Effects of 2,4-D and maleic hydrazide on the glycogen level in the embryonic development of Pimpla turionellae (L.) (Hym., Ichneumonidae)

Ozkan A., Yanikolu A.

JOURNAL OF APPLIED ENTOMOLOGY-ZEITSCHRIFT FUR ANGEWANDTE ENTOMOLOGIE, cilt.123, sa.4, ss.211-216, 1999 (SCI-Expanded) identifier identifier

Özet

The effects of the herbicides 2,4-D and maleic hydrazide, which are used against wild plants in farming, on the glycogen level in the embryological development of Pimpla turionellae, an important insect species used in biological control programmes, have been investigated. Various concentrations of the applied herbicides decreased the hatching rate and glycogen levels of the eggs which were still going through embryonic development. It was observed that the glycogen level of Pimpla turionellae eggs that were not exposed to herbicides increased after 4 and 8 h during embryonic development, but decreased in the later stages (24 and 30 h). It was found that the hatching rate and glycogen levels throughout the embryonic development decreased with as the concentrations of 2,4-D and maleic hydrazide applied were increased.

The effects of the herbicides 2,4-D and maleic hydrazide, which are used against wild plants in farming, on the glycogen level in the embryological development of Pimpla turionellae, an important insect species used in biological control programmes, have been investigated. Various concentrations of the applied herbicides decreased the hatching rate and glycogen levels of the eggs which were still going through embryonic development. It was observed that the glycogen level of Pimpla turionellae eggs that were not exposed to herbicides increased after 4 and 8 h during embryonic development, but decreased in the later stages (24 and 30 h). It was found that the hatching rate and glycogen levels throughout the embryonic development decreased with as the concentrations of 2,4-D and maleic hydrazide applied were increased.