Reproductive biology and recruitment of bluefish Pomatomus saltatrix (Perciformes: Pomatomidae) in the southwestern Atlantic
| Autor: | Francyne Carolina dos Santos Vieira, Ana L. Bastos, Magda Fernandes de Andrade-Tubino, Geysa Marinho de Souza, Raquel Rennó M. Martins, Cassiano Monteiro-Neto, Rafael de Almeida Tubino, Marcus Rodrigues da Costa |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Range (biology) 010603 evolutionary biology 01 natural sciences Perciformes reproductive dynamics histology Reproductive biology Animalia Pomatomidae Chordata spawning seasons Actinopterygii biology 010604 marine biology & hydrobiology Pomatomus oocyte development biology.organism_classification Fecundity Pomatomus saltatrix Fishery Waves and shallow water QL1-991 Animal Science and Zoology Fisheries management Bay Zoology young-of-the-year |
| Zdroj: | Zoologia (Curitiba) v.38 2021 Zoologia (Curitiba. Online) Sociedade Brasileira de Zoologia instacron:SBZ Zoologia (Curitiba), Vol 38, Iss, Pp 1-14 (2021) Zoologia 38: 1-14 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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