Does total reproductive effort evolve independently of offspring size?

Caley, M. Julian, Schwarzkopf, Lin, and Shine, Richard (2001) Does total reproductive effort evolve independently of offspring size? Evolution: international journal of organic evolution, 55 (6). pp. 1245-1248.

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In all species, patterns of reproductive allocation have important fitness consequences and therefore important implications for life-history evolution. Nearly universally, theory in this field has modeled as independent the evolution of total allocation to offspring and the subsequent division of this allocation into many small versus few large offspring. Yet, some theory and a very small amount of experimental evidence suggest that these life-history traits may be evolutionarily linked. Using comparative analyses of copepod life histories, we illustrate that rather than being evolutionarily independent these traits can be linked, in this case, across a very large clade of invertebrates. Our results indicate that a more complete understanding of the evolution of these traits will require greater consideration of simultaneous allocation decisions, rather than sequential ones, and other genetic and selective mechanisms.

Item ID: 1616
Item Type: Article (Research - C1)
ISSN: 1558-5646
Keywords: comparative method, copepods, effort per progeny, egg size, life-history evolution, offspring size, reproductive effort
Date Deposited: 27 Aug 2007
FoR Codes: 06 BIOLOGICAL SCIENCES > 0699 Other Biological Sciences > 069999 Biological Sciences not elsewhere classified @ 51%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 49%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 51%
96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960802 Coastal and Estuarine Flora, Fauna and Biodiversity @ 49%
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