Metabolic responses and resilience to environmental challenges in the sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801)
In the context of climate change, warming of the seas and expansion of hypoxic zones are challenges that most species of fish are, or will be subjected to. Understanding how different species cope with these changes in their environment at the individual level can shed light on how populations and e...
Published in: | Animals |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI
2023
|
Subjects: | |
Online Access: | http://hdl.handle.net/10400.1/19152 https://doi.org/10.3390/ani13040632 |
id |
ftunivalgarve:oai:sapientia.ualg.pt:10400.1/19152 |
---|---|
record_format |
openpolar |
spelling |
ftunivalgarve:oai:sapientia.ualg.pt:10400.1/19152 2023-05-15T17:41:38+02:00 Metabolic responses and resilience to environmental challenges in the sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801) Molina, Juan Kunzmann, Andreas Reis, João Pena Guerreiro, Pedro M 2023-02-24T14:09:01Z http://hdl.handle.net/10400.1/19152 https://doi.org/10.3390/ani13040632 eng eng MDPI Animals 13 (4): 632 (2023) http://hdl.handle.net/10400.1/19152 doi:10.3390/ani13040632 2076-2615 openAccess http://creativecommons.org/licenses/by/4.0/ Fish physiology Climate change Hypoxia tolerance Temperature tolerance Metabolic rate Aerobic scope article 2023 ftunivalgarve https://doi.org/10.3390/ani13040632 2023-03-22T01:04:44Z In the context of climate change, warming of the seas and expansion of hypoxic zones are challenges that most species of fish are, or will be subjected to. Understanding how different species cope with these changes in their environment at the individual level can shed light on how populations and ecosystems will be affected. We provide first-time estimates on the metabolic rates, thermal, and oxygen-related limits for Halobatrachus didactylus, a coastal sedentary fish that lives in intertidal environments of the Northeast Atlantic. Using respirometry in different experimental designs, we found that this species is highly resistant to acute thermal stress (CTmax: 34.82 ± 0.66 °C) and acute hypoxia (Pcrit: 0.59–1.97 mg O2 L−1). We found size-specific differences in this stress response, with smaller individuals being more sensitive. We also quantified its aerobic scope and daily activity patterns, finding this fish to be extremely sedentary, with one of the lowest standard metabolic rates found in temperate fish (SMR: 14.96 mg O2 kg−1h−1). H. didactylus activity increases at night, when its metabolic rate increases drastically (RMR: 36.01 mg O2 kg−1h−1). The maximum metabolic rate of H. didactylus was estimated to be 67.31 mg O2 kg−1h−1, producing an aerobic scope of 52.35 mg O2 kg−1h−1 (77.8% increase). The metrics obtained in this study prove that H. didactylus is remarkably resilient to acute environmental variations in temperature and oxygen content, which might enable it to adapt to the extreme abiotic conditions forecasted for the world’s oceans in the near future. ALG-01-0145-FEDER-022121 info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Northeast Atlantic Universidade do Algarve: Sapienta Animals 13 4 632 |
institution |
Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
topic |
Fish physiology Climate change Hypoxia tolerance Temperature tolerance Metabolic rate Aerobic scope |
spellingShingle |
Fish physiology Climate change Hypoxia tolerance Temperature tolerance Metabolic rate Aerobic scope Molina, Juan Kunzmann, Andreas Reis, João Pena Guerreiro, Pedro M Metabolic responses and resilience to environmental challenges in the sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801) |
topic_facet |
Fish physiology Climate change Hypoxia tolerance Temperature tolerance Metabolic rate Aerobic scope |
description |
In the context of climate change, warming of the seas and expansion of hypoxic zones are challenges that most species of fish are, or will be subjected to. Understanding how different species cope with these changes in their environment at the individual level can shed light on how populations and ecosystems will be affected. We provide first-time estimates on the metabolic rates, thermal, and oxygen-related limits for Halobatrachus didactylus, a coastal sedentary fish that lives in intertidal environments of the Northeast Atlantic. Using respirometry in different experimental designs, we found that this species is highly resistant to acute thermal stress (CTmax: 34.82 ± 0.66 °C) and acute hypoxia (Pcrit: 0.59–1.97 mg O2 L−1). We found size-specific differences in this stress response, with smaller individuals being more sensitive. We also quantified its aerobic scope and daily activity patterns, finding this fish to be extremely sedentary, with one of the lowest standard metabolic rates found in temperate fish (SMR: 14.96 mg O2 kg−1h−1). H. didactylus activity increases at night, when its metabolic rate increases drastically (RMR: 36.01 mg O2 kg−1h−1). The maximum metabolic rate of H. didactylus was estimated to be 67.31 mg O2 kg−1h−1, producing an aerobic scope of 52.35 mg O2 kg−1h−1 (77.8% increase). The metrics obtained in this study prove that H. didactylus is remarkably resilient to acute environmental variations in temperature and oxygen content, which might enable it to adapt to the extreme abiotic conditions forecasted for the world’s oceans in the near future. ALG-01-0145-FEDER-022121 info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Molina, Juan Kunzmann, Andreas Reis, João Pena Guerreiro, Pedro M |
author_facet |
Molina, Juan Kunzmann, Andreas Reis, João Pena Guerreiro, Pedro M |
author_sort |
Molina, Juan |
title |
Metabolic responses and resilience to environmental challenges in the sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801) |
title_short |
Metabolic responses and resilience to environmental challenges in the sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801) |
title_full |
Metabolic responses and resilience to environmental challenges in the sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801) |
title_fullStr |
Metabolic responses and resilience to environmental challenges in the sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801) |
title_full_unstemmed |
Metabolic responses and resilience to environmental challenges in the sedentary Batrachoid Halobatrachus didactylus (Bloch & Schneider, 1801) |
title_sort |
metabolic responses and resilience to environmental challenges in the sedentary batrachoid halobatrachus didactylus (bloch & schneider, 1801) |
publisher |
MDPI |
publishDate |
2023 |
url |
http://hdl.handle.net/10400.1/19152 https://doi.org/10.3390/ani13040632 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
Animals 13 (4): 632 (2023) http://hdl.handle.net/10400.1/19152 doi:10.3390/ani13040632 2076-2615 |
op_rights |
openAccess http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/ani13040632 |
container_title |
Animals |
container_volume |
13 |
container_issue |
4 |
container_start_page |
632 |
_version_ |
1766143314520702976 |