Performance of Agasicles hygrophila (Coleoptera: Chrysomelidae), a biological control agent of invasive alligator weed, at low non-freezing temperatures

doi:10.1007/s10530-010-9932-3

CORC > 中国农业科学院 > 植物保护研究所

	Performance of Agasicles hygrophila (Coleoptera: Chrysomelidae), a biological control agent of invasive alligator weed, at low non-freezing temperatures
	Guo, Jian-Ying 2; Fu, Jian-Wei 2,3; Xian, Xiao-Qing 2; Ma, Ming-Yong 2,4; Wan, Fang-Hao 1,2
刊名	BIOLOGICAL INVASIONS
	2012
卷号	14 期号:8 页码:1597-1608
关键词	Biological control of weeds Invasive alien species China
ISSN号	1387-3547
DOI	10.1007/s10530-010-9932-3
通讯作者	Guo, Jian-Ying
英文摘要	The flea beetle, Agasicles hygrophila, was introduced to control the alligator weed, Alternanthera philoxeroides, in southern China and redistributed for over 20 years. The beetle has succeeded in establishing local field populations. Temperature, especially extreme low temperature in winter, is hypothesized to be a key factor determining the distribution of A. hygrophila. We studied the adult reproduction and leaf consumption, egg hatching rate, larval and pupal survival and development of A. hygrophila in response to low non-freezing temperatures. Female and male adults of A. hygrophila survived at 4A degrees C for 11.4 and 14.2 days, respectively, and adult longevity increased with increasing temperature from 4 to 12A degrees C. Adult longevity was significantly longer at 12A degrees C than at 25A degrees C, and the fecundity at 12A degrees C was approximately 10% of that at 25A degrees C. When A. hygrophila eggs, first instar larvae and pupae were kept at 4-12A degrees C for 1, 4, 7 or 10 days, respectively, and then transferred to 25A degrees C, over one third of eggs hatched after cold treatment at 4A degrees C for 7 days, with an average egg development duration of 3.6 days excluding the cold treatment period. Egg hatching rate increased as temperature during the cold treatment increased and the cold treatment duration reduced. Eggs pretreated at 12A degrees C and those kept constantly at 25A degrees C did not differ in their hatching rates. The first instar larvae of A. hygrophila could not survive 12A degrees C or lower, and exposure to these low temperatures resulted in 100% mortality and a lifespan shorter than 1 day. Eclosion rate of A. hygrophila pupae was 71, 60, 24 and 15% after cold treatment at 4-12A degrees C for 1, 4, 7 and 10 days, respectively, which was lower than that at constant 25A degrees C (over 93%) but did not differ among the cold treatments. Comparing with the prediction in 1980s that A. hygrophila could not overwinter further north than the approximate position of the 9A degrees C isotherm, our recent survey showed that A. hygrophila has now distributed in the regions with January isotherms of 0-9A degrees C in China. These results indicated that A. hygrophila has the capacity to stand relatively low non-freezing temperatures for short durations, which would help it to overwinter and establish natural populations in some areas, especially in areas where protected cultivations are extensive and ambient temperatures are not as low as those in the open field.
学科主题	Biodiversity Conservation ; Ecology ; BIODIVERSITY CONSERVATION ; ECOLOGY
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000306334500007
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/12234]
专题	植物保护研究所
作者单位	1.Chinese Acad Agr Sci, Inst Plant Protect, Beijing 100081, Peoples R China 2.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing 100193, Peoples R China 3.Fujian Acad Agr Sci, Inst Plant Protect, Fuzhou 350013, Peoples R China 4.Hunan Acad Agr Sci, Inst Plant Protect, Changsha 412002, Hunan, Peoples R China
推荐引用方式 GB/T 7714	Guo, Jian-Ying,Fu, Jian-Wei,Xian, Xiao-Qing,et al. Performance of Agasicles hygrophila (Coleoptera: Chrysomelidae), a biological control agent of invasive alligator weed, at low non-freezing temperatures[J]. BIOLOGICAL INVASIONS,2012,14(8):1597-1608.
APA	Guo, Jian-Ying,Fu, Jian-Wei,Xian, Xiao-Qing,Ma, Ming-Yong,&Wan, Fang-Hao.(2012).Performance of Agasicles hygrophila (Coleoptera: Chrysomelidae), a biological control agent of invasive alligator weed, at low non-freezing temperatures.BIOLOGICAL INVASIONS,14(8),1597-1608.
MLA	Guo, Jian-Ying,et al."Performance of Agasicles hygrophila (Coleoptera: Chrysomelidae), a biological control agent of invasive alligator weed, at low non-freezing temperatures".BIOLOGICAL INVASIONS 14.8(2012):1597-1608.