A5064034819- Animal Behavior and Reproduction
- Avian ecology and behavior
- Wildlife Ecology and Conservation
- Plant and animal studies
- Vector-borne infectious diseases
- Bird parasitology and diseases
- Reproductive Physiology in Livestock
- Genetic Mapping and Diversity in Plants and Animals
- Animal Ecology and Behavior Studies
- Effects of Environmental Stressors on Livestock
- Viral Infections and Vectors
- Vector-Borne Animal Diseases
- Bat Biology and Ecology Studies
- Evolution and Genetic Dynamics
- Genetic and phenotypic traits in livestock
- Ectopic Pregnancy Diagnosis and Management
- Ecology and Vegetation Dynamics Studies
Uppsala University
2003-2012
Major histocompatibility complex (MHC) genes encode proteins involved in the recognition of parasite-derived antigens. Their extreme polymorphism is presumed to be driven by co-evolution with parasites. Host-parasite was also hypothesized optimize within-individual MHC diversity at intermediate level. Here, we use unique data on lifetime reproductive success (LRS) female collared flycatchers test whether LRS associated class II diversity. We examined association between and infection avian...
Differential reproductive investment by the mother can critically influence offspring development and phenotype, strong selection is therefore expected to act on such maternal effects. Although a genetic basis prerequisite for phenotypic traits respond thus evolve, we still know very little about extent of heritable variation in effects natural populations. Here, present first estimates intrafemale repeatability across breeding seasons heritability hormone-mediated wild population collared...
Although immune function usually declines with age in humans and captive animals, little is known about whether deteriorates natural populations. Here we present evidence for such an age-related deterioration humoral from a wild population of the Collared Flycatcher (Ficedula albicollis). In this study, young (1-year old), mid-age (3-year old) old (5-6-year females were challenged nonpathogenic antigen, sheep red blood cells (SRBC), while provisioning their nestlings. The level antibodies...
This paper aims at partitioning genetic and environmental contribution to the phenotypic variance in nestling immune function measured with hypersensitivity test after inoculation phytohaemagglutinin. A cross-fostering experiment artificial enlargement of some broods was conducted. Variation response related their common origin, which suggests heritable component cell-mediated immunity. rearing environment also explained a significant part variation. However, deterioration conditions as...
The response to intradermally injected phytohaemagglutinin (PHA-response) is a commonly used quantification of avian immunocompetence (the ability resist pathogens). Parasite-mediated sexual selection requires heritable immunocompetence, but evidence for heritability PHA-response in birds largely stems from full-sib comparisons. Using an animal model approach, we quantified the narrow-sense 1626 collared flycatcher ( Ficedula albicollis ) nestlings 332 families, most which were...
An increasing number of studies have demonstrated that brood sex ratios are frequently unequal, but the proximate mechanisms underlying this deviation largely unknown. In current study we analysed from expected 1:1 ratio among dead embryos unhatched eggs collected partially clutches three passerine bird species. We showed male were significantly overrepresented great tit Parus major , blue P. caeruleus and collared flycatcher Ficedula albicollis . Moreover, bias in differed species tended to...
Abstract This study addressed whether there are any age‐related differences in reproductive costs. Of especial interest was young individuals increased their effort, and thereby cost, as much older birds when brood size enlarged. To address these questions, a brood‐size manipulation experiment with reciprocal cross‐fostering of nestlings middle‐aged female Collared flycatchers, Ficedula albicollis , performed on the Swedish island Gotland. Nestlings’ body mass, tarsus length survival were...