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Étude, par les Pièges a eau, de la Faune Entomologique d'Un Champ de Coton en Cote-d'Ivoire Centrale (Foro-Foro)

Étude, par les Pièges a eau, de la Faune Entomologique d'Un Champ de Coton en... Summary D. Duviard: The insect fauna of a cotton field as sampled by yellow water traps, in central Ivory Coast. From august to december 1970 (all over the cotton growing season in Ivory Coast) yellow water traps were used in two experimental cotton fields established in a tree savanna of central Ivory Coast. Traps were placed at 5 different levels (0, 50, 100, 150 and 200 cm over ground surface), 48 hours a week during 20 weeks. Space structure of the crop and preliminary datas of the field microclimate were obtained during this time. The cotton field received no insecticide. Leaf area index culminated at 0,82, height of cotton plants, at 1 metre. Variations of temperature, dew point, relative hygrometry were more those of a bare soil than those of a crop. Light intensity was the only modified factor. In an entomological point of vue, the datas show the qualitative and quantitative abundance of insects, and allow the description of three phenological periods, closely related with the local climate. Seasonal fluctuations of numerous taxonomic groups are presented. Yellow water traps show the particular importance of Aphididae, Aleurodidae, Psyllidae, Jassidae and of their potential predators Syrphidae, Dolichopodidae, Empididae, and, in a lesser way, Coccinellidae. Spatial distribution of the more numerous groups is described, showing a stratification of the insect fauna inside and just over the crop; this stratification evolves with time and seems related to the spatial structure of the cotton field. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annales de la Société entomologique de France (N S ) Taylor & Francis

Étude, par les Pièges a eau, de la Faune Entomologique d'Un Champ de Coton en Cote-d'Ivoire Centrale (Foro-Foro)

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Publisher
Taylor & Francis
Copyright
© 1973 Société entomologique de France
ISSN
2168-6351
eISSN
0037-9271
DOI
10.1080/21686351.1973.12278132
Publisher site
See Article on Publisher Site

Abstract

Summary D. Duviard: The insect fauna of a cotton field as sampled by yellow water traps, in central Ivory Coast. From august to december 1970 (all over the cotton growing season in Ivory Coast) yellow water traps were used in two experimental cotton fields established in a tree savanna of central Ivory Coast. Traps were placed at 5 different levels (0, 50, 100, 150 and 200 cm over ground surface), 48 hours a week during 20 weeks. Space structure of the crop and preliminary datas of the field microclimate were obtained during this time. The cotton field received no insecticide. Leaf area index culminated at 0,82, height of cotton plants, at 1 metre. Variations of temperature, dew point, relative hygrometry were more those of a bare soil than those of a crop. Light intensity was the only modified factor. In an entomological point of vue, the datas show the qualitative and quantitative abundance of insects, and allow the description of three phenological periods, closely related with the local climate. Seasonal fluctuations of numerous taxonomic groups are presented. Yellow water traps show the particular importance of Aphididae, Aleurodidae, Psyllidae, Jassidae and of their potential predators Syrphidae, Dolichopodidae, Empididae, and, in a lesser way, Coccinellidae. Spatial distribution of the more numerous groups is described, showing a stratification of the insect fauna inside and just over the crop; this stratification evolves with time and seems related to the spatial structure of the cotton field.

Journal

Annales de la Société entomologique de France (N S )Taylor & Francis

Published: Jan 31, 1973

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