Are avian blood parasites pathogenic in the wild? A medication experiment in blue tits (Parus caeruleus)
- S. Merino, J. Moreno, Juan José Sanz, E. Arriero
- BiologyProceedings of the Royal Society of London…
- 22 December 2000
Medicated females may be able to devote more resources to parental care through being released from the drain imposed upon them by parasites and/or through a reduced allocation to an immune response, adding support to previous findings relating host's life–history traits and haematozoan infections.
Haematozoa in forest birds from southern Chile: Latitudinal gradients in prevalence and parasite lineage richness
Geo- graphical gradients in prevalence of avian haematozoa differ between parasite genera and hemispheres, probably in relation to the existence of appropriate vector-parasite-host interactions.
New data on epizootiology and genetics of piroplasms based on sequences of small ribosomal subunit and cytochrome b genes.
Experimental evidence that egg color indicates female condition at laying in a songbird
The signaling hypothesis of eggshell coloration in birds is based on the assumption that females of species with blue-green eggs signal their phenotypic quality to their mates through deposition of…
Immune Defense and Host Sociality: A Comparative Study of Swallows and Martins
It is shown that the impact of parasites on host reproductive success was positively associated with the degree of sociality in the bird family Hirundinidae, however, the cost of parasitism in highly colonial species was countered by high levels of T‐ and B‐cell immune responses.
Climate change and fitness components of a migratory bird breeding in the Mediterranean region
It is shown that some fitness components of pied flycatchers are suffering from climate change in two of the southernmost European breeding populations, and the mismatch between the timing of peak food supply and nestling demand caused by recent climate change might result in a reduction of parental energy expenditure.
Environmental and genetic variation in the haematocrit of fledgling pied flycatchers Ficedula hypoleuca
The cross-fostering experiment indicated that almost all measured variation in haematocrit was explained by the nest where the bird was reared, not by their nest of origin, meaning that there was a very small, non-significant resemblance in the haem atocrit of genetically related sibs when reared in different environments.
Reproductive effort affects immune response and parasite infection in a lizard : a phenotypic manipulation using testosterone
The results suggest that higher investment in reproduction decreases the immune defences, and conduces to the use of structural resources, which may render individuals more susceptible to some haemoparasites.
NEST WEIGHT AND FEMALE HEALTH IN THE BLUE TIT (CYANISTES CAERULEUS)
The results do not support the thermoregulatory hypothesis and show that certain measures of female health are related to nest-building effort in some years, probably depending on environmental conditions.
Egg colouration and male parental effort in the pied flycatcher Ficedula hypoleuca
This evidence is only tentative until experimental confirmation, but suggests that males are affected by the colour of their mates’ eggs, a possibility not considered hitherto in the study of sexual selection.