Evidence from traditional and new technologies for northward migrations of Australian plague locusts (Chortoicetes terminifera) (Walker) (Orthoptera: Acrididae) to western Queensland
Evidence from traditional and new technologies for northward migrations of Australian plague locusts (Chortoicetes terminifera) (Walker) (Orthoptera: Acrididae) to western Queensland
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DOI：
10.1111/j.1442-9993.2005.01536.x
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发表时间：
2005-12-01
期刊：
影响因子：
1.5
通讯作者：
Wang, HK
中科院分区：
文献类型：
--
作者：
Deveson, ED;Drake, VA;Wang, HK
利用传统的调查数据，结合几种现代技术的信息，包括模拟风载运输轨迹、昆虫雷达直接观察和卫星图像，追踪了澳大利亚蝗灾（Chortoicumberterminifera）（步行者）（直翅目：蝗科）最近发生的情况。结果表明，从春季世代在南部和东部地区的物种范围，包括农业地区，夏季降雨地区在干旱的西部昆士兰州（QLD）的迁移，有助于发展的侵扰在几个场合。1999年11月和12月，新南威尔士州的蜂群迁移到西昆士兰州，导致蜂群数量迅速增加，经过几代人的努力，导致2000年3月和4月农业地区发生重大虫害。有证据表明，1995年、1997年和2000年也发生了向北迁移的情况。这些都有助于在夏季早期的人口在昆士兰州，但没有导致大规模迁移到南部的秋季。这些观察结果表明，在大部分的地理范围内的物种之间的冬季和夏季降雨的空间动态的特点交换迁移的模式。这种模式似乎是适应性的，并建议迁移在C。是由当代自然选择维持的。
The development of recent infestations of the Australian plague locust (Chortoicetes terminifera) (Walker) (Orthoptera: Acrididae) has been traced using traditional survey data combined with information from several modern technologies including simulation of windborne transport trajectories, direct observation with entomological radar and satellite imagery. The results indicate that migration from spring generations in the southern and eastern parts of the species range, including agricultural areas, to the summer rainfall areas in arid western Queensland (Qld) has contributed to the development of infestations on several occasions. Migration from swarm populations in New South Wales to western Qld in November and December 1999 contributed to a rapid population increase that, over a sequence of generations, led to the major infestation of agricultural areas in March and April 2000. There is evidence that northward migrations also occurred in 1995, 1997 and 2000. These contributed to the early summer populations in Qld, but did not result in large migrations to the south in autumn. These observations suggest that a pattern of exchange migration across much of the geographical range of the species between regions of winter and summer rainfall characterizes the spatial dynamics of this species. This pattern appears to be adaptive and suggests migration in C. terminifera is sustained by contemporary natural selection.