Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae)
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1163/15707563-bja10082 http://hdl.handle.net/11449/241292 |
Resumo: | Many animal groups can develop weapons that originate from specialized modifications in different body regions. Decapods are a classic example of organisms that develop these weapons. In this group, we can find specific appendages modified to claws that are used during agonistic conflicts, as is the case between dominant and submissive male morphotypes in freshwater prawns. Our study aimed to analyze the shape, size, and morphological integration of claw components (propodus and dactyl) in male morphotypes of two freshwater prawn congeners (Macrobrachium amazonicum and M. brasiliense). Claws of the prawns were photographed and marked with landmarks and semilandmarks for the acquisition of shape variables. The shape of the propodus and dactyl was statistically different between almost all morphotypes of the two species. The size of structures differed statistically between all morphotypes. The claws of almost all morphotypes showed a high degree of morphological integration; however, statistical differences were observed only between the morphotypes of M. brasiliense. The variation in the shape and degree of morphological integration of the claws between the morphotypes of M. amazonicum was less evident when compared to the morphotypes of M. brasiliense, which may be related to distinct patterns in the development of chelipeds of each species, that is, homochely and heterochely, respectively. Thus, the exaggerated development of a cheliped (heterochely) can cause greater variation in the shape of this structure, also influencing the degree of morphological integration between its components, as evidenced in this study. |
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spelling |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae)Many animal groups can develop weapons that originate from specialized modifications in different body regions. Decapods are a classic example of organisms that develop these weapons. In this group, we can find specific appendages modified to claws that are used during agonistic conflicts, as is the case between dominant and submissive male morphotypes in freshwater prawns. Our study aimed to analyze the shape, size, and morphological integration of claw components (propodus and dactyl) in male morphotypes of two freshwater prawn congeners (Macrobrachium amazonicum and M. brasiliense). Claws of the prawns were photographed and marked with landmarks and semilandmarks for the acquisition of shape variables. The shape of the propodus and dactyl was statistically different between almost all morphotypes of the two species. The size of structures differed statistically between all morphotypes. The claws of almost all morphotypes showed a high degree of morphological integration; however, statistical differences were observed only between the morphotypes of M. brasiliense. The variation in the shape and degree of morphological integration of the claws between the morphotypes of M. amazonicum was less evident when compared to the morphotypes of M. brasiliense, which may be related to distinct patterns in the development of chelipeds of each species, that is, homochely and heterochely, respectively. Thus, the exaggerated development of a cheliped (heterochely) can cause greater variation in the shape of this structure, also influencing the degree of morphological integration between its components, as evidenced in this study.Laboratory of Biology of Marine and Freshwater Shrimps (LABCAM) Department of Biological Sciences Faculty of Sciences São Paulo State University (UNESP), Av. Engenheiro Luiz Edmundo Carrijo Coube 14-01, São PauloLaboratory of Bioecology and Crustacean Systematics (LBSC) Department of Biology Faculty of Philosophy Science and Letters at Ribeirão Preto (FFCLRP) University of São Paulo (USP), Av. Bandeirantes 3900, São PauloLaboratory of Biology of Marine and Freshwater Shrimps (LABCAM) Department of Biological Sciences Faculty of Sciences São Paulo State University (UNESP), Av. Engenheiro Luiz Edmundo Carrijo Coube 14-01, São PauloUniversidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Nogueira, Caio Santos [UNESP]Pantaleão, João Alberto FarinelliCosta, Rogerio Caetano [UNESP]2023-03-01T20:55:27Z2023-03-01T20:55:27Z2022-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1163/15707563-bja10082Animal Biology.1570-75631570-7555http://hdl.handle.net/11449/24129210.1163/15707563-bja100822-s2.0-85133654890Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnimal Biologyinfo:eu-repo/semantics/openAccess2023-03-01T20:55:27Zoai:repositorio.unesp.br:11449/241292Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:21:48.683397Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae) |
title |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae) |
spellingShingle |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae) Nogueira, Caio Santos [UNESP] |
title_short |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae) |
title_full |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae) |
title_fullStr |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae) |
title_full_unstemmed |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae) |
title_sort |
Weapon shape variation of male morphotypes in two freshwater prawn species genus Macrobrachium (Decapoda: Palaemonidae) |
author |
Nogueira, Caio Santos [UNESP] |
author_facet |
Nogueira, Caio Santos [UNESP] Pantaleão, João Alberto Farinelli Costa, Rogerio Caetano [UNESP] |
author_role |
author |
author2 |
Pantaleão, João Alberto Farinelli Costa, Rogerio Caetano [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Nogueira, Caio Santos [UNESP] Pantaleão, João Alberto Farinelli Costa, Rogerio Caetano [UNESP] |
description |
Many animal groups can develop weapons that originate from specialized modifications in different body regions. Decapods are a classic example of organisms that develop these weapons. In this group, we can find specific appendages modified to claws that are used during agonistic conflicts, as is the case between dominant and submissive male morphotypes in freshwater prawns. Our study aimed to analyze the shape, size, and morphological integration of claw components (propodus and dactyl) in male morphotypes of two freshwater prawn congeners (Macrobrachium amazonicum and M. brasiliense). Claws of the prawns were photographed and marked with landmarks and semilandmarks for the acquisition of shape variables. The shape of the propodus and dactyl was statistically different between almost all morphotypes of the two species. The size of structures differed statistically between all morphotypes. The claws of almost all morphotypes showed a high degree of morphological integration; however, statistical differences were observed only between the morphotypes of M. brasiliense. The variation in the shape and degree of morphological integration of the claws between the morphotypes of M. amazonicum was less evident when compared to the morphotypes of M. brasiliense, which may be related to distinct patterns in the development of chelipeds of each species, that is, homochely and heterochely, respectively. Thus, the exaggerated development of a cheliped (heterochely) can cause greater variation in the shape of this structure, also influencing the degree of morphological integration between its components, as evidenced in this study. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 2023-03-01T20:55:27Z 2023-03-01T20:55:27Z |
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 |
http://dx.doi.org/10.1163/15707563-bja10082 Animal Biology. 1570-7563 1570-7555 http://hdl.handle.net/11449/241292 10.1163/15707563-bja10082 2-s2.0-85133654890 |
url |
http://dx.doi.org/10.1163/15707563-bja10082 http://hdl.handle.net/11449/241292 |
identifier_str_mv |
Animal Biology. 1570-7563 1570-7555 10.1163/15707563-bja10082 2-s2.0-85133654890 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Animal Biology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129510370967552 |