Impacts of female body size on cannibalism and juvenile abundance in a dominant arctic spider

Amanda Koltz & Justin Wright
1. Body size influences an individual’s physiology and the nature of its intra- and interspecific interactions. Changes in this key functional trait can therefore have important implications for populations as well. For example, among invertebrates, there is typically a positive correlation between female body size and reproductive output. Increasing body size can consequently trigger changes in population density, population structure (e.g., adult to juvenile ratio), and the strength of intraspecific competition. 2. Body size changes...
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