| Titre : | Journal of Avian Biology 40(3) - MAY 2009 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Isabel Lopez-Rull, Auteur ;
Diego Gil, Auteur
In birds, female egg allocation patterns have a strong influence in offspring development and differential investment in egg size and composition has been shown to respond to male attractiveness. In this study we experimentally manipulated the p[...]
Article
L. Scott Johnson, Auteur ;
Jessica L. Brubaker, Auteur ;
Bonnie G. P. Johnson, Auteur ;
Brian S. Masters, Auteur
Female birds are hypothesized to mate outside the pairbond to secure alleles that enhance the fitness potential of their offspring. To test this, researchers typically compare fitness-related attributes of extra-pair (EP) and within-pair (WP) ha[...]
Article
Oddmund Kleven, Auteur ;
Terje Laskemoen, Auteur ;
Jan T. Lifjeld, Auteur
How long is a sand martin Riparia riparia spermatozoon? In a recent study, Helfenstein et al. (2008) presented data on the intraspecific variation in sperm length, swimming speed and longevity in this species and some interesting correlations be[...]
Article
Simon C. Griffith, Auteur ;
Iain Barr, Auteur ;
Ben C. Sheldon, Auteur ;
Louise V. Rowe, Auteur ;
Terry Burke, Auteur
A recent study reported the incidence of intraspecific brood parasitism (IBP) in the blue tit, based on differences in pigmentation between eggs within clutches and the appearance of multiple eggs within a nest in a single day. Here we present d[...]
Article
Johan Elmberg, Auteur ;
Karin Folkesson, Auteur ;
Matthieu Guillemain, Auteur ;
Gunnar Gunnarsson, Auteur
Breeding success in ground-nesting birds is primarily determined by nest survival, which may be density-dependent, but the generality of this pattern remains untested. In a replicated crossover experiment conducted on 30 wetlands, survival of si[...]
Article
Ian C. T. Nisbet, Auteur ;
Peter Dann, Auteur
We measured breeding performance of little penguins Eudyptula minor at Phillip Island, Victoria, Australia, during a 21-year period. All birds considered in this paper (n=307) were of known age (2-22 y) and sex, and most were of known, or closel[...]
Article
Valentina Ferretti, Auteur ;
David W. Winkler, Auteur
The costs imposed by parental care duties on an individual's future survival and reproduction generate conflicts because parents should attempt to minimize their investment in the present brood, and exploit the parental care of the other parent.[...]
Article
Lisa T. Ballance, Auteur ;
David G. Ainley, Auteur ;
Grant Ballard, Auteur ;
Kerry Barton, Auteur
Central-place foraging seabirds alter the availability of their prey around colonies, forming a "halo" of reduced prey access that ultimately constrains population size. This has been indicated indirectly by an inverse correlation between colony[...]
Article
Shoshanah R. Jacobs, Auteur ;
Kyle H. Elliott, Auteur ;
Anthony J. Gaston, Auteur ;
Jean-Michel Weber, Auteur
The laying of smaller replacement eggs has been described as a time-saving adaptation because chicks generally grow faster once hatched than inside the egg. However, chicks hatched from smaller eggs have, potentially, lower survival. Consequentl[...]
Article
Marty L. Leonard, Auteur ;
Andrew G. Horn, Auteur ;
Alexandra Dorland, Auteur
Some studies suggest that offspring might coordinate their begging displays to send a more effective brood signal, which in turn, could increase parental feeding rates. In tree swallows Tachycineta bicolor, when nestlings call together, their ca[...]
Article
Kathryn M. Langin, Auteur ;
Peter P. Marra, Auteur ;
Zoltán Németh, Auteur ;
Frank R. Moore, Auteur ;
T. Kurt Kyser, Auteur ;
Laurene M. Ratcliffe, Auteur
Each spring, millions of songbirds migrate across the Gulf of Mexico on their way to breeding sites in North America. Data from radar and migration monitoring stations have revealed broad patterns in the spatial and temporal course of trans-Gulf[...]
Article
Manuel Soler, Auteur
Traditionally it was thought that the arms race between brood parasites and their hosts was confined to the egg stage of the breeding cycle because many host species are able to reject mimetic parasitic eggs but they are unable to reject strongl[...]
Article
Julien Gasparini, Auteur ;
ROMAIN PIAULT, Auteur ;
Pierre Bize, Auteur ;
Alexandre Roulin, Auteur
Although evidence is accumulating that mothers can transfer antibodies to their offspring, little is known about the consequences of such a transfer to the offspring immune system. Because maternal antibodies are effective only during a short pe[...]
Article
Francois Criscuolo, Auteur ;
Pierre Bize, Auteur ;
Lubna Nasir, Auteur ;
Neil B. Metcalfe, Auteur ;
Chris G. Foote, Auteur ;
Kate Griffiths, Auteur ;
Elizabeth A. Gault, Auteur ;
Pat Monaghan, Auteur
We present the application of a real-time quantitative PCR assay, previously developed to measure relative telomere length in humans and mice, to two bird species, the zebra finch Taeniopygia guttata and the Alpine swift Apus melba. This techniq[...]
Article
Max Post van der Burg, Auteur ;
Larkin A. Powell, Auteur ;
Andrew J. Tyre, Auteur
Ornithologists interested in the drivers of nest success and brood parasitism benefit from the development of new analytical approaches. One example is the development of so-called "log exposure" models for analyzing nest success. However, analy[...]
