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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
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ISSN | 0161-8202 |
EISSN | 1937-2396 |
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 |
推荐引用方式 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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