Your browser doesn't support javascript.
loading
Length-based estimates of growth parameters and mortality rates of fish populations from a coastal zone in the Southeastern Brazil
Costa, Marcus Rodrigues da; Tubino, Rafael de Almeida; Monteiro-Neto, Cassiano.
Afiliação
  • Costa, Marcus Rodrigues da; Universidade Federal Fluminense. Laboratório de Biologia do Nécton e Ecologia Pesqueira. Niterói. BR
  • Tubino, Rafael de Almeida; Universidade Federal Rural do Rio de Janeiro. Departamento de Biologia Animal. Seropédica. BR
  • Monteiro-Neto, Cassiano; Universidade Federal Fluminense. Laboratório de Biologia do Nécton e Ecologia Pesqueira. Niterói. BR
Zoologia (Curitiba, Impr.) ; 35: e22235, 2018. map, tab
Article em En | VETINDEX | ID: biblio-1504531
Biblioteca responsável: BR68.1
ABSTRACT
Small-scale fisheries in Brazil contribute to a significant share of total fish production, accessing a large variety of species. Life history parameters from these resources are important for their management and conservation, based on primary data. The objective of this article is to generate growth parameters and mortality rates of ten fish populations from a coastal zone in Southeastern Brazil. Monthly samples were taken between January 2011 and November 2014 from landings of the beach-seine fishery in an area adjacent to the entrance of the Guanabara Bay. All fishes were measured (total length) and weighed. The length-weight relationships (LWR) were estimated by linear regression analysis on log-transformed data of the equation W = aL b . The Von Bertalanffy Growth Function (VBGF) was fitted to size-at-age data to obtain growth parameters (K, L ∞ ). The length-converted catch curve was used for estimating the instantaneous total mortality (Z). Taylor’s equations provided an independent estimate of the natural mortality (M) and longevity. The difference between Z and M derived Fishing mortality (F). A total of 2,938 individuals from ten fish species were used to determine the length-weight relationships. Harengula clupeola (Cuvier, 1829) has a new maximum length record for the FishBase LWR database. Sardinella brasiliensis (Steindachner, 1879) presented the smallest and largest size recorded for LWR observed in the literature and FishBase database. Upeneus parvus showed the greatest total length, while Trichiurus lepturus Linnaeus, 1758, Orthopristis ruber (Cuvier, 1830) and Dactylopterus volitans (Linnaeus, 1758) presented the smallest sizes for LWR in FishBase. The other species showed parameters within the expected values for each group. The performance index combining information from Kand L ∞ presented values between 2.32 and 3.76 and were considered appropriate for the populations evaluated.
Assuntos
Palavras-chave

Texto completo: 1 Base de dados: VETINDEX Assunto principal: Pesos e Medidas Corporais / Mortalidade / Peixes / Características de História de Vida Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Zoologia (Curitiba, Impr.) Ano de publicação: 2018 Tipo de documento: Article / Project document

Texto completo: 1 Base de dados: VETINDEX Assunto principal: Pesos e Medidas Corporais / Mortalidade / Peixes / Características de História de Vida Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Zoologia (Curitiba, Impr.) Ano de publicação: 2018 Tipo de documento: Article / Project document