Diet of two insectivorous fish species in a Brazilian semiarid reservoir
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Animal Behaviour and Biometeorology |
Texto Completo: | https://malque.pub/ojs/index.php/jabb/article/view/949 |
Resumo: | Long periods of aridity can cause changes in the diet of fish since hydrological variations affect the availability of food resources. The objective of this study was to investigate the diet of two species of fish (Astyanax aff. bimaculatus and Triportheus signatus), present in the Umari reservoir in Upanema, Rio Grande do Norte, Brazil, to evaluate the influence of seasonality on their diets. The samples were collected quarterly during the months of February to November 2013, with four days in the field, and at five different sites of the reservoir with nets with meshes ranging from 12 to 70 mm (between adjacent nodes). For the identified items in the diet, the frequencies of occurrence and volume, combined in the calculation of the Alimentary Index (IAi), were obtained. Significant alterations in the diet of the species were observed, predominantly in insects. The changes found in the diet indicate an influence of seasonality on the feeding habits of these species, with a predominance of autochthonous items in the dry period and allochthonous items in the rainy period. |
id |
UFERSA-2_30f628a81d444f713898c3085c905d08 |
---|---|
oai_identifier_str |
oai:ojs2.malque.pub:article/949 |
network_acronym_str |
UFERSA-2 |
network_name_str |
Journal of Animal Behaviour and Biometeorology |
repository_id_str |
|
spelling |
Diet of two insectivorous fish species in a Brazilian semiarid reservoirfeedinghydrological cyclenortheastweirLong periods of aridity can cause changes in the diet of fish since hydrological variations affect the availability of food resources. The objective of this study was to investigate the diet of two species of fish (Astyanax aff. bimaculatus and Triportheus signatus), present in the Umari reservoir in Upanema, Rio Grande do Norte, Brazil, to evaluate the influence of seasonality on their diets. The samples were collected quarterly during the months of February to November 2013, with four days in the field, and at five different sites of the reservoir with nets with meshes ranging from 12 to 70 mm (between adjacent nodes). For the identified items in the diet, the frequencies of occurrence and volume, combined in the calculation of the Alimentary Index (IAi), were obtained. Significant alterations in the diet of the species were observed, predominantly in insects. The changes found in the diet indicate an influence of seasonality on the feeding habits of these species, with a predominance of autochthonous items in the dry period and allochthonous items in the rainy period.Malque Publishing2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionResearch Articlesapplication/pdfhttps://malque.pub/ojs/index.php/jabb/article/view/94910.31893/2318-1265jabb.v7n1p11-17Journal of Animal Behaviour and Biometeorology; Vol. 7 No. 1 (2019): January; 11-172318-12652318-1265reponame:Journal of Animal Behaviour and Biometeorologyinstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://malque.pub/ojs/index.php/jabb/article/view/949/520Copyright (c) 2019 Malque Publishinghttps://creativecommons.org/licenses/by-nc-nd/4.0info:eu-repo/semantics/openAccessde Oliveira, Jean Carlos Dantasde Oliveira, Jônnata FernandesRebouças, Luzia Geize FernandesNovaes, José Luís CostaFernandes, Rogério Taygra VasconcelosPeretti, Danielle2023-06-05T18:00:01Zoai:ojs2.malque.pub:article/949Revistahttps://periodicos.ufersa.edu.br/index.php/jabbPUBhttp://periodicos.ufersa.edu.br/revistas/index.php/jabb/oai||souza.jr@ufersa.edu.br2318-12652318-1265opendoar:2023-06-05T18:00:01Journal of Animal Behaviour and Biometeorology - Universidade Federal Rural do Semi-Árido (UFERSA)false |
dc.title.none.fl_str_mv |
Diet of two insectivorous fish species in a Brazilian semiarid reservoir |
title |
Diet of two insectivorous fish species in a Brazilian semiarid reservoir |
spellingShingle |
Diet of two insectivorous fish species in a Brazilian semiarid reservoir de Oliveira, Jean Carlos Dantas feeding hydrological cycle northeast weir |
title_short |
Diet of two insectivorous fish species in a Brazilian semiarid reservoir |
title_full |
Diet of two insectivorous fish species in a Brazilian semiarid reservoir |
title_fullStr |
Diet of two insectivorous fish species in a Brazilian semiarid reservoir |
title_full_unstemmed |
Diet of two insectivorous fish species in a Brazilian semiarid reservoir |
title_sort |
Diet of two insectivorous fish species in a Brazilian semiarid reservoir |
author |
de Oliveira, Jean Carlos Dantas |
author_facet |
de Oliveira, Jean Carlos Dantas de Oliveira, Jônnata Fernandes Rebouças, Luzia Geize Fernandes Novaes, José Luís Costa Fernandes, Rogério Taygra Vasconcelos Peretti, Danielle |
author_role |
author |
author2 |
de Oliveira, Jônnata Fernandes Rebouças, Luzia Geize Fernandes Novaes, José Luís Costa Fernandes, Rogério Taygra Vasconcelos Peretti, Danielle |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
de Oliveira, Jean Carlos Dantas de Oliveira, Jônnata Fernandes Rebouças, Luzia Geize Fernandes Novaes, José Luís Costa Fernandes, Rogério Taygra Vasconcelos Peretti, Danielle |
dc.subject.por.fl_str_mv |
feeding hydrological cycle northeast weir |
topic |
feeding hydrological cycle northeast weir |
description |
Long periods of aridity can cause changes in the diet of fish since hydrological variations affect the availability of food resources. The objective of this study was to investigate the diet of two species of fish (Astyanax aff. bimaculatus and Triportheus signatus), present in the Umari reservoir in Upanema, Rio Grande do Norte, Brazil, to evaluate the influence of seasonality on their diets. The samples were collected quarterly during the months of February to November 2013, with four days in the field, and at five different sites of the reservoir with nets with meshes ranging from 12 to 70 mm (between adjacent nodes). For the identified items in the diet, the frequencies of occurrence and volume, combined in the calculation of the Alimentary Index (IAi), were obtained. Significant alterations in the diet of the species were observed, predominantly in insects. The changes found in the diet indicate an influence of seasonality on the feeding habits of these species, with a predominance of autochthonous items in the dry period and allochthonous items in the rainy period. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Research Articles |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://malque.pub/ojs/index.php/jabb/article/view/949 10.31893/2318-1265jabb.v7n1p11-17 |
url |
https://malque.pub/ojs/index.php/jabb/article/view/949 |
identifier_str_mv |
10.31893/2318-1265jabb.v7n1p11-17 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://malque.pub/ojs/index.php/jabb/article/view/949/520 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Malque Publishing https://creativecommons.org/licenses/by-nc-nd/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Malque Publishing https://creativecommons.org/licenses/by-nc-nd/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Malque Publishing |
publisher.none.fl_str_mv |
Malque Publishing |
dc.source.none.fl_str_mv |
Journal of Animal Behaviour and Biometeorology; Vol. 7 No. 1 (2019): January; 11-17 2318-1265 2318-1265 reponame:Journal of Animal Behaviour and Biometeorology instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Journal of Animal Behaviour and Biometeorology |
collection |
Journal of Animal Behaviour and Biometeorology |
repository.name.fl_str_mv |
Journal of Animal Behaviour and Biometeorology - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
||souza.jr@ufersa.edu.br |
_version_ |
1799319802989248512 |