Naslov
Effects of the insect growth regulator diflubenzuron on the molting process of Daphnia magna (Cladocera)

Autori
Velki, Mirna ; Stepić, Sandra ; Hackenberger, Branimir

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
International conference on invertebrate reproduction and development in the age of genetic modifications : Abstracts / - , 2010

Skup
International conference on invertebrate reproduction and development in the age of genetic modifications

Mjesto i datum
Prag, Češka Republika, 16.08.2010. - 20.08.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
diflubenzuron; growth regulator; molting process; Daphnia magna

Sažetak
Diflubenzuron is benzamide larvicide with stomach and contact action. It acts as growth regulator that inhibits chitin synthesis at the time of molting and disables the formation of new cuticle by disrupting the normal growth and development of insects and crustaceans. When larvae is treated with diflubenzuron they are either unable to escape the old larval skin, or the new, weak cuticle of the new instar is lethally injured and larvae dies before reaching the next growth stage. Diflubenzuron is used on agricultural areas against insect pests on plants and in closed water areas against crustaceans fish ectoparasites. Because of its action as growth regulator it was necessary to investigate how would this larvicide, and its residues, affect non-target organisms when applied in waters. So the aim of this experiment was to investigate and evaluate effects of diflubenzuron on molting process in Daphnia magna (Cladocera). These crustaceans were exposed to different concentrations of diflubenzuron and mortality i.e. growth inhibition were monitored. Results showed that diflubenzuron, even when applied in extremely low concentrations, caused irregularities in molting process and mortality.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA