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Temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation

Freshwater fish communities segregate along water temperature gradients attributed in part to temperature-mediated physiological processes that affect species fitness. In spring complexes of southwest USA, spring complexes with narrow range of water temperatures are dominated by a community of fishe...

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Autores principales: Craig, Cody A., Maikoetter, Jeremy D., Bonner, Timothy H.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6322479/
https://www.ncbi.nlm.nih.gov/pubmed/30631643
http://dx.doi.org/10.7717/peerj.6144
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author Craig, Cody A.
Maikoetter, Jeremy D.
Bonner, Timothy H.
author_facet Craig, Cody A.
Maikoetter, Jeremy D.
Bonner, Timothy H.
author_sort Craig, Cody A.
collection PubMed
description Freshwater fish communities segregate along water temperature gradients attributed in part to temperature-mediated physiological processes that affect species fitness. In spring complexes of southwest USA, spring complexes with narrow range of water temperatures are dominated by a community of fishes (i.e., spring-associated fishes), whereas riverine habitats with wide-range of water temperatures are dominated by a different community of fishes (i.e., riverine-associated fishes). The purpose of this study was to test a prediction of the concept that temperature-mediated species performance is a mechanism in maintaining community segregation. We predicted that a spring-associated fish (Largespring Gambusia Gambusia geiseri) would feed first and more often in a pairing with a riverine-associated fish (Western Mosquitofish G. affinis) at an average spring temperature (23 °C) and that the riverine-associated fish would feed first and more often in a pairing with the spring-associated fish at a warm riverine temperature (30 °C). Among four trails consisting of 30 pairings, at the spring complex temperature (23 °C), Largespring Gambusia had a greater number of first feeds (mean ± 1 SD, 5.0 ± 0.82) than Western Mosquitofish (2.5 ± 1.73) and had greater mean number of total feeds (1.9 ± 0.31) than Western Mosquitofish (0.81 ± 0.70). At the riverine environment temperature (30 °C), Western Mosquitofish had a greater number of first feeds (5.25 ± 1.71) than Largespring Gambusia (2.5 ± 1.73) and had greater mean number of total feeds (2.78 ± 1.05) than Largespring Gambusia (0.94 ± 0.68). Our findings suggest that temperature-mediated species performance could be maintaining segregation between the two fish communities. This study benefits our understanding of distributional patterns and improves threat assessments of stenothermal aquatic organisms.
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spelling pubmed-63224792019-01-10 Temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation Craig, Cody A. Maikoetter, Jeremy D. Bonner, Timothy H. PeerJ Animal Behavior Freshwater fish communities segregate along water temperature gradients attributed in part to temperature-mediated physiological processes that affect species fitness. In spring complexes of southwest USA, spring complexes with narrow range of water temperatures are dominated by a community of fishes (i.e., spring-associated fishes), whereas riverine habitats with wide-range of water temperatures are dominated by a different community of fishes (i.e., riverine-associated fishes). The purpose of this study was to test a prediction of the concept that temperature-mediated species performance is a mechanism in maintaining community segregation. We predicted that a spring-associated fish (Largespring Gambusia Gambusia geiseri) would feed first and more often in a pairing with a riverine-associated fish (Western Mosquitofish G. affinis) at an average spring temperature (23 °C) and that the riverine-associated fish would feed first and more often in a pairing with the spring-associated fish at a warm riverine temperature (30 °C). Among four trails consisting of 30 pairings, at the spring complex temperature (23 °C), Largespring Gambusia had a greater number of first feeds (mean ± 1 SD, 5.0 ± 0.82) than Western Mosquitofish (2.5 ± 1.73) and had greater mean number of total feeds (1.9 ± 0.31) than Western Mosquitofish (0.81 ± 0.70). At the riverine environment temperature (30 °C), Western Mosquitofish had a greater number of first feeds (5.25 ± 1.71) than Largespring Gambusia (2.5 ± 1.73) and had greater mean number of total feeds (2.78 ± 1.05) than Largespring Gambusia (0.94 ± 0.68). Our findings suggest that temperature-mediated species performance could be maintaining segregation between the two fish communities. This study benefits our understanding of distributional patterns and improves threat assessments of stenothermal aquatic organisms. PeerJ Inc. 2019-01-04 /pmc/articles/PMC6322479/ /pubmed/30631643 http://dx.doi.org/10.7717/peerj.6144 Text en © 2019 Craig et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Animal Behavior
Craig, Cody A.
Maikoetter, Jeremy D.
Bonner, Timothy H.
Temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation
title Temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation
title_full Temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation
title_fullStr Temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation
title_full_unstemmed Temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation
title_short Temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation
title_sort temperature-mediated feeding between spring-associated and riverine-associated congeners, with implications for community segregation
topic Animal Behavior
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6322479/
https://www.ncbi.nlm.nih.gov/pubmed/30631643
http://dx.doi.org/10.7717/peerj.6144
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AT bonnertimothyh temperaturemediatedfeedingbetweenspringassociatedandriverineassociatedcongenerswithimplicationsforcommunitysegregation