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Temporal and spatial differentiation in microhabitat use: Implications for reproductive isolation and ecological niche specification

Title
Temporal and spatial differentiation in microhabitat use: Implications for reproductive isolation and ecological niche specification
Authors
Borzee, AmaelKim, Jun YoungDa Cunha, Marina Andrade MartinsLee, DonggeunSin, EunchongOh, SunminYi, YoonjungJang, Yikweon
Ewha Authors
장이권
SCOPUS Author ID
장이권scopus
Issue Date
2016
Journal Title
INTEGRATIVE ZOOLOGY
ISSN
1749-4877JCR Link1749-4869JCR Link
Citation
vol. 11, no. 5, pp. 375 - 387
Keywords
harmonic direction findinghylid treefrogpre-mating isolation mechanismsspatial isolationtemporal isolation
Publisher
WILEY-BLACKWELL
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Niche differentiation enables ecologically similar species to coexist by lessening competition over food and/or shelters and may be critical for reproductive isolation between closely related species in close proximity. Because no extra traits need to evolve, spatial and temporal differentiation may readily take place to complement other isolating mechanisms. Two closely related treefrog species occur together in Korea: the endangered Hyla suweonensis and the widespread Hyla japonica. Advertisement calls are differentiated, but it is unclear whether call difference is sufficient for reproductive isolation. We tracked individuals of both species to study fine-scale differentiation in microhabitat use in the diel cycle of the breeding season using a harmonic direction finder. tracking male movement patterns of both species revealed spatial and temporal differentiation in microhabitat use for calling and resting during the breeding season. Males of both H. suweonensis and H. japonica occurred in all 5 microhabitats identified in this study: rice paddy, ground, buried, grass and bush. Both treefrog species showed general similarities in calling from rice paddies and resting in grass and bush. However, H. suweonensis moved into rice paddies and produced advertisement calls 3 h earlier than H. japonica. These differences likely minimize contact between the species and provide an additional isolating mechanism. In addition, the activity of H. suweonensis may be contributing to the decline of this species, as resting in grass would increase dangers from predatory birds and habitat disturbance.
DOI
10.1111/1749-4877.12200
Appears in Collections:
자연과학대학 > 생명과학전공 > Journal papers
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