeastern coast of Brazil

Authors

CORRESPONDING

Alana dos Santos Cardoso

ealana@hotmail.com

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Laboratory of Fisheries and Aquatic Ecology (Laboratório de Pesca e Ecologia Aquática-LabPEA), State University of Maranhão (UEMA), Cidade Universitária Paulo VI, S/N-Tirirical, Cidade Operária, CEP 65055-310, São Luís, MA, Brasil

Nayara Barbosa Santos

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Laboratory of Fisheries and Aquatic Ecology (Laboratório de Pesca e Ecologia Aquática-LabPEA), State University of Maranhão (UEMA), Cidade Universitária Paulo VI, S/N-Tirirical, Cidade Operária, CEP 65055-310, São Luís, MA, Brasil

Zafira da Silva de Almeida

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Laboratory of Fisheries and Aquatic Ecology (Laboratório de Pesca e Ecologia Aquática-LabPEA), State University of Maranhão (UEMA), Cidade Universitária Paulo VI, S/N-Tirirical, Cidade Operária, CEP 65055-310, São Luís, MA, Brasil

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Department of Chemistry and Biology, State University of Maranhão (UEMA), Cidade Universitária Paulo VI, S/N-Tirirical, Cidade Operária, CEP 65055-310, São Luís, MA, Brasil

Raimunda N. Fortes C. Neta

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Department of Chemistry and Biology, State University of Maranhão (UEMA), Cidade Universitária Paulo VI, S/N-Tirirical, Cidade Operária, CEP 65055-310, São Luís, MA, Brasil

Lorrane Gabrielle Cantanhêde

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Laboratory of Fisheries and Aquatic Ecology (Laboratório de Pesca e Ecologia Aquática-LabPEA), State University of Maranhão (UEMA), Cidade Universitária Paulo VI, S/N-Tirirical, Cidade Operária, CEP 65055-310, São Luís, MA, Brasil

Abstract

The reproductive biology of Macrodon ancylodon, a commercially important fish widely distributed along South America’s Atlantic coast, is described from 240 specimens collected in northeastern Brazil. Specimens ranged from 18.2 to 33.5 cm in length, exhibiting positive allometry. Total length at first sexual maturity was 21.13 cm. M. ancylodon has an asynchronous gonadal maturation and would be a batch spawner within a reproductive period. Total weight and length of females do not affect the relative fecundity values in this species. Analysis of the gonadosomatic index, condition factor and frequency of maturational stages shows that M. ancylodon was capable of reproducing throughout the year, despite the fact that spawning peaks were observed during November-December and August-September. The results are evidence that the study area is used by M. ancylodonfor reproduction. The data will also be important for the development of stock management strategies.

Key words

Reproduction, estuarine fish, gonad, gonadosomatic index, spawning, condition factor

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