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SOME FACTORS AFFECTING OVIPOSITION OF TRICHOGRAMMA CALIFORNICUM (HYMENOPTERA: TRICHOGRAMMATIDAE) IN ARTIFICIAL MEDIA1

Published online by Cambridge University Press:  31 May 2012

G. F. Rajendram
G. F. Rajendram
Affiliation:
Department of Zoology, University of Sri Lanka, Peradeniya, Sri Lanka
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Abstract

Oviposition by Trichogramma californicum Nagaraja and Nagarkatti into physiological saline encapsulated in paraffin droplets is influenced by the concentration of the liquid, population density of the parasite, and the addition of sugars, vitamins, and amino acids. Oviposition occurred within a concentration range of 0.43–1.28% NaCl, but there was no significant difference in the number of eggs deposited. Chances of oviposition generally increased with the increase of population density of the parasite and a minimum density of T. californicum females was required for oviposition. A phenomenon of enhancement, such that oviposition in any one vial is confined to one of the three droplets exposed, is recorded for certain media. However, this phenomenon was removed by addition of RNA, casein hydrolysate, or by use of Grace’s tissue culture medium without insect plasma and Grace’s modified medium with bovine and egg derivatives. Eggs deposited into 2 paraffin droplets containing modified Grace’s medium developed to the second instar larval stage.

Type
Articles
Information
The Canadian Entomologist , Volume 110 , Issue 4 , 01 April 1978 , pp. 345 - 352
Copyright
Copyright © Entomological Society of Canada 1978

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References

Arthur, A.P., Hegdekar, B. M., and Batsch, W. W.. 1972. A chemically defined synthetic medium that induces oviposition in the parasite Itoplectis conquisitor (Hymenoptera: Ichneumonidae). Can. Ent. 104: 1251–1258.Google Scholar
Dethier, V. G. 1947. The response of hymenopterous parasites to chemical stimulation of the ovipositor. J. exp. Zool. 105: 199–208.Google Scholar
Doutt, R. L. 1964. Biological characteristics of entomophagous adults. In DeBach, P. (Ed.), Biological control of insect pests and weeds. Chapman & Hall, London. 844 pp.Google Scholar
Flanders, S. E. 1937. Notes on the life history and anatomy of Trichogramma. Ann. ent. Soc. Am. 30(2): 304–308.Google Scholar
Hagen, K. S. and Tassan, R. L.. 1965. A method of providing artificial diets to Chrysopa larvae. J. econ. Ent. 58(5): 999–1000.Google Scholar
Hoffman, J. D. and Ignoffo, C. M.. 1974. Growth of Pteromalus puparum in a semisynthetic medium. Ann. ent. Soc. Am. 67(3): 524–525.Google Scholar
Hoffman, J. D., Ignoffo, C. M., and Dickerson, W. A.. 1975. In vitro rearing of the endoparasitic wasp, Trichogramma pretiosum. Ann. ent. Soc. Am. 68(2): 335–336.Google Scholar
Iyatomi, K. 1958. Effect of superparasitism on reproduction of Trichogramma japonicum Ashmead. X int. Congr. Ent. 4: 897–9000.Google Scholar
Klomp, H. and Teerink, B. J.. 1962. Host selection and number of eggs per oviposition in the egg-parasite Trichogramma embryophagus Htg. Nature 195: 1020–1021.Google Scholar
Pearl, R. 1932. The influence of density of population upon egg production in Drosophila melanogaster. J. exp. Zool. 63: 57–84.Google Scholar
Rajendram, G. F. Oviposition behaviour of Trichogramma californicum on artificial substrates. Ann. ent. Soc. Am. (in press).Google Scholar
Rajendram, G. F. and Hagen, K. S.. 1974. Trichogramma oviposition into artificial substrates. Environ. Ent. 3(3): 399–401.Google Scholar
Salt, G. 1937. Experimental studies in insect parasitism. V. The sense used by Trichogramma to distinguish between parasitized and unparasitized hosts. Proc. R. ent. Soc. Lond. (B) 122: 57–75.Google Scholar
Wylie, H. G. 1965. Discrimination between parasitized and unparasitized house fly pupae by females of Nasonia vitripennis Walk. Can. Ent. 97: 279–286.Google Scholar
Yunker, C. E., Vaughn, J. L., and Cory, J.. 1967. Adaptation of an insect cell line (Grace's Antherea cells) to medium free of insect haemolymph. Science 155: 1565–1566.Google Scholar