Feeding experience affects web relocation and investment in web threads in an orb-web spider, Cyclosa argenteoalba

Article Abstract:

Orb-web spiders at both familiar and unfamiliar sites relocate their webs at a higher rate than the naturally occurring rate in response to prey removal. Spiders that have not relocated the previous day are more likely to stay at their current web site, although there is no clear difference in the expected prey capture rate. It was established that there is an increase in the total length of the web thread on the second day at a new site. This indicates that spiders initially limit their investment at an unfamiliar site, to restrict the risk of investing too much in a site with minimal return.

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Competitive foraging in the social spider Stegodyphus dumicola

Article Abstract:

Factors influencing the structure of foraging societies of the social spider Stegodyphus dumicola were examined, including food distribution and consumption, and whether certain spiders gain more food. Large spiders were found to have a competitive advantage in obtaining preferred positions, and were able to ingest food faster than smaller spiders. Distribution of food among colony members in this way could result in large size differences between colony members.

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