Non-target plant use by a weed biocontrol agent in idaho: host expansion or opportunistic behavior?

被引:7
作者
Clement, S. L. [1 ]
Smith, L. J. [2 ]
Prena, J. [3 ]
Kleene, M. D. [4 ]
Johnson, R. C. [1 ]
机构
[1] Washington State Univ, ARS, USDA, Plant Germplasm Intro & Testing Res Unit, Pullman, WA 99164 USA
[2] Univ Idaho, Lewiston, ID USA
[3] ARS, USDA, Systemat Entomol Lab, Natl Museum Nat Hist, Washington, DC USA
[4] Washington State Univ, Dept Crop & Soil Sci, Pullman, WA 99164 USA
关键词
Larinus curtus; yellow starthistle; weed biocontrol; safflower; non-target host plant; host-specificity; SOLSTITIALIS L ASTERACEAE; YELLOW STARTHISTLE; BIOLOGICAL-CONTROL; SPECIFICITY; CURCULIONIDAE; TEPHRITIDAE; COLEOPTERA; CANDIDATE;
D O I
10.1080/09583150902722791
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Larinus curtus Hochhuth (Coleoptera: Curculionidae) was first introduced into the western United States from Greece for the biological control of yellow starthistle (YST), Centaurea solstitialis L., in 1992. The discovery of L. curtus adults in the open flowerheads of safflower (SF), Carthamus tinctorius L., near Lewiston, Idaho in 2007 suggested this weevil might be expanding its host range to include a non-target crop species closely related to YST. In 2008 field plots near the 2007 observation site, 92 L. curtus adults fed in open SF flowerheads (pollen feeding and minor feeding on corolla tubes). No eggs were found in the ovarioles of 19 pollen-feeding females. No eggs, larvae, or evidence of larval feeding were detected in 39 tagged SF capitula, and no adults emerged from approximately 7,135 post-flowering SF capitula. These collective results are not indicative of an expanding developmental host-range of L. curtus. Also, they are consistent with pre-release host-specificity test results.
引用
收藏
页码:455 / 461
页数:7
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