Author/Authors :
OTHMAN, MOHD SHAM Chulalongkorn University - Graduate School, National Center of Excellence for Environmental and Hazardous Waste Management (NCE-EHWM), Faculty of Science - Department of Biology, Thailand , OTHMAN, MOHD SHAM Universiti Kebangsaan Malaysia - Faculty of Health Sciences - Environmental Health Industrial Safety Program, Malaysia , KHONSUE, WICHASE Chulalongkorn University - Faculty of Science - Department of Biology, Thailand , KITANA, JIRARACH Chulalongkorn University - Faculty of Science - Department of Biology, Thailand , THIRAKHUPT, KUMTHORN Chulalongkorn University - Faculty of Science - Department of Biology, Thailand , ROBSON, MARK GREGORY Chulalongkorn University - National Center of Excellence for Environmental and Hazardous Waste Management (NCE-EHWM), Thai Fogarty International Training and Research in Environmental and Occupational Health Center, Thailand , ROBSON, MARK GREGORY The State University of New Jersey - School of Environmental and Biological Sciences, USA , KITANA, NOPPADON Chulalongkorn University - Faculty of Science - Department of Biology, Thailand
Abstract :
In this study, morphometric and gravimetric indices were used to determine the impact of cadmium exposure on a sentinel species. Scaling coefficient, condition factor (CF), hepatosomatic index (HSI), renosomatic index (RSI) and gonadosomatic index (GSI) were compared between rice frogs (Fejervarya limnocharis) exposed to different environmental cadmium levels. The result showed that frogs caught from the contaminated site had significantly higher CF (10.296), RSI (0.413) and female GSI (7.594) than frogs from the contaminated site (7.594, 0.380 and 1.594, respectively). For Scaling Coefficient and HSI, albeit being statistically insignificant, these indices showed a similar trend. On the other hand, the male GSI showed a reverse trend where frogs from contaminated site showed higher values than their counterpart from the reference site. However, the differences were not statistically significant. This research concluded that there is a relationship between cadmium contamination with morphometric and gravimetric indices. Therefore, it is suggested that the use of these data could give an idea on the effect of cadmium exposure on the rice frog
Keywords :
Fejervarya limnocharis , morphometric indices , gravimetric indices , cadmium , Tak Province
