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Article
Vaidas Palinauskas, Auteur ; Justė Aželytė, Auteur ; Rasa Bernotienė, Auteur ; Rasa Binkienė, Auteur ; Dovilė Bukauskaitė, Auteur ; Carolina Romeiro Fernandes Chagas, Auteur ; Mélanie Duc, Auteur ; Tatjana Iezhova, Auteur ; Mikas Ilgūnas, Auteur ; Elena Platonova, Auteur ; Michael Tobler, Auteur ; Rita Žiegytė, Auteur ; Dennis Hasselquist, Auteur ; Gediminas Valkiūnas, AuteurAvian malaria, caused by Plasmodium parasites, commonly persists as a chronic infection, yet reliable treatment protocols remain insufficiently evaluated. Assessing treatment efficacy is essential for improving disease management and understandi[...]Nouveauté
Article
Sissel Sjoberg, Auteur ; Gintaras Malmiga, Auteur ; Andreas Nord, Auteur ; Arne Andersson, Auteur ; Johan Bäckman, Auteur ; Maja Tarka, Auteur ; Mikkel Willemoes, Auteur ; Kasper Thorup, Auteur ; Bengt Hansson, Auteur ; Thomas Alerstam, Auteur ; Dennis Hasselquist, AuteurMigrating from hemisphere to hemisphere is a global strategy for many bird species. Despite allowing birds to track productivity, these long-distance movements bring them in contact with inhospitable regions such as deserts and oceans. Sjöberg e[...]
Article
Sissel Sjoberg, Auteur ; Lykke Pedersen, Auteur ; Gintaras Malmiga, Auteur ; Thomas Alerstam, Auteur ; Bengt Hansson, Auteur ; Dennis Hasselquist, Auteur ; Kasper Thorup, Auteur ; Anders P. Tøttrup, Auteur ; Arne Andersson, Auteur ; Johan Bäckman, AuteurRecent advances in tracking technology are based on the use of miniature sensors for recording new aspects of individual migratory behaviour. In this study, we have used activity data loggers with barometric and temperature sensors to record the[...]
Article
Muhammad Asghar, Auteur ; Dennis Hasselquist, Auteur ; Staffan Bensch, AuteurOne group of commonly found parasites in birds, for which fitness consequences and effects on life history traits have been much debated are Haemosporidian blood parasites. In a long term study population of great reed warblers Acrocephalus arun[...]
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Dennis Hasselquist, AuteurIn this review, I focus on three key questions in avian comparative immunoecology: variation in immune responses in relation to sex; latitude (and pace-of-life); and the annual cycle. I present hypotheses and evaluate the so far rather scanty an[...]
Article
Jaroslav Kolecek, Auteur ; Petr Procházka, Auteur ; Naglaa El-Arabany, Auteur ; Maja Tarka, Auteur ; Mihaela Ilieva, Auteur ; Steffen Hahn, Auteur ; Marcel Honza, Auteur ; Javier de la Puente, Auteur ; Ana Bermejo, Auteur ; Arzu Gursoy, Auteur ; Staffan Bensch, Auteur ; Pavel Zehtindjiev, Auteur ; Dennis Hasselquist, Auteur ; Bengt Hansson, AuteurMigratory connectivity describes to which degree different breeding populations have distinct (non-overlapping) non-breeding sites. Uncovering the level of migratory connectivity is crucial for effective conservation actions and for understandin[...]
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Dennis Hasselquist, Auteur ; Staffan Bensch, AuteurAccording to honest signalling theory, signals must be costly to produce to retain information about the signaller's quality. The song produced by male birds during breeding is a vocal "ornament" used for intra- and inter-sexual purposes. The en[...]
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Eszter Szoellosi, Auteur ; Balazs Rosivall, Auteur ; Dennis Hasselquist, Auteur ; Janos Toeroek, AuteurPlumage ornamentation often signals the quality of males and, therefore, female birds may choose elaborately ornamented mates to increase their fitness. Such mate choice may confer both direct and indirect benefits to the offspring. Males with e[...]
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Mikael Akesson, Auteur ; Staffan Bensch, Auteur ; Dennis Hasselquist, AuteurWe present estimates of standardized selection (directional and quadratic) differentials via reproductive success on eight morphological traits in a newly founded long-term study population of great reed warblers Acrocephalus arundinaceus in Swe[...]
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Dennis Hasselquist, Auteur ; Teresa Montras-Janer, Auteur ; Maja Tarka, Auteur ; Bengt Hansson, AuteurThrough new tracking techniques, data on timing and routes of migration in long-distance migrant birds are accumulating. However, studies of the consistency of migration of the same individuals between years are still rare in small-sized passeri[...]
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Dennis Hasselquist, Auteur ; Orjan Ostman, Auteur ; Jonas Waldenström, Auteur ; Staffan Bensch, AuteurWe studied the prevalence and intensity of the haemosporidian blood parasite Haemoproteus payevskyi in great reed warblers at Lake Kvismaren (6 years) and Lake Segersjo (3 years) in Sweden. Based on microscopic inspection of slides from 282 adul[...]
Article
Hans Kallander, Auteur ; Dennis Hasselquist, Auteur ; Anders Hedenström, Auteur ; Andreas Nord, Auteur ; Henrik G. Smith, Auteur ; Jan-Ake Nilsson, AuteurThis study documents the advancement of laying dates in three species of tits (Paridae) in southernmost Sweden during recent decades, and the absence of a similar response in the pied flycatcher Ficedula hypoleuca. It is based on several differe[...]
