Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da Universidade Federal do Ceará (UFC) |
Texto Completo: | http://www.repositorio.ufc.br/handle/riufc/63360 |
Resumo: | Biología poblacional del cangrejo de manglar Ucides cordatus (Decapoda: Ucididae) en un estuario tropical semiárido. The mangrove crab Ucides cordatus is an important resource of estuarine regions along the Brazilian coast. U. cordatus is distributed from Florida, USA, to the coast of Santa Catarina, Brazil. The species plays an important role in processing leaf litter in the mangroves, which optimizes the processes of energy transfer and nutrient cycling, and is considered a keystone species in the ecosystem. Population declines have been reported in different parts of the Brazilian coast. In the present study we evaluated aspects of the population structure, sex ratio and size at morphological sexual maturity. We analyzed 977 specimens collected monthly over 24 months (2010-2012), in a mangrove of the Jaguaribe River, in the municipality of Aracati on the East coast of Ceará state, Northeastern Brazil. The study area has a mild semiarid tropical climate, with mean temperatures between 26 and 28oC. The area is located within the eco-region of the semiarid Northeast coast, where mangroves occur in small areas and estuaries are affected by mesomareal regimes. The population structure was evaluated by the frequency distribution of size classes in each month, and the overall sex ratio was analyzed using the chi-square test. Size at morphological sexual maturity was estimated based on the allometry of the cheliped of the males and the abdomen width of the females, using the program REGRANS. The size-frequency distribution was unimodal in both sexes. The overall sex ratio (M: F) (1:0.6) was significantly different from 1:1. Analysis of the sex ratio by size class showed that the proportion of males increased significantly from size class 55-60mm upward, and this pattern persisted in the larger size classes. In the smaller size classes the sex ratio did not differ from 1:1. The size at morphological sexual maturity was estimated at a carapace width (CW) of 52mm and 45mm for males and females, respectively. Analysis of the population parameters indicated that the population of U. cordatus in the Jaguaribe River mangrove is stable. However, constant monitoring of the population is required to detect any changes in the population attributes that may affect this stability. Rev. Biol. Trop. 61 (4): 1721-1735. Epub 2013 December 01. |
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Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern BrazilAllometryPopulation structureFishery managementSex ratioSize at sexual maturityBiología poblacional del cangrejo de manglar Ucides cordatus (Decapoda: Ucididae) en un estuario tropical semiárido. The mangrove crab Ucides cordatus is an important resource of estuarine regions along the Brazilian coast. U. cordatus is distributed from Florida, USA, to the coast of Santa Catarina, Brazil. The species plays an important role in processing leaf litter in the mangroves, which optimizes the processes of energy transfer and nutrient cycling, and is considered a keystone species in the ecosystem. Population declines have been reported in different parts of the Brazilian coast. In the present study we evaluated aspects of the population structure, sex ratio and size at morphological sexual maturity. We analyzed 977 specimens collected monthly over 24 months (2010-2012), in a mangrove of the Jaguaribe River, in the municipality of Aracati on the East coast of Ceará state, Northeastern Brazil. The study area has a mild semiarid tropical climate, with mean temperatures between 26 and 28oC. The area is located within the eco-region of the semiarid Northeast coast, where mangroves occur in small areas and estuaries are affected by mesomareal regimes. The population structure was evaluated by the frequency distribution of size classes in each month, and the overall sex ratio was analyzed using the chi-square test. Size at morphological sexual maturity was estimated based on the allometry of the cheliped of the males and the abdomen width of the females, using the program REGRANS. The size-frequency distribution was unimodal in both sexes. The overall sex ratio (M: F) (1:0.6) was significantly different from 1:1. Analysis of the sex ratio by size class showed that the proportion of males increased significantly from size class 55-60mm upward, and this pattern persisted in the larger size classes. In the smaller size classes the sex ratio did not differ from 1:1. The size at morphological sexual maturity was estimated at a carapace width (CW) of 52mm and 45mm for males and females, respectively. Analysis of the population parameters indicated that the population of U. cordatus in the Jaguaribe River mangrove is stable. However, constant monitoring of the population is required to detect any changes in the population attributes that may affect this stability. Rev. Biol. Trop. 61 (4): 1721-1735. Epub 2013 December 01.Revista de Biologia Tropical2022-01-06T13:57:45Z2022-01-06T13:57:45Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfLEITE, Marcos de Miranda Leão; REZENDE, Carla Ferreira; SILVA, José Roberto Feitosa. Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil. Revista de Biologia Tropical, [s. l.], v. 61, n. 4, p. 1721-1735, 2013.http://www.repositorio.ufc.br/handle/riufc/63360Leite, Marcos de Miranda LeãoRezende, Carla FerreiraSilva, José Roberto Feitosainfo:eu-repo/semantics/openAccessporreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFC2023-10-10T19:36:36Zoai:repositorio.ufc.br:riufc/63360Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:38:36.713029Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false |
