Parasites of young Baltic cod, Gadus morhua callarias L. in the Gulf of Puck, Poland

• Autorzy: Pilecka-Rapacz M , Sobecka E.
• Języki publikacji: EN

Abstrakty

EN

Background. The hitherto published records of the parasite fauna of Baltic cod, Gadus morhua callarias cover commercially-caught adult fish. The aim of this study was to determine the composition of the parasite fauna of young Baltic cod, the relevant infection parameters and to relate those data to published records on the diet of cod. Materials and Methods. This survey was carried out on 154 young cod, caught in May and June 2002 in the Gulf of Puck, the Baltic Sea, Poland. The fish were examined using standard methods applied in parasitology. Results. No external parasites were found. In the digestive tracts of 58 cod, 3 species of parasites belonging to 2 higher taxa (Nematoda and Acanthocephala) were found. The dominant parasite was Echinorhynchus gadi Zoega in Müller, 1776. The mean abundance ranged from 0.15 to 2.75. The prevalence ranged from 14.6%, in the smallest fish, to 66.7% in the larger ones. Only two acanthocephalan specimens of Pomphorhynchus laevis (Zoega in Müller, 1776) and five nematode larvae of Hysterothylacium aduncum (Rudolphi, 1802) were found. Conclusion. The parasite fauna of young Baltic cod is significantly sparser than in larger fish examined by other authors. It is suggested that the occurrence of the species found, can be related to the composition of diet available.

Słowa kluczowe

EN

parasite; Baltic cod; fish; cod; Gadus morhua callarias; Nematoda; gastrointestinal tract; Acanthocephala; young cod; Gadidae

• Wydawca: -
• Czasopismo: Acta Ichthyologica et Piscatoria
• Rocznik: 2004
• Tom: 34
• Numer: 2
• Opis fizyczny: p.235-240,ref.

Twórcy

autor

Pilecka-Rapacz M

• University of Szczecin, Felczaka 3c, 71-412 Szczecin, Poland

autor

Sobecka E.

Bibliografia

• Buchmann K., 1988. Variation of the infection level of Echinorhynchus gadi (Acanthocephala) in Baltic cod (Gadus morhua). Bulletin of the European Association of Fish Pathologists 8: 11–14.
• Buchmann K., 1995. Ecological implications of Echinorhynchus gadi parasitism of Balic cod (Gadus morhua). Journal of Fish Biology 46: 539–540.
• Fagerholm H.P., 1982. Parasites of fish in Finland. Acta Academia Aboensis. B 40 (6): 40–43.
• Fagerholm H.P., 1987. Gammarus oceanicus (Crustacea: Amphipoda) as an intermediate host of Hysterothylacium auctum (Nematoda: Ascaridoidea); Life-cycle and taxonomy of the parasite. Information of Institute of Parasitology Abo Akademi 19: 30.
• Koie M., 1993. Aspects of the life cycle and morphology of Hysterothylacium aduncum (Rudolphi, 1802) (Nematoda, Ascaridoidea, Anisakidae). Canadian Journal of Zoology 71:1289–1296.
• Mańkowski W., 1959. Dorsz bałtycki (jego biologia, połowy i technologia). [Baltic cod (its biology, fishing and processing technology).] Gdańskie Towarzystwo Naukowe, Gdańsk.(In Polish.)
• Markowski S., 1933. Die Eingeweidewamer der Fische des Polnischen Balticums (Trematoda, Cestoda, Nematoda, Acanthocephala). Archives d`Hydrobiologie et d`Ichthyologie 7: 1–58.
• Morozińska-Gogol J., 1995. The role of cod, Gadus morhua L. in the life-cycle of Contracaecum osculatum (Rudolphi, 1802) (Nematoda, Anisakidae)—an overview.Meddelande Fran Havsfiskelaboratoriet 327: 123–130.
• Myjak P., Szostakowska B., Wojciechowski J., Pietkiewicz H., Rokicki J., 1994. Anisakid larvae in cod from the southern Baltic Sea. Archive of Fishery and Marine Research 42 (2):149–161.
• Reimer L.W., 1995. Parasites especially of piscean hosts as indicators of the eutrophication In the Baltic Sea. Applied Parasitology 36: 124–135.
• Reimer L.W., Walter U., 1993. Zur Parasitierung von Gadus morhua in der salichen Ostsee.Applied Parasitology 34: 181–186.
• Rokicki J., 1975. Helminth fauna of fishes of the Gdańsk Bay (the Baltic Sea). Acta Parasitologica Polonica 23 (2): 37–84.
• Rutkowicz S., 1963. Wyniki badań nad stadem dorsza (Gadus callarias L.) południowowschodniego Bałtyku w latach 1946–1960. (Dynamika stada na tle biologii i ekologii gatunku). [The results of a study on a cod population (Gadus callarias L.) of the southeastern Baltic Sea within 1946–1960. (The population dynamics in relation to the biology and ecology of the species).] Studia i Materiały Morskiego Instytutu Rybackiego w Gdyni A 12: 165–211. (In Polish.)
• Studnicka M., 1965. Internal parasites of the cod, Gadus callarias L., from the Gdańsk Bay of the Baltic Sea. Acta Parasitologica Polonica 13 (28): 283–290.
• Sulgostowska T., Vojtkova L., 1992. The helminth fauna of Gammarus spp. (Amphipoda)from the south-east Baltic Sea (Poland). Acta Parasitologica 37 (4): 189–193.
• Valtonen E.T., Van Maren M.J., Timola O.,1983. A note on the intermediate hosts of Echinorhynchus gadi Zoega, in Muler (Acanthocephala) in the Baltic Sea. Aquilo Seriologica Zoologica 22: 93–97.
• Voigt M.O.C., 1991. City structure of the helminth parasite fauna of gammarids (Crustacea:Amphipoda) in Kiel Bay, western Baltic Sea. Meeresforschung 33: 266–274.
• Załachowski W., 1977. Ilościowa i ekologiczna analiza pokarmu użytkowanego przez populację dorsza w Południowym Bałtyku. [A quantitative and ecological analysis of sustenance used by the cod population in the southern Baltic]. Rozprawy, Akademia Rolnicza w Szczecinie No. 53. (In Polish.)