Détail de l'auteur
Auteur Bart Kempenaers |
Documents disponibles écrits par cet auteur (30)
Article
Martin Bulla, Auteur ; Christina Muck, Auteur ; Daniela Tritscher, Auteur ; Bart Kempenaers, AuteurIn species with biparental care, coordination of parental behaviour between pair members increases reproductive success. Coordination is difficult if opportunities to communicate are scarce, which might have led to the evolution of elaborate nes[...]Article
Raf Vervoort, Auteur ; Lucie E. Schmaltz, Auteur ; Jos C.E.W. Hooijmeijer, Auteur ; Yvonne I. Verkuil, Auteur ; Bart Kempenaers, Auteur ; Theunis Piersma, AuteurArticle
Article
Raf Vervoort, Auteur ; Bart Kempenaers, AuteurIn lekking male Ruffs, three genetically distinct morphs compete for copulations with the visiting females. Faeder males are female mimics, whereas Independents and Satellites show marked sexual dimorphism, including an elaborate ornamental plum[...]Article
Article
Giulia Bambini, Auteur ; Emmi Schlicht, Auteur ; Bart Kempenaers, AuteurMost bird species exhibit biparental care, but the type of care provided by each sex may differ substantially. In particular, during the incubation phase in passerines, females perform most or all of the incubation, while the male cares for the [...]Article
Emmi Schlicht, Auteur ; Bart Kempenaers, AuteurBlood sampling from the brachial vein and sub-cutaneous implantation of PIT-tags ('passive integrated transponders') are techniques widely practiced in ornithological research. Longer-term consequences of these procedures (across months or years[...]Article
Arnaud Da Silva, Auteur ; Bart Kempenaers, AuteurAnimals breeding at northern latitudes experience drastic changes in daily light conditions during the breeding season with decreasing periods of darkness, whereas those living at lower latitudes are exposed to naturally dark nights throughout t[...]Article
Article
Lotte Schlicht, Auteur ; Bart Kempenaers, AuteurMany bird species use specific vocalizations in the context of courtship or (attempted) copulations. These vocalizations can be used to gain information about the courtship behaviour of individuals, even when courtship or copulation behaviour it[...]Article
H. Herman van Oosten, Auteur ; Jakob C. Mueller, Auteur ; Jente Ottenburghs, Auteur ; Christiaan Both, Auteur ; Bart Kempenaers, AuteurContinuous animal populations often become fragmented due to anthropogenic habitat alterations. These small, fragmented populations are fragile due to demographic and genetic factors, whereas immigration can enhance their long-term viability. Pr[...]Article
Article
Martin Bulla, Auteur ; Elias Stich, Auteur ; Mihai Valcu, Auteur ; Bart Kempenaers, AuteurBiparental incubation is a form of cooperation between parents, but it is not conflict-free because parents trade off incubation against other activities (e.g. self-maintenance, mating opportunities). How parents resolve such conflict and achiev[...]Article
Martin Bulla, Auteur ; Elias Stich, Auteur ; Mihai Valcu, Auteur ; Bart Kempenaers, AuteurBiparental incubation is a form of cooperation between parents, but it is not conflict-free because parents trade off incubation against other activities (e.g. self-maintenance, mating opportunities). How parents resolve such conflict and achiev[...]Article
Kaspar Delhey, Auteur ; Bart Kempenaers, AuteurIn many species of passerine birds yearlings display a less elaborate version of the adult secondary sexual traits, but the causes of such differences in ornamentation are not always well understood. We studied age-related changes in blue tit Pa[...]Article
Fabrice Helfenstein, Auteur ; Tibor Szép, Auteur ; Zsolt Nagy, Auteur ; Bart Kempenaers, Auteur ; Richard H. Wagner, AuteurSperm mobility is known to be an important determinant of a male's sperm competitive ability. Although more debated, sperm length and its relation to sperm swimming ability has also been proposed to determine a male's fertilisation potential. Fu[...]Article
Arnaud Da Silva, Auteur ; David Diez-Mendez, Auteur ; Bart Kempenaers, AuteurThe ecological effects of light pollution are becoming better understood, especially in birds. Recent studies have shown that several bird species can use street lighting to extend activity into the night during the breeding season. However, mos[...]Article
Elizabeth Yohannes, Auteur ; Raymond W. Lee, Auteur ; Mihai Valcu, Auteur ; Bart Kempenaers, AuteurWe measured deuterium isotope ratios (delta D(f)) in primary feathers to distinguish first-year from older Pectoral Sandpipers Calidris melanotos captured in Barrow, Alaska, during the breeding season. delta D(f) showed a distinct bimodal distri[...]Article
Corinna Steinmeyer, Auteur ; Jakob C. Mueller, Auteur ; Bart Kempenaers, AuteurSleep is ubiquitous in animals, but there is great inter- and intraspecific variation in the daily amount of sleep that is needed. Chronic sleep curtailment or experimental sleep deprivation are known to impair health and performance of individu[...]Article
Silke Laucht, Auteur ; Emily H. DuVal, Auteur ; Bart Kempenaers, AuteurTheory predicts that overall population sex ratios should be around parity. But when individual females can receive higher fitness from offspring of one sex, they may benefit by biasing their brood sex ratios accordingly. In lekking species, hig[...]Article
Elizabeth Yohannes, Auteur ; Asta Krizanauskiene, Auteur ; Mihai Valcu, Auteur ; Staffan Bensch, Auteur ; Bart Kempenaers, AuteurParasites can have strong effects on host life-history and behaviour, and result in changes in host population dynamics and community structure. We applied a PCR-based technique and examined prevalence of malaria and related haemosporidian paras[...]Article
Elizabeth Yohannes, Auteur ; Mihai Valcu, Auteur ; Raymond W. Lee, Auteur ; Bart Kempenaers, AuteurResources for egg production may come from body reserves stored before breeding ("capital breeders") or from food acquired at the breeding site ("income breeders"). Arctic migrants were long thought to be capital breeders, because they often arr[...]Article
Angelika G. Denk, Auteur ; Bart Kempenaers, AuteurThe steroid hormone testosterone (T) mediates the expression of many secondary sexual characters, including behaviors which influence male reproductive success. Testes are one of the major sources of androgens, in particular of T. Although a pos[...]Article
Lotte Schlicht, Auteur ; Mihai Valcu, Auteur ; Bart Kempenaers, AuteurThiessen polygons are often used to model territory characteristics. However, information about the quality of Thiessen polygon-based estimates is currently lacking. We used published data to investigate the match between Thiessen polygons and m[...]Article
Antje Girndt, Auteur ; Ulrich Knief, Auteur ; Wolfgang Forstmeier, Auteur ; Bart Kempenaers, AuteurHere we report the first discovery of two viable triploid male Zebra Finches Taeniopygia guttata. We compared the morphology of their sperm with that of normal diploid Zebra Finches and examined eggs resulting from a triploid male and diploid fe[...]Article
Lillie A. Langlois, Auteur ; Katrina Murboeck, Auteur ; Martin Bulla, Auteur ; Bart Kempenaers, AuteurLanglois L.A., Murbock K., Bulla M. & Kempenaers B. 2012. Unusual incubation: Long-billed Dowitcher incubates mammalian bones. Ardea 100: 206-210. It is well established that once birds have laid their eggs they sometimes incubate non-egg object[...]Article
Alain Jacot, Auteur ; Mihai Valcu, Auteur ; Bart Kempenaers, AuteurDivorce between breeding seasons, i.e. mate change while the old breeding partner is still alive, has been well-studied in several bird species. It can be viewed either as the result of reproductive decisions of individuals to maximize their own[...]