Premium
Studies on the effects of three antifeedants on the egg hatchability of Corcyra cephalonica Staint. (Galleriidae: Lepidoptera) and parasitism by Trichogramma australicum Gin. (Trichogrammatidae: Hymenoptera)
Author(s) -
Kareem A. A.,
Jayaraj S.,
Thangavel P.,
Paul A. V. Navarajan
Publication year - 1977
Publication title -
zeitschrift für angewandte entomologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0044-2240
DOI - 10.1111/j.1439-0418.1977.tb02383.x
Subject(s) - trichogrammatidae , trichogramma , parasitism , biology , hatching , lepidoptera genitalia , hymenoptera , pyralidae , toxicology , zoology , botany , ecology , parasitoid , host (biology)
The antifeedants TTA, TTH and TTCl in two concentrations each were evaluated for their effects on egg hatchability and parasitism by the egg parasite Trichogramma australicum Gin. by spraying directly on the eggs of mealmoth Corcyra cephalonica Staint. The compounds reduced considerably the egg hatching and at the same time did not hamper the quantum of parasite emergence. Zusammenfassung Untersuchungen über die Wirkung von 3 Fraßhemmstoffen auf das Ei‐Schlüpfen von Corcyra cephalonica Staint. (Galleriidae: Lepid.) und den Ei‐Parasiten Trichogramma australicum Gin. (Trichogr.: Hymen.) Die Antifeedants TTH (Triphenylzinnhydroxyd), TTA (Triphenylzinnazetat) und TTCl (Triphenylzinnchlorid) in 0,05–0,1 % angewandt, reduzierten das Schlüpfprozent der Eier von C. cephalonica gegenüber Kontrolle (0) um 37,7 % (TTCl 0,05 %) bis 76,7 % (TTCl 0,1 %). Die TTA‐ und TTH‐Wirkungen lagen dazwischen. Die in den Eiern parasitierende Schlupfwespe T. australicum konnte dagegen ihre Entwicklung in allen Eiern ungestört vollenden.