Reproductive biology and recruitment of bluefish Pomatomus saltatrix (Perciformes: Pomatomidae) in the southwestern Atlantic

By

De Souza, Geysa Marinho
Monteiro-Neto, Cassiano
Da Costa, Marcus Rodrigues
Bastos, Ana Luiza
Martins, Raquel Rennó Mascarenhas
Vieira, Francyne Carolina Dos Santos
De Andrade-Tubino, Magda Fernandes
Tubino, Rafael de Almeida

Type

Article

Date of Publication

2021-2-3

Original Publication

Subterranean Biology

Volume

38

Pages

1--14

Subjects

fecundity , Histology , oocyte development , reproductive dynamics , spawning seasons , young-of-the-year

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zoologia.38.e53756

 

Abstract

The bluefish, Pomatomus saltatrix (Linneus 1766) is captured by industrial, artisanal, and recreational fisheries throughout its distribution range. The reproductive biology of P. saltatrix in the southwestern Atlantic was studied using 1,102 specimens captured by the Brazilian commercial fleet between March 2014 and December 2015. The recruitment period was identified from records of juveniles in experimental beach seine hauls carried out on sandy beaches in the external sector of Guanabara Bay for four years (2012–2015). Based on the reproductive indices and on the macro- and microscopic analyses of the gonads, spawning peaks were identified in autumn and spring. The size at first maturity was estimated at 35.5, 38.3, and 37.4 cm for females, males, and general, respectively. Ovary analyses and measurements of the oocyte diameters indicated that bluefish are multiple spawners with asynchronous oocyte development. The batch fecundity estimate was 202,752.5 eggs and ranged from 9,800.9 to 426,787.0 eggs. The species reproduces throughout the entire study area, but it is more active in the south of Arraial do Cabo. The young-of-the-year were recorded on shallow water in all seasons, with modal peaks in the summer months. The parameters estimated in this study expand and update information on this species, providing important data for the evaluation and fisheries management of the stock of P. saltatrix in the southwestern Atlantic.