[1].Altitudinal Variation in Digestive Tract Lengh in Feirana quadranus[J].Asian Herpetological Research,2019,10(3):183-189.[doi:10.16373/j.cnki.ahr.180082]
 Chunlan MAI,Jin HUANG,Qin LIAO,et al.Altitudinal Variation in Digestive Tract Lengh in Feirana quadranus[J].Asian Herpetological Research(AHR),2019,10(3):183-189.[doi:10.16373/j.cnki.ahr.180082]

Altitudinal Variation in Digestive Tract Lengh in Feirana quadranus()

Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]



Altitudinal Variation in Digestive Tract Lengh in Feirana quadranus
Chunlan MAI123 Jin HUANG123 Qin LIAO123 Wenbo LIAO123* and Lixia ZHANG4*
1 Key Laboratory of Southwest China Wildlife Resources Conservation (Ministry of Education), China West Normal University, Nanchong 637009, Sichuan, China
2 Key Laboratory of Artificial Propagation and Utilization in Anurans of Nanchong City, China West Normal University, Nanchong 637009, Sichuan, China
3 Institute of Eco-adaptation in Amphibians and Reptiles, China West Normal University, Nanchong 637009, Sichuan, China
4 Department of Zoology, College of Life Sciences, Henan Normal University, Xinxiang 453007, China
altitude Feirana quadranus digestive tract physiology
Selective pressures favor variation in organ size in response to environmental changes and evolutionary process. In particular, changes in environmental temperature and rainfall at different altitudes often affect food resources, thereby mediating energy intake and allocation. The digestive tract provided a functional relationship between energy intake and allocation, of which gut morphology was associated with diet changes and food quality under different environments. Here we studied altitudinal variation in the digestive tract across four Feirana quadranus populations and tested the hypothesis that relative size of digestive tract should increase with increasing altitude. The results showed that although significant variation in length of the digestive tract was observed in females among populations, altitudinal variation in relative length of digestive tract or gut was non-significant. In addition, the digestive tract length was not correlated with temperature and precipitation across the four populations. Our findings suggest that individuals living in low-temperature and -precipitation populations at high altitudes did not display longer digestive tract than high temperature and precipitation populations at low altitudes, possibly because of small populations or sample sizes.


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更新日期/Last Update: 2019-09-25