Time till death affects spider mobility and web-building behavior during web construction in an orb-web spider

Current Zoology
Mylène AnotauxAlain Pasquet

Abstract

It is well known that age influences organism mobility. This was demonstrated in vertebrates (such as mammals and birds) but has been less studied in invertebrates with the exception ofDrosophilaand the nematodeCaenorhabditis elegans.Here we studied the influence of age on the mobility of the orb-weaving spiderZygiella x-notataduring web construction. The orb-web is a good model because it has a characteristic geometrical structure and video tracking can be used to easily follow the spider's movements during web building. We investigated the influence of age (specifically chronological age, life span, and time till death) on different parameters of spider mobility during the construction of the capture spiral (distance traveled, duration of construction, spider velocity, spider movement, and spider inactivity) with a generalized linear model (GLM) procedure adjusted for the spider mass. The results showed that neither chronological age, nor life span affected the mobility parameters. However, when the time till death decreased, there was a decrease in the distance traveled, the duration of the construction of the capture spiral, and the spider movement. The spider velocity and the time of inactivity were not affected. These res...Continue Reading

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Citations

Jan 27, 2019·Journal of Ethology·Alain PasquetMylène Anotaux
Apr 30, 2021·Die Naturwissenschaften·Tom MulderFritz Vollrath

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