Demographic parameters of the invasive species Bactrocera invadens (Diptera:Tephritidae) in guinean area of Côte d'ivoire

N'Guessan Ehikpa Naomie Melinand, Aboua Louis Roi Nondenot, Serikouassi Philomène Badama, Koua Hervé Kouakou, Vayssières Jean-François. 2011. Demographic parameters of the invasive species Bactrocera invadens (Diptera:Tephritidae) in guinean area of Côte d'ivoire. Journal of Asian Scientific Research, 1 (6) : 312-319.

Résumé : The invasive species, Bactrocera invadens Drew Tsuruta & White, is a major pest of mangoes (Mangifera indica L.) and sweet oranges (Citrus sinensis Osbeck) in Côte d'Ivoire.. A better knowledge of its biology can improve the control of this new destructive pest. The study was carried out under semi-natural conditions of orchard and in laboratory at the insectarium of Cocody University (28.2 ± 2.7 ° C and 81 ± 3% RH). Thirty newly emerged couples of B. invadens were gathered. Five healthy fruits were presented to each couple every 24:00 until the death of the females. The duration of the biological cycle was of 20.93 ± 0.96 days on mango and of 23.83 ± 1.21 days on sweet orange. It comprises 3 larval stages, all infesting for the two hosts and a pupa stage followed by the adult stage. The number of eggs laid by a female was higher on mango (269.13 ± 41.20 eggs) than on sweet orange (58.97 ± 6.35 eggs). The rates of emergence on the two substrates were respectively 74.17 ± 2.71%, and 35 ± 3.08%. The lifespan of adult males was 82.96 ± 5.82 days on mango and 64.3 ± 2.9 days on sweet orange while life span of females was 75.96 ± 4.49 days on the first substrate and 54.7 ± 2.99 days on the second. Mango was the most suitable fruit species for oviposition and larval development of B. invadens. These results will allow a better determination of periods and means of intervention in the control of B. invadens.

Mots-clés Agrovoc : Bactrocera, Mangifera indica, dynamique des populations, reproduction sexuée, cycle de développement

Mots-clés géographiques Agrovoc : Côte d'Ivoire

Mots-clés complémentaires : Bactrocera invandens

Classification Agris : H10 - Ravageurs des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• N'Guessan Ehikpa Naomie Melinand, Université de Cocody (CIV)
• Aboua Louis Roi Nondenot, Université de Cocody (CIV)
• Serikouassi Philomène Badama, Université de Cocody (CIV)
• Koua Hervé Kouakou, Université de Cocody (CIV)
• Vayssières Jean-François, CIRAD-PERSYST-UPR HortSys (BEN)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/562509/)

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