Lin CAI,Jianping YU,Chunlan MAI and Wenbo LIAO.The Effects of Prey Items Diversity and Digestible Materials in Stomach on Digestive Tract Length in Hylarana guentheri[J].Asian Herpetological Research(AHR),2020,11(2):155-160.[doi:10.16373/j.cnki.ahr.190043]
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The Effects of Prey Items Diversity and Digestible Materials in Stomach on Digestive Tract Length in Hylarana guentheri
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

2020 VoI.11 No.2
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The Effects of Prey Items Diversity and Digestible Materials in Stomach on Digestive Tract Length in Hylarana guentheri
Lin CAI1 Jianping YU234 Chunlan MAI234 and Wenbo LIAO234*
1 Clinical Medicine Department of TCM and Western Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan, China
2 Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637009, Sichuan, China
3 Key Laboratory of Artificial Propagation and Utilization in Anurans of Nanchong City, China West Normal University, Nanchong 637009, Sichuan, China
4 Institute of Eco-adaptation in Amphibians and Reptiles, China West Normal University, Nanchong 637009, Sichuan, China
altitude digestive tract digestible materials diversity of prey items Hylarana guentheri
Difference in environmental condition shapes variation in digestive tract length in evolutionary process. In particular, environmental difference results in variation in food resource among different habitats, and thereby affecting energy intake and energy allocation. The digestive theory predicts that animals foraging high indigestible materials of stomach contents can promote the increased gut dimensions. Here, we studied variation in digestive tract and gut length across six Hylarana guentheri populations at different altitudes and latitudes to test the prediction of the digestive theory. We found that altitude and latitude did not affect variation in relative size of digestive tract and gut among populations. We also found that relative size of digestive tract and gut did not be correlated with diversity of prey items, but negatively correlated with proportion of digestible materials. Our findings suggest that individuals foraging less digestible materials display relatively longer digestive tract than individuals foraging more digestible materials.


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Last Update: 2020-06-25