Infestation dynamics of external parasites of saithe (Pollachius virens) from the North and Norwegian Seas

• Autorzy: Rokicki J. , Stromberg J.-O.

Warianty tytułu

PL

Dynamika infestacji pasożytami zewnętrznymi czarniaka (Pollachius virens) z Morza Północnego i Norweskiego

• Języki publikacji: EN

Abstrakty

EN

An attempt has been made to examine the saithe's external parasites with respect to host age and the reproduction time of Clavella adunca in the North Sea. 1835 specimens of Pollachius virens caught in 1976-1980 and 1986 were examined. They were infested with Diclidophora denticulata, Udonella caligorum ( Monogenea) and Clavella adunca. Lepeophtheirus pollachius. Caligus elongatus (Copepoda). The large number of adult females of C. adunca in winter and spring, the juvenile forms in summer and forms of 4th developmental phase autumn suggest that the reproduction cycle runs over the year in the North Sea with the peak between the late spring and early summer. The intensity values of infestation are highest for sexually mature fish but fall in older ones.

• Wydawca: -
• Czasopismo: Wiadomości Parazytologiczne
• Rocznik: 1991
• Tom: 37
• Numer: 1
• Opis fizyczny: p.155-162,fig.,ref.

Twórcy

autor

Rokicki J.

• Department of Invertebrate Zoology, University of Gdansk, Al.Pilsudskiego 46, 81-378 Gdynia

autor

Stromberg J.-O.

• Kristineberg Marine Biological Station, Royal Swedish Academy of Sciences, Kristineberg, Sweden

Bibliografia

• Boxshall G. A. 1974. Infection with parasitic copepods in North Sea marine fishes. J. Mar. Biol. Ass. U. K. 54: 355-372.
• Gjosaeter J. 1987. Morphological and ecological studies of Clavella adunca (Copepoda, Lernaeopodidae) on Polar cod, Boreogadus saida. Sarsia 72: 291-297.
• Heegarrd P. 1947. Contribution to the phylogeny of the Arthropoda-Copepoda. Spolia Zool. Mus. Hauniensis 8: 21-154.
• Janusz J . 1979. Occurrence of the parasite Clavella adunca (Strøm, 1762) (Copepoda parasitica: Lernaeopodidae) in the cod (Gadus morhua L.) from North Atlantic waters. Acta Ichthyol. Piscat. 9: 37 -54.
• Kabata Z. 1960. Observations on Clavella (Copepoda) parasitic on some British Gadoids. Crustaceana 1: 342 -352.
• Oorde-de Lint G. M., Schuurmans Stekhoven Jr. J . H. 1936. Copepoda parasitica. Tierwelt der Nord und Ostsee 10 (c): 73-197.
• Poljanskij J . I. 1955. Materiały po parazitologii ryb severnych morej SSSR. Parazity ryb Barentsogo Morja. Trudy Zool. Inst. AN SSSR 19: 103-104.
• Reinsch H. H. 1976. Köhler und Steinköhler. A. Ziemsen Verl. Wittenberg Lutherstadt.
• Schram T. A. 1980. The parasitic copepods Clavella adunca (Strøm), Haemobaphes cyclopterina (Fabricius), and Sphyrion lumpi (Krøyer), on Polar cod, Boreogadus saida (Lepechin) from Spitsbergen, Sarsia 65: 273 -286.
• Shotter R. A. 1971. The biology of Clavella uncinata (Müller), (Crustacea: Copepoda). Parasitology 63: 419-430.
• - . 1973. Changes in the parasite fauna of whiting Odontogadus merlangus (L.) with age and sex of host, season, from different areas in the vici nity of the Isle of Man. J . Fish Biol. 5: 559 -573.
• Sproston N. G., Hartley P. T. 1941. The ecology of some parasitic Copepods of Gadoids and other fishes. J. Mar. Biol. Ass. UK 25: 366-387.