Kleptoparasites or commensals? Effects of Argyrodes antipodianus (Araneae: Theridiidae) on Nephila plumipes (Araneae: Tetragnathidae)

@article{Grostal1997KleptoparasitesOC,
  title={Kleptoparasites or commensals? Effects of Argyrodes antipodianus (Araneae: Theridiidae) on Nephila plumipes (Araneae: Tetragnathidae)},
  author={Paul Grostal and David Evans Walter},
  journal={Oecologia},
  year={1997},
  volume={111},
  pages={570-574}
}
Argyrodes antipodianus is a small kleptobiotic spider that steals prey from webs of the large orb-weaving spider Nephila plumipes, and sometimes removes the web itself. We used experiments in a greenhouse to test how the presence of the kleptobiont, differences in food availability, and web damage affected fitness of the web owner. After 49 days, N. plumipes with four A. antipodianus on their webs gained 55% less weight and relocated their webs 4.5 times as often as spiders with no kleptobionts… 
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TLDR
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TLDR
This is the first study to show that Argyrodes spiders alter their foraging tactics depending on hunger level, prey type, or the presence of the host, and may maximize their energy gain and minimize predation risk in different circumstances.
Host selection by a kleptobiotic spider
TLDR
It is concluded that when a kleptobiotic organism has a choice of various host species, it will opt for the least risky host that presents the highest rate of availability of food items.
Memory of prey larders in golden orb-web spiders, Nephila clavipes (Araneae: Nephilidae)
TLDR
It is suggested that N. clavipes form memories of the size of the larders they have accumulated, and that they use those memories to regulate recovery efforts when the lARDers are pilfered.
ARGYRODES: PHYLOGENY, SOCIALITY AND INTERSPECIFIC INTERACTIONS—A REPORT ON THE ARGYRODES SYMPOSIUM, BADPLAAS 2001
TLDR
It is concluded that Argyrodes forms a monophyletic group within the Theridiidae, and that there are clear monophyletsic clades within the genus (already identified as species groups) that appear to share behavioral characteristics.
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