Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/1793
Título: Prey availability in time and space is a driving force in life history evolution of predatory insects
Autor: Borges, Isabel
Soares, António O.
Magro, Alexandra
Hemptinne, Jean-Louis
Palavras-chave: Aphid
Life History Traits
Slow-Fast Continuum
Data: 21-Abr-2011
Editora: Springer Netherlands
Citação: Borges I., Soares, A.O., Magro A. & Hemptinne, J-L (2011). Prey availability in time and space is a driving force in life history evolution of predatory insects. Evolutionary Ecology, 25: 1307-1319.
Resumo: Environmental constraints can be determinant key factors conditioning predator life history evolution. Prey seems to have conditioned life history evolution in their ladybird predator, with the predators of aphids apparently presenting faster development, greater fecundity and shorter longevity than species preying on coccids. However a rigorous comparison has never been done. We hypothesize that aphids and coccids differ by their developmental rate, abundance, and distribution in the field, which act as ecological constraints promoting life history evolution in ladybird predators. Field data reveal that aphids are ephemeral resources available in the form of large colonies randomly distributed in the habitat whereas coccids form smaller colonies that tend to be aggregated in space and available for longer periods. A comparison in laboratory conditions of two predatory species belonging to the tribe Scymnini (Coleoptera: Coccinellidae) show that the aphidophagous species lives at a faster pace than the coccidophagous: it develops faster, matures earlier, is more fecund, has a shorter reproductive life-span and allocate proportionally more fat in its gonads relative to soma. This indicates that the life histories of aphidophagous and coccidophagous ladybird predators appear to have evolved in response to particular patterns of prey availability in time and space. Under the light of these results, the existence of a slow-fast continuum in ladybirds is briefly addressed.
Descrição: Copyright © 2011 Springer Science+Business Media B.V..
Peer review: yes
URI: http://hdl.handle.net/10400.3/1793
ISSN: 0269-7653 (Print)
1573-8477 (Online)
Versão do Editor: http://dx.doi.org/10.1007/s10682-011-9481-y
Aparece nas colecções:DBIO - Artigos em Revistas Internacionais / Articles in International Journals

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