Auflistung nach Autor "Quillfeldt, Petra"
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Corticosterone at fledging depends on nestling condition, not on parental desertion
Quillfeldt, Petra; Poisbleau, Maud; Schwabl, Ingrid; Chastel, Olivier; Masello, Juan F. (2010)In some burrow-nesting birds, fledging is preceded by a strong rise in circulating corticosterone levels. Because the parents may desert nestlings in these species, this rise may be internally triggered or it may be a ... -
¿Cómo reproducirse exitosamente en un ambiente cambiante? Biología reproductiva del loro barranquero (Cyanoliseus patagonus) en el noreste de la Patagonia
Masello, Juan F.; Quillfeldt, Petra (2012)Durante más de 14 años se ha estudiado la biología reproductiva de una población de Loro Barranquero (Cyanoliseus patagonus) en el noreste de la Patagonia, Argentina. En este trabajo se revisan los resultados obtenidos en ... -
Diet and foraging areas of Southern Ocean seabirds and their prey inferred from stable isotopes: review and case study of Wilson’s storm-petrel
Quillfeldt, Petra; McGill, Rona A.R.; Furness, Robert W. (2005)Analysis of stable isotope ratios in animal tissues has emerged as a powerful tool for determining the trophic level and composition of prey and foraging location. We summarize here data on the stepwise trophic enrichment ... -
Diet composition of wild columbiform birds: next-generation sequencing of plant and metazoan DNA in faecal samples
Schumm, Yvonne R.; Masello, Juan F.; Vreugdenhil-Rowlands, Jennifer; Fischer, Dominik; Hillerich, Klaus; Quillfeldt, Petra (2023)Accurate knowledge of a species’ diets is fundamental to understand their ecological requirements. Next-generation sequencing technology has become a powerful and non-invasive tool for diet reconstruction through DNA ... -
Differences in stable isotopes in blood and feathers of seabirds are consistent across species, age and latitude: implications for food web studies
Quillfeldt, Petra; Bugoni, Leandro; McGill, Rona A.R.; Masello, Juan F.; Furness, Robert W. (2008)Stable isotopes of growing feathers and blood both represent assimilated diet, and both tissues are used to study the diet and foraging distribution of marine and terrestrial birds. Although most studies have assumed that ... -
Distribution patterns predict individual specialization in the diet of dolphin gulls
Masello, Juan F.; Wikelski, Martin; Voigt, Christian C.; Quillfeldt, Petra (2013)Many animals show some degree of individual specialization in foraging strategies and diet. This has profound ecological and evolutionary implications. For example, populations containing diverse individual foraging ... -
Diving seabirds share foraging space and time within and among species
Masello, Juan F.; Mundry, Roger; Poisbleau, Maud; Demongin, Laurent; Voigt, Christian C.; Wikelski, Martin; Quillfeldt, Petra (2010)Ecological theory predicts that animals with similar foraging strategies should not be able to coexist without segregating either in space, time or diet. In communities, intra-specific competition is thought to be more ... -
Does genetic structure reflect differences in non-breeding movements? A case study in small, highly mobile seabirds
Quillfeldt, Petra; Moodley, Yoshan; Weimerskirch, Henri; Cherel, Yves; Delord, Karine; Phillips, Richard A.; Navarro, Joan; Calderón, Luciano; Masello, Juan F. (2017)Background: In seabirds, the extent of population genetic and phylogeographic structure varies extensively among species. Genetic structure is lacking in some species, but present in others despite the absence of obvious ... -
Education benefits largest parrot colony
Masello, Juan F.; Quillfeldt, Petra (2005) -
Effect of supplementary food on age ratios of European turtle doves (Streptopelia turtur L.)
