Ecophysiological patterns of distribution and behavior of freshwater fish in thermal gradients

Golovanov, V. K.

doi:10.1134/s0032945213030016

Cited by 25 publications

(15 citation statements)

References 46 publications

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“…All groups showed little variation after 31 hr and a stable temperature preference could stated after 41 hr, which implies reaching the final temperature preference. This was in compliance with other studies which regarded 24-96 hr sufficient for the fish to reach their final temperature preference (Golovanov, 2013;Reynolds & Casterlin, 1979;Richards, 1977). Table 2).…”

Section: Final Temper Ature Preferen Cesupporting

confidence: 91%

“…At a preferred temperature of 15°C, the metabolism, specific growth rate, swimming speed, cardiac output and oxygen uptake were maximal (Brett, ). There is evidence for a strong correlation of the final temperature preference and optimal growth (Golovanov, ; Jobling, ). However, the temperature preference does not always correspond with optimal growth temperature.…”

Section: Final Temperature Preferencementioning

confidence: 99%

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Temperature preferences of three maraena whitefish ( Coregonus maraena ) size classes under aquaculture conditions

2020

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Section: Final Temper Ature Preferen Cesupporting

confidence: 91%

Section: Final Temperature Preferencementioning

confidence: 99%

Temperature preferences of three maraena whitefish ( Coregonus maraena ) size classes under aquaculture conditions

2020

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“…Previous works have reported variability in the allometric relationship between body mass and metabolic rate at both inter-and intraspecific levels in many organisms (Bokma, 2004;Glazier, 2005;Seibel, 2007). Here, covariations increase as temperature decreases and predation increases (Figure 2b).…”

Section: Discussionmentioning

confidence: 62%

“…Here, covariations increase as temperature decreases and predation increases (Figure 2b). Although this should be interpreted with care (see statistical caution above), the metabolic allometry might vary allowing individuals to optimize energetic efficiency under different environmental constraints (Glazier, 2005;Killen et al, 2010). Fish can notably adapt their lifestyle to increase or decrease their energetic assimilation in order to cope with biotic and abiotic constraints, such as predation (Killen et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Fish were brought to the laboratory and maintained in a thermoregulated room for two to four weeks before experiments. Fish from the different populations were held in independent 150‐L tanks in which water temperature was set to 17°C and photoperiod to a light:dark cycle of 12:12 (Golovanov, ). They were fed with frozen bloodworms three times a week.…”

Section: Methodsmentioning

confidence: 99%

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Variability of functional traits and their syndromes in a freshwater fish species (Phoxinus phoxinus): The role of adaptive and nonadaptive processes

Raffard

Prunier

Loot

et al. 2019

Ecology and Evolution

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Functional traits can covary to form “functional syndromes.” Describing and understanding functional syndromes is an important prerequisite for predicting the effects of organisms on ecosystem functioning. At the intraspecific level, functional syndromes have recently been described, but very little is known about their variability among populations and—if they vary—what the ecological and evolutionary drivers of this variation are. Here, we quantified and compared the variability in four functional traits (body mass, metabolic rate, excretion rate, and boldness), their covariations and the subsequent syndromes among thirteen populations of a common freshwater fish (the European minnow, Phoxinus phoxinus ). We then tested whether functional traits and their covariations, as well as the subsequent syndromes, were underpinned by the phylogenetic relatedness among populations (historical effects) or the local environment (i.e., temperature and predation pressure), and whether adaptive (selection or plasticity) or nonadaptive (genetic drift) processes sustained among‐population variability. We found substantial among‐population variability in functional traits and trait covariations, and in the emerging syndromes. We further found that adaptive mechanisms (plasticity and/or selection) related to water temperature and predation pressure modulated the covariation between body mass and metabolic rate. Other trait covariations were more likely driven by genetic drift, suggesting that nonadaptive processes can also lead to substantial differences in trait covariations among populations. Overall, we concluded that functional syndromes are population‐specific, and that both adaptive and nonadaptive processes are shaping functional traits. Given the pivotal role of functional traits, differences in functional syndromes within species provide interesting perspectives regarding the role of intraspecific diversity for ecosystem functioning.

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The impacts of heat stress on animal cognition: Implications for adaptation to a changing climate

Soravia

Ashton

Thornton

et al. 2021

WIREs Climate Change

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With global surface air temperature rising rapidly, extensive research effort has been dedicated to assessing the consequences of this change for wildlife. While impacts on the phenology, distribution, and demography of wild animal populations are well documented, the impact of increasing temperature on cognition in these populations has received relatively little attention. Cognition encompasses the mental mechanisms that allow individuals to process information from the surrounding environment, respond accordingly, and flexibly adjust behavior. Hence, it is likely to be a key factor in allowing animals to adjust adaptively to climate change. Captive studies show that heat stress can negatively affect cognitive performance not only in the short‐term but also in the long‐term, by altering cognitive development at early life stages. Field studies indicate that cognitive performance may affect survival and reproductive success. However, the link between heat stress, cognition, and fitness in wild animals has yet to be formally established. We propose a comprehensive research framework for the collection of robust empirical datasets on heat stress and cognitive performance in the wild. We then suggest how knowledge of heat stress impacts on cognitive performance could be applied to population viability models and wildlife management actions. We believe that a joint research effort encompassing the fields of thermal physiology, behavioral ecology, comparative cognition, and conservation science, is essential to provide timely mitigation measures against the potential impacts of climate change on wildlife. This article is categorized under: Climate, Ecology, and Conservation > Observed Ecological Changes

show abstract

Ecophysiological patterns of distribution and behavior of freshwater fish in thermal gradients

Cited by 25 publications

References 46 publications

Temperature preferences of three maraena whitefish ( Coregonus maraena ) size classes under aquaculture conditions

Temperature preferences of three maraena whitefish ( Coregonus maraena ) size classes under aquaculture conditions

Variability of functional traits and their syndromes in a freshwater fish species (Phoxinus phoxinus): The role of adaptive and nonadaptive processes

The impacts of heat stress on animal cognition: Implications for adaptation to a changing climate

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