Project:BB|212

Title
Mouthpart deformities in Chironomus riparius: a bioindication of sediment toxicity.
Acronym
 
URL
StartDate
1997-02-01
EndDate
2001-12-31
Amount
 

Abstract

Chironomids are a family belonging to the order of Diptera and the suborder of Nematocera. They mainly inhabit freshwater envi- ronments, although there are some marine and terrestrial species. The species mainly considered in the present study is Chironomus riparius. Mouthpart deformities are considered a sublethal indi- cation of exposure to toxic sediments. Mouthpart deformities result from a physiological disturbande during larval moulting. To try to understand whether other parts of the larvae are also interested by the sublethal adverse effect, nucleolus activity in the salivary gland cells was related to the incidence of defor- mities. Those larvae presenting mentum deformities has a signi- ficantly higher incidence of active nucleoli in their polytenic chromosomes than not deformed ones. Deformed larvae seem thus to be synthesising, in the salivary glands, some additional proteins that are not produced....

Keywords

chironomids, sediment, toxicity

People

Name Role Start End
Ollevier, Frans promotor

Orgunits

Name Role Start End
Animal Ecology and Systematics Section unknown

created:2011-12-14 14:18:59 UTC, source:iweto

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