Impact of endosulphan and cypermethrin mixture on amphibians under field use for biotech soya bean production Online publication date: Thu, 10-Dec-2009
by Maria Gabriela Agostini, Guillermo Sebastian Natale, Alicia Estela Ronco
International Journal of Environment and Health (IJENVH), Vol. 3, No. 4, 2009
Abstract: This study presents results at a local scale of the impact of pesticide aerial applications containing a mixture of endosulphan and cypermethrin on anurans assessed by means of field evaluations. Additionally, effects were compared with laboratory toxicity tests in standardised conditions. Field assessment with native population allowed the detection of dead anuran larvae of the species present in the stream of water after fumigation, in coincidence with the decrease in the frequency of live larvae (p < 0.01) from sampling nets. Cage experiments showed significant differences (p < 0.01) in anuran larvae survival before and after fumigations. Laboratory acute toxicity tests with endosulphan formulation demonstrated sublethal symptoms in Hypsiboas pulchellus larvae 24 h after initial exposure time. The 96 h LC-50 was 0.13 µg endosulphan/litre, which is over 1000 times lower than the cypermethrin LC-50 value. Endosulphan seems to be the insecticide responsible for the drastic effects on anuran larvae detected in the field during studied events.
Online publication date: Thu, 10-Dec-2009
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environment and Health (IJENVH):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email firstname.lastname@example.org