2000
Dactylogyrus carpathicus and D. malleus (Monogenea: Dactylogyridae) parasite on gills of barbels (Barbus barbus): infection dynamics and distribution within the population of fish host
GELNAR, Milan; Dušan KADLEC; Ladislav DUŠEK a Robert KONEČNÝZákladní údaje
Originální název
Dactylogyrus carpathicus and D. malleus (Monogenea: Dactylogyridae) parasite on gills of barbels (Barbus barbus): infection dynamics and distribution within the population of fish host
Autoři
GELNAR, Milan; Dušan KADLEC; Ladislav DUŠEK a Robert KONEČNÝ
Vydání
Folia Parasitologica, Česká rapublika, Institute of Patasitology, Acad. Sci. 2000, 0015-5683
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 0.844
Kód RIV
RIV/00216224:14310/00:00002574
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova anglicky
monogenea; gill parasites; infection dynamics; fish host age; frequency distribution
Změněno: 19. 12. 2000 09:44, prof. RNDr. Milan Gelnar, CSc.
Anotace
V originále
During the investigations of metazoan parasites of barbels (Barbus barbus L.) originating from the River Danube between Austrian villages Klosterneuburg and Mitterhaufen the seasonal aspects of occurrence and distribution of two monogenean gill parasites - Dactylogyrus carpathicus and D. malleus were investigated. Comparing the Dactylogyrus species, both prevalence and intensity of infection were apparently higher in D. carpathicus. There was no correlation between both species in seasonal fluctuations of prevalence while the seasonal changes in the intensity of infection correlated significantly between studied species, fluctuations of D. malleus being quantitatively higher. Classification of fish according to their size provided an effective basis for comparison of epidemiological field data. Levels of prevalence were not dependent on fish size and the prevalence appeared to be higher for D. carpathicus within all categories of fish size. On the contrary, difference in mean intensity of infection strongly depended on fish size. Significant increase in mean intensity of D. malleus appeared to be associated with higher age categories (8 -14 years) and relatively young host fish (age < 3 years) could be characterized by significantly decreased mean intensity of D. carpathicus. Prevalence of D. carpathicus was increased in males while no significant difference between sexes in the intensity of infection was observed in this species. On the other hand, D. malleus reached the same prevalence in both sexes while significantly higher intensity of infection was detected in the case of males. D. carpathicus did not show overdispersion pattern of frequency distribution which was determined as random. The frequency distribution of D. malleus was aggregated and showed typical overdispersion pattern. The biological significance of these observations is discussed.
Návaznosti
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