Fitting a bivariate negative binomial model to the distribution of bird lice [Phthiraptera, Mallophaga] parasitizing the pheasant [Phasianus colchicus L.]

• Autorzy: Kopocinski B , Lonc E , Modrzejewska M
• Języki publikacji: EN

Abstrakty

EN

The frequency distributions of seven lice species: Amyrsidea perdicis megalosoma (Overgaard, 1943), Uchida phasiani Modrzejewska et Złotorzycka, 1977 (suborder Amblycera), Goniocotes chrysocephalus Giebel, 1874, Zlotorzyckella colchici (Denny, 1842), Lipeurus maculosus maculosus Clay, 1938, Reticulipeurus mesopelios colchicus (Clay, 1938) and Lagopoecus colchicus Emerson, 1949 (suborder Ischnocera) parasitizing the pheasant (Phasianus colchicus L.) were characterized with various statistical parameters (mean, range, prevalence and standard deviation) together with three indices of parasite aggregation: parameter α of the negative binomial distribution, coefficient of dispersion (c.d.) as a dispersion to mean ratio (or s/x) and index of discrepancy (D of Poulin’s index). A complex set of measures of aggregations confirmed the aggregated distributions of all parasite species; in all the series analysed the bird lice distributions fit the negative binomial model. Two parameters α and D of Poulin were correlated, i.e. high values of α were associated with low values of D.

Słowa kluczowe

EN

pheasant; Amyrsidea perdicis megalosoma; louse species; Lipeurus maculosus maculosus; Phasianus colchicus; bird louse; Zlotorzyckella colchici; biocenotic factor; biotic factor; Reticulipeurus mesopelios colchicus; population; host; parasite; Uchida phasiani; Phthiraptera; life cycle; louse; Lagopoecus colchicus; Mallophaga; distribution; seasonal prevalence; Goniocotes chrysocephalus

• Wydawca: -
• Czasopismo: Acta Parasitologica
• Rocznik: 1998
• Tom: 43
• Numer: 2
• Opis fizyczny: p.81-85

Twórcy

autor

Kopocinski B

• Department of Application of Mathematics, Mathematical Institute, University of Wroclaw, Pl.Grunwaldzki 2-4, 50-384 Wroclaw, Poland

autor

Lonc E

• Department of General Parasitology, Microbiological Institute, University of Wrocław, Przybyszewskiego 63/77, 51-138, Wrocław, Poland

autor

Modrzejewska M

• Department of General Parasitology, Microbiological Institute, University of Wrocław, Przybyszewskiego 63/77, 51-138, Wrocław, Poland

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