| borreliae in immature ixodes ricinus (acari:ixodidae) ticks parasitizing birds in the czech republic. | of 411 forest birds of 33 species examined near valtice, czech republic, 29% were infested with ixodes ricinus (l.); 2.2% were parasitized by haemaphysalis concinna koch. borreliae were detected in 5.1 and 11.7% of larval and nymphal i. ricinus, respectively. none of the 13 h. concinna tested was infected. in total, 3.2% of the birds examined were parasitized by i. ricinus immatures infected by borreliae. borreliae-containing ticks parasitized european robin, erithacus rubecula (l.); eurasian bl ... | 1996 | 8840682 |
| heterogeneous patterns of genetic diversity and differentiation in european and siberian chiffchaff (phylloscopus collybita abietinus/p. tristis). | identification of candidate genes for trait variation in diverging lineages and characterization of mechanistic underpinnings of genome differentiation are key steps toward understanding the processes underlying the formation of new species. hybrid zones provide a valuable resource for such investigations, since they allow us to study how genomes evolve as species exchange genetic material and to associate particular genetic regions with phenotypic traits of interest. here, we use whole-genome r ... | 2017 | 29054864 |
| characterization of plasmodium relictum, a cosmopolitan agent of avian malaria. | microscopic research has shown that plasmodium relictum is the most common agent of avian malaria. recent molecular studies confirmed this conclusion and identified several mtdna lineages, suggesting the existence of significant intra-species genetic variation or cryptic speciation. most identified lineages have a broad range of hosts and geographical distribution. here, a rare new lineage of p. relictum was reported and information about biological characters of different lineages of this patho ... | 2018 | 29720195 |
| geographic patterns of mtdna and z-linked sequence variation in the common chiffchaff and the 'chiffchaff complex'. | the common chiffchaff phylloscopus collybita is an abundant, polytypic palearctic bird. validity of some of its subspecies is controversial and birds from some parts of the species range remain unclassified taxonomically. the relationships among populations from different geographic areas have not been sufficiently explored with molecular data. in this study we analyzed the relationships among the four species in the 'chiffchaff complex' (common chiffchaff, iberian chiffchaff p. ibericus, canary ... | 2019 | 30608988 |
| aircraft sound exposure leads to song frequency decline and elevated aggression in wild chiffchaffs. | the ubiquitous anthropogenic low-frequency noise impedes communication by masking animal signals. to overcome this communication barrier, animals may increase the frequency, amplitude and delivery rate of their acoustic signals, making them more easily heard. however, a direct impact of intermittent, high-level aircraft noise on birds' behaviour living close to a runway has not been studied in detail. we recorded common chiffchaffs phylloscopus collybita songs near two airports and nearby contro ... | 2019 | 31435938 |
| no relationship between territory size and the risk of cuckoldry in birds. | it has been suggested that male birds adjust their territory size in order to prevent potential intruders from gaining extra-pair copulations. the risk of cuckoldry is supposed to be highest when the distance between a female and the neighbouring males is shortest. this paper describes the variation in territory size of the chiffchaff, phylloscopus collybita, in relation to the breeding cycle. contrary to the risk of cuckoldry hypothesis, chiffchaff territories were larger prior to the fertile p ... | 1998 | 9632478 |
| amplified fragment length polymorphism analysis identifies hybrids between two subspecies of warblers. | in the western pyrenees (southwest france and northwest spain), a narrow hybrid zone exists between the common chiffchaff phylloscopus (collybita) collybita and the iberian chiffchaff phylloscopus (c.) brehmii. in this zone, which is approximately 20 km wide, mixed matings and individuals singing the songs of both taxa occur at substantial frequencies (24 and 8.6%, respectively), suggesting frequent hybridization. previous studies have shown very weak mitochondrial gene flow (nm = 0.065), wherea ... | 2002 | 11918782 |
| resistance of flight feathers to mechanical fatigue covaries with moult strategy in two warbler species. | flight feather moult in small passerines is realized in several ways. some species moult once after breeding or once on their wintering grounds; others even moult twice. the adaptive significance of this diversity is still largely unknown. we compared the resistance to mechanical fatigue of flight feathers from the chiffchaff phylloscopus collybita, a migratory species moulting once on its breeding grounds, with feathers from the willow warbler phylloscopus trochilus, a migratory species moultin ... | 2005 | 17148120 |
| genetic and vocal differentiation in hybrid zones of passerine birds: siberian and european chiffchaffs (phylloscopus [collybita] tristis and ph. [c.] abietinus) in the southern urals. | | 2016 | 19760890 |
| being angry, singing fast? signalling of aggressive motivation by syllable rate in a songbird with slow song. | syllable rate has been shown to play a role in male-male aggressive interactions and has been proposed to serve as a male quality indicator in several bird species. in those with fast syllable rates, males often increase rates when singing in aggressive context, and respond differently to test stimuli of varying rates. we asked whether the syllable rate fulfils a similar signalling function in the chiffchaff (phylloscopus collybita), a songbird species with a slow syllable rate. we confronted 36 ... | 2013 | 24050853 |
