Summary
The present work is a field study of seven species ofCoccinellidae suitable for use in the biological control of aphids in cultivated areas of South Eastern France.
The distribution of larvae and adults has been studied all the year long in the different geographical areas where aphid pullulations occur and according to the different types of plants.
Sampling units have been distributed in five different «strata» classified A, B, M, N, V, on the basis of height: from 0 to 50 cm low plants: A. wild B. cultivated. from 50 cm to 2 m shrubs: M. wild N. cultivated. more than 2 m trees: V. wild or cultivated together.
The adults ofCoccinellidae are able to disperse widely but they show a strong preference for a given type of habitat; they are generaly able to feed on a great number of species of aphids but many of these do not allow egg production or larval nutrition. These factors have been studied in the laboratory.
One of the results of this study is to give an idea of the potentiel efficiency of the different monovoltin or polyvoltin species present in the area during the successive periods of the year.
Spatial limitation as a consequence of the action of ecological factors is the most characteristic feature of the behaviour of coccinellid predators; its influence on specificity is greater than the actual choice of a given host as a food.
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Iperti, G. Contribution a l'étude de la spécificité chez les principales coccinelles aphidiphages des alpesmaritimes et des basses-alpes. Entomophaga 10, 159–178 (1965). https://doi.org/10.1007/BF02385291
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DOI: https://doi.org/10.1007/BF02385291