Aarhus University Seal

Relatedness facilitates cooperation in the subsocial spider, Stegodyphus tentoriicola

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Standard

Relatedness facilitates cooperation in the subsocial spider, Stegodyphus tentoriicola. / Ruch, Jasmin; Heinrich, Lisa; Bilde, T. et al.

In: B M C Evolutionary Biology, Vol. 9, 2009.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

APA

CBE

MLA

Vancouver

Author

Ruch, Jasmin ; Heinrich, Lisa ; Bilde, T. et al. / Relatedness facilitates cooperation in the subsocial spider, Stegodyphus tentoriicola. In: B M C Evolutionary Biology. 2009 ; Vol. 9.

Bibtex

@article{bcf817301fa311dfb95d000ea68e967b,
title = "Relatedness facilitates cooperation in the subsocial spider, Stegodyphus tentoriicola",
abstract = "BackgroundCooperative hunting and foraging in spiders is rare and prone to cheating such that the actions of selfish individuals negatively affect the whole group. The resulting social dilemma may be mitigated by kin selection since related individuals lose indirect fitness benefits by acting selfishly. Indeed, cooperation with genetic kin reduces the disadvantages of within-group competition in the subsocial spider Stegodyphus lineatus, supporting the hypothesis that high relatedness is an important pre-adaptation in the transition to sociality in spiders. In this study we examined the consequences of group size and relatedness on cooperative feeding in the subsocial spider S. tentoriicola, a species suggested to be at the transition to permanent sociality.ResultsWe formed groups of 3 and 6 spiders that were either siblings or non-siblings. We found that increasing group size negatively affected feeding efficiency but that these negative effects were reduced in sib-groups. Sib groups were more likely to feed cooperatively and all group members grew more homogenously than groups of unrelated spiders. The measured differences did not translate into differential growth or mortality during the experimental period of 8 weeks.ConclusionThe combination of our results with those from previous studies indicates that the conflict between individual interests and group interests may be reduced by nepotism and that the latter promote the maintenance of the social community.",
author = "Jasmin Ruch and Lisa Heinrich and T. Bilde and Jutta Schnieder",
year = "2009",
doi = "10.1186/1471-2148-9-257",
language = "English",
volume = "9",
journal = "B M C Evolutionary Biology",
issn = "1471-2148",
publisher = "BioMed Central Ltd.",

}

RIS

TY - JOUR

T1 - Relatedness facilitates cooperation in the subsocial spider, Stegodyphus tentoriicola

AU - Ruch, Jasmin

AU - Heinrich, Lisa

AU - Bilde, T.

AU - Schnieder, Jutta

PY - 2009

Y1 - 2009

N2 - BackgroundCooperative hunting and foraging in spiders is rare and prone to cheating such that the actions of selfish individuals negatively affect the whole group. The resulting social dilemma may be mitigated by kin selection since related individuals lose indirect fitness benefits by acting selfishly. Indeed, cooperation with genetic kin reduces the disadvantages of within-group competition in the subsocial spider Stegodyphus lineatus, supporting the hypothesis that high relatedness is an important pre-adaptation in the transition to sociality in spiders. In this study we examined the consequences of group size and relatedness on cooperative feeding in the subsocial spider S. tentoriicola, a species suggested to be at the transition to permanent sociality.ResultsWe formed groups of 3 and 6 spiders that were either siblings or non-siblings. We found that increasing group size negatively affected feeding efficiency but that these negative effects were reduced in sib-groups. Sib groups were more likely to feed cooperatively and all group members grew more homogenously than groups of unrelated spiders. The measured differences did not translate into differential growth or mortality during the experimental period of 8 weeks.ConclusionThe combination of our results with those from previous studies indicates that the conflict between individual interests and group interests may be reduced by nepotism and that the latter promote the maintenance of the social community.

AB - BackgroundCooperative hunting and foraging in spiders is rare and prone to cheating such that the actions of selfish individuals negatively affect the whole group. The resulting social dilemma may be mitigated by kin selection since related individuals lose indirect fitness benefits by acting selfishly. Indeed, cooperation with genetic kin reduces the disadvantages of within-group competition in the subsocial spider Stegodyphus lineatus, supporting the hypothesis that high relatedness is an important pre-adaptation in the transition to sociality in spiders. In this study we examined the consequences of group size and relatedness on cooperative feeding in the subsocial spider S. tentoriicola, a species suggested to be at the transition to permanent sociality.ResultsWe formed groups of 3 and 6 spiders that were either siblings or non-siblings. We found that increasing group size negatively affected feeding efficiency but that these negative effects were reduced in sib-groups. Sib groups were more likely to feed cooperatively and all group members grew more homogenously than groups of unrelated spiders. The measured differences did not translate into differential growth or mortality during the experimental period of 8 weeks.ConclusionThe combination of our results with those from previous studies indicates that the conflict between individual interests and group interests may be reduced by nepotism and that the latter promote the maintenance of the social community.

U2 - 10.1186/1471-2148-9-257

DO - 10.1186/1471-2148-9-257

M3 - Journal article

C2 - 19860868

VL - 9

JO - B M C Evolutionary Biology

JF - B M C Evolutionary Biology

SN - 1471-2148

ER -