Sex ratio and female sexual status of the coconut pest, Oryctes monoceros (Coleoptera: Dynastidae), differ in feeding galleries and pheromone-baited traps
| Autor: | Jean-Paul Morin, Kouassi Allou, Didier Rochat, F. Hala N'klo, Philippe Kouassi |
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| Přispěvatelé: | Centre National de Recherche Agronomique de Côte d'Ivoire (CNRA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Université Félix Houphouët-Boigny (UFHB), Physiologie de l'Insecte : Signalisation et Communication (PISC), Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National Agronomique Paris-Grignon (INA P-G) |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
0106 biological sciences
Cocos Male [SDV.BID]Life Sciences [q-bio]/Biodiversity DYNASTIDAE 010603 evolutionary biology 01 natural sciences Insect Control ORYCTES MONOCEROS Toxicology Sexual Behavior Animal Botany Animals Sex Attractants COCONUT SEX RATIO Scarabaeidae Larva biology Behavior Animal Reproduction Ovary food and beverages FEMALE REPRODUCTIVE SYSTEM General Medicine Feeding Behavior biology.organism_classification Pheromone trap Spermatogonia Coleoptera 010602 entomology INSECTE Insect Science Oryctes Sex pheromone Pheromone Female PEST analysis PHEROMONE TRAPPING Agronomy and Crop Science Sex ratio |
| Zdroj: | Bulletin of Entomological Research Bulletin of Entomological Research, Cambridge University Press (CUP), 2008, 98 (6), pp.581-586. ⟨10.1017/S0007485308005890⟩ Bulletin of Entomological Research, 2008, 98 (6), pp.581-586. ⟨10.1017/S0007485308005890⟩ |
| ISSN: | 0007-4853 |
| DOI: | 10.1017/S0007485308005890⟩ |
| Popis: | Publication Inra prise en compte dans l'analyse bibliométrique des publications scientifiques mondiales sur les Fruits, les Légumes et la Pomme de terre. Période 2000-2012. http://prodinra.inra.fr/record/256699; International audience; Oryctes monoceros is a serious coconut pest, causing LIP to 40% damage in tropical Africa. Synthetic aggregation pheromone, ethyl 4-methyloctanoate, has been used to lure adults to traps. Traps with pheromone Plus decaying palm material captured a high proportion of males. This raises the question whether individuals, which damage palms are receptive to the pheromone. We studied the sex ratio of the insects feeding on coconuts and those attracted to pheromone traps. Sixty two percent of adults from feeding galleries on living coconut palms were females. Pheromone with rotting palm material lured 43% females. To investigate the reasons for this difference, we compared the reproductive system of females lured to the odour traps or feeding in coconut galleries, or present in old rotting stems. Ninety six percent of the females trapped by pheromone had mated, and were sexually mature. In the galleries on living palms, 46% of females were immature, and 24% had not mated. In old rotting stems where eggs are laid and larvae develop, a mixture of 52% mated and 48% virgin females was found. Therefore, the pheromone together with the odour of rotting coconut stems signals a reproduction site to beetles, particularly mature females. In practice, the pheromone-baited traps will help in reducing the dissemination of gravid females, but will not affect directly the numbers Of immature ones attacking palms. Our results Show that when using pheromones for monitoring or controlling insects, the physiological status of the insects may have unexpected effects on the outcome. |
| Databáze: | OpenAIRE |
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