Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil

Detalhes bibliográficos
Autor(a) principal: Santana, Lígia Maria Borges Marques
Data de Publicação: 2018
Outros Autores: Rocha-Barreira, Cristina de Almeida
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/42008
Resumo: This study tested the hypothesis that the reproductive cycle of bivalve Phacoides pectinatus from Ceará river estuary, at semiarid coast of Brazil, is influenced by rainfall and dry seasonal variations. Thus, the seasonality of gonadal development stages of P. pectinatus was evaluated by histological analyzes of the gonads and correlated with temporal variations of temperature, salinity, and local rainfall. Specimens (> 8mm) were collected monthly from April 2008 to September 2009. Four stages of gonadal development were identified. A total of 366 specimens were analyzed and measured between 8.93 mm and 68.5 mm of total shell length. The P. pectinatus population in the Ceará river estuary presented a 1:1 sexual ratio with continuous reproduction, strongly conditioned by precipitation and salinity variations. The gametogenesis was predominant in February to May (rainy season) and the ripe and spawning occurs in July to December (dry period). The increased rainfall with the consequent decrease in salinity act as natural disturbance in the estuary, on an annual rate, contributing to the renewal of the population.
id UFC-7_2dc7ad3b454494ede2b983b6cc26f36e
oai_identifier_str oai:repositorio.ufc.br:riufc/42008
network_acronym_str UFC-7
network_name_str Repositório Institucional da Universidade Federal do Ceará (UFC)
repository_id_str
spelling Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of BrazilEfeito da variação sazonal da precipitação no ciclo reprodutivo do bivalve Phacoides pectinatus na costa semiárida do BrasilEstuáriosEstuariesPrecipitação (Meteorologia)Precipitation (Meteorology)GônadasGonadsThis study tested the hypothesis that the reproductive cycle of bivalve Phacoides pectinatus from Ceará river estuary, at semiarid coast of Brazil, is influenced by rainfall and dry seasonal variations. Thus, the seasonality of gonadal development stages of P. pectinatus was evaluated by histological analyzes of the gonads and correlated with temporal variations of temperature, salinity, and local rainfall. Specimens (> 8mm) were collected monthly from April 2008 to September 2009. Four stages of gonadal development were identified. A total of 366 specimens were analyzed and measured between 8.93 mm and 68.5 mm of total shell length. The P. pectinatus population in the Ceará river estuary presented a 1:1 sexual ratio with continuous reproduction, strongly conditioned by precipitation and salinity variations. The gametogenesis was predominant in February to May (rainy season) and the ripe and spawning occurs in July to December (dry period). The increased rainfall with the consequent decrease in salinity act as natural disturbance in the estuary, on an annual rate, contributing to the renewal of the population.Este estudo testou a hipótese de que o ciclo reprodutivo da bivalve Phacoides pectinatus do estuário do rio Ceará, no litoral semiárido do Brasil, é influenciado pelas variações sazonais de precipitação. Assim, a sazonalidade dos estágios de desenvolvimento gonadal de P. pectinatus foi avaliada por análises histológicas das gônadas e correlacionada com variações temporais de temperatura, salinidade e precipitação locais. Exemplares adultos foram coletados mensalmente de abril de 2008 a setembro de 2009, totalizando 366 indivíduos apresentando entre 8,93 mm e 68,5 mm de comprimento total de concha. Foram identificados quatro estágios de desenvolvimento gonadal. A população de P. pectinatus no estuário do rio Ceará apresentou razão sexual de 1:1, com reprodução contínua, fortemente condicionada por variações de precipitação e salinidade. A gametogênese foi predominante em fevereiro a maio (período chuvoso) e o estado maturo e a liberação de gametas ocorreram de julho a dezembro (período seco). O aumento das chuvas, com a consequente diminuição da salinidade, agem como perturbação natural no estuário, a uma taxa anual, contribuindo para a