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Hubáček J, Gvoždík L. Terrestrial amphibians respond to rapidly changing temperatures with individual plasticity of exploratory behaviour. J Therm Biol 2024; 119:103757. [PMID: 38043243 DOI: 10.1016/j.jtherbio.2023.103757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 12/05/2023]
Abstract
Terrestrial ectotherms react to acute changes in environmental temperatures by adjusting their behaviour. Evaluating the adaptive potential of these behavioural adjustments requires information on their repeatability and plasticity. We examined behavioural response (exploration) to acute temperature change in two amphibian taxa, alpine (Ichthyosaura alpestris) and smooth (Lissotriton vulgaris) newts. These responses were investigated at both population and individual levels under multiple thermal contexts (dimensions), represented by the direction and range of changing temperature and rearing thermal regimes. Population-level analyses showed species-specific, non-additive effects of direction and range of temperature change on acute thermal reaction norms for exploration, but explained only a low amount (7-23%) of total variation in exploration. In contrast, within- and among-individual variation in acute thermal reaction norm parameters explained 42-50% of total variation in the examined trait. Although immediate thermal responses varied among individuals (repeatability = 0.07 to 0.53), they were largely shaped by environmental contexts during repeated trials. We conclude that these amphibians respond to acute temperature change through individual plasticity of behavioural traits. A repeated-measures approach under multiple thermal contexts will be needed to identify the selective and plastic potential of behavioural responses used by juvenile newts and perhaps other ectotherm taxa to cope with rapidly changing environmental temperatures.
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Affiliation(s)
- Jiří Hubáček
- Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic; Department of Botany and Zoology, Faculty of Sciences, Masaryk University, Brno, Czech Republic
| | - Lumír Gvoždík
- Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic.
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Harman A, Mahoney H, Thompson WA, Fuzzen MLM, Aggarwal B, Laframboise L, Boreham DR, Manzon RG, Somers CM, Wilson JY. Effect of elevated embryonic incubation temperature on the temperature preference of juvenile lake ( Coregonus clupeaformis) and round whitefish ( Prosopium cylindraceum). CONSERVATION PHYSIOLOGY 2023; 11:coad067. [PMID: 37663927 PMCID: PMC10469578 DOI: 10.1093/conphys/coad067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 07/27/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023]
Abstract
Anthropogenic impacts can lead to increased temperatures in freshwater environments through thermal effluent and climate change. Thermal preference of aquatic organisms can be modulated by abiotic and biotic factors including environmental temperature. Whether increased temperature during embryogenesis can lead to long-term alterations in thermal preference has not been explicitly tested in native freshwater species. Lake (Coregonus clupeaformis) and round (Prosopium cylindraceum) whitefish were incubated at natural and elevated temperatures until hatching, following which, all groups were moved to common garden conditions (15°C) during the post-hatching stage. Temperature preference was determined at 8 months (Lake whitefish only) and 12 months of age (both species) using a shuttle box system. Round whitefish preferred a cooler temperature when incubated at 2 and 6°C compared with 0.5°C. Lake whitefish had similar temperature preferences regardless of age, weight and incubation temperature. These results reveal that temperature preference in freshwater fish can be programmed during early development, and that round whitefish may be more sensitive to incubation temperature. This study highlights the effects that small increases in temperature caused by anthropogenic impacts may have on cold-adapted freshwater fish.
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Affiliation(s)
- Adam Harman
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada
| | - Hannah Mahoney
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada
| | - William Andrew Thompson
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada
| | - Meghan L M Fuzzen
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada
| | - Bhuvan Aggarwal
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada
| | - Lisa Laframboise
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada
| | - Douglas R Boreham
- Medical Sciences, Northern Ontario School of Medicine, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - Richard G Manzon
- Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, Saskatchewan S4S 0A2, Canada
| | - Christopher M Somers
- Department of Biology, University of Regina, 3737 Wascana Parkway, Regina, Saskatchewan S4S 0A2, Canada
| | - Joanna Y Wilson
- Department of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada
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Henry J, Bai Y, Kreuder F, Saaristo M, Kaslin J, Wlodkowic D. A miniaturized electrothermal array for rapid analysis of temperature preference behaviors in ecology and ecotoxicology. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120202. [PMID: 36169081 DOI: 10.1016/j.envpol.2022.120202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 08/16/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Due to technical limitations, there have been minimal studies performed on thermal preferences and thermotactic behaviors of aquatic ectotherm species commonly used in ecotoxicity testing. In this work, we demonstrate an innovative, purpose-built and miniaturized electrothermal array for rapid thermal preference behavioral tests. We applied the novel platform to define thermal preferences in multiple invertebrate and vertebrate species. Specifically, Dugesia notogaea (freshwater planarians), Chironomus tepperi (nonbiting midge larvae), Ostracoda (seed shrimp), Artemia franciscana (brine shrimp), Daphnia carinata (water flea), Austrochiltonia subtenuis (freshwater amphipod), Physa acuta (freshwater snail), Potamopyrgus antipodarum (New Zealand mud snail) and larval stage of Danio rerio (zebrafish) were tested. The Australian freshwater water fleas, amphipods, snail Physa acuta as well as zebrafish exhibited the most consistent preference to cool zones and clear avoidance of zones >27 °C out of nine species tested. Our results indicate the larval stage of zebrafish as the most responsive species highly suitable for prospective development of multidimensional behavioral test batteries. We also showcase preliminary data that environmentally relevant concentrations of pharmaceutical pollutants such as non-steroidal anti-inflammatory drug (NSAID) ibuprofen (9800 ng/L) and insecticide imidacloprid (4600 ng/L) but not anti-depressant venlafaxine (2200 ng/L) and (iv) anticonvulsant medications gabapentin (400 ng/L) can perturb thermal preference behavior of larval zebrafish. Collectively our results demonstrate the utility of simple and inexpensive thermoelectric technology in rapid exploration of thermal preference in diverse species of aquatic animals. We postulate that more broadly such technologies can also have added value in ecotoxicity testing of emerging contaminants.
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Affiliation(s)
- Jason Henry
- The Neurotox Lab, School of Science, RMIT University, Melbourne, Victoria, 3083, Australia
| | - Yutao Bai
- The Neurotox Lab, School of Science, RMIT University, Melbourne, Victoria, 3083, Australia
| | - Florian Kreuder
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, 3800, Australia
| | - Minna Saaristo
- Environmental Protection Authority Victoria, EPA Science, Macleod, Victoria, 3085, Australia
| | - Jan Kaslin
- Australian Regenerative Medicine Institute, Monash University, Clayton, Victoria, 3800, Australia
| | - Donald Wlodkowic
- The Neurotox Lab, School of Science, RMIT University, Melbourne, Victoria, 3083, Australia. http://www.rmit.edu.au/staff/donald-wlodkowic
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