Cadmium Accumulation in Two Populations of Rice Frogs (<Emphasis Type="Italic">Fejervarya limnocharis</Emphasis>) Naturally Exposed to Different Environmental Cadmium Levels |
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| Authors: | Mohd Sham Othman Wichase Khonsue Jirarach Kitana Kumthorn Thirakhupt Mark Gregory Robson and Noppadon Kitana |
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| Institution: | (1) International Postgraduate Programs in Environmental Management, Graduate School, Chulalongkorn University, Bangkok, Thailand;(2) National Center of Excellence for Environmental and Hazardous Waste Management (NCE-EHWM), Chulalongkorn University, Bangkok, Thailand;(3) Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand;(4) Environmental Health Program, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia;(5) School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA;(6) Thai Fogarty International Training and Research in Environmental and Occupational Health Center, Chulalongkorn University, Bangkok, Thailand; |
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| Abstract: | Contaminant accumulation analysis is important in the study of sentinels. This research determined cadmium accumulation and
bioconcentration factors of whole organism, liver, kidney, ovary and testis of Fejervarya limnocharis exposed to different environmental cadmium levels. Frogs from contaminated sites had significantly higher hepatic (1.939 mg/kg),
renal (7.253 mg/kg) and testicular (1.462 mg/kg) cadmium than those from the reference sites (0.205, 0.783 and 0.379 mg/kg,
respectively). Cadmium accumulation was the highest during the late dry and early rainy seasons. If this species is used as
a sentinel for cadmium accumulation, the utilization of its whole organism, liver, kidney and testis is appropriate. |
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