Scope for genetic enhancement of the parasitisation potential of four native strains ofTrichogrammatoideasp. nr.luteaGirault (Hymenoptera: Trichogrammatidae) in Kenya

Autor:	Ellie O. Osir, Stephen Gaya Agong, S. Sithanantham, Joseph M. Baya, L. M. Gitonga
Rok vydání:	2007
Předmět:	Veterinary medicine biology Strain (biology) media_common.quotation_subject Biological pest control Longevity Hymenoptera Helicoverpa armigera biology.organism_classification Fecundity Trichogrammatidae Insect Science Botany Agronomy and Crop Science Trichogramma media_common
Zdroj:	Biocontrol Science and Technology. 17:743-755
ISSN:	1360-0478 0958-3157
DOI:	10.1080/09583150701488669
Popis:	In response to emerging interest in commercial mass production of Trichogramma for Helicoverpa armigera biocontrol in eastern Africa, laboratory experiments were undertaken to assess the scope for genetic enhancement of the parasitisation potential of native strains of the local common trichogrammatid species, Trichogrammatoidea sp. nr. lutea. Four promising strains (ex-Kilifi – Kilifi District, ex-Kwa Chai – Kibwezi District, ex-Rarieda – Bondo District and ex-Ebuhayi, Kakamega District) were tested for cross-mating in reciprocal combinations with focus on fecundity and progeny female ratio. While all the crosses resulted in F1 progeny of both sexes, significant differences were observed between homogamic and reciprocal heterogamic crosses in fecundity, progeny production, proportion of female progeny and adult longevity. Among all the crosses, the cross between ex-Rarieda strain females and ex-Kilifi strain males resulted in progeny that was significantly superior in fecundity and progeny femal...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ba242fbe92aaf20c740ba276ae6d8e23 https://doi.org/10.1080/09583150701488669 Zobrazit plný text záznamu