2020
DOI: 10.1093/biolinnean/blaa191
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Does the spatial sorting of dispersal traits affect the phenotype of the non-dispersing stages of the invasive frogXenopus laevisthrough coupling?

Abstract: In amphibians, spatial sorting progressively enhances the dispersal capacities of dispersing stages in expanding populations but may enhance or limit the performance of the earlier non-dispersing stages. Phenotypic traits of non-dispersing tadpoles and metamorphs can be coupled, through carry-over effects and trade-offs, or decoupled to dispersal traits in adults. We used the globally invasive amphibian, Xenopus laevis, to examine whether spatial sorting of adult phenotypes affects the phenotype of larval stag… Show more

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Cited by 7 publications
(7 citation statements)
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“…Yet, our study suggests that any adult body size differences are not driven by innate differences in tadpole growth rate, and it is unclear how they arose in adults (e.g., due to environmental factors such as food, due to phenotypic plasticity or due to directional selection for smaller or larger adult body sizes). In another successful amphibian invader, the African clawed frog (Xenopus laevis), Kruger et al (2021) showed that despite differences in adult body sizes between the core and periphery of the species' invasive distribution in France, the tadpoles did not show significant differences in growth rates when raised in a common garden experiment, indicating the decoupling of traits between life stages (but see Phillips 2009 for coupling of growth rate across larval and juvenile stages in cane toads, Rhinella marina). The decoupling of traits might also be a potential driver for the apparent similarities in growth rates of guttural toad tadpoles.…”
Section: Modelmentioning
confidence: 99%
“…Yet, our study suggests that any adult body size differences are not driven by innate differences in tadpole growth rate, and it is unclear how they arose in adults (e.g., due to environmental factors such as food, due to phenotypic plasticity or due to directional selection for smaller or larger adult body sizes). In another successful amphibian invader, the African clawed frog (Xenopus laevis), Kruger et al (2021) showed that despite differences in adult body sizes between the core and periphery of the species' invasive distribution in France, the tadpoles did not show significant differences in growth rates when raised in a common garden experiment, indicating the decoupling of traits between life stages (but see Phillips 2009 for coupling of growth rate across larval and juvenile stages in cane toads, Rhinella marina). The decoupling of traits might also be a potential driver for the apparent similarities in growth rates of guttural toad tadpoles.…”
Section: Modelmentioning
confidence: 99%
“…the one with the lowest AIC, is indicated in bold. ( Kruger et al, 2021). It remains to be tested whether adaptive shifts in tadpole optimum performance temperatures observed in this study are reflected in adult X. laevis.…”
Section: Discussionmentioning
confidence: 86%
“…Conversely, differential expression of boldness between adults but not tadpoles might be the result of decoupled evolution between life stages in Guttural Toads (Collet and Fellous 2019 ). Decoupling of traits has recently been shown in the invasive African Clawed Frog ( Xenopus laevis ; Kruger et al 2021 ). Adults from the periphery of the invasive range in France show a distinct dispersal-mediating phenotype compared to adults from the core (Louppe et al 2018 ; Padilla et al 2019 ).…”
Section: Discussionmentioning
confidence: 99%
“…Adults from the periphery of the invasive range in France show a distinct dispersal-mediating phenotype compared to adults from the core (Louppe et al 2018 ; Padilla et al 2019 ). However, when reared from the egg to the post-metamorphic frog, those differences were not apparent, indicating that differences in adult traits emerge well after metamorphosis (Kruger et al 2021 ). Similarly, in a previous study, we presented data indicating that adult Guttural Toads are larger in urban areas but did not find differences in growth rates of tadpoles when raised in a common garden environment (Mühlenhaupt et al 2021 ).…”
Section: Discussionmentioning
confidence: 99%