Ouali-N'Goran San-Whouly M, Akessé Ettien Narcice, Ouattara Gniré Mariam, Koné Daouda
Laboratory of Zoology and Animal Biology, Biosciences Training and Research Unit, Félix Houphouët-Boigny University, 22 BP 582 Abidjan 22, Cote D'Ivoire.
African Center of Excellence on Climate Change, Biodiversity and Sustainable Agriculture, Ex ESIE Bingerville-scientific pole of Félix Houphouët-Boigny University, 22 BP 582 Abidjan 22, Cote D'Ivoire.
Insects. 2020 Jul 22;11(8):456. doi: 10.3390/insects11080456.
Cerambycidae attacks were studied from October 2015 to September 2017 in three cashew tree orchards in the locality of Brobo in central Côte d'Ivoire. One hundred fifty-three (153) cashew trees, arranged on a diagonal from each orchard, were selected for sampling. The attacked plants and the branches cut per tree were counted every 15 days. Biotic parameters, namely phenological stages of trees, and abiotic factors, which are rainfall, relative humidity and average temperature, were recorded throughout the study. Attacks were observed from mid-September to January from the pre-flowering vegetative stage to the flowering stage. Attack period duration was therefore four and a half months per year. The peak of attacks was recorded in November with an attack rate of 88.02% in 2015 and 75.49% in 2016. No attack was recorded from February to mid-September, corresponding to the flowering, fruiting and post-harvest vegetative growth stages. This description of the attack process and the determination of attack periods provides essential data for the implementation of an effective and sustainable control method of this species.
2015年10月至2017年9月，在科特迪瓦中部布罗博地区的三个腰果果园对天牛科害虫的侵害情况进行了研究。从每个果园对角线上选取153棵腰果进行采样。每隔15天统计受侵害植株及每棵树被砍伐的树枝数量。在整个研究过程中记录生物参数（即树木的物候阶段）和非生物因素（降雨量、相对湿度和平均温度）。从9月中旬到1月，从天牛科害虫侵害初期的营养生长阶段到花期均观察到侵害情况。因此，每年的侵害期持续四个半月。侵害高峰期出现在11月，2015年的侵害率为88.02%，2016年为75.49%。2月至9月中旬未观察到侵害情况，这一时期对应花期、结果期和收获后的营养生长阶段。这种对侵害过程的描述以及侵害期的确定为实施该害虫的有效可持续防治方法提供了重要数据。
