Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Oceanography |
Texto Completo: | https://www.revistas.usp.br/bjoce/article/view/117260 |
Resumo: | Brachyuran crabs are one of the most diverse taxa of crustaceans, occurring in almost all coastal habitats. Due to their high morphological diversification, the authors sought to ascertain the existence of morphological patterns related to the habitat of coastal brachyuran crabs. We analyzed 17 species from mangrove forests, rocky shores, sandy beaches and exclusively aquatic marine/estuarine ecosystems. A total of 16 linear measurements of males and 17 of females were obtained for each habitat. We were able to discriminate three functional groups of crab species, based on their habitat: 1. Complex Substrates, 2. Semiterrestrial, 3. Exclusively Aquatic. The species belonging to the Complex Substrates group had long ambulatory legs, as well as being heteroquely related to uneven terrain. Semiterrestrial species showed ambulatory legs of different sizes, allowing them to walk easily on the terrestrial terrain due to the long fourth ambulatory leg, and long eyestalks which are important for visual communication. Exclusively Aquatic species showed the largest carapace widths and the shortest eyestalks. The presence of different crab lineages in the environments analyzed allows us to demonstrate the clear evolutionary convergence, by which the crabs adapted to their specific habitat and environment. |
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Brazilian Journal of Oceanography |
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Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems Brachyuran crabs are one of the most diverse taxa of crustaceans, occurring in almost all coastal habitats. Due to their high morphological diversification, the authors sought to ascertain the existence of morphological patterns related to the habitat of coastal brachyuran crabs. We analyzed 17 species from mangrove forests, rocky shores, sandy beaches and exclusively aquatic marine/estuarine ecosystems. A total of 16 linear measurements of males and 17 of females were obtained for each habitat. We were able to discriminate three functional groups of crab species, based on their habitat: 1. Complex Substrates, 2. Semiterrestrial, 3. Exclusively Aquatic. The species belonging to the Complex Substrates group had long ambulatory legs, as well as being heteroquely related to uneven terrain. Semiterrestrial species showed ambulatory legs of different sizes, allowing them to walk easily on the terrestrial terrain due to the long fourth ambulatory leg, and long eyestalks which are important for visual communication. Exclusively Aquatic species showed the largest carapace widths and the shortest eyestalks. The presence of different crab lineages in the environments analyzed allows us to demonstrate the clear evolutionary convergence, by which the crabs adapted to their specific habitat and environment. Caranguejos braquiúros são um dos grupos mais diversificados de crustáceos, ocorrendo na maioria dos habitats costeiros. Devido à alta diversificação morfológica, procurou-se verificar a existência de padrões morfológicos relacionados ao habitat desses animais. Foram analisadas 17 espécies provenientes de manguezal, costão rochoso, praia de areia e ecossistema exclusivamente aquático marinho/estuarino. Em cada ambiente um total de 16 medidas lineares foi obtido para machos e 17 de fêmeas. Foram discriminados três grupos funcionais de espécies de caranguejos, baseado em seu habitat: 1. Substratos complexos, 2. Semiterrestre, 3. Exclusivamente aquático. As espécies pertencentes ao grupo Substratos complexos apresentaram pernas ambulatórias longas, bem como heteroquelia relacionada à vida em substratos irregulares. Espécies do grupo Semiterrestre apresentaram pernas ambulatórias de tamanhos distintos, o que lhes permite caminhar de maneira ágil sobre o ambiente terrestre graças à quarta perna ambulatória maior e aos pedúnculos oculares longos, importantes para a comunicação visual. Espécies do grupo Exclusivamente aquático apresentaram as maiores larguras de carapaça e pedúnculos oculares curtos. A presença de distintas linhagens de caranguejos nos ambientes analisados permitiu demonstrar uma clara convergência evolutiva, adaptando os caranguejos ao seu habitat e ambiente específico. Universidade de São Paulo. Instituto