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Diet and Food Choice of Trachypithecus francoisi in the Nonggang Nature Reserve, China

Author:
Qihai Zhou   Fuwen Wei   Ming Li   Chengming Huang and Bang Luo  


Journal:
International Journal of Primatology


Issue Date:
2006


Abstract(summary):

We studied the diet and food choice of 1 group of Fran莽ois’ langurs (Trachypithecus francoisi) from August 2003 to July 2004 in the Nonggang Nature Reserve, Guangxi province, China. The langurs consumed 90 plant species, including 14 unidentified species. Leaves constituted 52.8%of the diet (38.9%young leaves and 13.9%mature leaves). Fruits and seeds accounted for 17.2%and 14.2%, respectively. Flowers and other items—including petioles, stems, roots, and bark—contributed to 7.5%and 7.4%of the diet, respectively. The langur diet varied according to season. They fed on more young leaves from April to September. Consumption of seeds, petioles, and stems increased between October and March, when young leaves were scarce. The diet shift corresponded to higher dietary diversity during the young leaf-lean period. Though the langurs fed on many plant species, 10 species accounted for 62.2%of the diet, only 2 of which were among the 10 most common tree species in vegetation quadrants, and the percentage of feeding records on a plant species and the percentage of individuals of the species in vegetation quadrants does not correlate significantly. Fran莽ois’ langurs fed selectively, and they did not base their diet simply on the abundance of plant species in the habitat.


Page:
1441-1460


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