| Titre : | Journal of Animal Ecology 79(1) - JAN 2010 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Thomas J. Benson, Auteur ;
Jeremy D. Brown, Auteur ;
James C. Bednarz, Auteur
P>1. Nest predation negatively affects most avian populations. Studies of nest predation usually group all nest failures when attempting to determine temporal and parental activities, habitat or landscape predictors of success. Often these studi[...]
Article
Rauno Veeroja, Auteur ;
Anne Kirk, Auteur ;
Vallo Tilgar, Auteur ;
Sander Saede, Auteur ;
Merit Kreitsberg, Auteur ;
Jueri Tonisson, Auteur
P>1. The Trivers-Willard model of optimal sex ratios predicts that in polygynous species mothers in better condition should produce more male than female offspring. However, empirical support for this hypothesis in mammals and especially ungulat[...]
Article
F. Menzel, Auteur ;
N. Bluethgen, Auteur
P>1. The huge diversity of symbiotic associations among animals and/or plants comprises both mutualisms and parasitisms. Most symbioses between social insect species, however, involve social parasites, while mutual benefits have been only suspec[...]
Article
Nigel E. Hussey, Auteur ;
Sabine P. Wintner, Auteur ;
Sheldon F. J. Dudley, Auteur ;
Geremy Cliff, Auteur ;
David T. Cocks, Auteur ;
M. Aaron MacNeil, Auteur
P>1. Life-history theory predicts that organisms will provide an optimal level of parental investment for offspring survival balanced against the effects on their own survival and future reproductive potential. 2. Optimal resource allocation mod[...]
Article
Rune Knudsen, Auteur ;
Raul Primicerio, Auteur ;
Per-Arne Amundsen, Auteur ;
Anders Klemetsen, Auteur
P>1. Inter-individual differences in trophic behaviour are considered important in the disruptive selection process for resource specialization and may represent an early phase in the evolution of polymorphism and adaptive radiation. Here, we pr[...]
Article
Karen L. Wiebe, Auteur
P>1. Most game theoretical models of biparental care predict that a reduction in care by one partner should not be fully compensated by increased work of its mate but this may not be true for incubating birds because a reduction in care could ca[...]
Article
Stuart P. Sharp, Auteur ;
Tim H. Clutton-Brock, Auteur
P>1. Senescence (or 'ageing') is a widespread and important process in wild animal populations, but variation in ageing patterns within and between species is poorly understood. 2. In cooperatively breeding species, the costs of reproduction are[...]
Article
Eric V. Regehr, Auteur ;
Christine M. Hunter, Auteur ;
Hal Caswell, Auteur ;
Steven C. Amstrup, Auteur ;
Ian Stirling, Auteur
P>1. Observed and predicted declines in Arctic sea ice have raised concerns about marine mammals. In May 2008, the US Fish and Wildlife Service listed polar bears (Ursus maritimus) - one of the most ice-dependent marine mammals - as threatened u[...]
Article
Gwenael Quaintenne, Auteur ;
Jan A. van Gils, Auteur ;
Pierrick Bocher, Auteur ;
Anne Dekinga, Auteur ;
Theunis Piersma, Auteur
P>1. Studies of diet choice usually assume maximization of energy intake. The well-known 'contingency model' (CM) additionally assumes that foraging animals only spend time searching or handling prey. Despite considerable empirical support, ther[...]
Article
Niclas Jonzén, Auteur ;
Tony Pople, Auteur ;
Jonas Knape, Auteur ;
Martin Skold, Auteur
P>1. Many organisms inhabit strongly fluctuating environments but their demography and population dynamics are often analysed using deterministic models and elasticity analysis, where elasticity is defined as the proportional change in populatio[...]
Article
Sheena C. Cotter, Auteur ;
Rebecca M. Kilner, Auteur
P>1. A key component of parental care involves defending resources destined for offspring from a diverse array of potential interspecific competitors, such as social parasites, fungi and bacteria. 2. Just as with other aspects of parental care, [...]