dc.title.none.fl_str_mv |
Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil |
title |
Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil |
spellingShingle |
Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil Leite, Marcos de Miranda Leão Allometry Population structure Fishery management Sex ratio Size at sexual maturity |
title_short |
Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil |
title_full |
Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil |
title_fullStr |
Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil |
title_full_unstemmed |
Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil |
title_sort |
Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil |
author |
Leite, Marcos de Miranda Leão |
author_facet |
Leite, Marcos de Miranda Leão Rezende, Carla Ferreira Silva, José Roberto Feitosa |
author_role |
author |
author2 |
Rezende, Carla Ferreira Silva, José Roberto Feitosa |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Leite, Marcos de Miranda Leão Rezende, Carla Ferreira Silva, José Roberto Feitosa |
dc.subject.por.fl_str_mv |
Allometry Population structure Fishery management Sex ratio Size at sexual maturity |
topic |
Allometry Population structure Fishery management Sex ratio Size at sexual maturity |
description |
Biología poblacional del cangrejo de manglar Ucides cordatus (Decapoda: Ucididae) en un estuario tropical semiárido. The mangrove crab Ucides cordatus is an important resource of estuarine regions along the Brazilian coast. U. cordatus is distributed from Florida, USA, to the coast of Santa Catarina, Brazil. The species plays an important role in processing leaf litter in the mangroves, which optimizes the processes of energy transfer and nutrient cycling, and is considered a keystone species in the ecosystem. Population declines have been reported in different parts of the Brazilian coast. In the present study we evaluated aspects of the population structure, sex ratio and size at morphological sexual maturity. We analyzed 977 specimens collected monthly over 24 months (2010-2012), in a mangrove of the Jaguaribe River, in the municipality of Aracati on the East coast of Ceará state, Northeastern Brazil. The study area has a mild semiarid tropical climate, with mean temperatures between 26 and 28oC. The area is located within the eco-region of the semiarid Northeast coast, where mangroves occur in small areas and estuaries are affected by mesomareal regimes. The population structure was evaluated by the frequency distribution of size classes in each month, and the overall sex ratio was analyzed using the chi-square test. Size at morphological sexual maturity was estimated based on the allometry of the cheliped of the males and the abdomen width of the females, using the program REGRANS. The size-frequency distribution was unimodal in both sexes. The overall sex ratio (M: F) (1:0.6) was significantly different from 1:1. Analysis of the sex ratio by size class showed that the proportion of males increased significantly from size class 55-60mm upward, and this pattern persisted in the larger size classes. In the smaller size classes the sex ratio did not differ from 1:1. The size at morphological sexual maturity was estimated at a carapace width (CW) of 52mm and 45mm for males and females, respectively. Analysis of the population parameters indicated that the population of U. cordatus in the Jaguaribe River mangrove is stable. However, constant monitoring of the population is required to detect any changes in the population attributes that may affect this stability. Rev. Biol. Trop. 61 (4): 1721-1735. Epub 2013 December 01. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013 2022-01-06T13:57:45Z 2022-01-06T13:57:45Z |
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 |
LEITE, Marcos de Miranda Leão; REZENDE, Carla Ferreira; SILVA, José Roberto Feitosa. Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil. Revista de Biologia Tropical, [s. l.], v. 61, n. 4, p. 1721-1735, 2013. http://www.repositorio.ufc.br/handle/riufc/63360 |
identifier_str_mv |
LEITE, Marcos de Miranda Leão; REZENDE, Carla Ferreira; SILVA, José Roberto Feitosa. Population biology of the mangrove crab Ucides cordatus (Decapoda: Ucididae) in an estuary from semiarid Northeastern Brazil. Revista de Biologia Tropical, [s. l.], v. 61, n. 4, p. 1721-1735, 2013. |
url |
http://www.repositorio.ufc.br/handle/riufc/63360 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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 |
Revista de Biologia Tropical |
publisher.none.fl_str_mv |
Revista de Biologia Tropical |
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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1813028888998051840 |