干旱区生态环境知识资源中心(Arid): Female reproductive suppression in an Australian arid zone rodent, the spinifex hopping mouse

Arid

DOI	10.1111/jzo.12813
	Female reproductive suppression in an Australian arid zone rodent, the spinifex hopping mouse
	Berris, K. K.; Breed, W. G.; Moseby, K. E.; Carthew, S. M.
通讯作者	Berris, KK
来源期刊	JOURNAL OF ZOOLOGY
ISSN	0952-8369
EISSN	1469-7998
出版年	2020
卷号	312 期号:3 页码:163-173
英文摘要	The spinifex hopping mouse (Notomys alexis)is an Australian arid zone rodent that undergoes boom and bust population cycles in its natural environment. Most populations studied to date have been sympatric with exotic predators and introduced herbivores, likely affecting their population dynamics. Therefore, it is unclear whether high-density populations of hopping mice are regulated by purely extrinsic factors or whether intrinsic factors are also at play. We hypothesized that reproductive suppression of femaleN. alexismay occur in high-density populations as has been observed in some other rodent species. Reproductive condition of adult femaleN. alexiswas compared between a high-density population within the Arid Recovery reserve, where exotic predators and introduced herbivores are excluded, and a low-density population on adjacent pastoral properties (no exclusions). Trap success was 10 times higher inside the reserve than at pastoral sites, and no adult females were observed breeding in the reserve population, despite 26 % of females at pastoral sites recorded breeding. Our results indicate that adult femaleN. alexisin the high-density reserve population were reproductively suppressed, but the similar sex ratios in both populations and the high female body mass and body condition in the reserve indicated that this was not due to demographic differences between the two populations or food scarcity. Our study indicates that the 'busts' observed in arid zone rodent populations may be amplified due to the presence of exotic predators and/or grazing by introduced herbivores. We contend that prior to the introduction of exotic predators and introduced herbivores in Australia, the arid zone rodentN. alexiswould likely have been more abundant and intrinsic population regulation through female reproductive suppression may have played a larger role in population regulation.
英文关键词	Australia Muridae rodent exotic predators reproductive suppression population density arid environments Notomys alexis
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000550706400001
WOS关键词	POPULATION-DYNAMICS ; NOTOMYS-ALEXIS ; SMALL MAMMALS ; RAINFALL ; RABBIT ; MICE ; DIMORPHISM ; GRASSLAND ; PREDATORS ; MOVEMENTS
WOS类目	Zoology
WOS研究方向	Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325119
作者单位	[Berris, K. K.; Breed, W. G.] Univ Adelaide, Sch Biol Sci, Adelaide, SA, Australia; [Moseby, K. E.] Univ New South Wales, Ctr Ecosyst Sci, Sydney, NSW, Australia; [Moseby, K. E.] Arid Recovery, Roxby Downs, SA, Australia; [Carthew, S. M.] Charles Darwin Univ, Res Inst Environm & Livelihoods, Casuarina, NT, Australia
推荐引用方式 GB/T 7714	Berris, K. K.,Breed, W. G.,Moseby, K. E.,et al. Female reproductive suppression in an Australian arid zone rodent, the spinifex hopping mouse[J],2020,312(3):163-173.
APA	Berris, K. K.,Breed, W. G.,Moseby, K. E.,&Carthew, S. M..(2020).Female reproductive suppression in an Australian arid zone rodent, the spinifex hopping mouse.JOURNAL OF ZOOLOGY,312(3),163-173.
MLA	Berris, K. K.,et al."Female reproductive suppression in an Australian arid zone rodent, the spinifex hopping mouse".JOURNAL OF ZOOLOGY 312.3(2020):163-173.