Life table studies and intrinsic rate of increase ofAgathis Unicolorata (Shenefelt) (Hymenoptera: Braconidae)
- 13 Downloads
In the laboratory studies,Agathis unicolorata (Shenefelt) larval parasite oviposits in the body cavity of the host larvaeP. operculella where parasite larva develops. The mature larva emerges from the host killing it in the process and spins a cocoon. The longevity of ovipositing females averaged 10 days (maximum 14). The mated parasite had on average ovipositional period of 8·5 days (maximum 12) and produced an average of 107·7 adult progeny of the both sexes. The sex-ratio male: female of their progeny averaged 2·1:1. The rate of multiplication (R 0) was 34·56 times in mean generation time (T) 24·602. The intrinsic rate of increase (r m ) ofA. unicolorata population under laboratory conditions was 0·144 per female per day.
KeywordsAgathis unicolorata life table studies fecundity
Unable to display preview. Download preview PDF.
- Campbell A and Mackauer 1975 The effect of parasitism byAphidius smithi (Hymenoptera: Aphidiidae) on reproduction and population growth of pea aphid (Hemoptera: Aphidiidae)Can. Ent. 107 919–926Google Scholar
- Frazer B D 1972 Life tables and intrinsic rates of increase of apterous black bean aphids on broad bean (Homoptera: Aphidiidae)Can. Ent. 104 1717–1722Google Scholar
- Lloyd D C and Aquiles Silverio Guido, 1963 Report of work carried out: Commonwealth Institute of Biol. Control, 82 ppGoogle Scholar
- Quednau P W 1970 Notes on life-history, fecundity, longevity and attack pattern ofAgathis pumila (Hymenoptera: Braconidae), a parasite of larch casebearerCan. Ent. 102 736–745Google Scholar
- Ramchandran Nair K and Rao V P 1967 Introduction ofCopidosoma Koehleri Blanchard for the control potato tuber mothGnorimoschema operculella (Zelles) in India and its supply to Tanzania and MauritiusTech. Bull. Commonw. Inst. Biol. Control. 8 139–147Google Scholar
- Ramchandran Nair K and Rao V P 1972 Results of survey of natural enemies of potato tuber mothPhthorimaea operculella (Zeller) (Lsp: Gelechiidae) in the field in Mysore State and Assam and its other hosts recorded in IndiaTech. Bull. Commonw. Inst. Biol. Control 9 73–75Google Scholar
- Watson T F 1964 Influence of host plant condition on population increase ofTetranychus telarius (Linnaeus) (Acarina: Tetranychidae)Hilgardia 35 273–322Google Scholar