Discrimination between parasitized and healthy hosts by Microplitis rufiventris Kok.

Hegazi E.M., . and Shaaban M.A., . and El-Singaby N.R., . Discrimination between parasitized and healthy hosts by Microplitis rufiventris Kok. pp. 183-190. ISSN 0127-6883

Host discrimination by mated female of Microplitis rufiventris Kok. a solitary parasitoid of the cotton leafworm Spodoptera littoralis (Boisd.) seems to be based upon internal and external factors. The results suggest the presence of an internal deterrent which may be parasitism-age-dependent. Hosts possessing late first instar of parasitoid larvae were less acceptable than hosts with younger stages present. The discrimination ability of the parasitoid female was not absolute and was instar-dependent. This external factor may confound the non-random distribution of parasitoid eggs. The contamination of host larvae with their own hemolymph was not the main reason for inducing the parasitoid female to re-parasitise the host.

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Abstract

Host discrimination by mated female of Microplitis rufiventris Kok. a solitary parasitoid of the cotton leafworm Spodoptera littoralis (Boisd.) seems to be based upon internal and external factors. The results suggest the presence of an internal deterrent which may be parasitism-age-dependent. Hosts possessing late first instar of parasitoid larvae were less acceptable than hosts with younger stages present. The discrimination ability of the parasitoid female was not absolute and was instar-dependent. This external factor may confound the non-random distribution of parasitoid eggs. The contamination of host larvae with their own hemolymph was not the main reason for inducing the parasitoid female to re-parasitise the host.

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Item Type:	Article
Additional Information:	4 tables; 27 ref. Summary (En)
AGROVOC Term:	SPODOPTERA LITTORALIS
AGROVOC Term:	PARASITOS
AGROVOC Term:	LARVAS/ PARASITISMO
AGROVOC Term:	HUESPEDES
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:55
URI:	http://webagris.upm.edu.my/id/eprint/20073

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