Oceanográfico2016-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/bjoce/article/view/11726010.1590/S1679-87592016109306402Brazilian Journal of Oceanography; v. 64 n. 2 (2016); 137-148Brazilian Journal of Oceanography; Vol. 64 No. 2 (2016); 137-148Brazilian Journal of Oceanography; Vol. 64 Núm. 2 (2016); 137-1481982-436X1679-8759reponame:Brazilian Journal of Oceanographyinstname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/bjoce/article/view/117260/114871Copyright (c) 2016 Brazilian Journal of Oceanographyinfo:eu-repo/semantics/openAccessMarochi, Murilo ZanettiMasunari, Setuko2016-07-05T12:06:18Zoai:revistas.usp.br:article/117260Revistahttps://www.revistas.usp.br/bjoce/indexPUBhttps://www.revistas.usp.br/bjoce/oaiio@usp.br||io@usp.br1982-436X1679-8759opendoar:2016-07-05T12:06:18Brazilian Journal of Oceanography - Universidade de São Paulo (USP)false |
dc.title.none.fl_str_mv |
Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems |
title |
Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems |
spellingShingle |
Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems Marochi, Murilo Zanetti |
title_short |
Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems |
title_full |
Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems |
title_fullStr |
Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems |
title_full_unstemmed |
Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems |
title_sort |
Ecomorphology of crabs and swimming crabs (Crustacea DecapodaBrachyura) from coastal ecosystems |
author |
Marochi, Murilo Zanetti |
author_facet |
Marochi, Murilo Zanetti Masunari, Setuko |
author_role |
author |
author2 |
Masunari, Setuko |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Marochi, Murilo Zanetti Masunari, Setuko |
description |
Brachyuran crabs are one of the most diverse taxa of crustaceans, occurring in almost all coastal habitats. Due to their high morphological diversification, the authors sought to ascertain the existence of morphological patterns related to the habitat of coastal brachyuran crabs. We analyzed 17 species from mangrove forests, rocky shores, sandy beaches and exclusively aquatic marine/estuarine ecosystems. A total of 16 linear measurements of males and 17 of females were obtained for each habitat. We were able to discriminate three functional groups of crab species, based on their habitat: 1. Complex Substrates, 2. Semiterrestrial, 3. Exclusively Aquatic. The species belonging to the Complex Substrates group had long ambulatory legs, as well as being heteroquely related to uneven terrain. Semiterrestrial species showed ambulatory legs of different sizes, allowing them to walk easily on the terrestrial terrain due to the long fourth ambulatory leg, and long eyestalks which are important for visual communication. Exclusively Aquatic species showed the largest carapace widths and the shortest eyestalks. The presence of different crab lineages in the environments analyzed allows us to demonstrate the clear evolutionary convergence, by which the crabs adapted to their specific habitat and environment. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.revistas.usp.br/bjoce/article/view/117260 10.1590/S1679-87592016109306402 |
url |
https://www.revistas.usp.br/bjoce/article/view/117260 |
identifier_str_mv |
10.1590/S1679-87592016109306402 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://www.revistas.usp.br/bjoce/article/view/117260/114871 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Brazilian Journal of Oceanography info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Brazilian Journal of Oceanography |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto Oceanográfico |
publisher.none.fl_str_mv |
Universidade de São Paulo. Instituto Oceanográfico |
dc.source.none.fl_str_mv |
Brazilian Journal of Oceanography; v. 64 n. 2 (2016); 137-148 Brazilian Journal of Oceanography; Vol. 64 No. 2 (2016); 137-148 Brazilian Journal of Oceanography; Vol. 64 Núm. 2 (2016); 137-148 1982-436X 1679-8759 reponame:Brazilian Journal of Oceanography instname:Universidade de São Paulo (USP) instacron:USP |
instname_str |
Universidade de São Paulo (USP) |
instacron_str |
USP |
institution |
USP |
reponame_str |
Brazilian Journal of Oceanography |
collection |
Brazilian Journal of Oceanography |
repository.name.fl_str_mv |
Brazilian Journal of Oceanography - Universidade de São Paulo (USP) |
repository.mail.fl_str_mv |
io@usp.br||io@usp.br |
_version_ |
1787713798281363456 |