Effects of haematophagous mites on nestling house sparrows [Passer domesticus]

• Autorzy: Szabo K , Szalmas A , Liker A , Barta Z
• Języki publikacji: EN

Abstrakty

EN

Haematophagous mites are frequently found on nestling house sparrows (Passer domesticus), but their effects are poorly known. In this study we investigated whether natural levels of infection by two mite species Pellonyssus reedi and Ornithonyssus sylviarum have any fitness consequences on their hosts, including some physiological indices of chick health, body condition and fledging success. Among the haematological variables, thrombocytes and heterophils, but not lymphocytes and eosinophil granulocytes showed positive correlations with mite loads. There was also a significant decrease in the haematocrit values of the nestling sparrows with increasing mite intensity. We found no significant effect of ectoparasites on short- term indices of nestling fitness, such as body mass or fledging success. These results suggest that the blood-feeding mites of the studied house sparrow population mainly affected the haematological parameters of their hosts: They generated a non-specific immune response, with inflammatory processes and anaemia. On the other hand, parasite infestation seemingly has only weak influence on feather and skeletal growth of nestling sparrows, and no effect on fledging success and body mass.

Słowa kluczowe

EN

Pellonyssus reedi; hematological variable; fitness effect; anaemia; house sparrow; body mass; Ornithonyssus sylviarum; Passer domesticus; immune response; haematophagous mite

• Wydawca: -
• Czasopismo: Acta Parasitologica
• Rocznik: 2002
• Tom: 47
• Numer: 4
• Opis fizyczny: p.318-322,fig.

Twórcy

autor

Szabo K

• Behavioural Research Group, Department of Evolutionary Zoology and Humanbiology, University of Debrecen, H-4010 Debrecen, P.O.Box 3, Hungary

autor

Szalmas A

• Behavioural Research Group, Department of Evolutionary Zoology and Humanbiology, University of Debrecen, H-4010 Debrecen, P.O.Box 3, Hungary

autor

Liker A

• Behavioural Biology Research Group, Department of Ecology, Faculty of Veterinary Science, Szent Istvan University, H-1400 Budapest, P.O. Box 2, Hungary

autor

Barta Z

• Behavioural Research Group, Department of Evolutionary Zoology and Humanbiology, University of Debrecen, H-4010 Debrecen, P.O.Box 3, Hungary
• Centre for Behavioural Biology, Department of Mathematics, University of Bristol, Bristol BS8 1TW, UK

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