| patterns of genetic, phenotypic, and acoustic variation across a chiffchaff (phylloscopus collybita abietinus/tristis) hybrid zone. | characterizing patterns of evolution of genetic and phenotypic divergence between incipient species is essential to understand how evolution of reproductive isolation proceeds. hybrid zones are excellent for studying such processes, as they provide opportunities to assess trait variation in individuals with mixed genetic background and to quantify gene flow across different genomic regions. here, we combine plumage, song, mtdna and whole-genome sequence data and analyze variation across a sympat ... | 2017 | 28405281 |
| [european species of mallophaga genus pleurinirmus]. | the genus pleurinirmus zlot. has been erected monotypically. in this paper, 4 further species are added. of these, the following 3 are described as new on the basis of polish and finnish material on: p. affectator n. sp. from sylvia borin, p. phylloscopi n. sp. from phylloscopus trochilus, and p. rarus n. sp. from phylloscopus collybita. | 1976 | 1008293 |
| [morphology of pleurinirmus phylloscopus and menacanthus sp., 2 mallophagas of phylloscopus collybita in spain]. | | 1981 | 7305072 |
| effect of climate change on mediterranean winter ranges of two migratory passerines. | we studied the effect of climate change on the distribution of two insectivorous passerines (the meadow pipit anthus pratensis and the chiffchaff phylloscopus collybita) in wintering grounds of the western mediterranean basin. in this region, precipitation and temperature can affect the distribution of these birds through direct (thermoregulation costs) or indirect effects (primary productivity). thus, it can be postulated that projected climate changes in the region will affect the extent and s ... | 2016 | 26761791 |
| influences of population size and woodland area on bird species distributions in small woods. | distributions of individual bird species in 151 small woods (size range 0.02-30 ha) were investigated in 3 consecutive years during which the abundance of certain species varied markedly. relationships between the probabilities of certain bird species breeding and woodland area were described using incidence functions derived from logistic regression analysis. in general, for species which were largely dependent on woodland and seldom occurred in other habitats (such as hedgerows and gardens), t ... | 1996 | 28307128 |
| habitat use and body mass regulation among warblers in the sahel region during the non-breeding season. | migratory birds face significant challenges across their annual cycle, including occupying an appropriate non-breeding home range with sufficient foraging resources. this can affect demographic processes such as over-winter survival, migration mortality and subsequent breeding success. in the sahel region of africa, where millions of migratory songbirds attempt to survive the winter, some species of insectivorous warblers occupy both wetland and dry-scrubland habitats, whereas other species are ... | 2014 | 25426716 |
| the importance of ixodes arboricola in transmission of rickettsia spp., anaplasma phagocytophilum, and borrelia burgdorferi sensu lato in the czech republic, central europe. | abstract wild birds are known to be a reservoir of infectious disease agents and disseminatory hosts of ticks. the purpose of this work was to obtain information about the occurrence of rickettsial, anaplasmal, and borrelial infections in some ticks that parasitize wild birds in the czech republic. a total of 549 subadult ticks of three species ixodes arboricola (75.0%), ixodes ricinus (23.1%), and haemaphysalis concinna (1.8%) were collected from 20 species of birds (passeriformes). rickettsiae ... | 2011 | 21612531 |
| [new hosts of some nematodes--parasites of passeriformes]. | parasitic nematodes very rarely exist in birds that are completely or predominantly herbivorous. the investigation of the helminth fauna of passeriformes in the region of lower silesia revealed new hosts for some nematode species. we found in acrocephalus scirpaceus--acuaria subula and microtetrameres inermis; in fringilla coelebs and in luscinia megarhynchos--dispharynx nasuta; in passer montanus--capillaria angusta; in phylloscopus trochiloides--acuaria subula as well in phylloscopus collybita ... | 2008 | 19055064 |
| conflicting patterns of mitochondrial and nuclear dna diversity in phylloscopus warblers. | molecular variation is often used to infer the demographic history of species, but sometimes the complexity of species history can make such inference difficult. the willow warbler, phylloscopus trochilus, shows substantially less geographical variation than the chiffchaff, phylloscopus collybita, both in morphology and in mitochondrial dna (mtdna) divergence. we therefore predicted that the willow warbler should harbour less nuclear dna diversity than the chiffchaff. we analysed sequence data o ... | 2006 | 16367838 |
| prevalence of borrelia burgdorferi sensu lato in the nightingale (luscinia megarhynchos) and other passerine birds. | in order to explore the involvement of terrestrial birds in the ecology of lyme disease spirochetes, we determined the presence of borrelia burgdorferi s. i. dna in tick larvae feeding on the hosts. birds were caught at several study sites along the rhine valley in sw germany between august 1999 and march 2001. a total of 987 ixodes ricinus larvae were collected from 225 birds belonging to 20 host species. the following four passerine species that have not yet been subject to detailed reservoir ... | 2002 | 12141765 |
| estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds. | mist netting is the most commonly used method for catching birds for scientific ringing, but despite decades of use, there have been few attempts to quantify the associated potential risks to the individuals caught. any incidence of mortality through capture and handling, however low, is of potential ethical concern and may also introduce biases into the data. we estimate the mortality rate associated with capture of previously ringed (recaptured) passerines from the british and irish ringing sc ... | 2018 | 29876090 |