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No reproductive character displacement in male advertisement signals of Hyla japonica in relation to the sympatric H. suweonensis

Title
No reproductive character displacement in male advertisement signals of Hyla japonica in relation to the sympatric H. suweonensis
Authors
Park S.Jeong G.Jang Y.
Ewha Authors
장이권정길상
SCOPUS Author ID
장이권scopus
Issue Date
2013
Journal Title
Behavioral Ecology and Sociobiology
ISSN
0340-5443JCR Link
Citation
vol. 67, no. 8, pp. 1345 - 1355
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Reproductive interaction between closely related taxa may leave a distinctive signature in which populations of interacting taxa are more dissimilar in sympatry than in allopatry. An ideal condition for such a pattern of reproductive character displacement (RCD) may occur when a population has limited gene flow and experiences strong selection pressure, exerted by an interacting taxon in areas of sympatry. In Korea, there are two closely related treefrog species: Hyla japonica, which is distributed widely throughout the country, and Hyla suweonensis, which occurs sympatrically in a narrow strip of western coastal plains. H. suweonensis is only found within the distribution of H. japonica. These two species have a similar single-note call structure. Here, we tested the possibility of RCD in H. japonica by examining geographic variation in advertisement calls. Although means of temporal and spectral characters were significantly different between the two species, sympatric populations of H. japonica and H. suweonensis overlapped in distributions of most characters. Furthermore, allopatric and sympatric H. japonica populations did not differ in all call characters. Weak genetic differentiation between sympatric and allopatric populations of H. japonica implied either substantial gene flow or recent genetic isolation. Possible explanations for no RCD in male advertisement calls of H. japonica include a difference in fine temporal characteristics between the two species, migration between sympatric and allopatric localities in H. japonica, RCD in female preferences in H. japonica, and weak selection pressure by H. suweonensis. © 2013 Springer-Verlag Berlin Heidelberg.
DOI
10.1007/s00265-013-1563-0
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자연과학대학 > 생명과학전공 > Journal papers
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