Browsing by Author "Quillfeldt, Petra"
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A wood-concrete nest box to study burrow-nesting petrels
Bedolla-Guzmán, Yuliana; Masello, Juan F.; Aguirre-Muñoz, Alfonso; Quillfeldt, Petra (2016) -
Acute stress hyporesponsive period in nestling Thin-billed prions Pachyptila belcheri
Quillfeldt, Petra; Poisbleau, Maud; Chastel, Olivier; Masello, Juan F. (2009)When confronted with acute stressors, vertebrates show a highly conserved evolved sequence of physiological, hormonal and behavioural responses, including the activation of the hypothalamic-pituitary-adrenal axis. Many ... -
Additive Traits Lead to Feeding Advantage and Reproductive Isolation, Promoting Homoploid Hybrid Speciation
Masello, Juan F; Quillfeldt, Petra; Sandoval-Castellanos, Edson; Alderman, Rachael; Calderón, Luciano; Cherel, Yves; Cole, Theresa L; Cuthbert, Richard J; Marin, Manuel; Massaro, Melanie; Navarro, Joan; Phillips, Richard A; Ryan, Peter G; Shepherd, Lara D; Suazo, Cristián G; Weimerskirch, Henri; Moodley, Yoshan (2019-04-26)Speciation through homoploid hybridization (HHS) is considered extremely rare in animals. This is mainly because the establishment of reproductive isolation as a product of hybridization is uncommon. Additionally, many ... -
Annual movements of a migratory seabird - the NW European red-throated diver (Gavia stellata) - reveals high individual repeatability but low migratory connectivity
Kleinschmidt, Birgit; Burger, Claudia; Bustamante, Paco; Dorsch, Monika; Heinänen, Stefan; Morkunas, Julius; Žydelis, Ramunas; Nehls, Georg; Quillfeldt, Petra (2022)In this study, the annual movements of a seabird species, the red-throated diver (Gavia stellata), were investigated in space and time. Between 2015 and 2017, 33 individuals were fitted with satellite transmitters at the ... -
Anthropogenic pressure in a marine world: Distribution, movement, diet and parasite infestation of red-throated divers Gavia stellata in the context of habitat change
Kleinschmidt, Birgit (2022)Information on the behaviour and ecology of seabirds provides an important basis for better understanding the effects of changes in their habitats and developing conservation strategies accordingly. The red-throated diver ... -
Are acoustical parameters of begging call elements of thin-billed prions related to chick condition?
Quillfeldt, Petra; Poisbleau, Maud; Mundry, Roger; Masello, Juan F. (2010)Chicks of burrowing petrels use begging calls to advertise their hunger levels when parents arrived at the nest. In a previous study, adult thin-billed prions Pachyptila belcheri responded to higher begging call rates of ... -
Aspects of the breeding biology of the southern rockhopper penguin Eudyptes c. chrysocome and new consideration on the intrinsic capacity of the A-egg
Poisbleau, Maud; Demongin, Laurent; Strange, Ian J.; Otley, Helen; Quillfeldt, Petra (2008)The rockhopper penguins Eudyptes chrysocome have recently been split into the northern E. moseleyi and the southern E. chrysocome rockhopper penguin. It is therefore crucial to have a comprehensive understanding of the ... -
Behavioural plasticity in the early breeding season of pelagic seabirds : a case study of thin-billed prions from two oceans
Quillfeldt, Petra; Weimerskirch, Henri; Masello, Juan F.; Delord, Karine; McGill, Rona A. R.; Furness, Robert W.; Cherel, Yves (2019)Background: In long-lived seabirds that migrate large distances independently of each other, the early part of the breeding season is crucially important for a successful reproductive attempt. During this phase, pair bonds ... -
Birds from the endangered Monte, the steppes and coastal biomes of the province of Río Negro, northern Patagonia, Argentina
Llanos, Fabián A.; Failla, Mauricio; García, Gustavo J.; Giovine, Pablo M.; Carbajal, Mirta; González, Patricia M.; Paz Barreto, Daniel; Quillfeldt, Petra; Masello, Juan F. (2011)The main ecosystem in northern Patagonia, Argentina, is the Monte, a semi-desert scrubland home to a high biodiversity. Monte is the most endangered ecosystem of southern South America, with an annual rate of clearance of ... -
Blood and Intestinal Parasites in Wild Psittaciformes: A Case Study of Burrowing Parrots (Cyanoliseus Patagonus)
Masello, Juan F.; Choconi, R. Gustavo; Sehgal, Ravinder N.M.; Tell, Lisa; Quillfeldt, Petra (2006)Quantifying parasites is essential for understanding the ecological and evolutionary implications of parasites on their hosts. It is also crucial for many conservation attempts carried out in endangered groups of birds, ... -
