Deliberate rusty staining of plumage in the bearded vulture: does function precede art?
نویسندگان
چکیده
RAPHAE}L ARLETTAZ*†, PHILIPPE CHRISTE‡, PETER F. SURAI§ & ANDERS PAPE MØLLER** *Zoological Institute, Division of Conservation Biology, University of Bern †Swiss Ornithological Institute & Bearded Vulture Network Western Switzerland ‡Laboratory of Zoology and Animal Ecology, Institute of Ecology, University of Lausanne §Avian Science Research Centre, Scottish Agricultural College **Laboratoire de Parasitologie Evolutive, CNRS UMR 7103, Université Pierre et Marie Curie
منابع مشابه
Melanin-based color variation in the Bearded Vulture suggests a thermoregulatory function.
We document a case of intraspecific variation in plumage colouration in Bearded Vultures that may have arisen as a functional response to climate conditions. Two subspecies, Gypaetus barbatus barbatus (Eurasia and North Africa populations) and Gypaetus barbatus meridionalis (Eastern and Southern Africa), have been described on the basis of plumage colour differences. The plumage of G. b. barbat...
متن کاملModeling Ecosystems Using P Systems: The Bearded Vulture, a Case Study
The Bearded Vulture (Gypaetus barbatus) is an endangered species in Europe that feeds almost exclusively on bone remains of wild and domestic ungulates. In this paper, we present a model of an ecosystem related to the Bearded Vulture in the Pyrenees (NE Spain), by using P systems. The evolution of six species is studied: the Bearded Vulture and five subfamilies of domestic and wild ungulates up...
متن کاملIron oxides in the plumage of bearded vultures. Medicine or cosmetics?
We have hypothesized (Negro et al. 1999) that bearded vultures, Gypaetus barbatus, deliberately stain their plumage with iron oxides to signal dominance status. The conceptual frame to which we ascribe our hypothesis is the handicap principle (Zahavi & Zahavi 1997). For a signal to convey reliable information, and thus to evolve, it has to be costly (Zahavi 1975), and we proposed that the assoc...
متن کاملDietary habits in the endangered Bearded Vulture Gypaetus barbatus from Upper Pleistocene to modern times in Spain: a paleobiological conservation perspective
Although most Old World vulture species are declining or threatened in Asia and Africa, in Europe healthy vulture populations still exist. However, recent application of sanitary legislation that has greatly reduced the availability of animal carcasses is now a concern for conservationists. Until now, no studies have been undertaken to determine long-term dietary shifts in these species in Euro...
متن کاملHematology and blood chemistry reference values and age-related changes in wild Bearded Vultures (Gypaetus barbatus).
Normal hematologic and blood chemistry values for clinical use and age-related changes are reported as reference values for the endangered Bearded Vulture (Gypaetus barbatus). Blood samples were obtained from 21 nestlings and 26 free-living subadults and adults. No significant differences were found between subadults and adults or between sexes for any of the studied parameters. Reference range...
متن کامل