title: [Occurrence of acanthocephalans in Perca fluviatilis L. from the Długa river (Mazowiecka Lowland, Poland)].
abstract: Material was collected from fish caught in the Długa river near Halinów (Mazowiecka Lowland). One hundred forty eight perches Perca fluviatilis L., 1875 were examined during the study period (January 2003-March 2004). Seventy one (47.97%) out of all caught fishes were infected with three species of the acanthocephalans: Acanthocephalus lucii (Müller, 1776), Acanthocephalus anguillae (Müller, 1780) and Metechinorhynchus salmonis Müller, 1780. Most fishes (40.54%) were infected by Acanthocephalus lucii, much less infection was noted with Acanthocephalus anguillae--4.73% and with Metechinorhynchus salmonis--3.38%. The highest prevalence and intensity of infection with the three species of acanthocephalans were recorded in spring and summer, the lowest--in autumn and winter. The collected data allowed to analyse the occurrence of acanthocephalans in particular parts of alimentary tract of fish. Two species: A. anguillae, M. salmonis were found only in the middle part of the intestine, while A. lucii were noted in each part of the alimentary tract. The highest number of individuals of A. lucii was noted in middle intestine, the lowest number was found in pyloric appendices and stomach. At the high intensity of infection the parasites were found in all parts of the alimentary tract, nevertheless with clear preference to the middle intestine.
authors.affiliation: Katedra Biologii Srodowiska Zwierzat, Zakład Zoologii SGGW, ul. Ciszewskiego 8, 02-787 Warszawa.
authors.forename: Hanna
authors.initials: H
authors.lastname: Franikowska
authors.forename: Teresa
authors.initials: T
authors.lastname: Sulgostowska
mesh_terms: D000049:Acanthocephala / Q000302:isolation & purification*; D000818:Animals; D004064:Digestive System / Q000469:parasitology; D005393:Fish Diseases / Q000453:epidemiology*; D006374:Helminthiasis, Animal / Q000453:epidemiology*; D010471:Perches / Q000469:parasitology*; D011044:Poland / Q000453:epidemiology; D045483:Rivers / Q000469:parasitology*; D012621:Seasons