Infanticide (medium 2nd instar larva) by means of removal by Zatypota albicoxa under laboratory condition(46.4MB, 00:05:33)Shot Date: 2009/11/21 Shot Location: Ehime University | ||
 | species Zatypota albicoxa Key Words | |
|
Infanticide (medium 2nd instar larva) by means of removal by Zatypota albicoxa under laboratory condition(46.4MB, 00:05:33)Shot Date: 2009/11/21 Shot Location: Ehime University | ||
| species Zatypota albicoxa Key Words | |
|
Animalia >Arthropoda >Insecta >Hymenoptera >Ichneumonidae >Zatypota >
It is an animation of Zatypota albicoxa (Ichneumonidae) which is a koinobiont ectoparasitoid of Parasteatoda tepidariorum (Theridiidae), attacking already parasitized host spider and conducting infanticide under the artificial condition.
The wasp first paralyzed the spider with venom with its ovipositor inserted at between spider's coxae and subsequently rotated spider's abdomen to inspect whether it is already parasitized or not. Detecting the previous attached larva, the wasp started to remove it by means of ovipositor.
The part where the larva attaches to the spider was clarified owing to the ovipositor rubbed and pierced beneath it. The wasp then rubbed ovipositor persistently against the part the larva attached and succeeded in removal about two minutes later from detection. Because the removed larva brushed away by hind leg of the wasp and eventually dropping down was still alive, the wasp does not kill previous infestants by means of venom or sting.
After removal the wasp reinjected venom at between coxae, repeated the rubbing behavior for a while, lay an egg about 11 minutes later from removal and eventually flew away.
Takasuka, K. & Matsumoto, R. (2011) Infanticide by a solitary koinobiont ichneumonid ectoparasitoid of spiders. Naturwissenschaften, DOI: 10.1007/s00114-011-0797-9
(Data No.momo100119za01b)
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