Publications

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combined effects of pesticides and trematode infections on hourglass tree frog polypedates cruciger.the impact of widespread and common environmental factors, such as chemical contaminants, on infectious disease risk in amphibians is particularly important because both chemical contaminants and infectious disease have been implicated in worldwide amphibian declines. here we report on the lone and combined effects of exposure to parasitic cercariae (larval stage) of the digenetic trematode, acanthostomum burminis, and four commonly used pesticides (insecticides: chlorpyrifos, dimethoate; herbic ...201626911919
effects of environmental contamination and acute toxicity of n-nitrate on early life stages of endemic arboreal frog, polypedates cruciger (blyth, 1852).this study investigated the potential toxic effects of environmentally relevant nitrate concentrations on development, growth, and mortality of early life stages of common hour-glass tree frog, polypedates cruciger. tadpoles from hatchlings through pre-adult were exposed to environmentally relevant nitrate concentrations detected in mirissa, sri lanka. newly hatched, external gill stage, and internal gill stage tadpoles were exposed to potassium nitrate for bioassay tests. no behavioral changes ...201729282476
the impact of elevated temperature and co2 on growth, physiological and immune responses of polypedates cruciger (common hourglass tree frog).amphibians are one of the most susceptible groups to climate change as their development occurs in aquatic environments or in microhabitats with high humidity. accordingly, our primary objective was to investigate the chronic physiological responses seen in early larval to adult stages of polypedates cruciger (common hourglass tree frog) to future climate change based on continuous exposure to elevated temperature and elevated co2 -induced low water ph. free-swimming and free-feeding tadpoles we ...202031956329
infection sequence alters disease severity-effects of the sequential exposure of two larval trematodes to polypedates cruciger tadpoles.multiple pathogens coexist in nature, and hence, host species often encounter several pathogens simultaneously. the sequence in which the host encounters the parasites influences interactions between parasites and host pathology. here, the effects of infection by two cercaria (larvae of trematodes) types, pleurolophocercous cercaria of acanthostomum burminis and a furcocercous cercaria, on the tadpoles of common hourglass tree frog (polypedates cruciger) were examined. ten days posthatch, tadpol ...201931236216
malformations and mortality in the asian common toad induced by exposure to pleurolophocercous cercariae (trematoda: cryptogonimidae).malformations and increased mortality due to infection by the digenetic trematode, riberioa ondatrae have been reported for many species of amphibians. severe malformations have also been reported in the common hourglass tree frog, polypedates cruciger induced by pleurolophocercous cercariae in sri lanka in addition to the changes in the behaviour, development and survival of the host. we exposed pre-limb bud stage tadpoles (gosner stages 25-26) of the asian common toad, duttaphrynus melanostict ...201323353759
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