The importance of Mussidia nigrivenella Ragonot (Lepidoptera: Pyralidae) as a post-harvest pest in different storage structures in Benin
The importance of Mussidia nigrivenella Ragonot (Lepidoptera: Pyralidae) as a post-harvest pest in different storage structures in Benin
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DOI：
10.1016/j.jspr.2009.10.004
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发表时间：
2010-04-01
影响因子：
2.7
通讯作者：
Vidal, Stefan
中科院分区：
文献类型：
--
作者：
Agboka, Komi;Schulthess, Fritz;Vidal, Stefan
在西非，玉米穗上最具破坏性的鳞翅目害虫是梨形蝇（Mussidia nigrivenella）。虽然它主要被描述为一种田间害虫，但它可以在储存长达4个月的玉米上进食。2006年在贝宁进行了一项调查，以评估M。几内亚南部（SGS）和北方稀树草原（NGS）不同玉米储藏系统中的黑腔菌侵染。在SGS和NGS中，在储存的前28周内，受侵扰的商店百分比分别从86.7%降至26.7%和从51.4%降至14.3%。在同一时间内，M.在两个区中，每穗轴黑脉菌从0.36下降到0.04。所有幼虫期，但大多数是3 - 5龄，即使在12周后也经常发现，表明M。尽管再侵染或发育延迟也可以解释这一观察结果，但黑腔菌可能在储存中繁殖。最高的M。在“Ava”和Crib商店中分别发现了16.8%和14.4%的黑静脉感染率。在“Ava”中的侵染率最高，在聚乙烯袋或泥筒仓中储存的玉米籽粒中的侵染率最低。在一项实验室试验中，采后甲虫的存在对M. nigrivenella，表明强烈的种间竞争。(C)2010爱思唯尔有限公司版权所有。
In West Africa, the most damaging lepidopteran pest of maize ears is the pyralid Mussidia nigrivenella. Although it is mostly described as a field pest, it can be found feeding on maize stored for up to 4 months. A survey was conducted in Benin in 2006 to assess M. nigrivenella infestations in different maize storage systems in the Southern (SGS) and Northern Guinea Savanna (NGS). In SGS and NGS the percentage of infested stores decreased from 86.7% to 26.7% and from 51.4% to 14.3%, respectively, during the first 28 weeks of storage. During the same time, mean numbers of M. nigrivenella per cob decreased from 0.36 to 0.04 across both zones. All larval stages, but mostly 3rd-5th instars, were frequently found even after more than 12 weeks, indicating that M. nigrivenella may have reproduced in storage, although reinfestation or delayed development could also explain this observation. The highest M. nigrivenella incidences of 16.8% and 14.4% were found in the "Ava" and crib stores, respectively. Infestations were highest in "Ava" and lowest in maize grain stored in polyethylene bags or in mud silos. In a laboratory experiment, the presence of post-harvest beetles negatively affected the bionomics of M. nigrivenella, indicating strong interspecific competition. (C) 2010 Elsevier Ltd. All rights reserved.