AvilÃ©s, Leticia - University of British Columbia

个人简介

Postdoctoral Fellow, Research Training Group in the Analysis of Biological Diversification, University of Arizona, 1992-1994; PhD, Organismic and Evolutionary Biology, Harvard University,1992; Licentiate in Biological Sciences, Pontificia Universidad CatÃ³lica del Ecuador.

研究领域

I am interested in elucidating the forces responsible the association of lower level units into higher levels of organization and the consequences of such associations on the structure and dynamics of populations. Using a multilevel selection perspective and both empirical and theoretical approaches, current areas of research include: evolution of sociality, evolution of sex ratios in subdivided populations, and evolution of life history traits and local population dynamics in metapopulations.

近期论文

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Guevara, J. and L. AvilÃ©s. 2011. Influence of body size and level of cooperation on the prey capture efficiency of two sympatric social spiders exhibiting an included niche pattern. Functional Ecology, 25: 859-867 Guevara_and_Aviles_Func_Ecol_2011.pdf Guevara, J., M. Gonzaga, J. Vasconcellos-Netto, and L. AvilÃ©s. 2011. Sociality and resource use: Insights from a community of social spiders in Brazil. Behavioural Ecology, 22: 630-638 Guevara_et_al._Behav_Ecol-2011.pdf Samuk, K., E. LeDue & L. AvilÃ©s. 2011. Reduced maternal care in social spiders: Evidence of sociality mediated relaxed natural selection? Behavioral Ecology 23: 35-43 Guevara, J. and L. AvilÃ©s. 2009. Elevational changes in the composition of insects and other terrestrial arthropods at tropical latitudes: a comparison of multiple sampling methods and social spider diets. Insect Conservation and Diversity 2: 142-152 Link » Purcell, J. and L. AvilÃ©s. 2008. Gradients of precipitation and ant abundance may contribute to the altitudinal range limit of subsocial spiders. Proceedings of the Royal Society of London B 275: 2617-2625 Link » Yip, E.C., K.S. Powers, and L. AvilÃ©s. 2008. Cooperative capture of large prey solves scaling challenge faced by large spider societies. Proceedings of the National Academy of Sciences of the USA 105: 11818-11822 Link » AvilÃ©s, L., I. Agnarsson, P. Salazar, J. Purcell, G. Iturralde, E. Yip, K.S. Powers, and T. Bukowski. 2007. Altitudinal patterns of spider sociality and the biology of a new mid-elevation social Anelosimus species in Ecuador. American Naturalist 170: 783–792. Link » Guevara, J. & L. AvilÃ©s. 2007. Multiple sampling techniques confirm differences in insect size between low and high elevations that may influence levels of spider sociality. Ecology 88: 2015-2033 Link » Powers, K. and L. AvilÃ©s. 2007. The role of prey size and abundance in the geographical distribution of spider sociality. Journal of Animal Ecology 76: 995-1003 Link » Purcell, J. and L. AvilÃ©s. 2007. Smaller colonies and more solitary living mark higher elevation populations of a social spider. Journal of Animal Ecology 76: 590-597 Link » Agnarsson, I., AvilÃ©s, L., Coddington, J.A., Maddison, W.P. 2006. Social theridiid spiders – repeated origins of an evolutionary dead-end. Evolution 60: 2342-2351 Link » AvilÃ©s, L. and T. Bukowski. 2006. Group living and inbreeding depression in a subsocial spider. Proc. R. Soc. London 270: 157-163 Link » AvilÃ©s, L., J. Fletcher, and A.C. Cutter. 2004. The kin composition of social groups: Trading group size for degree of altruism. Am. Nat. 164:132-144 Link » AvilÃ©s, L. 2002. Solving the freeloaders paradox: Genetic associations and frequency dependent selection in the evolution of cooperation among nonrelatives. PNAS 99(22):14268-14273 Link » AvilÃ©s, L., J. McCormack, A. Cutter, and T. Bukowski. 2000. Precise highly female-biased sex ratios in a social spider. Proc. R. Soc. Lond. B. 267: 1445-1449 Link » AvilÃ©s, L. 1999. Cooperation and non-linear dynamics: An ecological perspective on the evolution of sociality. Evol. Ecol. Research 1:459-477 Link » AvilÃ©s, L. and P. TufiÃ±o. 1998. Colony size and individual fitness in the social spider Anelosimus eximius. Am. Nat. 152: 403-418 Link » AvilÃ©s, L. 1997. Causes and consequences of cooperation and permanent-sociality in spiders. Evolution of Social Behaviour in Insects and Arachnids Cambridge University Press, Cambridge Link » AvilÃ©s, L. 1993. Interdemic selection and the sex ratio: a social spider perspective. Am. Nat. 142:320-345 Link »