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Auteur R. Griffiths |
Documents disponibles écrits par cet auteur (7)
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Article
R. Griffiths ; B. Tiwari 1993Proc Nat Acad Sci USA 90 p8324-8326![]()
Article
R. Griffiths 1991Proc R Soc B 244 p123-128![]()
Article
B. Keitt, Auteur ; R. Griffiths, Auteur ; S. Boudjelas, Auteur ; K. Broome, Auteur ; S. Cranwell, Auteur ; J. Millett, Auteur ; W. Pitt, Auteur ; A. Samaniego-Herrera, AuteurInvasive vertebrates are a leading cause of extinction on islands and rats (Rattus spp.) are one of the most damaging to island ecosystems. Methods to eradicate rats from islands are well established and there have been over 580 successful eradi[...]![]()
Article
E. Kalmbach, Auteur ; R. Griffiths, Auteur ; J. E. Crane, Auteur ; R. W. Furness, AuteurWe investigated the effects of increased egg production on body condition as well as on measures of reproductive performance in great skuas, Stercorarius skua, over two subsequent years. We experimentally increased egg production from the normal[...]![]()
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M. F. Clarke, Auteur ; D. A. Jones, Auteur ; J. G. Ewen, Auteur ; R. J. Robertson, Auteur ; R. Griffiths, Auteur ; J. Painter, Auteur ; P. T. Boag, Auteur ; R. Crozier, AuteurWe examined the sex ratios of adults and nestlings in the cooperatively breeding bell miner Manorina melanophrys. Males were over-represented among helpers (mean of 6.8 male helpers per nest compared to 0.3 female helpers). 58% of nestlings samp[...]![]()
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R. B. Bradbury, Auteur ; R. Griffiths, AuteurMany birds hatch their eggs asychronously while other species are more synchronous. Different hatching patterns may produce different sex-ratios through sex-biased chick mortality, but the relationship between sex-ratios and hatching pattern has[...]![]()
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K. E. Arnold, Auteur ; R. Griffiths, AuteurIn the jackdaw Corvus monedula, eggs hatch asynchronously with the youngest Chicks in the brood often starving to death. So far, it is unknown whether there are sex differences in Vulnerability to starvation. Adult females are smaller than males[...]



