Paper
Population Abundance of the Ectoparasitoid Diglyphus isaea Walker (Hymenoptera: Eulophidae) on Tomato Leaf Miner Liriomyza bryonia. (Kaltenbach) (Diptera: Agromyzidae) on Some Winter Host Plants in Alejelat Region, Libya
- Authors:
- A. R. Elkhouly; Mohamed O. Albasha; A. L. Hririg
- Abstract
- Natural abundance of the ectoparasitoid Diglyphus isaea walker was studied on four winter host plants, broad bean (Vecia faba), pea (Pisum sativum), mallow (Malva sylvestris), and snow thistle (Sonchus oleraceus), in Alejelat region. The parasitoid showed low populations in December on all studied host plants except broad bean, then developed high populations in February and March. The population decreased till the end of the growing season. D. isaea recorded 3-4 peaks of abundance on all studied host plants, the highest peak recorded 64, 198, 70 and 103 individuals/ 100 infested leaflets on broad bean, pea, mallow, and snow thistle, respectively. The highest average numbers occurred in December on broad bean recording 41.0±20.7, in March on pea recording 127.0±74.0, and in February on mallow and snow thistle recording 37.8±19.1 and 87.5±12.7 individuals/ 100 infested. On the other hand, monthly average percentages of parasitism recorded its highest numbers in January, 66.7±5.6%, 69.5±13.4%, and 57.9±6.7%, on brad bean, pea, and mallow, respectively and 68.8±6.9% on snow thistle in March. The percentage of killed larvae, according to host-feeding recorded, its highest monthly average numbers January on broad bean, pea, mallow and snow thistle recording, 21.7±17.7, 17.3±4.3, 23.7±2.1 and 14.4 ± 5.5, respectively.
- Keywords
- Diglyphus Isaea; Abundance; Host Plants
- StartPage
- 41
- EndPage
- 45
- Doi
- 10.18005/JAEB0301006