renovação da população.Instituto de Ciências do Mar2019-05-24T14:16:18Z2019-05-24T14:16:18Z2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSANTANA, L. M. B. M.; ROCHA-BARREIRA, C. de A. Rainfall seasonal variation effect on the reproductive cycle of the bivalve phacoides pectinatus from semiarid coast of Brazil. Arquivos de ciências do Mar. Fortaleza, v. 51, n. 2, p. 84-97, 2018.http://www.repositorio.ufc.br/handle/riufc/42008Santana, Lígia Maria Borges MarquesRocha-Barreira, Cristina de Almeidaengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2019-05-24T14:16:18Zoai:repositorio.ufc.br:riufc/42008Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:16:02.330802Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil
Efeito da variação sazonal da precipitação no ciclo reprodutivo do bivalve Phacoides pectinatus na costa semiárida do Brasil
title Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil
spellingShingle Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil
Santana, Lígia Maria Borges Marques
Estuários
Estuaries
Precipitação (Meteorologia)
Precipitation (Meteorology)
Gônadas
Gonads
title_short Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil
title_full Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil
title_fullStr Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil
title_full_unstemmed Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil
title_sort Rainfall seasonal variation effect on the reproductive cycle of the bivalve Phacoides pectinatus from semiarid coast of Brazil
author Santana, Lígia Maria Borges Marques
author_facet Santana, Lígia Maria Borges Marques
Rocha-Barreira, Cristina de Almeida
author_role author
author2 Rocha-Barreira, Cristina de Almeida
author2_role author
dc.contributor.author.fl_str_mv Santana, Lígia Maria Borges Marques
Rocha-Barreira, Cristina de Almeida
dc.subject.por.fl_str_mv Estuários
Estuaries
Precipitação (Meteorologia)
Precipitation (Meteorology)
Gônadas
Gonads
topic Estuários
Estuaries
Precipitação (Meteorologia)
Precipitation (Meteorology)
Gônadas
Gonads
description This study tested the hypothesis that the reproductive cycle of bivalve Phacoides pectinatus from Ceará river estuary, at semiarid coast of Brazil, is influenced by rainfall and dry seasonal variations. Thus, the seasonality of gonadal development stages of P. pectinatus was evaluated by histological analyzes of the gonads and correlated with temporal variations of temperature, salinity, and local rainfall. Specimens (> 8mm) were collected monthly from April 2008 to September 2009. Four stages of gonadal development were identified. A total of 366 specimens were analyzed and measured between 8.93 mm and 68.5 mm of total shell length. The P. pectinatus population in the Ceará river estuary presented a 1:1 sexual ratio with continuous reproduction, strongly conditioned by precipitation and salinity variations. The gametogenesis was predominant in February to May (rainy season) and the ripe and spawning occurs in July to December (dry period). The increased rainfall with the consequent decrease in salinity act as natural disturbance in the estuary, on an annual rate, contributing to the renewal of the population.
publishDate 2018
dc.date.none.fl_str_mv 2018
2019-05-24T14:16:18Z
2019-05-24T14:16:18Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv SANTANA, L. M. B. M.; ROCHA-BARREIRA, C. de A. Rainfall seasonal variation effect on the reproductive cycle of the bivalve phacoides pectinatus from semiarid coast of Brazil. Arquivos de ciências do Mar. Fortaleza, v. 51, n. 2, p. 84-97, 2018.
http://www.repositorio.ufc.br/handle/riufc/42008
identifier_str_mv SANTANA, L. M. B. M.; ROCHA-BARREIRA, C. de A. Rainfall seasonal variation effect on the reproductive cycle of the bivalve phacoides pectinatus from semiarid coast of Brazil. Arquivos de ciências do Mar. Fortaleza, v. 51, n. 2, p. 84-97, 2018.
url http://www.repositorio.ufc.br/handle/riufc/42008
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Instituto de Ciências do Mar
publisher.none.fl_str_mv Instituto de Ciências do Mar
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
_version_ 1813028730101039104

Registros relacionados