ANNUAL ROUTINES · Optimal annual routines of non-migratory birds: the effects of state
6РП — Действия „Мария Кюри“
- Период
- 2005-02-15 → 2006-02-14
- Финансиране от ЕС
- 40 000 €
- Участници
- 1
- Схема
- ERG
Линиите свързват координатора с партньорите. За проекти отпреди 2014 г. CORDIS не винаги дава точни координати. Тези точки са на ниво град или държава.
Накратко на български
Вътрешното състояние на птиците, като здравето и енергийните резерви, определя поведението им и качеството на перата. Разбирането на тези процеси помага да се предвиди как храната и имунната система влияят върху оцеляването и динамиката на популациите.
Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.
Резултати накратко
Final Activity Report Summary - ANNUAL ROUTINES (Optimal annual routines of non-migratory birds: the effects of state)
The bird organisms internal state, e.g. health, immune function, energetic reserves and feather quality, can significantly influence their behavioural decisions and life history strategies. In order to achieve a better understanding of the evolution and ecology of life history and behaviour it is important to put great emphasis on the study of internal state and its interaction with behaviour and life history. In this study we empirically investigated the factors affecting feather quality and health status in birds and theoretically examined the effects of energetic reserves on immune defence and the effects of food availability on population processes in migratory birds. We showed that during ontogenic development the young birds adaptively allocated feather deformities to feathers that would be soon replaced in the subsequent moult. We also pointed out that moult might be more demanding for birds in terms of health status than it was previously thought. By developing simple models of immune response we found that animals with higher reserves should invest more in their immune system and that, owing a two line defence, i.e. constitutive immunity and immune response, was much more efficient, both in terms of energy and survival expectation. We found a surprisingly large effect of food deprivation during the migratory journey on the population dynamics of migratory birds. Furthermore, our state-dependent optimal annual routine model showed that internal state variables, like energetic reserves, might be efficiently used to predict population processes.
Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз
Цел на проекта
In a periodically changing environment it is important for animals to time the major events of their life (breeding and moult) in order to maximise their lifetime fitness i.e. they should optimise their annual routines. Our understanding of what ecological , evolutionary or life history factors are responsible for the evolution and maintenance of the considerable variability in annual schedules between populations and species is still unsatisfactory.The understanding of these factors is, however, important. First, it may provide the missing link between individual behaviour and population-level processes resulting in models that are more useful for nature conservation. Second, by clarifying the interactions between state variables (e.g. feather quality, health status) and annual routines it may serve as the basis to implement new methods in which measuring state variables can be a convenient way to estimate parameters of population processes. The proposed research focuses on how state variables influence future behaviour of birds and, vice versa, how variation in annual routines changes state variables. To do so, we first develop a new class of models based on the recent theoretical approach to optimal annual routines and we then test the predictions of these models using field observations and experiments to investigate the interactions between feather quality, health status, timing of breeding and moult.As the result we will understand how various factors influence the timing of breeding and moult and how individual behaviour might affect population processes. The project contributes to the objectives of the Specific Programme as follows. I can continue my work in my homeland allowing the transfer of the knowledge I gained during my Marie Curie Fellowship. It promotes the mobility of researchers from several parts of the EU and helps to form cooperation between the regional (Hungarian, Romanian and Slovakian) Universities.
Оригинален текст от CORDIS (на английски).
Участници
- UNIVERSITY OF DEBRECEN, SCHOOL OF INDEPENDENT FACULTIES · DEBRECENКоординаторНиво градУнгария
Връзки
Данни: CORDIS, © Европейски съюз