10.5061/DRYAD.G59R413
Hlouskova, Monika
Masaryk University
Balogova, Monika
Academy of Sciences of the Czech Republic
Krsakova, Veronika
Masaryk University
Gvoždík, Lumír
Academy of Sciences of the Czech Republic
Data from: No trade-offs in interspecific interference ability and
predation susceptibility in newt larvae
Dryad
dataset
2019
Interspecific aggression
Lissotriton vulgaris
somatic growth
Aeshna cyanea
Ichthyosaura alpestris
2019-07-25T00:00:00Z
2019-07-25T00:00:00Z
en
https://doi.org/10.1002/ece3.4465
12591 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Coexistence of species with similar requirements is allowed, among others,
through trade-offs between competitive ability and other ecological
traits. Although interspecific competition is based on two mechanisms,
exploitation of resources and physical interference, trade-off studies
largely consider only species’ ability to exploit resources. Using a
mesocosm experiment, we examined the trade-off between interference
competition ability and susceptibility to predation in larvae of two newt
species, Ichthyosaura alpestris and Lissotriton vulgaris. In the presence
of heterospecifics, L. vulgaris larvae slowed somatic growth and
developmental rates, and experienced a higher frequency of injuries than
in conspecific environments which suggests asymmetrical interspecific
interference. During short-term predation trials, L. vulgaris larvae
suffered higher mortality than I. alpestris. Larvae of the smaller
species, L. vulgaris, had both lower interference and antipredator
performance than the larger I. alpestris, which suggests a lack of
trade-off between interference competition ability and predator
susceptibility. We conclude that interference competition may produce a
positive rather than negative relationship with predation susceptibility,
which may contribute to the elimination of subordinate species from common
habitats.
Interspecific competition between larvae of two newt speciesThe influence
of heterospecific interactions on initial total length (mean per tank),
final total length, somatic growth rate, final developmental stage,
proportion of injured individuals (damaged tail fins or missing limbs),
and proportion survived in larvae of two newt species, Ichthyosaura
alpestris and Lissotriton
vulgaris.Hlouskova_et_al_competition.txtSusceptibility to predation in
larvae of two newt speciesProportion of injured and killed individuals
after 24 h exposure to a predator (dragonfly larva) in two newt
species.Hlouskova_et_al_predation.txt