The effect of heterospecific and conspecific competition on inter-individual differences in tungara frog tadpole (<i>Engystomops pustulosus</i>) behavior

Beyts, Cammy; Cella, Maddalena; Colegrave, Nick; Downie, R. S.; Martin, Julien G. A.; Walsh, Patrick T.

doi:10.1093/beheco/arac109

Cited by 4 publications

(2 citation statements)

References 96 publications

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“…[ 47 ] Armadillidium vulgare common pill bug Isopoda Beyts et al . [ 48 ] Engystomops pustulosus tungara frog Amphibia Biro and Adriaenssens [ 10 ] Gambusia holbrooki eastern mosquitofish Actinopterygii Brand et al . [ 49 ] Lampropholis delicata delicate skink Reptilia Brand et al .…”

Section: Methodsmentioning

confidence: 99%

Phylogenetic meta-analysis reveals system-specific behavioural type–behavioural predictability correlations

Horváth,

Garamszegi,

Herczeg

2023

R. Soc. open sci.

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The biological significance of behavioural predictability (environment-independent within-individual behavioural variation) became accepted recently as an important part of an individual's behavioural strategy besides behavioural type (individual mean behaviour). However, we do not know how behavioural type and predictability evolve. Here, we tested different evolutionary scenarios: (i) the two traits evolve independently (lack of correlations) and (ii) the two traits' evolution is constrained (abundant correlations) due to either (ii/a) proximate constraints (direction of correlations is similar) or (ii/b) local adaptations (direction of correlations is variable). We applied a set of phylogenetic meta-analyses based on 93 effect sizes across 44 vertebrate and invertebrate species, focusing on activity and risk-taking. The general correlation between behavioural type and predictability did not differ from zero. Effect sizes for correlations showed considerable heterogeneity, with both negative and positive correlations occurring. The overall absolute (unsigned) effect size was high (Zr = 0.58), and significantly exceeded the null expectation based on randomized data. Our results support the adaptive scenario: correlations between behavioural type and predictability are abundant in nature, but their direction is variable. We suggest that the evolution of these behavioural components might be constrained in a system-specific way.

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Section: Methodsmentioning

confidence: 99%

Phylogenetic meta-analysis reveals system-specific behavioural type–behavioural predictability correlations

Horváth,

Garamszegi,

Herczeg

2023

R. Soc. open sci.

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“…Repeated social interactions with conspecifics (e.g. competition, help) during early development may also drive the differentiation of behaviour between individuals in a population ( Beyts et al 2023 ). All these results indicate that both the natural as well as the social environment during early life plays a key role in the development of behavioural profiles.…”

Section: Repeatabilitymentioning

confidence: 99%

Behavioural consistency across metamorphosis in a neotropical poison frog

Bégué,

Tschirren,

Peignier

et al. 2023

Evol Ecol

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Animals often show consistency in their behavioural repertoire across time and/or contexts that differs from other individuals of the same population, i.e. animal personality. We currently have quite an incomplete understanding of the factors that lead to behavioural traits remaining stable – or becoming decoupled – over an animal’s lifetime. In this study, we investigated the role of metamorphosis in the development of animal personality in a Neotropical poison frog, a species that undergoes drastic morphological and ecological changes during its development. We used lab-reared individuals of the brilliant-thighed poison frog Allobates femoralis to assess if consistent individual differences are already present at the tadpole stage, and if these differences are maintained throughout metamorphosis. We found evidence for two personality traits, exploration and boldness, already present in A. femoralis tadpoles. Despite the drastic changes in morphology, physiology, and habitat in the transition from tadpoles to metamorphs, personality traits persisted throughout metamorphosis, suggesting a physiological and/or genetic basis for the measured behavioural traits. We also found that exploration and boldness related behaviours were correlated with growth speed. Very bold and explorative individuals took fewer days until metamorphosis compared to very shy and non-explorative ones, which is in line with the concept of a Pace-of-Life Syndrome. These findings provide important insights into the proximate mechanisms that generate personality in species with complex life cycles.

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Predation Risk Experienced by Tadpoles Shapes Personalities Before but Not After Metamorphosis

Płaskonka,

Zaborowska,

Mikulski

et al. 2024

Ecology and Evolution

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Consistent inter‐individual differences in behaviour, that is, personalities, can emerge as a result of inter‐individual differences in ontogenetic experience, and predation risk is a potent one. As personalities develop over lifetime, however, they may also be broken by ontogenetic transitions of the individual. Here we first tested the hypothesis that consistent inter‐individual differences in larval behaviour arise under predation challenge, and are entangled with differences in body size. We then tested the hypothesis that adult behavioural type is related to body size rather than to larval behavioural phenotype. To test these hypotheses, we performed a longitudinal study following the development of about 50 moor frogs, Rana arvalis. We manipulated their larval and current environment, and recorded their behaviours repeatedly, under control conditions, invertebrate predators' chemical cues or in live predator presence. Partially in line with our predictions, the ontogenetic experience of predator presence led to personality emergence in tadpoles, yet their behaviour was not explained by their body size. This pattern was lost over metamorphosis. According to predictions, pre‐adult moor frog behaviour was affected by their body size—time to exit shelter was shorter in larger frogs—but neither by their behaviour as tadpoles nor by their larval environment, that is, tadpole predator‐exposure experience. Our results show that individual behavioural tendencies can be well decoupled between prior and post metamorphosis, which adds to the growing empirical evidence supporting adaptive decoupling hypothesis.

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The effect of heterospecific and conspecific competition on inter-individual differences in tungara frog tadpole (Engystomops pustulosus) behavior

Cited by 4 publications

References 96 publications

Phylogenetic meta-analysis reveals system-specific behavioural type–behavioural predictability correlations

Phylogenetic meta-analysis reveals system-specific behavioural type–behavioural predictability correlations

Behavioural consistency across metamorphosis in a neotropical poison frog

Predation Risk Experienced by Tadpoles Shapes Personalities Before but Not After Metamorphosis

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