南非夸祖鲁-纳塔尔祖鲁兰地区甘蔗农业生态系统中的英亩生态

IF 1 Q3 ENTOMOLOGY
A. Bam, P. Addison, D. Conlong
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引用次数: 0

摘要

蝗虫是全世界众所周知的农作物和牧场害虫。它们周期性地对大片作物和牧场造成广泛破坏,这往往加剧了许多国家的粮食短缺问题。在南非,吖啶疫情很少达到经济规模,但在甘蔗种植园,过去八年来,据报道,当地吖啶物种的局部疫情在某些地区的频率和强度都在增加。本研究于2012年5月至2013年5月进行,目的是确定这些爆发地区甘蔗农业生态系统中具有经济重要性的吖啶类物种,监测季节性活动模式,评估采样方法,并通过损害评级确定主要物种的有害生物状况。已鉴定出五种特别重要的吖啶类物种:七足目Nomadacris septemfasciata(Serville)、前列环虫Petamella proselnalis(Karny)、蓝斑鸟蛛Ornithacris cynea(Stoll)、左流Cataloipus Sjötedt和绿脓杆菌Cyntacantharis aeruginosa(Stol)。所有物种都是唯一的。前列Petamella是数量最多的物种,表现出冬季卵滞育,而数量第二多的北七足线虫表现出冬季繁殖滞育。Petamella prosternalis和N.septemfasciata与损伤等级指数显著相关,表明这两个物种对甘蔗上发现的大部分取食损伤负有责任。这项研究首次确定了对南非夸祖鲁-纳塔尔祖鲁兰地区甘蔗造成损害的辛辣物种复合体,并记录了它们的种群特征和相关损害。这些数据是建立健全的综合虫害管理战略的重要信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Acridid ecology in the sugarcane agro-ecosystem in the Zululand region of KwaZulu-Natal, South Africa
Grasshoppers and locusts are well known crop and pasture pests throughout the world. Periodically they cause extensive damage to large areas of crops and grazing lands, which often exacerbate food shortage issues in many countries. In South Africa, acridid outbreaks rarely reach economic proportions, but in sugarcane plantations, localized outbreaks of native acridid species have been reported for the last eight years with increasing frequency and intensity in certain areas. This study was undertaken from May 2012 to May 2013 to identify the economically important acridid species in the sugarcane agroecosystem in these outbreak areas, to monitor seasonal activity patterns, to assess sampling methods, and to determine the pest status of the major species through damage ratings. Five acridid species of particular importance were identified: Nomadacris septemfasciata (Serville), Petamella prosternalis (Karny), Ornithacris cyanea (Stoll), Cataloipus zuluensis Sjötedt, and Cyrtacanthacris aeruginosa (Stoll). All species are univoltine. Petamella prosternalis was the most abundant species and exhibited a winter egg diapause, while N. septemfasciata, the second most abundant species, exhibited a winter reproductive diapause. Petamella prosternalis and N. septemfasciata were significantly correlated with the damage-rating index, suggesting that these two species were responsible for most of the feeding damage found on sugarcane. This study, for the first time, identified the acridid species complex causing damage to sugarcane in the Zululand area of KwaZulu-Natal, South Africa, and documented their population characteristics and related damage. These data are important information on which to base sound integrated pest management strategies.
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来源期刊
Journal of Orthoptera Research
Journal of Orthoptera Research Agricultural and Biological Sciences-Insect Science
CiteScore
1.90
自引率
25.00%
发文量
20
审稿时长
12 weeks
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