Download Biological Control: (Cabi International) by C Vincent, M S Goettel, G Lazarovitz PDF

By C Vincent, M S Goettel, G Lazarovitz

Organic keep watch over, the administration of pests via dwelling organisms, has a protracted heritage of program to agriculture around the globe. notwithstanding, the potent use of invaluable organisms is limited through environmental, felony, and monetary regulations, forcing researchers to undertake more and more multi-disciplinary concepts for you to installation profitable organic regulate courses. it really is this complicated approach, together with the approach and the social setting of the researcher in addition to the technological know-how being pursued, that this e-book seeks to catch. Chapters show the studies of scientists from the preliminary look for compatible keep watch over brokers, to their unlock into ecosystems and at last to the invaluable results which display the good luck of organic keep an eye on throughout diversified agro-ecosystems. Drawing jointly historic views and methods utilized in the improvement of organic regulate in addition to outlining present debates surrounding terminology and differential strategies, organic keep an eye on: an international point of view might be a precious source.

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Fuscicollis (Frazer, 1989), although parasitism recorded in the years of these early releases was low: 0–6% parasitism. A. fuscicollis adults are very small with limited potential for dispersal. It is a univoltine egg parasitoid, although the A. , 1998a). This species’ capacity to rapidly increase in numbers would be high as it is also polyembryonic, producing over 80 larvae from a single egg (Junnikkala, 1960). Parasitized hosts are killed in the fifth instar by mummification as the parasitoid larvae pupate.

Because of its polyphagous nature, this species was not a good choice as a biological control agent. However, in North America, its accidental introduction had no practical consequences as it was already present. Unfortunately, it became part of the ‘formula’ for releases against P. rapae and was later deliberately introduced into New Zealand, Australia and Bermuda (Clausen, 1978). Relatively high rates of parasitism (33–64%) of P. rapae pupae by P. puparum have been recorded in unsprayed cole crops in Virginia, New Zealand and Australia (33–36%), but the population impact of this parasitism has not been measured.

2003) Laboratory and field host preferences of introduced Cotesia spp. parasitoids (Hymenoptera: Braconidae) between native and invasive Pieris butterflies. Biological Control 28, 214–221. , Nunn, C. and Pasquale, A. (2004) Life history pattern, host plants, and habitat as determinants of population survival of Pieris napi oleracea interacting with an introduced braconid parasitoid. Biological Control 29, 278–287. G. L. (1983) Biology and population fluctuation of Trichogramma evanescens Westwood, an egg parasite of Pieris rapae L.

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