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| Content Provider | Springer Nature Link |
|---|---|
| Author | Suwanvecho, Udomlux Brockelman, Warren Y. |
| Copyright Year | 2011 |
| Abstract | We investigated the ecology and interspecific interactions of the two gibbon species (Hylobates lar and H. pileatus) that overlap in distribution within a narrow zone of contact in the headwaters of the Takhong River at Khao Yai National Park in central Thailand. The zone is about 10-km wide, with phenotypic hybrids comprising 6.5% of the adult population. We compared species with respect to diet, territory size, intra- and interspecific group encounters, and territory quality. The two gibbon species exploited the same types of resources within their territories despite variation in the relative abundance of food-plant species between territories. The gibbons were interspecifically territorial, and males of both species displayed aggressive behaviors at both intraspecific and interspecific territorial boundaries. There was no marked difference in the amount of overlap between territories of conspecific and heterospecific pairs of groups. Although the habitat was not homogeneous, territory quality did not vary significantly between species. The species have not diverged in habitat preference or in diet. Neither species dominated in interspecific encounters, and both were reproducing well in the contact zone. We analyzed the potential consequences of several types of interspecific interactions on individual dispersal options and on the structure of the contact zone. Interference competition through interspecific territoriality affects the dispersal of individuals into the range of the other species. In general, territorial competition coupled with limited hybridization leads to predictions of a narrow contact zone or parapatry between species; thus, behavioral and ecological interactions between species need to be considered as potential factors in explaining range borders of primate species. |
| Starting Page | 97 |
| Ending Page | 108 |
| Page Count | 12 |
| File Format | |
| ISSN | 00328332 |
| Journal | Primates |
| Volume Number | 53 |
| Issue Number | 1 |
| e-ISSN | 16107365 |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2011-11-30 |
| Publisher Place | Japan |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Interspecific territoriality Hylobates lar Hylobates pileatus Dispersal Hybrid zone Interspecific contact zone Animal Ecology Zoology Behavioural Sciences Evolutionary Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Animal Science and Zoology |
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