the functional response of aphidius ervi to different sitobion avenae densities on two wheat cultivars (sardary and alvand) was examined in laboratory conditions. experiments were carried out in test tubes on an f2 lab generation without wheat clusters and also on f2 and f5 generations in pots using wheat clusters. in the tubes, female wasps were exposed to aphid densities of 2, 4, 7, 14, 28, 3...

Morphological variation of Aphidius ervi Haliday (Hymenoptera: Braconidae) 1 associated to different aphid hosts 2 3 Cinthya M. Villegas , Vladimir Žikić, Saša S. Stanković, Sebastián A. Ortiz-Martínez, Ainara 4 Peñalver-Cruzand Blas Lavandero * 5 6 1: Laboratorio de Interacciones Insecto-Planta, Instituto de Ciencias Biológicas, Universidad de 7 Talca, Talca, Chile. 8 2: Department of Biology ...

Aphidius transcaspicus Telenga, a mealy plum aphid (Hyalopterus pruni Geoffroy) parasitoid from the Mediterranean, was recently introduced into Hawaii for control of invasive aphids. Under laboratory conditions the parasitoid successfully attacked several important aphid pests in Hawaii, including the melon aphid Aphis gossypii Glover, the banana aphid Pentalonia nigronervosa (Coquerel), the gr...

Local adaptation is promoted when habitat or mating preferences reduce gene flow between populations. However, gene flow is not only a function of dispersal but also of the success of migrants in their new habitat. In this study I investigated mating preference in conjunction with phenotypic plasticity using Aphidius parasitoids adapted to different host species. Males actively attempted to ass...

fumigant toxicity of camphor was studied against the aphid aphis craccivora koch and three associated natural enemies, i.e. coccinella undecimpunctata l., aphelinus albipodus hayat & fatima and aphidius colemani viereck. aphis craccivora was the most tolerant one compared with all tested natural enemies as the recorded lc50 values were 12.71, 6.33, 1.16 and 0.48 mg camphor/liter space for t...