Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Neotropical ichthyology (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300611 |
Resumo: | This study aimed to evaluate the importance of two environments situated in the main channel of the Peixe River (a tributary of the upper Uruguay River) on fish reproduction and initial growth. Ichthyoplankton, macrozooplankton, and zoobenthos collections were taken on a monthly basis from October 2011 to March 2012, sampling a rapids and a pool environment. The instrument used for the capture of the ichthyoplankton in both environments was a light trap. In total, 795 eggs and 274 larvae were captured. The species that presented higher abundance and occurrence frequency out of the total captured in both environments were Leporinus obtusidens, Bryconamericus iheringii, and Bryconamericus stramineus. The evaluation of the feeding activity reveals a major repletion degree of the larvae in more advanced stages in the pool. The pool environment presented a higher abundance of larvae in more advanced development stages. We conclude that the channel of the Peixe River is important for the reproduction and initial growth of fish and that each river environment seems to fulfill a different role in the life cycle of the ichthyoplankton community. |
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Neotropical ichthyology (Online) |
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Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplainsFish breedingLarvae feedingMigratoryNursery environmentsUpper Uruguay RiverThis study aimed to evaluate the importance of two environments situated in the main channel of the Peixe River (a tributary of the upper Uruguay River) on fish reproduction and initial growth. Ichthyoplankton, macrozooplankton, and zoobenthos collections were taken on a monthly basis from October 2011 to March 2012, sampling a rapids and a pool environment. The instrument used for the capture of the ichthyoplankton in both environments was a light trap. In total, 795 eggs and 274 larvae were captured. The species that presented higher abundance and occurrence frequency out of the total captured in both environments were Leporinus obtusidens, Bryconamericus iheringii, and Bryconamericus stramineus. The evaluation of the feeding activity reveals a major repletion degree of the larvae in more advanced stages in the pool. The pool environment presented a higher abundance of larvae in more advanced development stages. We conclude that the channel of the Peixe River is important for the reproduction and initial growth of fish and that each river environment seems to fulfill a different role in the life cycle of the ichthyoplankton community.Sociedade Brasileira de Ictiologia2014-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300611Neotropical Ichthyology v.12 n.3 2014reponame:Neotropical ichthyology (Online)instname:Sociedade Brasileira de Ictiologia (SBI)instacron:SBI10.1590/1982-0224-20130116info:eu-repo/semantics/openAccessÁvila-Simas,Sunshine deReynalte-Tataje,David AugustoZaniboni-Filho,Evoyeng2015-09-17T00:00:00Zoai:scielo:S1679-62252014000300611Revistahttp://www.ufrgs.br/ni/https://old.scielo.br/oai/scielo-oai.php||neoichth@nupelia.uem.br1982-02241679-6225opendoar:2015-09-17T00:00Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI)false |
dc.title.none.fl_str_mv |
Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains |
title |
Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains |
spellingShingle |
Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains Ávila-Simas,Sunshine de Fish breeding Larvae feeding Migratory Nursery environments Upper Uruguay River |
title_short |
Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains |
title_full |
Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains |
title_fullStr |
Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains |
title_full_unstemmed |
Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains |
title_sort |
Pools and rapids as spawning and nursery areas for fish in a river stretch without floodplains |
author |
Ávila-Simas,Sunshine de |
author_facet |
Ávila-Simas,Sunshine de Reynalte-Tataje,David Augusto Zaniboni-Filho,Evoy |
author_role |
author |
author2 |
Reynalte-Tataje,David Augusto Zaniboni-Filho,Evoy |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Ávila-Simas,Sunshine de Reynalte-Tataje,David Augusto Zaniboni-Filho,Evoy |
dc.subject.por.fl_str_mv |
Fish breeding Larvae feeding Migratory Nursery environments Upper Uruguay River |
topic |
Fish breeding Larvae feeding Migratory Nursery environments Upper Uruguay River |
description |
This study aimed to evaluate the importance of two environments situated in the main channel of the Peixe River (a tributary of the upper Uruguay River) on fish reproduction and initial growth. Ichthyoplankton, macrozooplankton, and zoobenthos collections were taken on a monthly basis from October 2011 to March 2012, sampling a rapids and a pool environment. The instrument used for the capture of the ichthyoplankton in both environments was a light trap. In total, 795 eggs and 274 larvae were captured. The species that presented higher abundance and occurrence frequency out of the total captured in both environments were Leporinus obtusidens, Bryconamericus iheringii, and Bryconamericus stramineus. The evaluation of the feeding activity reveals a major repletion degree of the larvae in more advanced stages in the pool. The pool environment presented a higher abundance of larvae in more advanced development stages. We conclude that the channel of the Peixe River is important for the reproduction and initial growth of fish and that each river environment seems to fulfill a different role in the life cycle of the ichthyoplankton community. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300611 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000300611 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1982-0224-20130116 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ictiologia |
dc.source.none.fl_str_mv |
Neotropical Ichthyology v.12 n.3 2014 reponame:Neotropical ichthyology (Online) instname:Sociedade Brasileira de Ictiologia (SBI) instacron:SBI |
instname_str |
Sociedade Brasileira de Ictiologia (SBI) |
instacron_str |
SBI |
institution |
SBI |
reponame_str |
Neotropical ichthyology (Online) |
collection |
Neotropical ichthyology (Online) |
repository.name.fl_str_mv |
Neotropical ichthyology (Online) - Sociedade Brasileira de Ictiologia (SBI) |
repository.mail.fl_str_mv |
||neoichth@nupelia.uem.br |
_version_ |
1752122181360287744 |