Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Iheringia. Série Zoologia |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100232 |
Resumo: | ABSTRACT Considering that the anti-predation behaviour of prey fishes may vary with predator hunting strategy, we experimentally investigated the physiological responses of Astyanax bimaculatus (Linnaeus, 1758) shoals to the presence of two piscivorous fish species with different hunting modes: sit-and-wait and active pursuit. In addition, we evaluated the influence of underwater visibility conditions on the interaction between predator and prey. We tested the hypotheses that: (i) prey plasma cortisol and glucose levels vary according to piscivore hunting strategy, and (ii) no reduction in plasma glucose and cortisol levels takes place in turbid environments due to the inability of prey to accurately recognise predators by non-visual signals. The results revealed that the presence of piscivorous fish increased plasma cortisol levels in prey, with no significant difference recorded between the two hunting strategy treatments. We also observed no significant change in plasma glucose levels in different water transparency conditions. Thus, we conclude that physiological changes in the selected prey fish do not vary with predator hunting mode, and it is therefore necessary to consider the ability of the prey to recognise and evaluate danger, regardless of piscivore hunting strategy. |
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Iheringia. Série Zoologia |
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Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditionsMetabolismHoplias aff. malabaricusAstronotus crassipinnisAstyanax bimaculatusturbidityABSTRACT Considering that the anti-predation behaviour of prey fishes may vary with predator hunting strategy, we experimentally investigated the physiological responses of Astyanax bimaculatus (Linnaeus, 1758) shoals to the presence of two piscivorous fish species with different hunting modes: sit-and-wait and active pursuit. In addition, we evaluated the influence of underwater visibility conditions on the interaction between predator and prey. We tested the hypotheses that: (i) prey plasma cortisol and glucose levels vary according to piscivore hunting strategy, and (ii) no reduction in plasma glucose and cortisol levels takes place in turbid environments due to the inability of prey to accurately recognise predators by non-visual signals. The results revealed that the presence of piscivorous fish increased plasma cortisol levels in prey, with no significant difference recorded between the two hunting strategy treatments. We also observed no significant change in plasma glucose levels in different water transparency conditions. Thus, we conclude that physiological changes in the selected prey fish do not vary with predator hunting mode, and it is therefore necessary to consider the ability of the prey to recognise and evaluate danger, regardless of piscivore hunting strategy.Museu de Ciências Naturais2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100232Iheringia. Série Zoologia v.108 2018reponame:Iheringia. Série Zoologiainstname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)instacron:FZB/RS10.1590/1678-4766e2018032info:eu-repo/semantics/openAccessFiori,Leandro FabrícioFigueiredo,Bruno R. S.Pavanello,AudreiAlves,Vander SilvaMathias,Paulo Cezar de FreitasBenedito,Evanildeeng2018-10-08T00:00:00Zoai:scielo:S0073-47212018000100232Revistahttp://www.scielo.br/iszPUBhttps://old.scielo.br/oai/scielo-oai.php||iheringia-zoo@fzb.rs.gov.br1678-47660073-4721opendoar:2018-10-08T00:00Iheringia. Série Zoologia - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS)false |
dc.title.none.fl_str_mv |
Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions |
title |
Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions |
spellingShingle |
Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions Fiori,Leandro Fabrício Metabolism Hoplias aff. malabaricus Astronotus crassipinnis Astyanax bimaculatus turbidity |
title_short |
Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions |
title_full |
Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions |
title_fullStr |
Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions |
title_full_unstemmed |
Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions |
title_sort |
Physiological responses of anti-predation in prey fish to the threat of piscivorous fish in different underwater visibility conditions |
author |
Fiori,Leandro Fabrício |
author_facet |
Fiori,Leandro Fabrício Figueiredo,Bruno R. S. Pavanello,Audrei Alves,Vander Silva Mathias,Paulo Cezar de Freitas Benedito,Evanilde |
author_role |
author |
author2 |
Figueiredo,Bruno R. S. Pavanello,Audrei Alves,Vander Silva Mathias,Paulo Cezar de Freitas Benedito,Evanilde |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Fiori,Leandro Fabrício Figueiredo,Bruno R. S. Pavanello,Audrei Alves,Vander Silva Mathias,Paulo Cezar de Freitas Benedito,Evanilde |
dc.subject.por.fl_str_mv |
Metabolism Hoplias aff. malabaricus Astronotus crassipinnis Astyanax bimaculatus turbidity |
topic |
Metabolism Hoplias aff. malabaricus Astronotus crassipinnis Astyanax bimaculatus turbidity |
description |
ABSTRACT Considering that the anti-predation behaviour of prey fishes may vary with predator hunting strategy, we experimentally investigated the physiological responses of Astyanax bimaculatus (Linnaeus, 1758) shoals to the presence of two piscivorous fish species with different hunting modes: sit-and-wait and active pursuit. In addition, we evaluated the influence of underwater visibility conditions on the interaction between predator and prey. We tested the hypotheses that: (i) prey plasma cortisol and glucose levels vary according to piscivore hunting strategy, and (ii) no reduction in plasma glucose and cortisol levels takes place in turbid environments due to the inability of prey to accurately recognise predators by non-visual signals. The results revealed that the presence of piscivorous fish increased plasma cortisol levels in prey, with no significant difference recorded between the two hunting strategy treatments. We also observed no significant change in plasma glucose levels in different water transparency conditions. Thus, we conclude that physiological changes in the selected prey fish do not vary with predator hunting mode, and it is therefore necessary to consider the ability of the prey to recognise and evaluate danger, regardless of piscivore hunting strategy. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
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=S0073-47212018000100232 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212018000100232 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1678-4766e2018032 |
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 |
Museu de Ciências Naturais |
publisher.none.fl_str_mv |
Museu de Ciências Naturais |
dc.source.none.fl_str_mv |
Iheringia. Série Zoologia v.108 2018 reponame:Iheringia. Série Zoologia instname:Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) instacron:FZB/RS |
instname_str |
Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) |
instacron_str |
FZB/RS |
institution |
FZB/RS |
reponame_str |
Iheringia. Série Zoologia |
collection |
Iheringia. Série Zoologia |
repository.name.fl_str_mv |
Iheringia. Série Zoologia - Fundação Zoobotânica do Rio Grande do Sul (FZB/RS) |
repository.mail.fl_str_mv |
||iheringia-zoo@fzb.rs.gov.br |
_version_ |
1754203965513269248 |