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001-es BibID:	BIBFORM063043
Első szerző:	Fülöp Attila (biológus)
Cím:	Feather-degrading bacteria, uropygial gland size and feather quality in House Sparrows Passer domesticus / Attila Fülöp, Gábor A. Czirják, Peter L. Pap, Csongor I. Vágási
Dátum:	2016
ISSN:	0019-1019 1474-919X
Megjegyzések:	Feathers are dead integumentary structures that are prone to damage and thus showgradual degradation over the course of a year. This loss of quality might have negativefitness consequences. Feather-degrading bacteria are some of the most prevalent feather-degrading organisms, yet the relationship between feather-degrading bacteria load andflight feather quality has rarely been assessed. We studied this relationship in free-livingHouse Sparrows during breeding and non-breeding annual lifecycle stages. We also con-sidered the size of the uropygial gland, given the antimicrobial function of its secretions,and the effect of body condition. The number of feather holes was positively associatedwith feather-degrading bacteria load and was negatively related to uropygial gland sizeand body condition during the breeding season in both sexes. In the non-breeding seasonwe found the same relationships, but only in females. The degree of feather wear wasunrelated to any of the variables measured during the breeding season, whereas it wasnegatively associated with uropygial gland size and positively with feather-degrading bac-teria load in the non-breeding season, but only in females. Our results suggest thatfeather-degrading bacteria may induce the formation of feather holes, but play only aminor role in the abrasion of flight feathers.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban feather hole feather wear feather structure keratinolytic microorganisms preen oil Élettudományok - Biológiai tudományok
Megjelenés:	IBIS : the international journal of avian science. - 158 : 2 (2016), p. 362-370. -
További szerzők:	Czirják Gábor Á. Pap Péter László (ökológus) Vágási Csongor István
Pályázati támogatás:	OTKA_K112527 OTKA
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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001-es BibID:	BIBFORM119682
035-os BibID:	(Scopus)85186884052 (WOS)001177798600001 (cikkazonosító)13318
Első szerző:	Jones, William
Cím:	Haemosporidian infections are more common in breeding shorebirds than in migrating shorebirds / William Jones, Zsófia Tóth, Viacheslav Khursanov, Nastassia Kisliakova, Oliver Krüger, Tamás Székely, Natalia Karlionova, Pavel Pinchuk, Nayden Chakarov
Dátum:	2024
ISSN:	0019-1019
Megjegyzések:	Migrating animals are thought to be important spillover sources for novel pathogens. Haemosporidians (malaria-related parasites) are one such group of pathogens that commonly spillover into novel host communities if competent vectors are present. In birds, shorebirds (sandpipers, plovers and allies) perform some of the longest avian migrations, yet they are traditionally perceived as relatively free from haemosporidians. Although low prevalence fits several theories, such as effective immune responses or low exposure to vectors, few studies have been carried out in freshwater inland sites, where the vectors of haemosporidians (e.g. mosquitoes) are abundant, with a mixture of actively migrating (staging) and breeding hosts. Here we report the prevalence of three haemosporidian parasites, Haemoproteus, Leucocytozoon and Plasmodium, screened in 214 shorebirds from 15 species sampled in a freshwater marshland, southern Belarus. Contrary to most previous studies, we found that haemosporidians were frequent, with an overall prevalence in the community of 16.36%, including the locally breeding shorebirds (23.13%, 134 individuals of 10 species). However, actively migrating shorebirds had much lower prevalence (0.05%, 55 individuals of five species). We suggest that blood parasite infections are more common in shorebirds than currently acknowledged. Yet, actively migrating species may be free from haemosporidians or carry suppressed infections, leading to lower prevalence or even apparent absence in some species. Taken together, we theorize that a combination of sampling biases has driven our understanding of haemosporidian prevalence in shorebirds and future studies should take the migratory status of individuals into account when reporting prevalence. Furthermore, we argue that birds undergoing active migration may be less likely sources of spillover events than previously assumed.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Avian malaria community ecology infection migration shorebird
Megjelenés:	Ibis. - "Accepted by Publisher" : - (2024), p.1-14. -
További szerzők:	Tóth Zsófia (1991-) (biológus) Khursanov, Viacheslav Kisliakova, Nastassia Krüger, Oliver Székely Tamás (1959-) (biológus) Karlionova, Natalia Pinchuk, Pavel Chakarov, Nayden
Pályázati támogatás:	ÉLVONAL KKP-12694 Egyéb NTP-NFTÖ-21-B-034 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM022540
Első szerző:	Pap Péter László (ökológus)
Cím:	Frequency and consequences of feather holes in Barn Swallows Hirundo rustica / Péter László Pap, Jácint Tökölyi, Tibor Szép
Dátum:	2005
ISSN:	0019-1019
Megjegyzések:	The relationship between feather quality, estimated through the prevalence and intensity of feather holes, and the breeding performance and survival of the Barn Swallow Hirundo rustica was studied over a 5-year period. In addition, we present some indirect data on the role of chewing lice in producing the feather holes. The balanced distribution of feather holes (high prevalence, low aggregation) corresponds with the pattern of distribution of lice on colonial birds, and in the Barn Swallow. Feather holes were significantly and positively associated with the arrival dates of the birds, as both males and females with an increased number of feather holes started laying later. Females that survived the winter had significantly fewer holes than non-surviving females, whereas there was no difference in feather hole number between surviving and non-surviving males. Given that there was no association between the number of feather holes and body condition indices, except for the tail length of male Barn Swallows, we suggest that the negative effect of feather holes on the fitness of the birds is mainly apparent during periods of intensive locomotor activity, such as migration. Alternatively, if feather holes are an indicator of quality, those birds with a high intensity of feather holes may have been of poor quality. These birds may have been less able to cope with the environmental conditions, resulting in the lower survival and later arrival of the birds to the breeding grounds. The negative relationship between the length of the outermost tail feathers of males and the incidence of feather holes suggests that the tail is a condition-dependent secondary sexual characteristic.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	The Ibis. - 147 : 1 (2005), p. 169-175. -
További szerzők:	Tökölyi Jácint (1984-) (biológus) Szép Tibor
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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