Rocha, Gregorio; Quillfeldt, Petra (2015)Many farmland birds have difficulties finding sufficient food in intensely managed agricultural ecosystems, and in more extensively worked landscapes they are often attracted to human–induced dietary sources. European ... -
Effects of severe rains on the mortality of Southern Rockhopper Penguin (Eudyptes chrysocome) chicks and its impact on breeding success
Demongin, Laurent; Poisbleau, Maud; Strange, Ian J.; Quillfeldt, Petra (2010) -
Evaluating the impact of handling and logger attachment on foraging parameters and physiology in southern rockhopper penguins
Ludynia, Katrin; Dehnhard, Nina; Poisbleau, Maud; Demongin, Laurent; Masello, Juan F.; Quillfeldt, Petra (2012)Logger technology has revolutionised our knowledge of the behaviour and physiology of free-living animals but handling and logger attachments may have negative effects on the behaviour of the animals and their welfare. We ... -
Experimental manipulation of cavity temperature produces differential effects on parasite abundances in blue tit nests at two different latitudes
Castaño-Vázquez, Francisco; Schumm, Yvonne R.; Bentele, Anna; Quillfeldt, Petra; Merino, Santiago (2021)Although different predictive models forecast that climate change will alter the distribution and incidence of parasitic diseases, few studies have investigated how microclimatic changes may affect host-parasite relationships. ... -
Feather stable isotopes (d2Hf and d13Cf) identify the Sub-Saharan wintering grounds of turtle doves from Europe
Marx, Melanie; Schumm, Yvonne R.; Kardynal, Kevin J.; Hobson, Keith A.; Rocha, Gregorio; Zehtindjiev, Pavel; Bakaloudis, Dimitris; Metzger, Benjamin; Cecere, Jacopo G.; Spina, Fernando; Cianchetti-Benedetti, Marco; Frahnert, Sylke; Voigt, Christian C.; Lormée, Hervé; Eraud, Cyril; Quillfeldt, Petra (2022) -
Female-specific colouration, carotenoids and reproductive investment in a dichromatic species, the upland goose Chloephaga picta leucoptera
Gladbach, Anja; Gladbach, David Joachim; Kempenaers, Bart; Quillfeldt, Petra (2010-11-01)Although studies on the evolution and function of female ornaments have become more numerous in the last years, the majority of these studies were carried out in cases where female ornaments were a smaller and duller version ... -
First record of Leach’s storm petrel Oceanodroma leucorhoa for King George Island, South Shetlands, Antarctica
Hahn, Steffen; Quillfeldt, Petra (1998) -
Flexible foraging behaviour of a sexually dimorphic seabird: large males do not always dive deep
Quillfeldt, Petra; Schroff, Simone; Noordwijk, Hendrika J. van; Michalik, Andreas; Ludynia, Katrin; Masello, Juan F. (2011)Sex differences in foraging behaviour have been explained by size dimorphism and/or avoidance of inter-sexual competition for depletable resources. To distinguish between these 2 hypotheses, we examined how intrinsic factors ... -
Full House: The Burrowing Parrots of Patagonia
Masello, Juan F.; Sommer, Christina; Quillfeldt, Petra (2006) -
Genomic evidence of demographic fluctuations and lack of genetic structure across flyways in a long distance migrant, the European turtle dove
Calderón, Luciano; Campagna, Leonardo; Wilke, Thomas; Lormee, Hervé; Eraud, Cyril; Dunn, Jenny C.; Rocha, Gregorio; Zehtindjiev, Pavel; Bakaloudis, Dimitrios E.; Metzger, Benjamin; Cecere, Jacopo G.; Marx, Melanie; Quillfeldt, Petra (2016)Background: Understanding how past climatic oscillations have affected organismic evolution will help predict the impact that current climate change has on living organisms. The European turtle dove, Streptopelia turtur, ... -
Geographical variation in egg size dimorphism in rockhopper penguins
Demongin, Laurent; Poisbleau, Maud; Rey, Andrea Raya; Schiavini, Adrian; Quillfeldt, Petra; Eens, Marcel; Strange, Ian J. (2010)All crested penguins present a unique reversed hatching asynchrony: the larger second-laid egg (B-egg) hatches before the smaller first-laid egg (A-egg). Although both eggs often hatch, the A-chick generally dies of ...