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34 results for “Ficedula flycatcher”
Figure 2. Photographs a in First records of Narcissus Flycatcher (Ficedula narcissina) and Chestnut-winged Cuckoo (Clamator coromandus) for the Mariana Islands
Figure 2. Photographs a) and b) of adult male Narcissus Flycatcher (Ficedula narcissina), c) adult Chestnut-winged cuckoo (Clamator coromandus) on Guam, Mariana Islands. Photographs a) and c) by RCL, b) by JWS.
Figure 1 in First records of Narcissus Flycatcher (Ficedula narcissina) and Chestnut-winged Cuckoo (Clamator coromandus) for the Mariana Islands
Figure 1. Map showing the locations of the new records of Narcissus Flycatcher and Chestnutwinged Cuckoo on Guam, Mariana Islands. Inset, top left: location of the Mariana Islands within the Western Pacific. Left: Location of Guam within the southern Mariana Islands and box showing the general location of the sightings. Right: Satellite image (2018) of northern Guam (Map data: Google, CNES/Airbus, NOAA) showing the specific locations of the sightings (marked by asterisks).
Linked collectors and determiners for: Taxonomy of the European Pied Flycatcher Ficedula hypoleuca (Aves: Muscicapidae).
Natural history specimen data linked to collectors and determiners held within, "Taxonomy of the European Pied Flycatcher Ficedula hypoleuca (Aves: Muscicapidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/b7070d9b-285e-47c3-b614-8333be2e2121">https://bionomia.net/dataset/b7070d9b-285e-47c3-b614-8333be2e2121</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/b7070d9b-285e-47c3-b614-8333be2e2121">https://gbif.org/dataset/b7070d9b-285e-47c3-b614-8333be2e2121</a>. Formatted as a Frictionless Data package.
The role of recombination dynamics in shaping signatures of direct and indirect selection across the Ficedula flycatcher genome
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Evidence that genetic drift not adaptation drives fast-Z and large-Z effects in Ficedula flycatchers
<p>The sex chromosomes have been hypothesized to play a key role in driving adaptation and speciation across many taxa. The reason for this is thought to be the hemizygosity of the heteromorphic part of sex chromosomes in the heterogametic sex, which exposes recessive mutations to natural and sexual selection. The exposure of recessive beneficial mutations increases their rate of fixation on the sex chromosomes, which results in a faster rate of evolution. In addition, genetic incompatibilities between sex-linked loci are exposed faster in the genomic background of hybrids of divergent lineages, which makes sex chromosomes contribute disproportionately to reproductive isolation. However, in birds, which show a Z/W sex determination system, the role of adaptation vs. genetic drift as the driving force of the faster differentiation of the Z chromosome (<em>fast-Z</em> effect) and the disproportionate role of the Z chromosome in reproductive isolation (<em>large-Z</em> effect) are still debated. Here, we address this debate in the bird genus <em>Ficedula</em> flycatchers based on population-level whole-genome sequencing data of six species. Our analysis provides evidence for both faster lineage sorting and reduced gene flow on the Z chromosome than the autosomes. However, these patterns appear to be driven primarily by the increased role of genetic drift on the Z chromosome, rather than an increased rate of adaptive evolution. Genomic scans of selective sweeps and fixed differences in fact suggest a reduced action of positive selection on the Z-chromosome. Nevertheless, it is possible that the faster lineage sorting of the Z chromosome due to genetic drift may help drive the evolution of genetic incompatibilities between species.</p>
Heavy metal pollution exposure affects egg coloration but not male provisioning effort in the pied flycatcher Ficedula hypoleuca
<p>Heavy metal pollution is known to negatively affect numerous traits in birds, including foraging, metabolism, immunity, and reproductive success. In this study, our primary aim was to assess the impact of metal pollution exposure on the visual appearance of the pied flycatcher (<em>Ficedula hypoleuca</em>) eggs. Specifically, we focused on blue-green biliverdin-based coloration, a trait expected to function as a signal of female quality to males. In line with the sexually selected egg coloration (SSEC) hypothesis, which posits that males respond to more intensely colored eggs by increasing their provisioning effort, our second objective was to investigate whether metal pollution exposure affects this specific signaling mechanism and subsequent male behavior. Our results showed that although coloration did not correlate with female quality or male provisioning effort, egg blue-green coloration decreased in polluted areas compared to non-polluted control areas. Our analysis of reflectance data revealed that this difference was due to an increased ultraviolet reflectance of eggs from polluted areas, likely caused by changes in eggshell microstructure (e.g. porosity). We therefore propose that metal pollution exposure may compromise crucial color signals of bird eggs. Avian visual modeling indicated that eggs laid by different flycatcher females are generally very similar, making discrimination by males challenging and perhaps impossible especially in dark cavities. Overall, our results suggest that the SSEC hypothesis may lack adaptive relevance for the pied flycatcher in Northern Europe, even in environments influenced by anthropogenic activities.</p>
Heavy metal pollution exposure affects egg coloration but not male provisioning effort in the pied flycatcher Ficedula hypoleuca
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Evidence that genetic drift not adaptation drives fast-Z and large-Z effects in Ficedula flycatchers
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Data from: Ecological drivers and fitness consequences of incubation period in Ficedula albicollis (Collared Flycatcher): Insights from a long-term data set
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Positive selection plays a major role in shaping signatures of differentiation across the genomic landscape of two independent Ficedula flycatcher species pairs
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Data from: Moderate heritability and low evolvability of sperm morphology in a species with high risk of sperm competition, the collared flycatcher Ficedula albicollis
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Data from: Sex-biased gene expression, sexual antagonism and levels of genetic diversity in the collared flycatcher (Ficedula albicollis) genome
Theoretical work suggests that sexual conflict should promote the maintenance of genetic diversity by the opposing directions of selection on males and females. If such conflict is pervasive, it could potentially lead to genomic heterogeneity in levels of genetic diversity an idea that so far has not been empirically tested on a genome-wide scale. We used large-scale population genomic and transcriptomic data from the collared flycatcher (Ficedula albicollis) to analyse how sexual conflict, for which we use sex-biased gene expression as a proxy, relates to genetic variability. Here, we demonstrate that the extent of sex-biased gene expression of both male-biased and female-biased genes is significantly correlated with levels of nucleotide diversity in gene sequences and that this correlation extends to diversity levels also in intergenic DNA and introns. We find signatures of balancing selection in sex-biased genes but also note that relaxed purifying selection could potentially explain part of the observed patterns. The finding of significant genetic differentiation between males and females for male-biased (and gonad-specific) genes indicates ongoing sexual conflict and sex-specific viability selection, potentially driven by sexual selection. Our results thus indicate that sexual antagonism could potentially be considered as one viable explanation to the long-standing question in evolutionary biology of how genomes can remain so genetically variable in face of strong natural and sexual selection.
