Tonglei YU,Guifang YANG,Michael BUSAM and Yaohui DENG.Plasticity in Metamorphic Traits of Rice Field Frog (Rana limnocharis) Tadpoles: The Interactive Effects of Rearing Temperature and Food Level[J].Asian Herpetological Research(AHR),2016,7(4):265-270.[doi:10.16373/j.cnki.ahr.150062]
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Plasticity in Metamorphic Traits of Rice Field Frog (Rana limnocharis) Tadpoles: The Interactive Effects of Rearing Temperature and Food Level
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

2016 VoI.7 No.4
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Plasticity in Metamorphic Traits of Rice Field Frog (Rana limnocharis) Tadpoles: The Interactive Effects of Rearing Temperature and Food Level
Tonglei YU1* Guifang YANG1 Michael BUSAM2 and Yaohui DENG1
1 Department of Biology, College of Life Science, Xinyang Normal University, Xinyang 464000, Henan, China
2 College of Agriculture and Natural Resources, University of Maryland, College Park, MD 20742, USA
metamorphosis Rana limnocharis larval period phenotypic plasticity rearing temperature food level
In organisms with complex life cycles, such as amphibians, morphological variation is strongly influenced by environmental factors (e.g. temperature) and maternal effects (e.g. diet). Although temperature and food level exert a strong influence on larval growth, little is known about the interacting effects of these factors on age and size at metamorphosis. In this study, plasticity in growth rates, survival, larval period, and size at metamorphosis were examined in Rice field Frog (Rana limnocharis) under different combinations of rearing temperature and food level. Rearing temperature did not affect age at metamorphosis, but a significant interaction between temperature and food level revealed that of tadpoles feeding at a high food level, those reared at 32°C had a shorter length of larval period than those reared at 29°C or 26°C. Similarly, our results also showed high food level produced a larger growth rate and mass at metamorphosis at 32°C, but not at 29 and 26°C. Therefore, our results revealed that the effects of food level on larval growth and metamorphosis were highly dependent on developmental temperature.


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