干旱区生态环境知识资源中心(Arid): Asymmetrical intra-guild predation and niche differentiation in two pit-building antlions

Arid

DOI	10.1163/22244662-20191067
	Asymmetrical intra-guild predation and niche differentiation in two pit-building antlions
	Ovadia, Ofer; Scharf, Inon; Barkae, Erez David; Levi, Tanya; Alcalay, Yehonatan
通讯作者	Ovadia, O (corresponding author), Ben Gurion Univ Negev, Dept Life Sci, Beer Sheva, Israel. ; Scharf, I (corresponding author), Tel Aviv Univ, Fac Life Sci, Sch Zool, Tel Aviv, Israel.
来源期刊	ISRAEL JOURNAL OF ECOLOGY & EVOLUTION
ISSN	1565-9801
EISSN	2224-4662
出版年	2019
卷号	66 期号:1-2 页码:82-90
英文摘要	Co-occurring species often compete with each other directly and indirectly. Intra-guild predation (IGP) is an extreme manifestation of direct competition, which involves the attack, killing and eating of potential competitors. We studied the competitive interactions between two pit-building antlion species that co-occur in the Israeli desert: Myrmeleon hyalinus residing in the more productive sandy soil, and Cueta lineosa solely inhabiting poorer loess soils. To understand the mechanisms driving C. lineosa away from the more productive habitat, we explored the factors triggering IGP of one antlion species on the other. We tested whether IGP is affected by soil type, depth and temperature. IGP was asymmetrical with M. hyalinus preying on C. lineosa, and it intensified as the size difference favoring the former increased. Interactive rather than additive effects governed IGP, which was lowest in sandy soil combined with low temperature, and highest in shallow loess soil. C. lineosa possesses a smaller head and thorax relative to its abdomen compared to M. hyalinus, providing a possible explanation for the advantage of M. hyalinus in direct competition. We then focused on the weaker competitor, C. lineosa, examining how it copes with competition induced by M. hyalinus. Both the growth and survival rates of C. lineosa declined in the presence of M. hyalinus. The asymmetrical IGP C. lineosa experiences from M. hyalinus combined with its competitive inferiority may explain why it is mostly found in poor habitats, while its intra-guild competitor is abundant in the more productive habitats.
英文关键词	cannibalism desert ecology interference competition Myrmeleontidae sit-and-wait predator trap-building predator
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000569014800011
WOS关键词	DEPENDENT HABITAT SELECTION ; INTRASPECIFIC COMPETITION ; PREY-CAPTURE ; TRADE-OFF ; ANT-LIONS ; CANNIBALISM ; DENSITY ; LARVAE ; DYNAMICS ; DESERT
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
来源机构	Ben-Gurion University of the Negev
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369347
作者单位	[Ovadia, Ofer; Barkae, Erez David; Levi, Tanya; Alcalay, Yehonatan] Ben Gurion Univ Negev, Dept Life Sci, Beer Sheva, Israel; [Scharf, Inon] Tel Aviv Univ, Fac Life Sci, Sch Zool, Tel Aviv, Israel
推荐引用方式 GB/T 7714	Ovadia, Ofer,Scharf, Inon,Barkae, Erez David,et al. Asymmetrical intra-guild predation and niche differentiation in two pit-building antlions[J]. Ben-Gurion University of the Negev,2019,66(1-2):82-90.
APA	Ovadia, Ofer,Scharf, Inon,Barkae, Erez David,Levi, Tanya,&Alcalay, Yehonatan.(2019).Asymmetrical intra-guild predation and niche differentiation in two pit-building antlions.ISRAEL JOURNAL OF ECOLOGY & EVOLUTION,66(1-2),82-90.
MLA	Ovadia, Ofer,et al."Asymmetrical intra-guild predation and niche differentiation in two pit-building antlions".ISRAEL JOURNAL OF ECOLOGY & EVOLUTION 66.1-2(2019):82-90.