Organochlorine pesticides in the frog<i>rana ridibunda</i>from the fresh waters of northern Greece

Loumbourdis, N. S.

doi:10.1080/02772249709358517

Toxicological & Environmental Chemistry

1997

DOI: 10.1080/02772249709358517

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Organochlorine pesticides in the frograna ridibundafrom the fresh waters of northern Greece

N. S. Loumbourdis

Abstract: In this paper, the concentration of some organochlorine pesticides in the frog Rana ridibunda was investigated. The most abundant compound was DDE. The concentrations of pesticides detected in this study are low, probably because of their ban some 22 years ago. DDT, DDD and Aldrin have not been detected, most probably because of their degradation to more stable metabolites. Lindane has also not been detected, likely because of its rapid decomposition.

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Cited by 4 publications

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Liver Histopathologic Alterations in the Frog Rana ridibunda from a Small River of Northern Greece

Loumbourdis

2007

Arch Environ Contam Toxicol

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The various histopathologic alterations detected in the liver of the frog Rana ridibunda from a small river of Northern Greece were investigated. In the livers of the frogs collected from this river, there was an increase in the area occupied by melanomacrophages as well as an increase in their color intensity. Mild karyomegaly and polyploidy, together with solitary and focal accumulation of infiltrates (neutrophils and lymphocytes), was evident. Three different kinds of foci were detected basophilic focus, vacuolated focus, and a special type of focus with nodules surrounded by collagen. Some bile ducts were found to be filled with periodic acid schiff (PAS)-positive amorphous material mixed with cellular debris. In liver foci of dense connective tissue, with structures resembling bile ductuli, were detected. The latter finding supports the conclusion that this might be early holangiofibroma. Progressive fibrosis around bile ducts, which extended into the hepatic parenchyma, was obvious. Given that the river under study was previously characterized as being moderately to heavily polluted, it was concluded that a number of environmental factors, including heavy metals, might be responsible for these histopathologic alterations.

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Liver Histopathologic Alterations in the Frog Rana ridibunda from a Small River of Northern Greece

Loumbourdis

2007

Arch Environ Contam Toxicol

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DDT exposure of frogs: A case study from Limpopo Province, South Africa

2016

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Highlights Contaminants is suspected to play a part in amphibian declines worldwide  No POPs data in frogs from areas where DDT is used for malaria control  Quantifiable DDT was found in frog fat from an area where DDT is used  No testicular oocytes were found in any frog  Significant asymmetric testicular morphology in frogs from the sprayed area AbstractAmphibians are globally under pressure with environmental contaminants contributing to this. Despite caution aired more than 80 years ago of threats posed to amphibians by DDT spraying for disease vector control, no data have been published on concentrations or effects of DDT contamination in frogs from areas where DDT is actively sprayed to control the insect vectors of malaria. In this study, we sampled fat bodies of Xenopus laevis and X. muelleri naturally occurring in an area where indoor residual spraying of DDT is employed and from adjacent, non-sprayed, areas. ΣDDT concentrations ranged between

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Investigation of acute toxicity of cadmium chloride (CdCl2·H2O) metal salt and behavioral changes it causes on water frog (Rana ridibunda Pallas, 1771)

2003

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Organochlorine pesticides in the frograna ridibundafrom the fresh waters of northern Greece

Cited by 4 publications

References 11 publications

Liver Histopathologic Alterations in the Frog Rana ridibunda from a Small River of Northern Greece

Liver Histopathologic Alterations in the Frog Rana ridibunda from a Small River of Northern Greece

DDT exposure of frogs: A case study from Limpopo Province, South Africa

Investigation of acute toxicity of cadmium chloride (CdCl2·H2O) metal salt and behavioral changes it causes on water frog (Rana ridibunda Pallas, 1771)

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