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Some recent puzzles in biological control

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Abstract

Six recent examples of biological control successes are described with comments on how these have been achieved. They are that ofPromecotheca cumingi Baly in Sri Lanka,Diatraea saccharalis (F.) in Barbados,Mythimna separata (Wlk.) in New Zealand,Nezara viridula (L.) in Australia,Chilo partellus (Swinh.) in Pakistan andEupatorium odoratum L. in Sri Lanka (as compared with other areas). Each shows some peculiar features which may well be of interest when considering future biological control attempts. In general it is postulated that since the introduction of the beneficial species into a new area is the final test of its capabilities this should not be delayed in order to find out more about its detailed ecology, which may actually be irrelevant. Once it is shown that an introduction cannot be harmful it should be attempted, in order to obtain possible economic results as quickly as possible.

Résumé

L'auteur décrit six récents exemples de succès en matière de lutte biologique et ajoute des commentaires sur leur réalisation. Il s'agit de la lutte contrePromecotheca cumingi Baly au Sri Lanka,Diatraea saccharalis F. aux Barbades,Mythimna separata Walk. en Nouvelle Zélande,Nezara viridula L. en Australie,Chilo partellus Swinh. au Pakistan etEupatorium odoratum L. au Sri Lanka (en comparaison avec d'autres régions). Chaque cas montre quelques particularités qui pourraient bien être instructives lors de futurs essais de lutte biologique. En général, l'auteur postule que l'introduction des espèces utiles dans une nouvelle région peut seule apporter la preuve définitive de leur capacité d'action et que cette introduction ne doit pas être retardée sous le prétexte de recherches sur leur écologie détaillée, ce qui peut en réalité être une faute. Dès qu'il est prouvé qu'une introduction ne peut pas être nuisible, elle doit être tentée de manière à obtenir des résultats d'ordre économique le plus vite possible.

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Simmonds, F.J. Some recent puzzles in biological control. Entomophaga 21, 327–332 (1976). https://doi.org/10.1007/BF02371629

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  • DOI: https://doi.org/10.1007/BF02371629

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