Field life-tables and key mortality factors ofAchaea janata Linn on castor
- 17 Downloads
Field life-tables and key mortality factors of castor semilooperAchaea janata L. were studied on castor for the year 1985–86 and 1986–87. There were 4 regular overlapping generations during both the years. The parasitization ofAchaea janata larvae in early instars (I–III instar) by parasiteMicroplitis maculipennis (Sziepligetis) was 1·34, 4·41, 22·02 and 43·70% in first, second, third and fourth generation respectively during 1985–86. Similarly, the parasitization by same parasite was 44·12, 61·46 and 65·55% during second, third and fourth generation respectively in the year 1986–87. Key mortality factors and separate budget for each generations were prepared.
KeywordsField life-tables key mortality factors Achaea janata L.
Unable to display preview. Download preview PDF.
- Atwal A S and Bains S S 1974 Applied animal ecology (Ludhiana: Kalyani Publishers)Google Scholar
- Cherian M C and Basheer M 1946 The parasite complex of the castor semilooperAchaea janata L;Indian J. Entomol. 9 139–141Google Scholar
- Harcourt D G 1963 Major mortality factors in the population dynamics of the diamond back nothPlutella maculipennis (Vrt);Can. Entomol. Soc. Mem. 32 55–56Google Scholar
- Khan M Q 1946 Life history and bionomics of castor semilooper in Hyderabad (Deccan);Indian J. Entomol. 8 111–115Google Scholar
- Pandey N D, Sukhani T R and Gupta R L 1967 Bionomics ofAchaea janata L (Lep: Noc) Labdev;J. Sci. Technol. 5 128Google Scholar
- Rai P S and Jayaramaiah M 1978 The castor semilooper,Achaea janata (L) (Lep: Noc) and its control;J. Maharashtra Agric. Univ. 3 73–74Google Scholar
- Singh B, Dhaliwal J S and Atwal A S 1977 Population studies on maize borer,Chilo partellus S in Punjab IV. Life-tables for determining key mortality factors;Indian J. Ecol. 4 107–117Google Scholar
- Srivastava R P and Pande Y D 1966 Bionomics of the castor semilooper in Rajasthan;Ann. Arid Zone 5 87–96Google Scholar
- Varley G C and Gradwell G R 1965 Interaction of winter moth population changes;Proc. Int. Congr. Entomol. (London) 12 377–378Google Scholar