Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil

Detalhes bibliográficos
Autor(a) principal: Bezerra, Luis Ernesto Arruda
Data de Publicação: 2007
Outros Autores: Matthews-Cascon, Helena
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/60161
Resumo: Population and reproductive biology ofUca thayeriRathbun, 1900 were studied for the firsttime in a tropical mangrove. Absolute density, sex ratio, population structure, handedness,breeding season and fecundity were investigated. Seven transects were delimited in a man-grove area of the Pacoti River, Northeast of Brazil (3 4300200S/38 3203500W). On each tran-sect, ten 0.25 m2squares were sampled on a monthly basis during low tide periods fromSeptember 2003 to August 2004. A total of 483 crabs were obtained, of which 250 weremales, 219 non-ovigerous females, and 14 ovigerous females. TheU. thayeripopulation pre-sented bi-modal size frequency distribution, with males and non-ovigerous females notdiffering significantly size-wise. Ovigerous females were larger than males and non-ovig-erous females. The overall sex ratio (1:1.07) did not differ significantly from the expected1:1 proportion. The major cheliped was the right one in 50% of the males. The observeddensity was of 8.5 individuals/m2, with the specimens being found mostly in shaded areas.Ovigerous females were found in 5 months of the year, coinciding with the rainy season,suggesting that the population ofU. thayeripresents seasonal reproductive events. Juvenilecrabs were more abundant during the dry period, while larger crabs were found mainlyduring the rainy period. The fecundity of the studied population was much smaller thanthat of subtropical populations of this species. The regression analysis shows that thenumber of eggs increases linearly with the increase of carapace width.
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spelling Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast BrazilPopulation and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast BrazilPopulaçãoReproduçãoDistribuição -sexoPopulation and reproductive biology ofUca thayeriRathbun, 1900 were studied for the firsttime in a tropical mangrove. Absolute density, sex ratio, population structure, handedness,breeding season and fecundity were investigated. Seven transects were delimited in a man-grove area of the Pacoti River, Northeast of Brazil (3 4300200S/38 3203500W). On each tran-sect, ten 0.25 m2squares were sampled on a monthly basis during low tide periods fromSeptember 2003 to August 2004. A total of 483 crabs were obtained, of which 250 weremales, 219 non-ovigerous females, and 14 ovigerous females. TheU. thayeripopulation pre-sented bi-modal size frequency distribution, with males and non-ovigerous females notdiffering significantly size-wise. Ovigerous females were larger than males and non-ovig-erous females. The overall sex ratio (1:1.07) did not differ significantly from the expected1:1 proportion. The major cheliped was the right one in 50% of the males. The observeddensity was of 8.5 individuals/m2, with the specimens being found mostly in shaded areas.Ovigerous females were found in 5 months of the year, coinciding with the rainy season,suggesting that the population ofU. thayeripresents seasonal reproductive events. Juvenilecrabs were more abundant during the dry period, while larger crabs were found mainlyduring the rainy period. The fecundity of the studied population was much smaller thanthat of subtropical populations of this species. The regression analysis shows that thenumber of eggs increases linearly with the increase of carapace width.Acta Oecologica-International Journal Of Ecology2021-08-30T15:37:03Z2021-08-30T15:37:03Z2007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfBEZERRA, Luis Ernesto Arruda Bezerra; MATTHEWS-CASCON, Helena. Population and reproductive biology of the fiddler crab Uca thayeri (Crustacea: Ocypodidae) in a tropical mangrove from Northeast Brazil. Acta Oecologica-International Journal Of Ecology, France, v. 31, p. 251-258, 2007.1146-609Xhttp://www.repositorio.ufc.br/handle/riufc/60161Bezerra, Luis Ernesto ArrudaMatthews-Cascon, Helenaengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2023-01-17T14:33:13Zoai:repositorio.ufc.br:riufc/60161Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:16:17.276843Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
title Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
spellingShingle Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
Bezerra, Luis Ernesto Arruda
População
Reprodução
Distribuição -sexo
title_short Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
title_full Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
title_fullStr Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
title_full_unstemmed Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
title_sort Population and reproductive biology of the fiddler crabUcathayeriRathbun, 1900 (Crustacea: Ocypodidae) in a tropicalmangrove from Northeast Brazil
author Bezerra, Luis Ernesto Arruda
author_facet Bezerra, Luis Ernesto Arruda
Matthews-Cascon, Helena
author_role author
author2 Matthews-Cascon, Helena
author2_role author
dc.contributor.author.fl_str_mv Bezerra, Luis Ernesto Arruda
Matthews-Cascon, Helena
dc.subject.por.fl_str_mv População
Reprodução
Distribuição -sexo
topic População
Reprodução
Distribuição -sexo
description Population and reproductive biology ofUca thayeriRathbun, 1900 were studied for the firsttime in a tropical mangrove. Absolute density, sex ratio, population structure, handedness,breeding season and fecundity were investigated. Seven transects were delimited in a man-grove area of the Pacoti River, Northeast of Brazil (3 4300200S/38 3203500W). On each tran-sect, ten 0.25 m2squares were sampled on a monthly basis during low tide periods fromSeptember 2003 to August 2004. A total of 483 crabs were obtained, of which 250 weremales, 219 non-ovigerous females, and 14 ovigerous females. TheU. thayeripopulation pre-sented bi-modal size frequency distribution, with males and non-ovigerous females notdiffering significantly size-wise. Ovigerous females were larger than males and non-ovig-erous females. The overall sex ratio (1:1.07) did not differ significantly from the expected1:1 proportion. The major cheliped was the right one in 50% of the males. The observeddensity was of 8.5 individuals/m2, with the specimens being found mostly in shaded areas.Ovigerous females were found in 5 months of the year, coinciding with the rainy season,suggesting that the population ofU. thayeripresents seasonal reproductive events. Juvenilecrabs were more abundant during the dry period, while larger crabs were found mainlyduring the rainy period. The fecundity of the studied population was much smaller thanthat of subtropical populations of this species. The regression analysis shows that thenumber of eggs increases linearly with the increase of carapace width.
publishDate 2007
dc.date.none.fl_str_mv 2007
2021-08-30T15:37:03Z
2021-08-30T15:37:03Z
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 BEZERRA, Luis Ernesto Arruda Bezerra; MATTHEWS-CASCON, Helena. Population and reproductive biology of the fiddler crab Uca thayeri (Crustacea: Ocypodidae) in a tropical mangrove from Northeast Brazil. Acta Oecologica-International Journal Of Ecology, France, v. 31, p. 251-258, 2007.
1146-609X
http://www.repositorio.ufc.br/handle/riufc/60161
identifier_str_mv BEZERRA, Luis Ernesto Arruda Bezerra; MATTHEWS-CASCON, Helena. Population and reproductive biology of the fiddler crab Uca thayeri (Crustacea: Ocypodidae) in a tropical mangrove from Northeast Brazil. Acta Oecologica-International Journal Of Ecology, France, v. 31, p. 251-258, 2007.
1146-609X
url http://www.repositorio.ufc.br/handle/riufc/60161
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 Acta Oecologica-International Journal Of Ecology
publisher.none.fl_str_mv Acta Oecologica-International Journal Of Ecology
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
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