Publications 1991


Alphen, J.J.M. van, G. Nordlander & I. Eijs. Host habitat finding and host selection of the Drosophila parasitoid Leptopilina australis (Hymenoptera, Eucoilidae), with a comparison of the niches of European Leptopilina species. Oecologia 87: 324 -329.


Chassagnard M.Th. & A.R. Kraaijeveld. The occurrence of Zaprionus sensu stricto in the palearctic region. Annls. Soc. ent. Fr 27:495-496.


Driessen G., L. Hemerik & B. Boonstra. Host selection behaviour of the parasitoid Leptopilina clavipes, in relation to survival in hosts. Neth. J. zool. 41: 99-111


Driessen & L. Hemerik. Aggregative responses of parasitoids and parasitism in populations of Drosophila breeding in fungi. Oikos 61: 96-107.


Dijken, M.J. van, P. Neuenschwander, J.J.M.van Alphen & W.N.O Hammond. Sex ratios in field populations of Epidinocarsis lopezi, an exotic parasitoid of the cassava mealybug, in Africa. Ecol. Entomol. 16: 233 -240


Dijken, M.J. van. A cytological method to determine primary sex ratio in the solitary parasitoid Epidinocarsis lopezi. Entomol. exp.appl. 60: 301 -304.


Dijken, M.J. van & J.J.M. van Alphen. Mutual interference and superparasitism in the solitary parasitoid Epidinocarsis lopezi. Med Fac. Landbouww. Rijksuniv. Gent,



Dijken, M.J. van & J.J.M. van Alphen. Sex allocation in Epidinocarsis lopezi: the influence of host-size distribution and its effect on the population sex ratio in cassava fields in Africa. Redia 74:


Haccou P., S.J. de Vlas, J.J.M. van Alphen & M.E.Visser. Information processing by foragers: effects of intra-patch experience on the leaving tendency of Leptopilina heterotoma. J. Anim. Ecol 60: 93-106


Haccou, P, J.J.M. van Alphen & W.R.B. Heitmans. Optimal clutch size of parasitoids in stochastically fluctuating environments. Proc. Exper. & Appl. Entomology 2: 185-189.


Hofker, K., C. Conijn & J.J.M. van Alphen. Is the Iris mealybug, Phenacoccus avenae Borchenius, able to multiply itself and spread in bulbfields in the Netherlands? Med Fac. Landbouww. Rijksuniv. Gent, 56: 995-1001


Janssen A.R.M., J.J.M. van Alphen, M. Sabelis & K. Bakker. Microhabitat selection behaviour of Leptopilina heterotoma changes when odour of competitor is present. Redia 74:


Lenteren, J.C. Encounters with prasitized hosts: to leave or not to leave the patch. Neth. J. Zool. 41: 144- 157.


Mollema C. Heritability estimates of host selection behaviour by the Drosophila parasitoid Asobara tabida. Neth. J. Zool. 41: 174-183.


Visser M.E. & G. Driessen. Indirect mutual Interference in parasitoids. Neth. J. Zool. 41: 214-227.


Visser, M.E. Prey selection by predators depleting a patch: an ESS model. Neth. J.

Zool. 41: 63-79.


Visser M.E. & M.J. Sjerps. Optimal diet in depletable patches, a comparison of two papers. Oikos 61:

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