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Zatypota albicoxa showing reclining style to entice and attack her host, Parasteatoda tepidariorum Details
Zatypota albicoxa showing reclining style to entice and attack her host, Parasteatoda tepidariorum
Digital video image showing the reclining style of Zatypota albicoxa (Ichneumonidae) lying on the dorsum. The web of host spider, Parasteatoda tepidariorum (Theridiidae), is composed of an irregular, three dimensional web with numerous vertical gumfoot threads. Z. albicoxa lay on her dorsum on the floor under the host web, pulling at the vertical thread with her fore and mid legs to entice the spider. Below is the abstract from the article containing this video: Lying on the dorsum: unique host-attacking behaviour of Zatypota albicoxa (Hymenoptera, Ichneumonidae) Keizo Takasuka, Rikio Matsumoto Journal of Ethology (in press) doi:10.1007/s10164-010-0263-8 A unique host enticing behaviour was observed for the first time in Zatypota albicoxa (Walker), which parasitizes the house spider, Parasteatoda tepidariorum (Koch), weaving irregular, three-dimensional webs. One female wasp lay on her dorsum on the floor and grasped one of the vertical gumfoot threads with her legs (reclining-style). The wasp picked the thread with her legs, feigning a captured and struggling prey. Although this behaviour seems to be a variety of the ambush style, it is quite unique in that the wasp wandered under the web, touched the gumfoot directly and lay on her dorsum on the floor. These behaviours are similar to that of a wandering and captured wingless insect, an adaptation to the host being hidden in a complex web. As the wasp touched the gumfoot directly, this suggests the possession of behavioural or morphological mechanisms for avoiding entrapment by the sticky masses on the web. For detail, please acccess (The copyright of movie is reserved by each person who registered the movie.)
Channel:
iTunes
Video Length:
2m 18s
Date Found:
Mon, Feb 21 2011 10:17 AM
Category:
Science
Date Produced:
Sun, Feb 20 2011 10:00 AM
View Count:
0
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