Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00265-021-03031-2 http://hdl.handle.net/11449/229089 |
Resumo: | Abstract: Most burrowing shrimps (infraorder Axiidea and Gebiidea) are characterized by solitary habits, which led many of these species to evolve a remarkable sexual dimorphism both in body size and chelipeds because of sexual selection. Given that monogamous species are known to live in heterosexual pairs and exhibit a low degree of sexual dimorphism, it is expected that burrowing shrimps are not monogamous. We tested this hypothesis using the burrowing shrimp Lepidophthalmus bocourti as a model. Against expectations, shrimps were found living not only individually but also in homosexual and heterosexual pairs and trios within their respective burrows. The social structure in L. bocourti seemed to be an ontogenetically defined strategy, since most solitary individuals were juveniles of both sexes, while the heterosexual combinations were composed by adult shrimps. Sex distribution of pairs and trios suggested that female-female and male-female-female associations might be stable over time. Only 7% of the inhabited burrows were occupied by a heterosexual pair, and ovigerous females were found dwelling either in solitary or in heterosexual combinations, indicating that this species is not monogamous. Most of the male-female associations occurring both in pairs and trios were dominated by females larger than males. We observed sexual dimorphism in the size of the major cheliped, being larger in males than in females. Ontogenetic pattern of burrow occupation allied to considerable sexual dimorphism argue in favour that L. bocourti is not monogamous and suggest that the major cheliped might have an important role during the male-male competition for receptive females. Significance statement: Burrowing shrimps (Axiidea and Gebiidea) are characterized by their solitary habits and by marked sexual dimorphism both in body size and chelipeds. The way these shrimps occupy their burrows and how common sexual dimorphism occurs remains unknown for most species. This is particularly important since the predominance of certain mating system (i.e. monogamous versus polygamous) can be inferred from the social structure and morphological differences of characters among the sexes of a species. We described the burrow use pattern and sexual dimorphism of the burrowing shrimp Lepidophthalmus bocourti to infer the mating system in this species. L. bocourti showed a complex social structure composed of both solitary shrimps and homosexual and heterosexual pairs and trios of shrimps. This burrow use pattern is allied with sexual dimorphism both in body (when it came to male-female associations) and in cheliped size. |
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Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphismAllometric growthAxiideaBurrow occupationCosta RicaCrustaceaMating systemsAbstract: Most burrowing shrimps (infraorder Axiidea and Gebiidea) are characterized by solitary habits, which led many of these species to evolve a remarkable sexual dimorphism both in body size and chelipeds because of sexual selection. Given that monogamous species are known to live in heterosexual pairs and exhibit a low degree of sexual dimorphism, it is expected that burrowing shrimps are not monogamous. We tested this hypothesis using the burrowing shrimp Lepidophthalmus bocourti as a model. Against expectations, shrimps were found living not only individually but also in homosexual and heterosexual pairs and trios within their respective burrows. The social structure in L. bocourti seemed to be an ontogenetically defined strategy, since most solitary individuals were juveniles of both sexes, while the heterosexual combinations were composed by adult shrimps. Sex distribution of pairs and trios suggested that female-female and male-female-female associations might be stable over time. Only 7% of the inhabited burrows were occupied by a heterosexual pair, and ovigerous females were found dwelling either in solitary or in heterosexual combinations, indicating that this species is not monogamous. Most of the male-female associations occurring both in pairs and trios were dominated by females larger than males. We observed sexual dimorphism in the size of the major cheliped, being larger in males than in females. Ontogenetic pattern of burrow occupation allied to considerable sexual dimorphism argue in favour that L. bocourti is not monogamous and suggest that the major cheliped might have an important role during the male-male competition for receptive females. Significance statement: Burrowing shrimps (Axiidea and Gebiidea) are characterized by their solitary habits and by marked sexual dimorphism both in body size and chelipeds. The way these shrimps occupy their burrows and how common sexual dimorphism occurs remains unknown for most species. This is particularly important since the predominance of certain mating system (i.e. monogamous versus polygamous) can be inferred from the social structure and morphological differences of characters among the sexes of a species. We described the burrow use pattern and sexual dimorphism of the burrowing shrimp Lepidophthalmus bocourti to infer the mating system in this species. L. bocourti showed a complex social structure composed of both solitary shrimps and homosexual and heterosexual pairs and trios of shrimps. This burrow use pattern is allied with sexual dimorphism both in body (when it came to male-female associations) and in cheliped size.Fondo Nacional de Desarrollo Científico y TecnológicoFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Facultad de Ciencias Centro de Estudios Marinos y Limnológicos Universidad de Tarapacá (UTA), Av. General VelásquezCentro de Investigación en Nutrición Animal (CINA) Ciudad de la Investigación Universidad de Costa Rica (UCR)Grupo de Pesquisa em Biologia de Crustáceos (CRUSTA) Instituto de Biociências Campus do Litoral Paulista Universidade Estadual Paulista (UNESP) Praça Infante Dom Henrique s/n° Parque Bitarú CEPCentro de Ciências Naturais e Humanas Universidade Federal Do ABC (UFABC)Centro de Estudios Avanzados en Zonas Áridas (CEAZA), Av. Bernardo Ossandón 877Departamento de Biología Marina Facultad de Ciencias del Mar Universidad Católica del