Wyniki wyszukiwania

1

Coccidia in passerines from the Nevado de Toluca National Park, Mexico

100%

Medina J. P., Salgado-Miranda C., Garcia-Conejo M., Galindo-Sanchez K. P., Mejia-Garcia C. J., Janczur M. K., Gomes Lopes C. W., Berto B. P., Soriano-Vargas E.

Acta Parasitologica

|

2015

|

tom 60

|

nr 1

2

Plumage bacterial load is related to species, sex, biometrics and fledging success in co-occurring cavity-breeding passerines

84%

Saag P., Mand R., Tilgar V., Kilgas P., Magi M., Rasmann E.

Acta Ornithologica

|

2011

|

tom 46

|

nr 2

Plumage bacteria might influence the trade-off between parental and self-preening efforts in birds, therefore affecting breeding success. However, too little is known about natural variation patterns in plumage bacterial communities for these hypotheses to be thoroughly assessed. We studied the density and phylotypic richness of plumage bacterial assemblages in wild breeding populations of Pied Flycatchers Ficedula hypoleuca and Great Tits Parus major in the same area and breeding season, using flow cytometry and ribosomal intergenic spacer analysis (RISA). The density of plumage bacteria was higher in Tits than in Flycatchers, providing evidence that bacterial microflora differs even between co-occurring hosts that share habitat, nest site and foraging preferences. It is concurrent with the finding that migratory birds might have lower bacterial loads than sedentary birds. In both species bacterial loads were higher in females than in males, which along with two earlier studies, indicates the generality of this sex pattern. A negative correlation between parental body mass and the richness of feather-degrading bacterial phylotypes was found in Pied Flycatchers. In Great Tits, higher bacterial densities in the plumage of parent birds were associated with the production of fewer fledglings. However, the causality of these associations remains to be tested experimentally.

3

Factors influencing occurrence of passerines in the reed archipelago of Lake Velence (Hungary)

84%

Baldi A.

Acta Ornithologica

|

2006

|

tom 41

|

nr 1

4

Saluga and Ghazal Ringing Station - a new ringing station in Egypt

84%

Hasseb M., Ibrahim W., Asran H., Deyab A., Gomaa M., Hassan S., Nowakowski J. K., Busse P.

The Ring

|

2004

|

tom 26

|

nr 2

5

The bird ectoparasite Dermanyssus hirundinis (Acari, Mesostigmata) in the High Arctic; a new parasitic mite to Spitsbergen, Svalbard

67%

Gwiazdowicz D. J., Coulson S. J., Grytnes J.-A., Pilskog H. E.

Acta Parasitologica

|

2012

|

tom 57

|

nr 4

Ectoparasites are common on birds and in their nests. Amongst these parasites are diverse gamasid mite species that can lead to irritation, disease transmission and blood loss. Few studies of the ectoparasites of birds breeding in the High Arctic exist. The parasitic mite, Dermanyssus hirundinis, was found in nests of snow buntings Plectrophenax nivalis nivalis, both natural nests and within nesting boxes, on Spitsbergen. Densities per nest varied from sporadic to greater than 26,000 individuals. This is the northernmost observation of this parasite. The mite was present in new nests, nests constructed the previous year and nests not utilized the previous summer. The parasite survives at least 18 months without access to a blood meal and can tolerate the Arctic winter, surviving temperatures below −20°C. D. hirundinis is hence well adapted to arctic conditions. Only females were observed suggesting that this population is facultatively parthenogenetic.

6

A new genus and species of pterodectine feather mite (Acari: Proctophyllodidae) from Tod-Tyrants in Brazil (Passeriformes: Tyrannidae)

67%

Hernandes F. A.

Acta Parasitologica

|

2013

|

tom 58

|

nr 3

A new genus and species of feather mite, Hemitriccodectes furcatus gen. nov., sp. nov., is described from passerines of the genus Hemitriccus from Brazil: Hemitriccus furcatus, H. margaritaceiventer and H. striaticollis (Tyrannidae). The new genus belongs to the Pterodectes generic complex and most clearly differs from previously established genera of this complex by the following combination of features: trochanteral setae sRIII are present, and solenidia σ are absent from genua III. The new genus also lacks dorsal hysteroromal setae c1.

7

Skeletal injuries of passerines caused by road traffic

67%

Orlowski G., Siembieda J.

Acta Ornithologica

|

2005

|

tom 40

|

nr 1

15-19

Radiographic examination oi 35 birds (17 species) killed on roads revealed bone injuries in 17 (47%) cases. There were 30 different kinds of injuries to the skeletal system. In 29 cases these fractures concerned the long bones of the wings (n = 15) and the lower extremities (n = 14). One bird had a dislocated spinal column. Wing fractures affected the humerus (n = 6), radius (n = 6) and ulna (n = 3), while leg fractures affected the femur (n = 5), tibiotarsus (n = 8) and tarsometatarsus (n = 1). No relationship was found between the body weight and the location and number of bone injuries. In our opinion, the nature and type of skeletal injuries suggest that they were not the direct cause of death.

8

Migratory state: body mass and fat level of some passerine long-distance migrants during autumn migration in North-Eastern Bulgaria

67%

Ilieva M., Zehtindjiev P.

The Ring

|

2005

|

tom 27

|

nr 1

9

Nestling food of European hole-nesting passerines: do we know enough to test the adaptive hypotheses on breeding seasons?

43%

Cholewa M., Wesolowski T.

Acta Ornithologica

|

2011

|

tom 46

|

nr 2

Hole-nesting passerines constitute a 'model' group for which importance of synchronisation between food availability — mainly caterpillars — and appearance of nestlings is commonly postulated. Is there an adequate set of data allowing one to prove this relationship? The recent climate change could lead to a mis-match between food peaks and nestlings' appearance. Do the data exist that show that the birds have switched to other food sources? We analyse data on nestling food of eleven European hole-nesting passerines (158 papers). The diet of some species is hardly known (< 100 broods observed), there are large gaps in geographical coverage (70% of data from five countries — Germany, Russia, Slovakia/Czech Republic, Poland and Great Britain) and most of studies do not meet the minimum requirement of representativeness (three seasons, > 20 broods/season), which limits their external validity. The majority of investigations were done decades ago, in different conditions and most probably they cannot be treated as representative for the current situation. There is no study in which the past (before warming) and current nestling diet in the same local population have been compared, so, direct empirical support for the 'mismatch' idea is rather weak. Knowledge of nestling diet and its variation is far from adequate and new, properly designed, studies are needed.

Ograniczanie wyników

Coccidia in passerines from the Nevado de Toluca National Park, Mexico

Plumage bacterial load is related to species, sex, biometrics and fledging success in co-occurring cavity-breeding passerines

Factors influencing occurrence of passerines in the reed archipelago of Lake Velence (Hungary)

Saluga and Ghazal Ringing Station - a new ringing station in Egypt

The bird ectoparasite Dermanyssus hirundinis (Acari, Mesostigmata) in the High Arctic; a new parasitic mite to Spitsbergen, Svalbard

A new genus and species of pterodectine feather mite (Acari: Proctophyllodidae) from Tod-Tyrants in Brazil (Passeriformes: Tyrannidae)

Skeletal injuries of passerines caused by road traffic

Migratory state: body mass and fat level of some passerine long-distance migrants during autumn migration in North-Eastern Bulgaria

Nestling food of European hole-nesting passerines: do we know enough to test the adaptive hypotheses on breeding seasons?