Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1080/07924259.2018.1550445 http://hdl.handle.net/11449/188465 |
Resumo: | Year-round continuous reproduction in tropical regions is an established paradigm in marine ecology. In this study, we tested this paradigm using the ghost shrimp Callichirus seilacheri from the tropical eastern Pacific as a model species. We also examined size-frequency distribution, sex ratio, and recruitment cycle to contribute to the biological knowledge of this species. To this end, a total of 456 individuals of C. seilacheri were collected during 12 months of sampling. Population structure was symmetrical for both sexes, and the overall sex ratio did not differ from evenness. Males outnumbered females in smaller size classes, though, revealing a potential sex-dependent mortality in small individuals. The breeding pattern followed the well-marked seasonal regime of the region, with ovigerous females registered during the rainy season. While natural variation in the seawater temperature had no influence on reproduction of this species, changes in water salinity possibly triggered the appearance of egg-bearing females in the population. Recruitment occurred throughout the year but was more intense during the dry season, following the appearance of ovigerous females. The adaptability of the life cycle of C. seilacheri to the seasonal climate provides further evidence that reproduction in tropical species is not always continuous. |
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Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacificghost shrimpOrton’s rulePopulation structurereproductionsex ratiotriggering factorsYear-round continuous reproduction in tropical regions is an established paradigm in marine ecology. In this study, we tested this paradigm using the ghost shrimp Callichirus seilacheri from the tropical eastern Pacific as a model species. We also examined size-frequency distribution, sex ratio, and recruitment cycle to contribute to the biological knowledge of this species. To this end, a total of 456 individuals of C. seilacheri were collected during 12 months of sampling. Population structure was symmetrical for both sexes, and the overall sex ratio did not differ from evenness. Males outnumbered females in smaller size classes, though, revealing a potential sex-dependent mortality in small individuals. The breeding pattern followed the well-marked seasonal regime of the region, with ovigerous females registered during the rainy season. While natural variation in the seawater temperature had no influence on reproduction of this species, changes in water salinity possibly triggered the appearance of egg-bearing females in the population. Recruitment occurred throughout the year but was more intense during the dry season, following the appearance of ovigerous females. The adaptability of the life cycle of C. seilacheri to the seasonal climate provides further evidence that reproduction in tropical species is not always continuous.Facultad de Ciencias Centro de Estudios Marinos y Limnológicos Universidad de Tarapacá–UTAInstituto de Biociências Grupo de Pesquisa em Biologia de Crustáceos–CRUSTA Câmpus do Litoral Paulista Universidade Estadual Paulista–UNESPCentro de Investigación en Nutrición Animal–CINA Ciudad de la Investigación Universidad de Costa Rica–UCRCentro de Biologia Marinha Universidade de São Paulo–USPInstituto de Biociências Grupo de Pesquisa em Biologia de Crustáceos–CRUSTA Câmpus do Litoral Paulista Universidade Estadual Paulista–UNESPUniversidad de Tarapacá–UTAUniversidade Estadual Paulista (Unesp)Universidad de Costa Rica–UCRUniversidade de São Paulo (USP)Hernáez, Patricio [UNESP]Villegas-Castro, ErickDuarte, Rafael CamposAmaro Pinheiro, Marcelo Antonio [UNESP]2019-10-06T16:08:54Z2019-10-06T16:08:54Z2019-04-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article88-99http://dx.doi.org/10.1080/07924259.2018.1550445Invertebrate Reproduction and Development, v. 63, n. 2, p. 88-99, 2019.0792-4259http://hdl.handle.net/11449/18846510.1080/07924259.2018.15504452-s2.0-85058075059Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInvertebrate Reproduction and Developmentinfo:eu-repo/semantics/openAccess2021-10-22T21:10:06Zoai:repositorio.unesp.br:11449/188465Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:40:35.445658Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific |
title |
Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific |
spellingShingle |
Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific Hernáez, Patricio [UNESP] ghost shrimp Orton’s rule Population structure reproduction sex ratio triggering factors |
title_short |
Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific |
title_full |
Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific |
title_fullStr |
Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific |
title_full_unstemmed |
Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific |
title_sort |
Population biology and breeding cycle of the burrowing shrimp Callichirus seilacheri (Decapoda, Callianassidae) from the eastern tropical Pacific |
author |
Hernáez, Patricio [UNESP] |
author_facet |
Hernáez, Patricio [UNESP] Villegas-Castro, Erick Duarte, Rafael Campos Amaro Pinheiro, Marcelo Antonio [UNESP] |
author_role |
author |
author2 |
Villegas-Castro, Erick Duarte, Rafael Campos Amaro Pinheiro, Marcelo Antonio [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidad de Tarapacá–UTA Universidade Estadual Paulista (Unesp) Universidad de Costa Rica–UCR Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Hernáez, Patricio [UNESP] Villegas-Castro, Erick Duarte, Rafael Campos Amaro Pinheiro, Marcelo Antonio [UNESP] |
dc.subject.por.fl_str_mv |
ghost shrimp Orton’s rule Population structure reproduction sex ratio triggering factors |
topic |
ghost shrimp Orton’s rule Population structure reproduction sex ratio triggering factors |
description |
Year-round continuous reproduction in tropical regions is an established paradigm in marine ecology. In this study, we tested this paradigm using the ghost shrimp Callichirus seilacheri from the tropical eastern Pacific as a model species. We also examined size-frequency distribution, sex ratio, and recruitment cycle to contribute to the biological knowledge of this species. To this end, a total of 456 individuals of C. seilacheri were collected during 12 months of sampling. Population structure was symmetrical for both sexes, and the overall sex ratio did not differ from evenness. Males outnumbered females in smaller size classes, though, revealing a potential sex-dependent mortality in small individuals. The breeding pattern followed the well-marked seasonal regime of the region, with ovigerous females registered during the rainy season. While natural variation in the seawater temperature had no influence on reproduction of this species, changes in water salinity possibly triggered the appearance of egg-bearing females in the population. Recruitment occurred throughout the year but was more intense during the dry season, following the appearance of ovigerous females. The adaptability of the life cycle of C. seilacheri to the seasonal climate provides further evidence that reproduction in tropical species is not always continuous. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:08:54Z 2019-10-06T16:08:54Z 2019-04-03 |
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/10.1080/07924259.2018.1550445 Invertebrate Reproduction and Development, v. 63, n. 2, p. 88-99, 2019. 0792-4259 http://hdl.handle.net/11449/188465 10.1080/07924259.2018.1550445 2-s2.0-85058075059 |
url |
http://dx.doi.org/10.1080/07924259.2018.1550445 http://hdl.handle.net/11449/188465 |
identifier_str_mv |
Invertebrate Reproduction and Development, v. 63, n. 2, p. 88-99, 2019. 0792-4259 10.1080/07924259.2018.1550445 2-s2.0-85058075059 |
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.format.none.fl_str_mv |
88-99 |
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_ |
1808128842636722176 |