Competitive displacement of the native species Bursaphelenchus mucronatus by an alien species Bursaphelenchus xylophilus (Nematoda: Aphelenchida: Aphelenchoididae): a case of successful invasion

doi:10.1007/s10530-008-9225-2

	Competitive displacement of the native species Bursaphelenchus mucronatus by an alien species Bursaphelenchus xylophilus (Nematoda: Aphelenchida: Aphelenchoididae): a case of successful invasion
	Cheng, Xin-Yue 2; Xie, Pei-Zhen 2; Cheng, Fei-Xue 2; Xu, Ru-Mei 2; Xie, Bing-Yan 1
刊名	BIOLOGICAL INVASIONS
	2009
卷号	11 期号:2 页码:205-213
关键词	Bioinvasion Ecological displacement Fecundity Interspecies competition Pinewood nematodes China
ISSN号	1387-3547
DOI	10.1007/s10530-008-9225-2
通讯作者	Cheng, Xin-Yue
英文摘要	The presence of alien invasive species has serious negative impact on endemic biodiversity, especially on native species that occupy the same niche in the ecosystem. To study the influence of the alien invasive species Bursaphelenchus xylophilus on its native sister species B. mucronatus, the two nematode species were mix-cultured in a fungal mat and mix-inoculated into a susceptible host. By comparing the propagation parameters of both species under competitive and noncompetitive conditions it was shown that the propagation level of B. xylophilus was clearly higher than that of B. mucronatus under laboratory culture. Furthermore, the propagation capacity of B. xylophilus under competitive conditions was much higher than that under noncompetitive conditions, both in laboratory culture and with host inoculation. Bursaphelenchus xylophilus also excluded B. mucronatus when the two species were cultured as a mixture for a longer time. The relative abundance ratios of the two species in natural pinewoods were also determined by random sampling of dying pine trees from regions with different invasion histories. It was noted that with an increase in invasion years the distribution frequency of B. xylophilus increased while that of B. mucronatus decreased. Experimental tests verified our hypothesis that because of its high fecundity and strong competitive ability, the invasive species B. xylophilus out-competed the native species B. mucronatus and displaced it in natural ecosystems. The successful invasion of B. xylophilus is attributed to competitive displacement, which may be one of the ecological invasive mechanisms.
学科主题	Biodiversity Conservation ; Ecology ; BIODIVERSITY CONSERVATION ; ECOLOGY
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000262490100005
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/101217]
专题	蔬菜花卉研究所_植物保护研究室
作者单位	1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China 2.Beijing Normal Univ, Coll Life Sci, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Xin-Yue,Xie, Pei-Zhen,Cheng, Fei-Xue,et al. Competitive displacement of the native species Bursaphelenchus mucronatus by an alien species Bursaphelenchus xylophilus (Nematoda: Aphelenchida: Aphelenchoididae): a case of successful invasion[J]. BIOLOGICAL INVASIONS,2009,11(2):205-213.
APA	Cheng, Xin-Yue,Xie, Pei-Zhen,Cheng, Fei-Xue,Xu, Ru-Mei,&Xie, Bing-Yan.(2009).Competitive displacement of the native species Bursaphelenchus mucronatus by an alien species Bursaphelenchus xylophilus (Nematoda: Aphelenchida: Aphelenchoididae): a case of successful invasion.BIOLOGICAL INVASIONS,11(2),205-213.
MLA	Cheng, Xin-Yue,et al."Competitive displacement of the native species Bursaphelenchus mucronatus by an alien species Bursaphelenchus xylophilus (Nematoda: Aphelenchida: Aphelenchoididae): a case of successful invasion".BIOLOGICAL INVASIONS 11.2(2009):205-213.