Context dependency of trait repeatability and its relevance for management and conservation of fish populations

Killen, Shaun S.; Adriaenssens, Bart; Marras, Stefano; Claireaux, Guy; Cooke, Steven J.

doi:10.1093/conphys/cow007

Cited by 107 publications

(138 citation statements)

References 116 publications

(195 reference statements)

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“…Furthermore, our results on the effect of elevated P CO2 levels on the repeatability of relative lateralization open up the question as to whether or not other behavioural traits affected by elevated P CO2 in various marine organisms Leduc et al, 2013;Nagelkerken and Munday, 2016) may also lose their repeatability after exposure to elevated P CO2 . As advocated by Killen et al, (2016), our current lack of knowledge regarding how trait repeatability is affected by elevated P CO2 levels is a crucial factor limiting our ability to predict how aquatic organisms will evolve in response to ocean acidification.…”

Section: Discussionmentioning

confidence: 99%

“…Repeatable variables were defined as those with a significant positive correlation between the first and second trial (Killen et al, 2016;Kluen and Brommer, 2013). Lateralization, t D , t M and RF before and after treatment were compared using a paired-t-test (Wilcoxon test for non-normal distribution).…”

Section: Statisticsmentioning

confidence: 99%

“…The temporal stability of a phenotypic trait within individuals relative to differences in that trait among individuals is known as trait repeatability and it is an important characteristic that is receiving increasing attention (Bell et al, 2009;Killen et al, 2016). Most previous studies on repeatability have been carried out within the context of evolutionary processes in ecology.…”

Section: Introductionmentioning

confidence: 99%

“…Most previous studies on repeatability have been carried out within the context of evolutionary processes in ecology. However, as argued by Killen et al (2016), the extent to which environmental variables will affect trait repeatability (i.e. across-context repeatability) will play a fundamental role in the plastic responses of species to climate change.…”

Section: Introductionmentioning

confidence: 99%

“…Previous work has shown that environmental factors can affect trait repeatability in both marine (Briffa and Greenaway, 2011) and terrestrial organisms (Brommer, 2013). However, little is known about how trait repeatability is affected by elevated P CO2 levels (Killen et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effects of elevated carbon dioxide and temperature on locomotion and the repeatability of lateralization in a keystone marine mollusc

Domenici

Torres

Manríquez³

2017

Journal of Experimental Biology

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Recent work has shown that the behaviour of marine organisms can be affected by elevated P CO2 , although little is known about the effect of multiple stressors. We therefore investigated the effect of elevated P CO2 and temperature on locomotion and behaviour during prey searching in the marine gastropod Concholepas concholepas, a predator characteristic of the southeastern Pacific coast. Movement duration, decision time, route finding and lateralization were measured using a T-maze tank with a prey positioned behind a barrier. Four treatments, representing present day and near-future scenarios of ocean acidification and warming were used in rearing the individuals for 6 months. Regardless of the treatment, no significant differences were found in relative and absolute lateralization before and after exposure for 6 months. However, relative lateralization was not repeatable for animals tested after 6 months at elevated P CO2 at both experimental temperatures, whereas it was repeatable in individuals kept at the present day level of P CO2 . We suggest that these effects may be related to a behavioural malfunction caused by elevated P CO2 . Movement duration, decision time and route finding were not repeatable. However, movement duration and decision time increased and route finding decreased in elevated P CO2 (at 15°C), suggesting that elevated P CO2 has negative effects on the locomotor and sensory performance of C. concholepas in the presence of a prey odour, thereby decreasing their ability to forage efficiently.

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Section: Discussionmentioning

confidence: 99%

Section: Statisticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of elevated carbon dioxide and temperature on locomotion and the repeatability of lateralization in a keystone marine mollusc

Domenici

Torres

Manríquez³

2017

Journal of Experimental Biology

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Conservation implications of a lack of relationship between baseline glucocorticoids and fitness in a wild passerine

Madliger

Love

2016

Ecological Applications

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The application of physiological measures to conservation monitoring has been gaining momentum and, while a suite of physiological traits are available to ascertain disturbance and condition in wildlife populations, glucocorticoids (i.e., GCs; cortisol and corticosterone) are the most heavily employed. The interpretation of GC levels as sensitive indicators of population change necessitates that GCs and metrics of population persistence are linked. However, the relationship between GCs and fitness may be highly context-dependent, changing direction, or significance, depending on the GC measure, fitness metric, life history stage, or other intrinsic and extrinsic contexts considered. We examined the relationship between baseline plasma corticosterone (CORT) levels measured at two periods of the breeding season and three metrics of fitness (offspring quality, reproductive output, and adult survival) in female Tree Swallows (Tachycineta bicolor). Specifically, we investigated whether (1) a relationship between baseline CORT metrics and fitness exists in our population, (2) whether the inclusion of energetic contexts, such as food availability, reproductive investment, or body mass, could alter or improve the strength of the relationship between CORT and fitness, and (3) whether energetic contexts could better predict fitness compared to CORT metrics. Importantly, we investigated these relationships in both natural conditions and under an experimental manipulation of foraging profitability (feather clipping) to determine the influence of an environmental constraint on GC-fitness relationships. We found a lack of relationship between baseline CORT and both short- and long-term metrics of fitness in control and clipped birds. In contrast, loss in body mass over reproduction positively predicted reproductive output (number of chicks leaving the nest) in control birds; however, the relationship was characterized by a low R (5%), limiting the predictive capacity, and therefore the application potential, of such a measure in a conservation setting. Our results stress the importance of ground-truthing GC-fitness relationships and indicate that baseline GCs will likely not be easily employed as conservation biomarkers across some species and life history stages. Given the accumulating evidence of temporally dynamic, inconsistent, and context-dependent GC-fitness relationships, placing effort towards directly measuring fitness traits, rather than plasma GC levels, will likely be more worthwhile for many conservation endeavours.

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Individual behavioral variation reflects personality divergence in the upcoming model organism Nothobranchius furzeri

Thoré

Steenaerts

Philippe

et al. 2018

Ecology and Evolution

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In the animal kingdom, behavioral variation among individuals has often been reported. However, stable among‐individual differences along a behavioral continuum—reflective of personality variation—have only recently become a key target of research. While a vast body of descriptive literature exists on animal personality, hypothesis‐driven quantitative studies are largely deficient. One of the main constraints to advance the field is the lack of suitable model organisms. Here, we explore whether N. furzeri could be a valuable model to bridge descriptive and hypothesis‐driven research to further unravel the causes, function and evolution of animal personality. As a first step toward this end, we perform a common garden laboratory experiment to examine if behavioral variation in the turquoise killifish Nothobranchius furzeri reflects personality divergence. Furthermore, we explore if multiple behavioral traits are correlated. We deliver “proof of principle” of personality variation among N. furzeri individuals in multiple behavioral traits. Because of the vast body of available genomic and physiological information, the well‐characterized ecological background and an exceptionally short life cycle, N. furzeri is an excellent model organism to further elucidate the causes and implications of behavioral variation in an eco‐evolutionary context.

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Context dependency of trait repeatability and its relevance for management and conservation of fish populations

Cited by 107 publications

References 116 publications

Effects of elevated carbon dioxide and temperature on locomotion and the repeatability of lateralization in a keystone marine mollusc

Effects of elevated carbon dioxide and temperature on locomotion and the repeatability of lateralization in a keystone marine mollusc

Conservation implications of a lack of relationship between baseline glucocorticoids and fitness in a wild passerine

Individual behavioral variation reflects personality divergence in the upcoming model organism Nothobranchius furzeri

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