干旱区生态环境知识资源中心(Arid): Energy density and its seasonal variation in desert beetles

Arid

DOI	10.1016/S0140-1963(03)00079-X
	Energy density and its seasonal variation in desert beetles
	Chen, XL; Thompson, MB; Dickman, CR
通讯作者	Thompson, MB
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2004
卷号	56 期号:3 页码:559-567
英文摘要	Energy densities of adult beetles from the Simpson Desert, central Australia, were measured to provide a basis for understanding seasonal energy allocation, prey switching and selection among insectivores, and variation among taxa. The mean energy density of adult beetles is 21.14 +/- 2.29 J mg(-1) ash-free dry weight (AFDW), energy density varying significantly among families. The energy density of beetles exhibits significant seasonal variation, and is maximum in autumn (22.13 +/- 2.24 J mg(-1) AFDW) and minimum in spring (19.84 +/- 2.03 J mg(-1) AFDW). Also, energy density is higher in the abdomen (21.98 +/- 2.68 J mg(-1) AFDW) than the thorax (20.56 +/- 2.81 J mg(-1) AFDW), head (20.11 +/- 2.88 J mg(-1) AFDW) and legs (19.62 +/- 2.91 J mg(-1) AFDW); each body region changes seasonally, as it does for the whole beetle. Energy density is correlated negatively with body water content (r = -0.559, P < 0.001). Seasonal shifts in energy density among taxa and body components indicate different strategies for conservation and use of energy among desert beetles. Such shifts may also explain prey switching and selection among insectivores. (C) 2003 Elsevier Ltd. All rights reserved.
英文关键词	energy density arid environment coleoptera prey quality insectivore beetle
类型	Article
语种	英语
国家	Australia ; Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000187882600011
WOS关键词	INSECTIVOROUS MARSUPIALS ; POPULATION-DYNAMICS ; CENTRAL AUSTRALIA ; SIMPSON DESERT ; ARID AUSTRALIA ; PREY ; SIZE ; DASYURIDAE ; SELECTION ; DIETS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/147163
作者单位	(1)Univ Sydney, Sch Biol Sci, Sydney, NSW 2006, Australia;(2)Univ Sydney, Inst Wildlife Res, Sydney, NSW 2006, Australia;(3)Xiamen Univ, Dept Biol, Xiamen, Peoples R China
推荐引用方式 GB/T 7714	Chen, XL,Thompson, MB,Dickman, CR. Energy density and its seasonal variation in desert beetles[J],2004,56(3):559-567.
APA	Chen, XL,Thompson, MB,&Dickman, CR.(2004).Energy density and its seasonal variation in desert beetles.JOURNAL OF ARID ENVIRONMENTS,56(3),559-567.
MLA	Chen, XL,et al."Energy density and its seasonal variation in desert beetles".JOURNAL OF ARID ENVIRONMENTS 56.3(2004):559-567.