BIOMETRIC AND REPRODUCTIVE INDICATORS IN Perna perna (Linnaeus, 1758) MUSSELS FROM COASTAL MARICULTURE IN RIO DE JANEIRO, BRAZIL

Indicadores biométricos e reprodutivos em mexilhões Perna perna (Linnaeus, 1758) de mariculturas costeiras no Rio de Janeiro, Brasil

Autores/as

  • Carlos Eduardo de Freitas Guimarães Filho UNIVERSIDADE FEDERAL FLUMINENSE
  • Flávia Aline Andrade Calixto Fundação Instituto de Pesca do Estado do Rio de Janeiro - FIPERJ
  • Maria Carmela Kasnowski Holanda Duarte Universidade Federal Fluminense - UFF
  • Eliana de Fátima Marques de Mesquita Universidade Federal Fluminense - UFF

DOI:

https://doi.org/10.32360/acmar.v56i2.71941

Resumen

The aim of this study was to analyze biometric and  reproductive mussel indicators (Perna  perna) from coastal maricultures in Rio de Janeiro, Brazil. The  collections were carried out with a total of 480 animals in the four seasons of the year (autumn, winter, spring and summer), from  March 2019 to February 2020. Two mussel samples were collected each season (n = 60) with  average measurements of 23.9 mm for width, 33.8 mm for height, 69.9 mm for length, and 28.3 g for weight (shell + soft parts) in both coastal regions. Samples from Forno beach exhibited higher homogeneity in the winter for all  evaluated parameters (width, height, length and weight). Mussel weight was the most variable parameter due to factors such as water flow, nutrients, and gonadal  maturation stage. Regarding reproductive parameters, a predominance of females was observed  at both beaches throughout all four seasons. Additionally, a predominance of both males and females at substage IIIA was observed during autumn and winter, while substage IIIC showed the highest presence in spring and summer.

Keywords: Bivalve Mollusk; Growth indicators; Marine Biology; Reproduction

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Publicado

2023-12-18