Patch exploitation by the parasitoids Cotesia rubecula and Cotesia glomerata in multi‐patch environments with different host distributions
نویسندگان
چکیده
منابع مشابه
Herlihy et al.: Distribution of Cotesia rubecula and Displacement of C. glomerata 461 DISTRIBUTION OF COTESIA RUBECULA (HYMENOPTERA: BRACONIDAE) AND ITS DISPLACEMENT OF COTESIA GLOMERATA IN EASTERN NORTH AMERICA
A survey was conducted from May to Oct of 2011 of the parasitoid community of the imported cabbageworm, Pieris rapae (Lepidoptera: Pieridae), in cole crops in part of the eastern United States and southeastern Canada. The findings of our survey indicate that Cotesia rubecula (Hymenoptera: Braconidae) now occurs as far west as North Dakota and has become the dominant parasitoid of P. rapae in th...
متن کاملOptimal patch-leaving behavior: A case study using the parasitoid <i>Cotesia rubecula</i>
1. Parasitoids are predicted to spend longer in patches with more hosts, but previous work on Cotesia rubecula (Marshall) has not upheld this prediction. Tests of theoretical predictions may be affected by the definition of patch leaving behavior, which is often ambiguous. 2. In this study whole plants were considered as patches and assumed that wasps move within patches by means of walking or ...
متن کاملThe impact of host aggressiveness on sex allocation by the gregarious parasitoid wasp Cotesia glomerata (L.).
Parasitoid wasps lay female eggs or a high proportion of female eggs in favourable host insects because female wasps require many more resources during their development. Many studies have tested the effects of host physiological status on the sex allocation of parasitoids, but few have attempted to test the effects of host behavioural traits. Cotesia glomerata is a gregarious parasitoid wasp t...
متن کاملThe effect of resource aggregation at different scales: optimal foraging behavior of Cotesia rubecula.
Resources can be aggregated both within and between patches. In this article, we examine how aggregation at these different scales influences the behavior and performance of foragers. We developed an optimal foraging model of the foraging behavior of the parasitoid wasp Cotesia rubecula parasitizing the larvae of the cabbage butterfly Pieris rapae. The optimal behavior was found using stochasti...
متن کاملIsolation and characterization of a Cotesia rubecula bracovirus gene expressed in the lepidopteran Pieris rapae.
Polydnaviruses are endogenous particles that are crucial for the survival of endoparasitoid wasps, providing active suppression of the immune function of the lepidopteran host in which wasp larvae develop. The Cotesia rubecula bracovirus (CrBV) is unique in that only four gene products are detected in larval host (Pieris rapae) tissues and expression of CrBV genes is transient, occurring betwee...
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ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 1998
ISSN: 0021-8790,1365-2656
DOI: 10.1046/j.1365-2656.1998.00239.x