Abstract
The developmental interactions between the gregarious endoparasitoidApanteles ruficrus Hal. and the army worm,Leucania separata Walker were investigated. The parasitoid preferred young host larvae and developed in 9.5 days irrespective of host age at the time of parasitization. The growth of parasitized host larvae were depressed. The net maximum weight of the host larva was positively correlated with the number of parasitoid eggs laid when the 2nd instar was parasitized. And when parasitizing in 2nd instar, the weight of parasitoid was negatively correlated with the number of eggs laid. The parasitoid has an ability to regulate the size of the host and the parasitoid itself according to the number of eggs laid when the host larva is very small.
Résumé
On a étudié les interactions dans le développement de l'endoparasitoide grégaire,Apanteles ruficrus Hal. et le ver gris,Leucania separata Walker. Le parasitoide préfère les larves hôtes plus jeunes et se développe en 9,5 j. quel que soit l'âge de l'hôte au moment du parasitisme. La croissance des larves parasitées est diminuée. Le maximum de poids net de la chenille hôte est en corrélation positive avec le nombre d'œufs déposés par le parasitoide dans des larves du 2e stade. Quant le parasitisme intervient au 2e stade le poids du parasitoide est en corrélation négative avec le nombre d'œufs pondus dans la chenille. Le parasitoide a la capacité de réguler la taille de l'hôte et la sienne suivant le nombre d'œufs déposés quand la larve hôte est petite.
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References
Beckage, N.E. &Riddiford, L.M. — 1978. Developmental interactions between the tobacco hornworrManduca sexta and its braconid parasiteApanteles congregatus. —Entomol. Exp. Appl., 23, 139–151.
Corbet, S.A. — 1968. The influence ofEphestia kuehniella on the development of its parasiteNemeriti canescens. —J. Exp. Biol., 48, 291–304.
Dahlman, D.L. — 1969. Haemolymph specific gravity, soluble total protein and total solids of plant-reaed normal, and parasitized diet-reared tobacco hornworm larvae. —J. Insect Physiol., 15, 2075–2084.
Dahlman, D.L. &Herald, F. — 1971. Effects of the parasite,Apanteles congregatus, on respiration of tobacco horn-worm,Manduca sexta larvae. —Comp. Biochem. Physiol., 40A, 871–880.
Iwantsch, G.F. &Smilowitz, Z. — 1975. Relationships between the parasitoidHyposoter exiguae andTrichoplusia ni: prevention of host pupation at the endocrine level. —J. Insect Physiol., 21, 1151–1157.
Junnikkala, E. — 1966. Effect of braconid parasitization on the nitrogen metabolism ofPieris brassicae L. —Ann. Acad. Sci. Fenn. Biol., 4 (100), 1–83.
Jones, R.L. &Lewis, W.J. — 1971. Physiology of the host-parasite relationship betweenHeliothis zea andMicroplitis croceipes. —J. Insect Physiol., 17, 921–927.
Sato, Y. — 1976. Experimental studies on parasitization byApanteles glomeratus. I. Parasitization of different species of genusPieris. —Appl. Entomol. Zool., 11, 165–175.
— — 1980. Experimental studies on parasitization byApanteles glomeratus. V. Relationships between growth rate of parasitoid and host age at the time of oviposition. —Entomophaga, 25, 123–128.
Smilowitz, Z. &Iwantsch, G.F. — 1973. Relationships between the parasitoidHyposoter exiguae and the cabbage looper,Trichoplusia ni: Effects of host age on developmental rate of the parasitoid. —Environ. Entomol., 2, 759–763.
—— — 1975. Relationships between the parasitoidHyposoter exiguae and the cabbage looper,Trichoplusia ni: The effect of host age on ovipositional rate of the parasitoid and successful parasitism. —Can. Entomol., 107, 689–694.
Smith, C.L. &Smilowitz, Z. — 1976. Growth and development ofPieris rapae larvae parasitized byApanteles glomeratus. —Entomol. Exp. & Appl., 19, 189–195.
Syme, P.D. &Green, G.W. — 1972. The effects ofOrgilus obscurator [Hymenoptera: Braconidae] on the development of the European pine shoot moth [Lepidoptera: Olethreutidae]. —Can. Entomol., 104, 523–530.
Vinson, S.B. — 1972. Effect of the parasitoid,Campoletis sonorensis, on the growth of its host,Heliothis virescens. —J. Insect Physiol., 18, 1509–1514.
Vinson, S.B. &Barras, D.J. — 1970. Effects of the parasitoid,Cardiochiles nigriceps, on the growth, development, and tissues ofHeliothis virescens. —J. Insect Physiol., 16, 1329–1338.
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Tagawa, J., Sato, Y. & Tanaka, T. Developmental interactions between the army wormLeucania separata [Lep.: Noctuidae] and its parasiteApanteles ruficrus [Hym.: Braconidae] . Entomophaga 27, 447–454 (1982). https://doi.org/10.1007/BF02372068
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DOI: https://doi.org/10.1007/BF02372068