| genetic divergence and speciation in lowland and montane peruvian poison frogs. | amazonia is famous for high biodiversity, and the highlands of the transition zone between the andes and the lowlands of the amazon basin show particularly high species diversity. hypotheses proposed to explain the high levels of diversity in the highlands include repeated parapatric speciation across ecological gradients spanning the transition zone, repeated allopatric speciation across geographic barriers between the highlands and lowlands, divergence across geographic barriers within the tra ... | 2006 | 16815043 |
| reproductive isolation related to mimetic divergence in the poison frog ranitomeya imitator. | in a mimetic radiation--when a single species evolves to resemble different model species--mimicry can drive within-species morphological diversification, and, potentially, speciation. while mimetic radiations have occurred in a variety of taxa, their role in speciation remains poorly understood. we study the peruvian poison frog ranitomeya imitator, a species that has undergone a mimetic radiation into four distinct morphs. using a combination of colour-pattern analysis, landscape genetics and ... | 2014 | 25158807 |
| a key ecological trait drove the evolution of biparental care and monogamy in an amphibian. | linking specific ecological factors to the evolution of parental care pattern and mating system is a difficult task of key importance. we provide evidence from comparative analyses that an ecological factor (breeding pool size) is associated with the evolution of parental care across all frogs. we further show that the most intensive form of parental care (trophic egg feeding) evolved in concert with the use of small pools for tadpole deposition and that egg feeding was associated with the evolu ... | 2010 | 20180700 |
| molecular phylogenetic evidence for a mimetic radiation in peruvian poison frogs supports a müllerian mimicry hypothesis. | examples of müllerian mimicry, in which resemblance between unpalatable species confers mutual benefit, are rare in vertebrates. strong comparative evidence for mimicry is found when the colour and pattern of a single species closely resemble several different model species simultaneously in different geographical regions. todemonstrate this, it is necessary to provide compelling evidence that the putative mimics do, in fact, form a monophyletic group. we present molecular phylogenetic evidence ... | 2001 | 11747559 |
| tactical reproductive parasitism via larval cannibalism in peruvian poison frogs. | we report an unusual example of reproductive parasitism in amphibians. dendrobates variabilis, an amazonian poison frog, oviposits at the surface of the water in small pools in plants and deposits tadpoles within the pools. tadpoles are highly cannibalistic and consume young tadpoles if they are accessible. deposition of embryos and tadpoles in the same pool is common. genetic analyses indicate that tadpoles are frequently unrelated to embryos in the same pool. a pool choice experiment in the fi ... | 2009 | 19042178 |
| divergence in parental care, habitat selection and larval life history between two species of peruvian poison frogs: an experimental analysis. | changes in the nature of the ecological resources exploited by a species can lead to the evolution of novel suites of behaviours. we identified a case in which the transition from large pool use to the use of very small breeding pools in neotropical poison frogs (family dendrobatidae) is associated with the evolution of a suite of behaviours, including biparental care (from uniparental care) and social monogamy (from promiscuity). we manipulated breeding pool size in order to demonstrate experim ... | 2008 | 18811668 |
| speciation with introgression: phylogeography and systematics of the ameerega petersi group (dendrobatidae). | the tropical andes contains exceptionally high diversity, much of it arising within the quaternary period. the complex geology of the andes and paleoclimate fluctuations within the quaternary suggest complex speciation scenarios. this, in turn, has contributed to idiosyncratic speciation modes among shallowly diverged amazonian taxa. many relationships among these taxa remain poorly resolved. here we use a sequence capture approach, ultraconserved elements (uces), to address the phylogenetic rel ... | 2019 | 31125660 |