Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae)
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/10.1080/07924259.2021.1980442 http://hdl.handle.net/11449/222579 |
Resumo: | This study tested the hypothesis of the existence of male morphotypes in Macrobrachium acanthurus, a species of recognized economic potential, with an extensive geographic distribution. The collections occurred on eight occasions between July 2016 and March 2018 at seven points along the Jequitinhonha River, state of Bahia, Brazil. The identification of male morphotypes occurred through morphological and morphometric analyses. In total, 297 males were collected. The carapace length (CL) ranged from 4.6 to 41.81 mm, with a size at onset of maturity estimated at 11.85 mm. The morphological and morphometric analyses confirmed our hypothesis with the distinction of three morphotypes: M1, M2, and M3. M1 was characterized by males with chelipeds similar to those of females: relatively small, with tiny spines and without pubescence in the dactylus; M2 males had chelipeds larger than those of M1, as well as larger and denser spines, with little pubescence in the dactylus; and M3 individuals had considerably more robust chelipeds, very prominent spines and a thick layer of pubescence when compared to those of the previous morphotype. Our results suggest a social hierarchy where M1 is subordinate, M2 subdominant, and M3 the dominant morphotype. However, behavioural studies are needed to confirm this. |
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Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae)alternative mating tacticsdominance hierarchiesheterogeneous individual growthKey-words: male polymorphismsexual selectionThis study tested the hypothesis of the existence of male morphotypes in Macrobrachium acanthurus, a species of recognized economic potential, with an extensive geographic distribution. The collections occurred on eight occasions between July 2016 and March 2018 at seven points along the Jequitinhonha River, state of Bahia, Brazil. The identification of male morphotypes occurred through morphological and morphometric analyses. In total, 297 males were collected. The carapace length (CL) ranged from 4.6 to 41.81 mm, with a size at onset of maturity estimated at 11.85 mm. The morphological and morphometric analyses confirmed our hypothesis with the distinction of three morphotypes: M1, M2, and M3. M1 was characterized by males with chelipeds similar to those of females: relatively small, with tiny spines and without pubescence in the dactylus; M2 males had chelipeds larger than those of M1, as well as larger and denser spines, with little pubescence in the dactylus; and M3 individuals had considerably more robust chelipeds, very prominent spines and a thick layer of pubescence when compared to those of the previous morphotype. Our results suggest a social hierarchy where M1 is subordinate, M2 subdominant, and M3 the dominant morphotype. However, behavioural studies are needed to confirm this.Federal University of Sergipe, Rosa ElzeLaboratory of Bioecology and Crustacean Systematics (LBSC) Department of Biology Faculty of Philosophy Science and Letters at Ribeirão Preto (FFCLRP) University of São Paulo (USP)NEBECC: Group of Studies on Crustacean Biology Ecology and Culture São Paulo State Unversity Distrito de Rubião JúniorUniversidade Federal de Sergipe (UFS)Universidade de São Paulo (USP)Distrito de Rubião JúniorP. Rios, DavidA.F. Pantaleão, JoãoL. Hirose, Gustavo2022-04-28T19:45:29Z2022-04-28T19:45:29Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1080/07924259.2021.1980442Invertebrate Reproduction and Development.0792-4259http://hdl.handle.net/11449/22257910.1080/07924259.2021.19804422-s2.0-85116526711Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInvertebrate Reproduction and Developmentinfo:eu-repo/semantics/openAccess2022-04-28T19:45:29Zoai:repositorio.unesp.br:11449/222579Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:48:57.365408Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) |
title |
Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) |
spellingShingle |
Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) P. Rios, David alternative mating tactics dominance hierarchies heterogeneous individual growth Key-words: male polymorphism sexual selection |
title_short |
Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) |
title_full |
Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) |
title_fullStr |
Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) |
title_full_unstemmed |
Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) |
title_sort |
Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) |
author |
P. Rios, David |
author_facet |
P. Rios, David A.F. Pantaleão, João L. Hirose, Gustavo |
author_role |
author |
author2 |
A.F. Pantaleão, João L. Hirose, Gustavo |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Sergipe (UFS) Universidade de São Paulo (USP) Distrito de Rubião Júnior |
dc.contributor.author.fl_str_mv |
P. Rios, David A.F. Pantaleão, João L. Hirose, Gustavo |
dc.subject.por.fl_str_mv |
alternative mating tactics dominance hierarchies heterogeneous individual growth Key-words: male polymorphism sexual selection |
topic |
alternative mating tactics dominance hierarchies heterogeneous individual growth Key-words: male polymorphism sexual selection |
description |
This study tested the hypothesis of the existence of male morphotypes in Macrobrachium acanthurus, a species of recognized economic potential, with an extensive geographic distribution. The collections occurred on eight occasions between July 2016 and March 2018 at seven points along the Jequitinhonha River, state of Bahia, Brazil. The identification of male morphotypes occurred through morphological and morphometric analyses. In total, 297 males were collected. The carapace length (CL) ranged from 4.6 to 41.81 mm, with a size at onset of maturity estimated at 11.85 mm. The morphological and morphometric analyses confirmed our hypothesis with the distinction of three morphotypes: M1, M2, and M3. M1 was characterized by males with chelipeds similar to those of females: relatively small, with tiny spines and without pubescence in the dactylus; M2 males had chelipeds larger than those of M1, as well as larger and denser spines, with little pubescence in the dactylus; and M3 individuals had considerably more robust chelipeds, very prominent spines and a thick layer of pubescence when compared to those of the previous morphotype. Our results suggest a social hierarchy where M1 is subordinate, M2 subdominant, and M3 the dominant morphotype. However, behavioural studies are needed to confirm this. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-28T19:45:29Z 2022-04-28T19:45:29Z |
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/10.1080/07924259.2021.1980442 Invertebrate Reproduction and Development. 0792-4259 http://hdl.handle.net/11449/222579 10.1080/07924259.2021.1980442 2-s2.0-85116526711 |
url |
http://dx.doi.org/10.1080/07924259.2021.1980442 http://hdl.handle.net/11449/222579 |
identifier_str_mv |
Invertebrate Reproduction and Development. 0792-4259 10.1080/07924259.2021.1980442 2-s2.0-85116526711 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Invertebrate Reproduction and Development |
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_ |
1808129122658942976 |