Differences in Preference and Performance of the Water Lily Leaf Beetle, Galerucella nymphaeae Populations on Native and Introduced Aquatic Plants

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	Differences in Preference and Performance of the Water Lily Leaf Beetle, Galerucella nymphaeae Populations on Native and Introduced Aquatic Plants
	Ding, Jianqing 1,2; Blossey, Bernd 1
刊名	ENVIRONMENTAL ENTOMOLOGY
	2009-12-01
卷号	38 期号:6 页码:1653-1660
关键词	invasion insect-plant interaction host preference and performance Trapa natans Nuphar lutea
ISSN号	0046-225X
英文摘要	Plant invasions represent ecological opportunities for herbivorous insects able to exploit novel host plants. The availability of new hosts and rapid adaptations may lead to host race formation and ultimately speciation. We studied potential host race formation in the water lily leaf beetle, Galerucella nymphaeae, in response to invasion by water chestnut, Trapa natans, in eastern North America. This leaf beetle is well suited for such studies because previous work showed that different herbivore populations follow different "evolutionary pathways" and specialize locally in response to differences in habitat preferences and host plant availability. We compared host preference and performance of G. nymphaeae offspring originating from T natans and offspring of individuals originating from an ancestral host Nuphar lutea, yellow water lily, on T. natans and three native hosts (N. lutea, Nympheae odorata, and Brasenia schreberi). Regardless of origin (Trapa or Nuphar), adults strongly preferred their native host, N. lutea, over T. natans. Although laboratory survival rates (larva to pupa) were extremely high (80%) regardless of origin or host offered, survival rates in a common garden were greatly reduced, particularly for T natans (24%) and to a lesser extent on N. lutea (54%), regardless of beetle origin. Larval drowning during more frequent leaf changes when developing on small Trapa leaves seems to be responsible for this difference. Preference of females for N. lutea is beneficial considering the much higher larval survival on the ancestral host. Abundant T natans where the plant is invasive provides an alternative food source that beetles can use after egg/larval loads on their preferred host reach carrying capacity, but this utilization comes at a cost of high larval mortality.
资助项目	EPA[X-982710-00]
WOS研究方向	Entomology
语种	英语
出版者	ENTOMOLOGICAL SOC AMER
WOS记录号	WOS:000272581400017
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/1006]
专题	中国科学院武汉植物园
通讯作者	Ding, Jianqing
作者单位	1.Cornell Univ, Dept Nat Resources, Ithaca, NY 14850 USA 2.Chinese Acad Sci, Wuhan Bot Garden Inst, Invas Ecol & Biocontrol Lab, Wuhan 430074, Hubei Province, Peoples R China
推荐引用方式 GB/T 7714	Ding, Jianqing,Blossey, Bernd. Differences in Preference and Performance of the Water Lily Leaf Beetle, Galerucella nymphaeae Populations on Native and Introduced Aquatic Plants[J]. ENVIRONMENTAL ENTOMOLOGY,2009,38(6):1653-1660.
APA	Ding, Jianqing,&Blossey, Bernd.(2009).Differences in Preference and Performance of the Water Lily Leaf Beetle, Galerucella nymphaeae Populations on Native and Introduced Aquatic Plants.ENVIRONMENTAL ENTOMOLOGY,38(6),1653-1660.
MLA	Ding, Jianqing,et al."Differences in Preference and Performance of the Water Lily Leaf Beetle, Galerucella nymphaeae Populations on Native and Introduced Aquatic Plants".ENVIRONMENTAL ENTOMOLOGY 38.6(2009):1653-1660.