The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina

Pinguipes brasilianus is a conspicuous and abundant rocky-reef fish inhabiting the Northern Patagonian gulfs of Argentina, Southwest Atlantic. This study describes its reproductive biology in this region. We made macroscopic and histological descriptions of the testis and ovary development, analyzed...

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Autores principales: Villanueva-Gomila, G.L., Macchi, G.J., Ehrlich, M.D., Irigoyen, A.J., Venerus, L.A.
Formato: JOUR
Materias:
Batch fecundity
Gonadosomatic index
Length at 50% maturity
Rocky-reef fishes
Southwest Atlantic
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_16796225_v13_n4_p733_VillanuevaGomila
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_16796225_v13_n4_p733_VillanuevaGomila
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spelling todo:paper_16796225_v13_n4_p733_VillanuevaGomila2023-10-03T16:29:43Z The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina Villanueva-Gomila, G.L. Macchi, G.J. Ehrlich, M.D. Irigoyen, A.J. Venerus, L.A. Batch fecundity Gonadosomatic index Length at 50% maturity Rocky-reef fishes Southwest Atlantic Pinguipes brasilianus is a conspicuous and abundant rocky-reef fish inhabiting the Northern Patagonian gulfs of Argentina, Southwest Atlantic. This study describes its reproductive biology in this region. We made macroscopic and histological descriptions of the testis and ovary development, analyzed the evolution of the gonadosomatic index (GSI) in both sexes throughout the year, and estimated fecundity and length at 50% maturity for females. Pinguipes brasilianus is a multiple spawner with indeterminate annual fecundity and an extended reproductive season, encompassing austral spring and summer. Low GSI values in males (monthly means ranged between 0.11% and 0.75%) and low relative fecundity in female fish (between 2 and 44 oocytes/g) are consistent with a need of close proximity between male and female during oocyte fertilization, sexual courtship and with spawning in pairs and/or within reef crevices. The estimated length at 50% maturity (± SD) for females was 15.22 ± 0.43 cm total length. Although P. brasilianus shares the main reproductive features of its congeneric species Pinguipes chilensis, male and female length at 50% maturity in P. brasilianus were markedly lower than those reported for P. chilensis, while relative and batch fecundity were greater in fish of the same size. © 2015 Sociedade Brasileira de Ictiologia. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_16796225_v13_n4_p733_VillanuevaGomila
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Batch fecundity
Gonadosomatic index
Length at 50% maturity
Rocky-reef fishes
Southwest Atlantic
spellingShingle Batch fecundity
Gonadosomatic index
Length at 50% maturity
Rocky-reef fishes
Southwest Atlantic
Villanueva-Gomila, G.L.
Macchi, G.J.
Ehrlich, M.D.
Irigoyen, A.J.
Venerus, L.A.
The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina
topic_facet Batch fecundity
Gonadosomatic index
Length at 50% maturity
Rocky-reef fishes
Southwest Atlantic
description Pinguipes brasilianus is a conspicuous and abundant rocky-reef fish inhabiting the Northern Patagonian gulfs of Argentina, Southwest Atlantic. This study describes its reproductive biology in this region. We made macroscopic and histological descriptions of the testis and ovary development, analyzed the evolution of the gonadosomatic index (GSI) in both sexes throughout the year, and estimated fecundity and length at 50% maturity for females. Pinguipes brasilianus is a multiple spawner with indeterminate annual fecundity and an extended reproductive season, encompassing austral spring and summer. Low GSI values in males (monthly means ranged between 0.11% and 0.75%) and low relative fecundity in female fish (between 2 and 44 oocytes/g) are consistent with a need of close proximity between male and female during oocyte fertilization, sexual courtship and with spawning in pairs and/or within reef crevices. The estimated length at 50% maturity (± SD) for females was 15.22 ± 0.43 cm total length. Although P. brasilianus shares the main reproductive features of its congeneric species Pinguipes chilensis, male and female length at 50% maturity in P. brasilianus were markedly lower than those reported for P. chilensis, while relative and batch fecundity were greater in fish of the same size. © 2015 Sociedade Brasileira de Ictiologia.
format JOUR
author Villanueva-Gomila, G.L.
Macchi, G.J.
Ehrlich, M.D.
Irigoyen, A.J.
Venerus, L.A.
author_facet Villanueva-Gomila, G.L.
Macchi, G.J.
Ehrlich, M.D.
Irigoyen, A.J.
Venerus, L.A.
author_sort Villanueva-Gomila, G.L.
title The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina
title_short The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina
title_full The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina
title_fullStr The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina
title_full_unstemmed The reproductive biology of Pinguipes brasilianus Cuvier, 1829 (Osteichthyes: Pinguipedidae) in temperate rocky reefs of Argentina
title_sort reproductive biology of pinguipes brasilianus cuvier, 1829 (osteichthyes: pinguipedidae) in temperate rocky reefs of argentina
url http://hdl.handle.net/20.500.12110/paper_16796225_v13_n4_p733_VillanuevaGomila
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