Abiotic drivers of activity in a large, free-ranging, freshwater teleost, Murray cod (Maccullochella peelii)
The allocation of time and energy to different behaviours can impact survival and fitness, and ultimately influence population dynamics. Intrinsically, the rate at which animals expend energy is a key component in understanding how they interact with surrounding environments. Activity, derived throu...
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| Veröffentlicht in: | PloS one 2018-06, Vol.13 (6), p.e0198972-e0198972 |
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| creator | Thiem, Jason D Wooden, Ian J Baumgartner, Lee J Butler, Gavin L Forbes, Jamin Taylor, Matthew D Watts, Robyn J |
| description | The allocation of time and energy to different behaviours can impact survival and fitness, and ultimately influence population dynamics. Intrinsically, the rate at which animals expend energy is a key component in understanding how they interact with surrounding environments. Activity, derived through locomotion and basic metabolism, represents the principal energy cost for most animals, although it is rarely quantified in the field. We examined some abiotic drivers of variability in locomotor activity of a free-ranging freshwater predatory fish, Murray cod (Maccullochella peelii), for six months using tri-axial accelerometers. Murray cod (n = 20) occupied discrete river reaches and generally exhibited small-scale movements ( |
| doi_str_mv | 10.1371/journal.pone.0198972 |
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Intrinsically, the rate at which animals expend energy is a key component in understanding how they interact with surrounding environments. Activity, derived through locomotion and basic metabolism, represents the principal energy cost for most animals, although it is rarely quantified in the field. We examined some abiotic drivers of variability in locomotor activity of a free-ranging freshwater predatory fish, Murray cod (Maccullochella peelii), for six months using tri-axial accelerometers. Murray cod (n = 20) occupied discrete river reaches and generally exhibited small-scale movements (<5 km). Activity was highest during crepuscular and nocturnal periods when water temperatures were warmest (19-30°C; January-March). As water temperatures cooled (9-21°C; April-June) Murray cod were active throughout the full diel cycle and dormant periods were rarely observed. Light level, water temperature and river discharge all had a significant, non-linear effect on activity. Activity peaked during low light levels, at water temperatures of ~20°C, and at discharge rates of ~400 ML d-1. The temporal changes observed in the behaviour of Murray cod likely reflect the complex interactions between physiological requirements and prey resource behaviour and availability in driving activity, and highlight the importance of empirical field data to inform bioenergetics models.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0198972</identifier><identifier>PMID: 29883481</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Accelerometers ; Acoustics ; Analysis ; Animal behavior ; Animals ; Behavior ; Bioenergetics ; Biology and Life Sciences ; Cod ; Creeks & streams ; Crepuscular ; Earth Sciences ; Ecology ; Ecology and Environmental Sciences ; Ecosystem components ; Endangered & extinct species ; Energy metabolism ; Energy Metabolism - physiology ; Fish ; Fisheries management ; Fishing ; Fitness ; Freshwater fish ; Gadiformes - physiology ; Light ; Light levels ; Locomotion ; Locomotion - physiology ; Locomotor activity ; Maccullochella ikei ; Maccullochella peelii ; Medicine and Health Sciences ; Metabolism ; Murray cod ; Nocturnal ; Palaemonidae ; Physiological aspects ; Physiology ; Population dynamics ; Prey ; River discharge ; River flow ; Rivers ; Salvelinus confluentus ; Stream flow ; Stress, Physiological - physiology ; Temperature ; Water discharge ; Water temperature</subject><ispartof>PloS one, 2018-06, Vol.13 (6), p.e0198972-e0198972</ispartof><rights>COPYRIGHT 2018 Public Library of Science</rights><rights>2018 Thiem et al. This is an open access article distributed under the terms of the Creative Commons Attribution License: http://creativecommons.org/licenses/by/4.0/ (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. 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Intrinsically, the rate at which animals expend energy is a key component in understanding how they interact with surrounding environments. Activity, derived through locomotion and basic metabolism, represents the principal energy cost for most animals, although it is rarely quantified in the field. We examined some abiotic drivers of variability in locomotor activity of a free-ranging freshwater predatory fish, Murray cod (Maccullochella peelii), for six months using tri-axial accelerometers. Murray cod (n = 20) occupied discrete river reaches and generally exhibited small-scale movements (<5 km). Activity was highest during crepuscular and nocturnal periods when water temperatures were warmest (19-30°C; January-March). As water temperatures cooled (9-21°C; April-June) Murray cod were active throughout the full diel cycle and dormant periods were rarely observed. Light level, water temperature and river discharge all had a significant, non-linear effect on activity. 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The temporal changes observed in the behaviour of Murray cod likely reflect the complex interactions between physiological requirements and prey resource behaviour and availability in driving activity, and highlight the importance of empirical field data to inform bioenergetics models.</description><subject>Accelerometers</subject><subject>Acoustics</subject><subject>Analysis</subject><subject>Animal behavior</subject><subject>Animals</subject><subject>Behavior</subject><subject>Bioenergetics</subject><subject>Biology and Life Sciences</subject><subject>Cod</subject><subject>Creeks & streams</subject><subject>Crepuscular</subject><subject>Earth Sciences</subject><subject>Ecology</subject><subject>Ecology and Environmental Sciences</subject><subject>Ecosystem components</subject><subject>Endangered & extinct species</subject><subject>Energy metabolism</subject><subject>Energy Metabolism - physiology</subject><subject>Fish</subject><subject>Fisheries management</subject><subject>Fishing</subject><subject>Fitness</subject><subject>Freshwater fish</subject><subject>Gadiformes - 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Activity peaked during low light levels, at water temperatures of ~20°C, and at discharge rates of ~400 ML d-1. The temporal changes observed in the behaviour of Murray cod likely reflect the complex interactions between physiological requirements and prey resource behaviour and availability in driving activity, and highlight the importance of empirical field data to inform bioenergetics models.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>29883481</pmid><doi>10.1371/journal.pone.0198972</doi><tpages>e0198972</tpages><orcidid>https://orcid.org/0000-0002-5585-8560</orcidid><orcidid>https://orcid.org/0000-0002-1237-5163</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Accelerometers Acoustics Analysis Animal behavior Animals Behavior Bioenergetics Biology and Life Sciences Cod Creeks & streams Crepuscular Earth Sciences Ecology Ecology and Environmental Sciences Ecosystem components Endangered & extinct species Energy metabolism Energy Metabolism - physiology Fish Fisheries management Fishing Fitness Freshwater fish Gadiformes - physiology Light Light levels Locomotion Locomotion - physiology Locomotor activity Maccullochella ikei Maccullochella peelii Medicine and Health Sciences Metabolism Murray cod Nocturnal Palaemonidae Physiological aspects Physiology Population dynamics Prey River discharge River flow Rivers Salvelinus confluentus Stream flow Stress, Physiological - physiology Temperature Water discharge Water temperature |
| title | Abiotic drivers of activity in a large, free-ranging, freshwater teleost, Murray cod (Maccullochella peelii) |
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