Ovarian activity of Drosophila melanogaster meigen (diptera), during a chronic intoxication with four fungicides: Anatomical and cytological study |
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Authors: | D. Marchal‐Ségault G. Laugé |
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Affiliation: | Laboratoire Reproduction, Développement de l'Insecte , Université de Paris Sud , Bdt. 445, URA CNRS 1491, Orsay Cedex, 91405, France |
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Abstract: | Abstract Two types of reactions were observed on the alteration of Drosophila vitellogenesis by the four fungicides used in this study. Dithane®M45 resulted in stimulation associated with egg retention. However, the other three fungicides (Benlate®, Bouillie bordelaise® and Euparène®) resulted in inhibition to a varying degree. Although the inhibition was comparatively limited due to Benlate® it induced an egg retention. The inhibition was very high due to Bouillie bordelaise® and Euparène®. With Bouillie bordelaise® an egg retention occured together with the reduction of vitellogenesis and caused an increase in the rate of the follicle resorption. The latter depended on the duration of treatment. With Euparène®, no egg retention was observed and the toxicity was only noticed on vitellogenesis. |
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Keywords: | fungicides chronic intoxication drosophila ovary anatomy cytology |
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