Geographic variation in the advertisement calls of Hyla eximia and its possible explanations
Autor: | Constantino Macías Garcia, María G. Méndez-Cárdenas, Valentina Islas-Villanueva, Ruth E. Rodríguez-Tejeda |
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Jazyk: | angličtina |
Rok vydání: | 2014 |
Předmět: |
Drainage basin
Hyla arenicolor lcsh:Medicine Biology General Biochemistry Genetics and Molecular Biology Divergence Genetic and geographic distances Acoustic interference Geographic variation Character displacement Hyla eximia geography geography.geographical_feature_category Animal Behavior Ecology General Neuroscience lcsh:R Advertising General Medicine biology.organism_classification Evolutionary Studies Tlalocohyla smithii Mate choice Genetic structure Advertisement calls General Agricultural and Biological Sciences Zoology |
Zdroj: | PeerJ, Vol 2, p e420 (2014) PeerJ |
ISSN: | 2167-8359 |
Popis: | Populations of species occupying large geographic ranges are often phenotypically diverse as a consequence of variation in selective pressures and drift. This applies to attributes involved in mate choice, particularly when both geographic range and breeding biology overlap between related species. This condition may lead to interference of mating signals, which would in turn promote reproductive character displacement (RCD). We investigated whether variation in the advertisement call of the mountain treefrog (Hyla eximia) is linked to geographic distribution with respect to major Mexican river basins (Panuco, Lerma, Balsas and Magdalena), or to coexistence with its sister (the canyon treefrog, Hyla arenicolor) or another related species (the dwarf treefrog, Tlalocohyla smithii). We also evaluated whether call divergence across the main river basins could be linked to genetic structure. We found that the multidimensional acoustic space of calls from two basins where H. eximia currently interacts with T. smithii, was different from the acoustic space of calls from H. eximia elsewhere. Individuals from these two basins were also distinguishable from the rest by both the phylogeny inferred from mitochondrial sequences, and the genetic structure inferred from nuclear markers. The discordant divergence of H. eximia advertisement calls in the two separate basins where its geographic range overlaps that of T. smithii can be interpreted as the result of two independent events of RCD, presumably as a consequence of acoustic interference in the breeding choruses, although more data are required to evaluate this possibility. |
Databáze: | OpenAIRE |
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