Blood parasites in noddies and boobies from Brazilian offshore islands : differences between species and influence of nesting habitat
Quillfeldt, Petra; Martinez, Javier; Bugoni, Leandro; Mancini, Patricia L.; Merino, Santiago (2014)Seabirds are often free from blood parasites, and a recent review suggested that phylogenetic, ecological and life-history parameters can determine the prevalence of blood parasites in seabirds. However, there is a lack ... -
Blood parasites in Passeriformes in central Germany: prevalence and lineage diversity of Haemosporida (Haemoproteus, Plasmodium and Leucocytozoon) in six common songbirds
Schumm, Yvonne R.; Wecker, Christine; Marek, Carina; Wassmuth, Mareike; Bentele, Anna; Willems, Hermann; Reiner, Gerald; Quillfeldt, Petra (2019)Background. Avian Haemosporida are vector-borne parasites that commonly infect Passeriformes. Molecular analyses revealed a high number of different lineages and lineage specific traits like prevalence and host-specificity, ... -
Breeding biology, chick growth, and diet of the Least Storm-Petrel Oceanodroma microsoma on Islas San Benito, Mexico
Bedolla-Guzmán, Yuliana; Masello, Juan F.; Aguirre-Muñoz, Alfonso; Lavaniegos, Bertha E.; Quillfeldt, Petra (2017)The Least Storm-Petrel Oceanodroma microsoma is endemic to islands on both coasts of Baja California, in Mexico. It is the smallest seabird species and one of the least studied of the order Procellariiformes. We present a ... -
Burrowing Parrots an agricultural pest?
Pérez, M. Rita; Failla, Mauricio; Seijas, Verónica; Quillfeldt, Petra; Masello, Juan F. (2005) -
Can faecal glucocorticoid metabolites be used to monitor body condition in wild Upland geese Chloephaga picta leucoptera?
Gladbach, Anja; Gladbach, David Joachim; Koch, Martina; Kuchar, Alexandra; Möstl, Erich; Quillfeldt, Petra (2011-07-01)The measurement of faecal glucocorticoid metabolites is used as a non-invasive technique to study stress in animal populations. They have been used most widely in mammals, and mammalian studies have also treated issues ... -
Can the intake of antiparasitic secondary metabolites explain the low prevalence of hemoparasites among wild Psittaciformes?
Masello, Juan F.; Martinez, Juan; Calderón, Luciano; Wink, Michael; Quillfeldt, Petra; Sanz, Virginia; Theuerkauf, Jörn; Ortiz-Catedral, Luis; Berkunsky, Igor; Brunton, Dianne; Díaz-Luque, José A.; Hauber, Mark E.; Ojeda, Valeria; Barnaud, Antoine; Casalins, Laura; Jackson, Bethany; Mijares, Alfredo; Rosales, Romel; Seixas, Gláucia; Serafini, Patricia; Silva-Iturriza, Adriana; Sipinski, Elenise; Vásquez, Rodrigo A.; Widmann, Peter; Widmann, Indira; Merino, Santiago (2018)BACKGROUND: Parasites can exert selection pressure on their hosts through effects on survival, on reproductive success, on sexually selected ornament, with important ecological and evolutionary consequences, such as changes ... -
Chick provisioning and nest attendance of male and female Wilson’s storm petrels Oceanites oceanicus
Gladbach, Anja; Braun, Christina; Nordt, Anja; Peter, Hans-Ulrich; Quillfeldt, Petra (2009)Seabirds show a range of patterns of sexual size dimorphism and sex-specific parental investment, but the underlying causes remain poorly understood. The aim of the present study was to test two longstanding hypotheses of ... -
Combination of At-Sea Activity, Geolocation and Feather Stable Isotopes Documents Where and When Seabirds Molt
Cherel, Yves; Quillfeldt, Petra; Delord, Karine; Weimerskirch, Henri (2016)Key facets of the foraging ecology of seabirds during the inter-breeding period still remain poorly understood because of the difficulty of studying them at sea, including during the energy-demanding molting stage. Here, ... -
Comparative ecology of wild Columbiformes native to Europe - An analysis of movement behaviour, diet composition and haemosporidian infections
Schumm, Yvonne R. (2022)Behaviour encompasses all interactions of an animal with other organisms and with its environment. Studying animal behaviour can provide important information for species conservation and management. In this thesis, I aimed ... -
Compound-specific stable isotope analyses in Falkland Islands seabirds reveal seasonal changes in trophic positions
Quillfeldt, Petra; Masello, Juan F. (2020)