Arid
DOI10.1098/rsos.171872
Assessing the potential for intraguild predation among taxonomically disparate micro-carnivores: marsupials and arthropods
Potter, Tamara I.1; Greenville, Aaron C.1,2,3; Dickman, Christopher R.1,2,3
通讯作者Potter, Tamara I.
来源期刊ROYAL SOCIETY OPEN SCIENCE
ISSN2054-5703
出版年2018
卷号5期号:5
英文摘要

Interspecific competition may occur when resources are limited, and is often most intense between animals in the same ecological guild. Intraguild predation (IGP) is a distinctive form of interference competition, where a dominant predator selectively kills subordinate rivals to gain increased access to resources. However, before IGP can be identified, organisms must be confirmed as members of the same guild and occur together in space and time. The lesser hairy-footed dunnart (Sminthopsis youngsoni, Dasyuridae) is a generalist marsupial insectivore in arid Australia, but consumes wolf spiders (Lycosa spp., Lycosidae) disproportionately often relative to their availability. Here, we test the hypothesis that this disproportionate predation is a product of frequent encounter rates between the interactants due to high overlap in their diets and use of space and time. Diet and prey availability were determined using direct observations and invertebrate pitfall trapping, microhabitat use by tracking individuals of both species-groups, and temporal activity using spotlighting and camera traps. Major overlap (greater than 75% similarity) was found in diet and temporal activity, and weaker overlap in microhabitat use. Taken together, these findings suggest reasonable potential, for the first time, for competition and intraguild predation to occur between taxa as disparate as marsupials and spiders.


英文关键词intraguild predation marsupials micro-carnivores Simpson Desert spiders
类型Article
语种英语
国家Australia
收录类别SCI-E
WOS记录号WOS:000433498000039
WOS关键词ARID CENTRAL AUSTRALIA ; SMINTHOPSIS-YOUNGSONI MARSUPIALIA ; GUILD STRUCTURE ; SMALL MAMMALS ; INSECTIVOROUS MARSUPIALS ; ECOLOGICAL COMMUNITIES ; DASYURID MARSUPIALS ; HABITAT SELECTION ; ACTIVITY PATTERNS ; RATTUS-LUTREOLUS
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212843
作者单位1.Univ Sydney, Sch Life & Environm Sci, Desert Ecol Res Grp, Sydney, NSW, Australia;
2.Univ Sydney, Natl Environm Sci Programme Threatened Species Re, Sydney, NSW, Australia;
3.Univ Sydney, Long Term Ecol Res Network, Terr Ecosyst Res Network, Sydney, NSW, Australia
推荐引用方式
GB/T 7714
Potter, Tamara I.,Greenville, Aaron C.,Dickman, Christopher R.. Assessing the potential for intraguild predation among taxonomically disparate micro-carnivores: marsupials and arthropods[J],2018,5(5).
APA Potter, Tamara I.,Greenville, Aaron C.,&Dickman, Christopher R..(2018).Assessing the potential for intraguild predation among taxonomically disparate micro-carnivores: marsupials and arthropods.ROYAL SOCIETY OPEN SCIENCE,5(5).
MLA Potter, Tamara I.,et al."Assessing the potential for intraguild predation among taxonomically disparate micro-carnivores: marsupials and arthropods".ROYAL SOCIETY OPEN SCIENCE 5.5(2018).
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