Data from: Interspecific transfer of parasites following a range-shift in Ficedula flycatchers
Human-induced climate change is expected to cause major biotic changes in species distributions and thereby including escalation of novel host-parasite associations. Closely related host species that come into secondary contact are especially likely to exchange parasites and pathogens. Two competing theories, the Enemy Release Hypothesis, where invading hosts escape their original parasites; and the Novel Weapon Hypothesis, where invading hosts bring new parasites that have detrimental effects on native hosts, have been described to predict what will happen after a host range-shift. However, few studies evaluate the occurrence of interspecific parasite transfer by performing wide-scale geographic sampling of pathogen lineages, both within and far from host contact zones. In this study, we investigate how haemosporidian (avian malaria) prevalence and lineage diversity vary in two, closely related species of passerine birds; the pied flycatcher Ficedula hypoleuca and the collared flycatcher F. albicollis in both allopatry and sympatry. We find that host species is generally a better predictor of parasite diversity than location, but both prevalence and diversity of parasites vary widely among populations of the same bird species. We also find a limited and unidirectional transfer of parasites from pied flycatchers to collared flycatchers in a recent contact zone. This study therefore rejects both the Enemy Release Hypothesis and the Novel Weapon Hypothesis and highlights the complexity and importance of studying host-parasite relationships in an era of global climate change and species range-shifts.
FIGURE 1 in Taxonomy of the European Pied Flycatcher Ficedula hypoleuca (Aves: Muscicapidae)
FIGURE 1. Map showing the approximate geographic distribution of the currently valid subspecies of F. hypoleuca (sensu del Hoyo et al. 2006) in their breeding grounds. The likely distribution of the population recognized as F. h. muscipeta by some authors is also indicated. It should be noted that the actual border between F. h. hypoleuca and F. h. tomensis is not clearly known; this is shown on the map by intergrading shades of grey.
Data from: Malaria infections reinforce competitive asymmetry between two Ficedula flycatchers in a recent contact zone
Parasites may influence the outcome of interspecific competition between closely related host species through lower parasite virulence in the host with which they share the longer evolutionary history. We tested this idea by comparing the prevalence of avian malaria (Haemosporidia) lineages and their association with survival in pied and collared flycatchers (Ficedula hypoleuca and F. albicollis) breeding in a recent contact zone on the Swedish island of Öland. A nested PCR protocol amplifying haemosporidian fragments of mtDNA was used to screen the presence of malaria lineages in 1048 blood samples collected during 6 years. Competitively inferior pied flycatchers had a higher prevalence of blood parasites, including the lineages that were shared between the two flycatcher species. Multistate mark–recapture models revealed a lower survival of infected versus uninfected female pied flycatchers, while no such effects were detected in male pied flycatchers or in collared flycatchers of either sex. Our results show that a comparatively new host, the collared flycatcher, appears to be less susceptible to a local northern European malarial lineage where the collared flycatchers have recently expanded their distribution. Pied flycatchers experience strong reproductive interference from collared flycatchers, and the additional impact of species-specific blood parasite effects adds to this competitive exclusion. These results support the idea that parasites can strongly influence the outcome of interspecific competition between closely related host species, but that the invading species need not necessarily be more susceptible to local parasites.
Data from: Egg size and offspring performance in the collared flycatcher (Ficedula albicollis): a within-clutch approach
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Data from: Short- and long-term effects of egg size and feeding frequency on offspring quality in the collared flycatcher (Ficedula albicollis)
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Data from: Paternity covaries with laying and hatching order in the collared flycatcher Ficedula albicollis
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Data from: The importance of competition for food and nest-sites in aggressive behaviour of Collared Flycatcher Ficedula albicollis
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Data from: Malaria infections reinforce competitive asymmetry between two Ficedula flycatchers in a recent contact zone
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