Some effects of a growth inhibitor, Diflubenzuron, on a crab Carcinus mediterraneus (Czerniavsky)
Cardinal, H.; Vernet, G.; Sinegre, G.
Comptes Rendus des Seances de la Societe de Biologie et de ses Filiales 173(6): 1105-1108
1980
ISSN/ISBN: 0037-9026 PMID: 6446363 Document Number: 166117
The effects of Diflubenzuron (N-4-chlorophenylamino carbonyl 2-6-difluorobenzamide) were tested, on a common crab of the Languedocian coasting ponds: Carcinus mediterraneus (Czerniavsky). Seawater was contaminated at two concentrations: 0.2 and 0.02 ppm. This insecticide enhances the mortality with increasing concentrations and causes a mortality at molting that, perhaps, results of alterations in the formation of the new exoskeleton. These effects on the cuticle look like those found in contaminated insects: the absence of resorption of the old integument is added to malformations in the synthesis of the new exocuticle.