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The Ecology of Bruchids Attacking Legumes (Pulses) - Proceedings of the International Symposium held at Tours (France), April 16-19, 1980 (Hardcover)
Loot Price: R4,312
Discovery Miles 43 120
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The Ecology of Bruchids Attacking Legumes (Pulses) - Proceedings of the International Symposium held at Tours (France), April 16-19, 1980 (Hardcover)
Series: Series Entomologica, 19
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As editor of this volume I am not going to emphasize the economic
im portance of the Bruchids of pulses, nor how necessary it is to
know the conditions of infestation of crops in order to achieve an
efficient protection; both points are testified by F.A.O.'s
sponsorship, as well as of the International Organization for
Biological Control. On the other hand I would like to stress the
scientific interest of the study of 'domestic' bruchids. It raises
questions which require that present basic entomological knowledge
be extended. I am not going to review all questions raised but I
will emphasize those I am most aware of. Some bruchid species have
been able to colonize habitats differing totally; some differing in
their latitude, and thus their basic periodicities; others
differing in their degree of complexity (stocks of seeds): What are
the respective roles played by polymorphism and plasticity in that
exceptional capacity? What differences are there between the
populations living on wild plants in dispersal areas and those
living in stocks? What are the alterations brought about by the
drastic selection pressures in populations having later colonized
habitats ecologically similar to the original habitats? What
factors determine the degree of specificity of trophic
relationships, and the possibilities of extension of the niche?
What influences are exerted by the other elements of the original
bio cenoses upon the behavioural evolution of these species? Such
are a few fundamental problems that can be tackled directly
through"
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