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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Acknowledgments
This research is part of a graduate research project titled “Using the Rice Frog (Fejervarya limnocharis) as Sentinel Species for Cadmium Contamination in Tak Province, Thailand”. Financial support of this work was obtained from the National Center of Excellence for Environmental and Hazardous Waste Management (NCE-EHWM), the 90th Anniversary of Chulalongkorn University Fund and a new staff development grant (Ratchadaphiseksomphot Endowment Fund), and the MUA-TRF research grant (MRG4980120) to NK. An educational grant from the Malaysian Ministry of Higher Education to MSO is fully acknowledged. Additional support from NIH Fogarty ITREOH, D43 TW007849.
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Othman, M.S., Khonsue, W., Kitana, J. et al. Cadmium Accumulation in Two Populations of Rice Frogs (Fejervarya limnocharis) Naturally Exposed to Different Environmental Cadmium Levels. Bull Environ Contam Toxicol 83, 703–707 (2009). https://doi.org/10.1007/s00128-009-9845-y
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DOI: https://doi.org/10.1007/s00128-009-9845-y