RAPID POPULATION DIVERGENCE LINKED WITH CO‐VARIATION BETWEEN COLORATION AND SEXUAL DISPLAY IN STRAWBERRY POISON FROGS

@article{Rudh2011RAPIDPD,
  title={RAPID POPULATION DIVERGENCE LINKED WITH CO‐VARIATION BETWEEN COLORATION AND SEXUAL DISPLAY IN STRAWBERRY POISON FROGS},
  author={Andreas Rudh and Bj{\"o}rn Rogell and Olle H{\aa}stad and Anna Qvarnstr{\"o}m},
  journal={Evolution},
  year={2011},
  volume={65}
}
The likelihood of speciation is assumed to increase when sexually selected traits diverge together with ecologically important traits. According to sexual selection theory, the evolution of exaggerated display behavior is driven by increased mating success, but limited by natural selection, for example, through predation. However, the evolution of aposematic coloration (i.e., an ecologically important trait) could relieve the evolution of exaggerated display behavior from the bound of predation… 
Poison frog color morphs express assortative mate preferences in allopatry but not sympatry
TLDR
The strawberry poison frog (Oophaga pumilio) displays extreme color polymorphism in and around the young Bocas del Toro archipelago, and in a transition zone between red and blue allopatric lineages, female preferences diverged along with coloration, and whether any divergent preferences persist in a zone of sympatry is highlighted.
Cryptic female Strawberry poison frogs experience elevated predation risk when associating with an aposematic partner
TLDR
It is found that the estimated survival time of a cryptic frog was reduced when associating with an aposematic partner, suggesting that predation may act as a direct selective force on female choice, favoring evolution of color assortative mating that, in turn, may strengthen the divergence in coloration that natural selection has generated.
An Analysis of Predator Selection to Affect Aposematic Coloration in a Poison Frog Species
TLDR
It is concluded that conspicuousness honestly indicates toxicity to avian predators and the different coloration patterns among populations of strawberry poison frogs in combination with behavior and toxicity might integrate into equally efficient anti-predator strategies depending on local predation and other ecological factors.
Mating status correlates with dorsal brightness in some but not all poison frog populations
TLDR
Overall the results imply that brightness differences among individuals of the same color morph may actually affect reproductive success in some populations of strawberry poison frogs.
Interacting selection diversifies warning signals in a polytypic frog: an examination with the strawberry poison frog
TLDR
It is found that indeed the population representative of the common mainland phenotype (Almirante) represents an intermediate level of both toxicity and conspicuousness, and that derived Bocas del Toro populations vary in each of those components in directions predicted by the proposed scenarios.
Sexual dimorphism and intra-populational colour pattern variation in the aposematic frog Dendrobates tinctorius
TLDR
Against the theoretical predictions of aposematism, it is found that there is enormous intra-populational variation in colour patterns and that these also differ between the sexes: males have a yellower dorsum and bluer limbs than females.
The evolution of polymorphism in the warning coloration of the Amazonian poison frog Adelphobates galactonotus
TLDR
The relative contributions of selection, geographic isolation, and random genetic drift to the evolution of aposematic color polymorphism in the poison frog Adelphobates galactonotus, distributed throughout eastern Brazilian Amazonia are evaluated.
Coloration in the polymorphic frog Oophaga pumilio associates with level of aggressiveness in intraspecific and interspecific behavioral interactions
TLDR
It is suggested that coloration in O. pumilio is a good indicator of aggressiveness that associates with the outcome of intraspecific and some interspecific behavioral male–male interactions, providing support for a positive association among anti-predator traits, agonistic behavior, and dominance in both intraspescific and interspecific, intraguild interactions.
Population expansion, isolation and selection: novel insights on the evolution of color diversity in the strawberry poison frog
TLDR
The results support a major role for recent population expansion and reduced gene flow (from isolation on islands) in the diversification of color across populations.
Geographic variation in sexual signals and behaviour in two species of poison frogs
TLDR
The genetic-geographic population structure, variation in advertisement calls, and coupled divergence in colour pattern and behaviour were strikingly similar in the two species.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 80 REFERENCES
Phenotypic and genetic divergence in three species of dart-poison frogs with contrasting parental behavior.
TLDR
It is demonstrated that the color and pattern variation among populations of D. pumilio is not matched by higher levels of mitochondrial DNA sequence divergence relative to P. lugubris or Minyobates sp.
SEXUAL SELECTION CAN INCREASE THE EFFECT OF RANDOM GENETIC DRIFT—A QUANTITATIVE GENETIC MODEL OF POLYMORPHISM IN OOPHAGA PUMILIO, THE STRAWBERRY POISON‐DART FROG
  • S. Tazzyman, Y. Iwasa
  • Biology, Medicine
    Evolution; international journal of organic evolution
  • 2010
TLDR
It is suggested that coupled drift is a novel theoretical process that could have a role linking sexual selection with speciation both in O. pumilio, and perhaps more generally.
Sexual dimorphism and directional sexual selection on aposematic signals in a poison frog
TLDR
The results show that sexual selection should not be ignored in studies of aposematic evolution and document sexual dimorphism in vertebrate warning coloration.
Sexual selection and natural selection in bird speciation
TLDR
It is concluded that perhaps the main role for sexual selection in speciation is in generating differences between populations in traits, and sexual selection is likely to have an important role in generating premating isolating mechanisms throughout an adaptive radiation.
ASSORTATIVE MATING IN POISON-DART FROGS BASED ON AN ECOLOGICALLY IMPORTANT TRAIT
TLDR
This study provides a rare example of one phenotypic trait affecting both ecological viability and nonrandom mating, indicating that mating/ecology pleiotropy is plausible in wild populations, particularly for organisms that are aposematically colored and visually orienting.
Genetic structure is correlated with phenotypic divergence rather than geographic isolation in the highly polymorphic strawberry poison‐dart frog
TLDR
The results show that phenotypic differences can result in sexual and natural selection against non‐native phenotypes, and these forces lead to genetic isolation between different colour morphs in the wild, presenting a potential case of incipient speciation through selection.
Dynamics in the evolution of sexual traits: losses and gains, radiation and convergence in yellow wagtails (Motacilla flava)
We analyse patterns of genetic diversity and song complexity in the Palaearctic yellow wagtail (Motacilla flava), a highly polytypic species complex. Mitochondrial and nuclear DNA show that the
Rapid Color Evolution in an Aposematic Species: A Phylogenetic Analysis of Color Variation in the Strikingly Polymorphic Strawberry Poison-dart Frog
TLDR
The results indicate that shifts incoloration in aposematic species may occur more regularly than predicted and that convergence in coloration may indicate that similar forces are repeatedly driving these shifts.
Non‐gradual variation in colour morphs of the strawberry poison frog Dendrobates pumilio: genetic and geographical isolation suggest a role for selection in maintaining polymorphism
TLDR
The possibility that the observed variation in colour morphs is a consequence of a combination of local variation in both natural selection on an aposematic signal towards visual predators and sexual selection generated by colour morph‐specific mate preferences is discussed.
Evidence for selection on coloration in a Panamanian poison frog : a coalescent-based approach
TLDR
This study provides the first quantitative support for the claim that strong diversifying selection underlies colour variation in the strawberry poison frog.
...
1
2
3
4
5
...