D 2004

Relationship among Gyrodactylus species (Monogenea) and their fish hosts under experimental conditions.

BLAŽEK, Radim, Anna BAGGE and E.T. VALTONEN

Basic information

Original name

Relationship among Gyrodactylus species (Monogenea) and their fish hosts under experimental conditions.

Name in Czech

Vztahy cizopasníků rodu Gyrodactylus a jejich rybích hostitelů v experimentálních podmínkách

Authors

BLAŽEK, Radim (203 Czech Republic, guarantor), Anna BAGGE (246 Finland) and E.T. VALTONEN (246 Finland)

Edition

Report series No. 12. Tallin, Estonia, Programme and Abstracts of XI European Congress of Ichthyology, p. 64-65, 212 pp. 2004

Publisher

Estonian Marine Institute

Other information

Language

English

Type of outcome

Proceedings paper

Field of Study

10600 1.6 Biological sciences

Country of publisher

Estonia

Confidentiality degree

is not subject to a state or trade secret

RIV identification code

RIV/00216224:14330/04:00019965

Organization unit

Faculty of Informatics

ISBN

9985-4-0396-7

Keywords in English

Gyrodactylus; host parasite interactions
Changed: 27/4/2006 20:35, RNDr. JUDr. Vladimír Šmíd, CSc.

Abstract

V originále

The members of genus the Gyrodactylus Nordmann, 1832 (Monogenea: Gyrodactylidae) are common parasites of freshwater fish. These viviparous monogenean parasites usually occur on the skin, fins and the gill apparatus of the host fish. Spatial distribution and migration of gyrodactylids over fish body are closely connected. The differences in preferred niches among Gyrodactylus species exist. Host range differs among Gyrodactylus species. Species attacking single host species are known as specialists and species which can attack more than one fish species as generalists. Several experiments were performed to test host specificity and the abilities of Gyrodactylus species to switch the host fish under experimental conditions using parasites of different strategy (eg. specialist vs. generalist species). Related fish species were kept in experimental tanks together and separately. After three weeks all fish were examined for the presence of monogenean parasites to see the situation. The first group included two fish species of family Cyprinidae, roach (Rutilus rutilus, L.) and minnow (Phoxinus phoxinus, L.). The second group two species of the Percidae, perch (Perca fluviatilis, L.) and ruffe (Gymnocephalus cernuus, L.). A total of 21 species of monogeneans parasites belonging to 5 genera were observed, among them 9 species of the genus Gyrodactylus were determined. Gyrodactylus cernuae was the only one species observed on ruffe and perch. According to our observation this parasite probably doesnt survive for longer period on perch. There was found 4 species of Gyrodactylus on roach and 6 species on minnow. G. vimbi attacked both cyprinid fish species in the cases of putted together or separately. Other Gyrodactylus species were strictly host specific. Most of gyrodactylids on the roach and minnow were situated on fins. On the other hand perch and ruffe were mainly infected by gyrodactylids on the gill apparatus and mouth.

In Czech

Hostitelská specifita a vztahy cizopasníků rodu Gyrodactylus byly sledovány v experimentálních podmínkách.

Links

GA524/04/1115, research and development project
Name: Fluktuační asymetrie rybích parazitů: nový přístup ke stanovení environmentálního stresu vodního ekosystému?
Investor: Czech Science Foundation, Fluctuating asymmetry in fish parasites: a new approach to assess environmental changes of aquatic ecosystem?