Biological control of water hyacinth, Pontederia crassipes (C. Mart.) Solms (Pontederiaceae), in California: release and re-distribution of biological control agents 1987–2006

IF 0.6 4区农林科学 Q4 ENTOMOLOGY

Pan-Pacific Entomologist Pub Date : 2021-07-30 DOI:10.3956/2021-97.2.55

M. Pitcairn, P. Pratt, B. Villegas, V. Popescu, C. Borkent, A. M. Reddy

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引用次数: 1

Abstract

Abstract. Water hyacinth, Pontederia crassipes (C. Mart.) Solms (Pontederiaceae), is a serious aquatic weed in lakes, ponds, and waterways in California and around the world. Three insects, the weevils Neochetina eichhorniae Warner, 1970, Neochetina bruchi Hustache, 1926 (Coleoptera: Brachyceridae), and a leaf moth Niphograpta albiguttalis (Warren, 1889) (Lepidoptera: Crambidae) were released at four sites in 1982–1987 for the biological control of water hyacinth in the Sacramento-San Joaquin River Delta. Here we report on statewide efforts to distribute the biological control agents outside the Delta and subsequent surveys to determine insect establishment. From 1987–2006, the three insects were redistributed to seven locations in five counties (Fresno, Los Angeles, Merced, Sacramento, and Santa Cruz) in California. Surveys in 2018–2020 found both Neochetina weevils at two locations in Merced County and one location in Sacramento County. No weevils were found at release locations in the upper San Joaquin River and associated waterways in western Fresno County or at the release location in Santa Cruz County. Plants at the release locations in Los Angeles County and eastern Fresno County had been eradicated and not sampled in this survey. These recoveries expand the known locations of Neochetina weevils in central California. The hyacinth moth, N. albiguttalis, was not recovered.

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加利福尼亚州凤眼莲Pontedria crassipes（C.Mart.）Solms（Pontedriaceae）的生物防治：1987–2006年生物防治剂的释放和重新分配

摘要水葫芦，Pontederia crassipes (C. Mart.)Solms (Pontederiaceae)是一种严重的水生杂草，存在于加利福尼亚和世界各地的湖泊、池塘和水道中。1982-1987年，在美国圣华金河三角洲4个地点放生了3只象鼻虫Neochetina eichhorniae Warner(1970)和Neochetina bruchi Hustache(1926)(鞘翅目:短叶蛾科)和1只叶蛾Niphograpta albiguttalis (Warren, 1889)(鳞翅目:Crambidae)(鳞翅目:Crambidae)，用于水信子的生物防治。在这里，我们报告了全州范围内在三角洲外分发生物防治剂的努力以及随后确定昆虫种群的调查。从1987年到2006年，这三种昆虫被重新分配到加利福尼亚州5个县(弗雷斯诺、洛杉矶、默塞德、萨克拉门托和圣克鲁斯)的7个地点。在2018-2020年的调查中，在默塞德县的两个地点和萨克拉门托县的一个地点发现了新切蒂纳象鼻虫。在弗雷斯诺县西部圣华金河上游及相关水道的释放地点和圣克鲁斯县的释放地点均未发现象鼻虫。在洛杉矶县和弗雷斯诺县东部释放地点的植物已经被根除，没有在这次调查中抽样。这些恢复扩大了加利福尼亚中部新象甲的已知位置。风信子蛾(N. albiguttalis)未被发现。

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来源期刊

Pan-Pacific Entomologist 生物-昆虫学

CiteScore

0.50

自引率

20.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Pan-Pacific Entomologist (ISSN 0031-0603) is published quarterly (January, April, July and October) by the Pacific Coast Entomological Society, in cooperation with the California Academy of Sciences. The journal serves as a refereed publication outlet and accepts manuscripts on all aspects of the biosystematics of insects and closely related arthropods, especially articles dealing with their taxonomy, biology, behavior, ecology, life history, biogeography and distribution. Membership in the Pacific Coast Entomological Society includes subscription to The Pan-Pacific Entomologist, and Society Proceedings typically appear in the October issue of each volume.