Benefits of group living include increased feeding efficiency and lower mass loss during desiccation in the social and inbreeding spider Stegodyphus dumicola

Show simple item record Vanthournout, Bram Greve, Michelle Bruun, Anne Bechsgaard, Jesper Overgaard, Johannes Bilde, Trine 2016-05-16T06:57:44Z 2016-05-16T06:57:44Z 2016-02-02
dc.description.abstract Group living carries a price: it inherently entails increased competition for resources and reproduction, and may also be associated with mating among relatives, which carries costs of inbreeding. Nonetheless, group living and sociality is found in many animals, and understanding the direct and indirect benefits of cooperation that override the inherent costs remains a challenge in evolutionary ecology. Individuals in groups may benefit from more efficient management of energy or water reserves, for example in the form of reduced water or heat loss from groups of animals huddling, or through reduced energy demands afforded by shared participation in tasks. We investigated the putative benefits of group living in the permanently social spider Stegodyphus dumicola by comparing the effect of group size on standard metabolic rate, lipid/protein content as a body condition measure, feeding efficiency, per capita web investment, and weight/water loss and survival during desiccation. Because energetic expenditure is temperature sensitive, some assays were performed under varying temperature conditions. We found that feeding efficiency increased with group size, and the rate of weight loss was higher in solitary individuals than in animals in groups of various sizes during desiccation. Interestingly, this was not translated into differences in survival or in standard metabolic rate. We did not detect any group size effects for other parameters, and group size effects did not co-vary with experimental temperature in a predictive manner. Both feeding efficiency and mass loss during desiccation are relevant ecological factors as the former results in lowered predator exposure time, and the latter benefits social spiders which occupy arid, hot environments. en_ZA
dc.description.department Plant Science en_ZA
dc.description.librarian am2016 en_ZA
dc.description.sponsorship The European Research Council (ERC StG-2011-282163 to TB), by a Sapere Aude DFF-Starting grant (to JO) from the Danish Council for Independent Research and by the National Research Foundation(KIC14081491602toMG). en_ZA
dc.description.uri en_ZA
dc.identifier.citation Vanthournout B, Greve M, Bruun A, Bechsgaard J, Overgaard J and Bilde T (2016) Benefits of Group Living Include Increased Feeding Efficiency and Lower Mass Loss during Desiccation in the Social and Inbreeding Spider Stegodyphus dumicola. Front. Physiol .7:18. DOI: 10.3389/fphys.2016.00018. en_ZA
dc.identifier.issn 1664-042X
dc.identifier.other 10.3389/fphys.2016.00018
dc.language.iso en en_ZA
dc.publisher Frontiers Research Foundation en_ZA
dc.rights © 2015 Authors. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). en_ZA
dc.subject Sociality en_ZA
dc.subject Spider en_ZA
dc.subject Group living en_ZA
dc.subject Ecophysiology en_ZA
dc.subject Temperature dependent effects en_ZA
dc.title Benefits of group living include increased feeding efficiency and lower mass loss during desiccation in the social and inbreeding spider Stegodyphus dumicola en_ZA
dc.type Article en_ZA

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