Release and establishment ofAphidiusspp. (Hymenoptera: Aphidiidae), parasitoids of pea aphid and blue green aphid in New Zealand

Role of nitrogen content of pea (Pisum sativum L.) on pea aphid (Acyrthosiphon pisum Harris) establishment

The leaf nitrogen content is generally accepted as an indicator of food quality and as a factor affecting host selection by phytophagous insects. The alate pea aphids (Acyrthosiphon pisum Harris, Aphididae) were given a choice among non-nodulated pea plants (Pisum sativum L.) supplied with one of four nitrate-N levels (0, 3, 15 and 30 mM). When whole plants were exposed to aphids for 7 days, th...

Pea Aphid

Variation in genome size and karyotype among closely related aphid parasitoids (Hymenoptera, Aphelinidae)

Genome sizes were measured and determined for the karyotypes of nine species of aphid parasitoids in the genus Aphelinus Dalman,1820. Large differences in genome size and karyotype were found between Aphelinus species, which is surprising given the similarity in their morphology and life history. Genome sizes estimated from flow cytometry were larger for species in the Aphelinus mali (Haldeman,...

Parasitoids (Hymenoptera: Braconidae: Aphidiinae) of Northeastern Iran: Aphidiine-Aphid-Plant Associations, Key and Description of a New Species

Aphid parasitoids of the subfamily Aphidiinae (Hymenoptera: Braconidae) of northeastern Iran were studied in this paper. A total of 29 species are keyed and illustrated with line drawings. The aphidiines presented in this work have been reared from 42 aphid host taxa occurring on 49 plant taxa from a total of 33 sampling sites. Sixty-six aphidiine-aphid-plant associations are presented. Trioxys...

checklist of aphidiinae parasitoids (hymenoptera: braconidae) and their host aphid associations in iran

fauna of the aphidiinae (hymenoptera: braconidae) of iran is reviewed and the data on their host aphid associations are summarized. seventy-eight species belonging to 17 genera of aphidiinae are listed in the associations with 193 aphid species. a total of 491 parasitoid-aphid associations are presented. the distribution of the aphidiinae species in different parts of iran and other countries i...