Loko Y L, Dansi A, Tamo M, Bokonon-Ganta A H, Assogba P, Dansi M, Vodouhè R, Akoegninou A, Sanni A
Laboratory of Agricultural Biodiversity and Tropical Plant breeding-LAAPT, Faculty of Sciences and Technology-FAST-Dassa, University of Abomey-Calavi-UAC, P.O. Box 526, Cotonou, Benin.
ScientificWorldJournal. 2013 Apr 4;2013:484536. doi: 10.1155/2013/484536. Print 2013.
Twenty-five villages of Northern Benin were surveyed to identify the constraints of yam chips production, assess the diversity of storage insects on yam chips, and document farmers' perception of their impacts on the stocks and their traditional management practices. Damages due to storage insects (63.9% of responses) and insufficiency of insect-resistant varieties (16.7% of responses) were the major constraints of yam chips production. Twelve insect pest species were identified among which Dinoderus porcellus Lesne (Coleoptera, Bostrichidae) was by far the most important and the most distributed (97.44% of the samples). Three predators (Teretrius nigrescens Lewis, Xylocoris flavipes Reuter, and Alloeocranum biannulipes Montrouzier & Signoret) and one parasitoid (Dinarmus basalis Rondani) all Coleoptera, Bostrichidae were also identified. The most important traditional practices used to control or prevent insect attack in yam chips were documented and the producers' preference criteria for yam cultivars used to produce chips were identified and prioritized. To further promote the production of yam chips, diversification of insect-resistant yam varieties, conception, and use of health-protective natural insecticides and popularization of modern storage structures were proposed.
对贝宁北部的25个村庄进行了调查，以确定木薯片生产的制约因素，评估木薯片上储存昆虫的多样性，并记录农民对这些昆虫对库存影响的看法及其传统管理做法。储存昆虫造成的损害（63.9%的受访者提到）和抗虫品种不足（16.7%的受访者提到）是木薯片生产的主要制约因素。共鉴定出12种害虫，其中莱斯内氏粉蠹（鞘翅目，长蠹科）是迄今为止最重要且分布最广的（占样本的97.44%）。还鉴定出了三种捕食性昆虫（黑胫腿小蠹、黄足木盲蝽和双环异颅长蝽）和一种寄生性昆虫（基氏大腿小蜂），均属于鞘翅目长蠹科。记录了用于控制或预防木薯片受到昆虫侵害的最重要传统做法，并确定并排列了用于生产木薯片的山药品种的生产者偏好标准。为进一步促进木薯片生产，建议实现抗虫山药品种多样化，研发和使用具有健康保护作用的天然杀虫剂，并推广现代储存结构。
