Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event
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/10.1071/MF18228 http://hdl.handle.net/11449/188999 |
Resumo: | Here, we investigated the reproductive biology (frequency and distribution patterns of ovigerous females, fecundity, reproductive output and egg size and volume) of Macrobrachium amazonicum in four populations living in Neotropical reservoirs, so as to verify whether this process was affected by the 2014-2016 'El Niño' event. The following two phenotypes were identified: in two populations, small-size (SS) females (CL: 9.05 and 10.06 mm) carried few eggs (X: 141 and 219) with a larger volume (X: 0.188 and 0.212 mm 3 ), whereas, in the other two populations, large-size (LS) females (CL: 15.89 and 14.51 mm) carried many eggs (X: 814 and 846) with a smaller volume (X: 0.130 and 0.143 mm 3 ). All populations showed continuous reproduction and similar reproductive output. 'El Niño' did not directly affect both phenotypes, which is a reflection of the reproductive plasticity observed in this species. This phenomenon acted as a stressing factor, modifying the reproductive patterns of the species in a space-temporal scale. Ovigerous females showed specificity in habitat use, with SS females being associated with macrophytes in deeper environments (refuges), and LS females being associated with shallow sandy areas (shelter and nursery). The high variability of reproductive aspects is better explained by intrinsic factors and could be implying an incipient speciation. |
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spelling |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' eventAmazon River prawnCarideaENSOwater-column levelsHere, we investigated the reproductive biology (frequency and distribution patterns of ovigerous females, fecundity, reproductive output and egg size and volume) of Macrobrachium amazonicum in four populations living in Neotropical reservoirs, so as to verify whether this process was affected by the 2014-2016 'El Niño' event. The following two phenotypes were identified: in two populations, small-size (SS) females (CL: 9.05 and 10.06 mm) carried few eggs (X: 141 and 219) with a larger volume (X: 0.188 and 0.212 mm 3 ), whereas, in the other two populations, large-size (LS) females (CL: 15.89 and 14.51 mm) carried many eggs (X: 814 and 846) with a smaller volume (X: 0.130 and 0.143 mm 3 ). All populations showed continuous reproduction and similar reproductive output. 'El Niño' did not directly affect both phenotypes, which is a reflection of the reproductive plasticity observed in this species. This phenomenon acted as a stressing factor, modifying the reproductive patterns of the species in a space-temporal scale. Ovigerous females showed specificity in habitat use, with SS females being associated with macrophytes in deeper environments (refuges), and LS females being associated with shallow sandy areas (shelter and nursery). The high variability of reproductive aspects is better explained by intrinsic factors and could be implying an incipient speciation.Universidade Estadual Paulista (UNESP)Universidade Estadual Paulista (UNESP) Centro de Aquicultura (CAUNESP)Invertebrate Morphology Laboratory (IML) Departamento de Biologia Aplicada CAUNESP IEAMar Universidade Estadual Paulista (UNESP)Universidade Estadual Paulista (UNESP)Universidade Estadual Paulista (UNESP) Centro de Aquicultura (CAUNESP)Invertebrate Morphology Laboratory (IML) Departamento de Biologia Aplicada CAUNESP IEAMar Universidade Estadual Paulista (UNESP)Universidade Estadual Paulista (Unesp)Paschoal, Lucas R. P. [UNESP]De Oliveira, Leo J. F. [UNESP]Andrioli, Guilherme C. [UNESP]Zara, Fernando J. [UNESP]2019-10-06T16:26:31Z2019-10-06T16:26:31Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1071/MF18228Marine and Freshwater Research.1323-1650http://hdl.handle.net/11449/18899910.1071/MF182282-s2.0-85064502430Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMarine and Freshwater Researchinfo:eu-repo/semantics/openAccess2021-10-23T19:28:28Zoai:repositorio.unesp.br:11449/188999Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T19:28:28Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event |
title |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event |
spellingShingle |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event Paschoal, Lucas R. P. [UNESP] Amazon River prawn Caridea ENSO water-column levels |
title_short |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event |
title_full |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event |
title_fullStr |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event |
title_full_unstemmed |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event |
title_sort |
Reproductive biology of Macrobrachium amazonicum (Heller, 1862) populations with distinct phenotypes in Neotropical reservoirs during the 'El Niño' event |
author |
Paschoal, Lucas R. P. [UNESP] |
author_facet |
Paschoal, Lucas R. P. [UNESP] De Oliveira, Leo J. F. [UNESP] Andrioli, Guilherme C. [UNESP] Zara, Fernando J. [UNESP] |
author_role |
author |
author2 |
De Oliveira, Leo J. F. [UNESP] Andrioli, Guilherme C. [UNESP] Zara, Fernando J. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Paschoal, Lucas R. P. [UNESP] De Oliveira, Leo J. F. [UNESP] Andrioli, Guilherme C. [UNESP] Zara, Fernando J. [UNESP] |
dc.subject.por.fl_str_mv |
Amazon River prawn Caridea ENSO water-column levels |
topic |
Amazon River prawn Caridea ENSO water-column levels |
description |
Here, we investigated the reproductive biology (frequency and distribution patterns of ovigerous females, fecundity, reproductive output and egg size and volume) of Macrobrachium amazonicum in four populations living in Neotropical reservoirs, so as to verify whether this process was affected by the 2014-2016 'El Niño' event. The following two phenotypes were identified: in two populations, small-size (SS) females (CL: 9.05 and 10.06 mm) carried few eggs (X: 141 and 219) with a larger volume (X: 0.188 and 0.212 mm 3 ), whereas, in the other two populations, large-size (LS) females (CL: 15.89 and 14.51 mm) carried many eggs (X: 814 and 846) with a smaller volume (X: 0.130 and 0.143 mm 3 ). All populations showed continuous reproduction and similar reproductive output. 'El Niño' did not directly affect both phenotypes, which is a reflection of the reproductive plasticity observed in this species. This phenomenon acted as a stressing factor, modifying the reproductive patterns of the species in a space-temporal scale. Ovigerous females showed specificity in habitat use, with SS females being associated with macrophytes in deeper environments (refuges), and LS females being associated with shallow sandy areas (shelter and nursery). The high variability of reproductive aspects is better explained by intrinsic factors and could be implying an incipient speciation. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:26:31Z 2019-10-06T16:26:31Z 2019-01-01 |
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/10.1071/MF18228 Marine and Freshwater Research. 1323-1650 http://hdl.handle.net/11449/188999 10.1071/MF18228 2-s2.0-85064502430 |
url |
http://dx.doi.org/10.1071/MF18228 http://hdl.handle.net/11449/188999 |
identifier_str_mv |
Marine and Freshwater Research. 1323-1650 10.1071/MF18228 2-s2.0-85064502430 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Marine and Freshwater Research |
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_ |
1792962218347724800 |