Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming.
Recent studies forecast that many ectothermic animals, especially aquatic stenotherms, may not be able to thrive or even survive predicted climate change. These projections, however, generally do not call much attention to the role of behavior, an essential thermoregulatory mechanism of many ectothe...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science (PLoS)
2021
|
Subjects: | |
Online Access: | https://doi.org/10.1371/journal.pone.0252359 https://doaj.org/article/706daea4dd274c999b20e25a18c8473b |
id |
ftdoajarticles:oai:doaj.org/article:706daea4dd274c999b20e25a18c8473b |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:706daea4dd274c999b20e25a18c8473b 2023-05-15T13:56:57+02:00 Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming. Iskander I Ismailov Jordan B Scharping Iraida E Andreeva Michael J Friedlander 2021-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0252359 https://doaj.org/article/706daea4dd274c999b20e25a18c8473b EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pone.0252359 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0252359 https://doaj.org/article/706daea4dd274c999b20e25a18c8473b PLoS ONE, Vol 16, Iss 11, p e0252359 (2021) Medicine R Science Q article 2021 ftdoajarticles https://doi.org/10.1371/journal.pone.0252359 2022-12-31T08:06:14Z Recent studies forecast that many ectothermic animals, especially aquatic stenotherms, may not be able to thrive or even survive predicted climate change. These projections, however, generally do not call much attention to the role of behavior, an essential thermoregulatory mechanism of many ectotherms. Here we characterize species-specific locomotor and respiratory responses to acute ambient warming in two highly stenothermic Antarctic Notothenioid fishes, one of which (Chaenocephalus aceratus) lacks hemoglobin and appears to be less tolerant to thermal stress as compared to the other (Notothenia coriiceps), which expresses hemoglobin. At the onset of ambient warming, both species perform distinct locomotor maneuvers that appear to include avoidance reactions. In response to unavoidable progressive hyperthermia, fishes demonstrate a range of species-specific maneuvers, all of which appear to provide some mitigation of the deleterious effects of obligatory thermoconformation and to compensate for increasing metabolic demand by enhancing the efficacy of branchial respiration. As temperature continues to rise, Chaenocephalus aceratus supplements these behaviors with intensive pectoral fin fanning which may facilitate cutaneous respiration through its scaleless integument, and Notothenia coriiceps manifests respiratory-locomotor coupling during repetitive startle-like maneuvers which may further augment gill ventilation. The latter behaviors, found only in Notothenia coriiceps, have highly stereotyped appearance resembling Fixed Action Pattern sequences. Altogether, this behavioral flexibility could contribute to the reduction of the detrimental effects of acute thermal stress within a limited thermal range. In an ecologically relevant setting, this may enable efficient thermoregulation of fishes by habitat selection, thus facilitating their resilience in persistent environmental change. Article in Journal/Newspaper Antarc* Antarctic Directory of Open Access Journals: DOAJ Articles Antarctic Fanning ENVELOPE(-60.632,-60.632,-72.404,-72.404) PLOS ONE 16 11 e0252359 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Iskander I Ismailov Jordan B Scharping Iraida E Andreeva Michael J Friedlander Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming. |
topic_facet |
Medicine R Science Q |
description |
Recent studies forecast that many ectothermic animals, especially aquatic stenotherms, may not be able to thrive or even survive predicted climate change. These projections, however, generally do not call much attention to the role of behavior, an essential thermoregulatory mechanism of many ectotherms. Here we characterize species-specific locomotor and respiratory responses to acute ambient warming in two highly stenothermic Antarctic Notothenioid fishes, one of which (Chaenocephalus aceratus) lacks hemoglobin and appears to be less tolerant to thermal stress as compared to the other (Notothenia coriiceps), which expresses hemoglobin. At the onset of ambient warming, both species perform distinct locomotor maneuvers that appear to include avoidance reactions. In response to unavoidable progressive hyperthermia, fishes demonstrate a range of species-specific maneuvers, all of which appear to provide some mitigation of the deleterious effects of obligatory thermoconformation and to compensate for increasing metabolic demand by enhancing the efficacy of branchial respiration. As temperature continues to rise, Chaenocephalus aceratus supplements these behaviors with intensive pectoral fin fanning which may facilitate cutaneous respiration through its scaleless integument, and Notothenia coriiceps manifests respiratory-locomotor coupling during repetitive startle-like maneuvers which may further augment gill ventilation. The latter behaviors, found only in Notothenia coriiceps, have highly stereotyped appearance resembling Fixed Action Pattern sequences. Altogether, this behavioral flexibility could contribute to the reduction of the detrimental effects of acute thermal stress within a limited thermal range. In an ecologically relevant setting, this may enable efficient thermoregulation of fishes by habitat selection, thus facilitating their resilience in persistent environmental change. |
format |
Article in Journal/Newspaper |
author |
Iskander I Ismailov Jordan B Scharping Iraida E Andreeva Michael J Friedlander |
author_facet |
Iskander I Ismailov Jordan B Scharping Iraida E Andreeva Michael J Friedlander |
author_sort |
Iskander I Ismailov |
title |
Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming. |
title_short |
Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming. |
title_full |
Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming. |
title_fullStr |
Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming. |
title_full_unstemmed |
Antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming. |
title_sort |
antarctic teleosts with and without hemoglobin behaviorally mitigate deleterious effects of acute environmental warming. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2021 |
url |
https://doi.org/10.1371/journal.pone.0252359 https://doaj.org/article/706daea4dd274c999b20e25a18c8473b |
long_lat |
ENVELOPE(-60.632,-60.632,-72.404,-72.404) |
geographic |
Antarctic Fanning |
geographic_facet |
Antarctic Fanning |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
PLoS ONE, Vol 16, Iss 11, p e0252359 (2021) |
op_relation |
https://doi.org/10.1371/journal.pone.0252359 https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0252359 https://doaj.org/article/706daea4dd274c999b20e25a18c8473b |
op_doi |
https://doi.org/10.1371/journal.pone.0252359 |
container_title |
PLOS ONE |
container_volume |
16 |
container_issue |
11 |
container_start_page |
e0252359 |
_version_ |
1766264555703369728 |