NorteDepartamento de Biología Universidad de La SerenaGrupo de Pesquisa em Biologia de Crustáceos (CRUSTA) Instituto de Biociências Campus do Litoral Paulista Universidade Estadual Paulista (UNESP) Praça Infante Dom Henrique s/n° Parque Bitarú CEPFondo Nacional de Desarrollo Científico y Tecnológico: 1200843FAPESP: 2019/01934-3FAPESP: 2019/16581-9Universidad de Tarapacá (UTA)Universidad de Costa Rica (UCR)Universidade Estadual Paulista (UNESP)Universidade Federal do ABC (UFABC)Centro de Estudios Avanzados en Zonas Áridas (CEAZA)Universidad Católica del NorteUniversidad de La SerenaHernáez, PatricioVillegas-Castro, ErickJoão, Marcio Camargo Araujo [UNESP]Duarte, Rafael CamposRivadeneira, Marcelo M.2022-04-29T08:30:19Z2022-04-29T08:30:19Z2021-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s00265-021-03031-2Behavioral Ecology and Sociobiology, v. 75, n. 6, 2021.1432-07620340-5443http://hdl.handle.net/11449/22908910.1007/s00265-021-03031-22-s2.0-85109210078Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBehavioral Ecology and Sociobiologyinfo:eu-repo/semantics/openAccess2022-04-29T08:30:19Zoai:repositorio.unesp.br:11449/229089Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:17:44.829396Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism |
title |
Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism |
spellingShingle |
Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism Hernáez, Patricio Allometric growth Axiidea Burrow occupation Costa Rica Crustacea Mating systems |
title_short |
Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism |
title_full |
Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism |
title_fullStr |
Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism |
title_full_unstemmed |
Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism |
title_sort |
Inferring the mating system in the burrowing shrimp Lepidophthalmus bocourti (Decapoda, Axiidea, Callichiridae) from the social structure and sexual dimorphism |
author |
Hernáez, Patricio |
author_facet |
Hernáez, Patricio Villegas-Castro, Erick João, Marcio Camargo Araujo [UNESP] Duarte, Rafael Campos Rivadeneira, Marcelo M. |
author_role |
author |
author2 |
Villegas-Castro, Erick João, Marcio Camargo Araujo [UNESP] Duarte, Rafael Campos Rivadeneira, Marcelo M. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidad de Tarapacá (UTA) Universidad de Costa Rica (UCR) Universidade Estadual Paulista (UNESP) Universidade Federal do ABC (UFABC) Centro de Estudios Avanzados en Zonas Áridas (CEAZA) Universidad Católica del Norte Universidad de La Serena |
dc.contributor.author.fl_str_mv |
Hernáez, Patricio Villegas-Castro, Erick João, Marcio Camargo Araujo [UNESP] Duarte, Rafael Campos Rivadeneira, Marcelo M. |
dc.subject.por.fl_str_mv |
Allometric growth Axiidea Burrow occupation Costa Rica Crustacea Mating systems |
topic |
Allometric growth Axiidea Burrow occupation Costa Rica Crustacea Mating systems |
description |
Abstract: Most burrowing shrimps (infraorder Axiidea and Gebiidea) are characterized by solitary habits, which led many of these species to evolve a remarkable sexual dimorphism both in body size and chelipeds because of sexual selection. Given that monogamous species are known to live in heterosexual pairs and exhibit a low degree of sexual dimorphism, it is expected that burrowing shrimps are not monogamous. We tested this hypothesis using the burrowing shrimp Lepidophthalmus bocourti as a model. Against expectations, shrimps were found living not only individually but also in homosexual and heterosexual pairs and trios within their respective burrows. The social structure in L. bocourti seemed to be an ontogenetically defined strategy, since most solitary individuals were juveniles of both sexes, while the heterosexual combinations were composed by adult shrimps. Sex distribution of pairs and trios suggested that female-female and male-female-female associations might be stable over time. Only 7% of the inhabited burrows were occupied by a heterosexual pair, and ovigerous females were found dwelling either in solitary or in heterosexual combinations, indicating that this species is not monogamous. Most of the male-female associations occurring both in pairs and trios were dominated by females larger than males. We observed sexual dimorphism in the size of the major cheliped, being larger in males than in females. Ontogenetic pattern of burrow occupation allied to considerable sexual dimorphism argue in favour that L. bocourti is not monogamous and suggest that the major cheliped might have an important role during the male-male competition for receptive females. Significance statement: Burrowing shrimps (Axiidea and Gebiidea) are characterized by their solitary habits and by marked sexual dimorphism both in body size and chelipeds. The way these shrimps occupy their burrows and how common sexual dimorphism occurs remains unknown for most species. This is particularly important since the predominance of certain mating system (i.e. monogamous versus polygamous) can be inferred from the social structure and morphological differences of characters among the sexes of a species. We described the burrow use pattern and sexual dimorphism of the burrowing shrimp Lepidophthalmus bocourti to infer the mating system in this species. L. bocourti showed a complex social structure composed of both solitary shrimps and homosexual and heterosexual pairs and trios of shrimps. This burrow use pattern is allied with sexual dimorphism both in body (when it came to male-female associations) and in cheliped size. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-01 2022-04-29T08:30:19Z 2022-04-29T08:30:19Z |
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/10.1007/s00265-021-03031-2 Behavioral Ecology and Sociobiology, v. 75, n. 6, 2021. 1432-0762 0340-5443 http://hdl.handle.net/11449/229089 10.1007/s00265-021-03031-2 2-s2.0-85109210078 |
url |
http://dx.doi.org/10.1007/s00265-021-03031-2 http://hdl.handle.net/11449/229089 |
identifier_str_mv |
Behavioral Ecology and Sociobiology, v. 75, n. 6, 2021. 1432-0762 0340-5443 10.1007/s00265-021-03031-2 2-s2.0-85109210078 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Behavioral Ecology and Sociobiology |
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_ |
1808128630419619840 |