Geographic morphological variation in parapatric Western Palearctic tree frogs, Hyla arborea and Hyla savignyi: are related species similarly affected by climatic conditions?
نویسندگان
چکیده
منابع مشابه
Range-Wide Sex-Chromosome Sequence Similarity Supports Occasional XY Recombination in European Tree Frogs (Hyla arborea)
In contrast with mammals and birds, most poikilothermic vertebrates feature structurally undifferentiated sex chromosomes, which may result either from frequent turnovers, or from occasional events of XY recombination. The latter mechanism was recently suggested to be responsible for sex-chromosome homomorphy in European tree frogs (Hyla arborea). However, no single case of male recombination h...
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Documenting and preserving the genetic diversity of populations, which conditions their long-term survival, have become a major issue in conservation biology. The loss of diversity often documented in declining populations is usually assumed to result from human disturbances; however, historical biogeographic events, otherwise known to strongly impact diversity, are rarely considered in this co...
متن کاملA key transcription cofactor on the nascent sex chromosomes of European tree frogs (Hyla arborea).
We show that MED15, a key component of the transcription complex Mediator, lies within the nonrecombining segment of nascent sex chromosomes in the male-heterogametic Hyla arborea. Both X and Y alleles are expressed during embryonic development and differ by three frame-preserving indels (eight amino acids in total) within their glutamine-rich central part. These changes have the potential to a...
متن کاملCharacterization of tree frog (Hyla arborea) calling ponds in western Switzerland
A tree frog (Hyla arborea) metapopulation in western Switzerland was studied during spring 2001. All potential calling ponds in an area of 350 km2 were searched for tree frog calling males. Twenty-nine out of 111 ponds sheltered between 1 and 250 callers. Most ponds were occupied by less than 12 males. Pond parameters were measured at three different levels using field analysis and a Geographic...
متن کاملPower output of sound-producing muscles in the tree frogs Hyla versicolor and Hyla chrysoscelis.
Sound-producing muscles provide the opportunity of studying the limits of power production at high contractile frequencies. We used the work loop technique to determine the power available from the external oblique muscles in two related species of North American gray tree frog, Hyla chrysoscelis and Hyla versicolor. These trunk muscles contract cyclically, powering high-intensity sound product...
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ژورنال
عنوان ژورنال: Biological Journal of the Linnean Society
سال: 2008
ISSN: 0024-4066,1095-8312
DOI: 10.1111/j.1095-8312.2008.01056.x