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The egg sac of Benoitia lepida (Araneae: Agelenidae): structure, placement and the function of its layers
Toft, Soren1; Lubin, Yael2
通讯作者Toft, Soren
来源期刊JOURNAL OF ARACHNOLOGY
ISSN0161-8202
EISSN1937-2396
出版年2018
卷号46期号:1页码:35-39
英文摘要

We describe the remarkable egg sac of Benoitia lepida (O.P.-Cambridge, 1876) (Agelenidae) from the Negev Desert, Israel. It consists of four layers: (from outside) a papery envelope, an outer loose silk layer, a "dirt layer’’, and an inner flocculent silk layer surrounding the eggs. The dirt layer consists of loess soil, and may include stones, snail shells, or twigs from the surroundings. Some sacs hang from a silken string over the female’s web sheet, attached to barrier threads or overhanging vegetation. In these "hanging sacs’’, the outer papery wall is shiny white and covers the inner layers completely. Other sacs ("attached sacs’’) are attached to a top branch of a shrub, away from the female’s web. These sacs often have little or no outer papery envelope; the outer silk wrapping encloses the branch, and the sac may be dull brown in color. We studied the species at two sites; at one the hanging sac type predominated, while at the other the attached type was most common. A field experiment revealed that the dirt layer is effective in protecting the sacs against predation from ants but had no effect on spider predators of the egg sacs.


英文关键词Egg cocoon manipulative experiment anti-predatory function Negev desert
类型Article
语种英语
国家Denmark ; Israel
收录类别SCI-E
WOS记录号WOS:000429679600007
WOS关键词SPIDER COCOONS ; ARANEIDAE ; PREDATORS ; SILK
WOS类目Entomology
WOS研究方向Entomology
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/2XILL650/210503
作者单位1.Aarhus Univ, Dept Biosci, Ny Munkegade 116, DK-8000 Aarhus C, Denmark;
2.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Sede Boqer Campus, IL-8499000 Midreshet Ben Gurion, Israel
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GB/T 7714
Toft, Soren,Lubin, Yael. The egg sac of Benoitia lepida (Araneae: Agelenidae): structure, placement and the function of its layers[J]. Ben-Gurion University of the Negev,2018,46(1):35-39.
APA Toft, Soren,&Lubin, Yael.(2018).The egg sac of Benoitia lepida (Araneae: Agelenidae): structure, placement and the function of its layers.JOURNAL OF ARACHNOLOGY,46(1),35-39.
MLA Toft, Soren,et al."The egg sac of Benoitia lepida (Araneae: Agelenidae): structure, placement and the function of its layers".JOURNAL OF ARACHNOLOGY 46.1(2018):35-39.
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