Endoparasitic worms of Harpagifer antarcticus Nybelin, 1947 off the South Shetland Islands [Antarctic]

• Autorzy: Zdzitowiecki K , Zadrozny T.
• Języki publikacji: EN

Abstrakty

EN

Fifty specimens of Harpagifer antarcticus Nybelin, 1947 caught off King George Island in Admiralty Bay (44) and off Elephant Island (6), were examined for endoparasitic worms. Fifteen or sixteen species and larval forms were found, including three species of Digenea (Macvicaria georgiana, Genolinea bowersi and Gonocerca phycidis), four forms of larval Cestoda (three tetraphyllidean cercoids and diphyllobothriid plerocercoid), five species of Acanthocephala (Aspersentis megarhynchus, Metacanthocephalus dalmori, Corynosoma arctocephali cystacanth, C. hamanni cystacanth and C. pseudohamanni cystacanth) and three or four species of Nematoda, Ascarophis nototheniae, Pseudoterranova decipiens third stage larva (L3) and Contracaecum sp. L3 = ?C. osculatum and ?C. radiatum. Only some of the specimens of the two digenean species, M. georgiana and G. bowersi, were fully mature (containing eggs). No one form is specific for Harpagifer, eight have not previously been reported from H. antarcticus. The total prevalence of infection was 68% with a maximum intensity 19 worms. The most numerous parasite in Admiralty Bay was G. bowersi (67 specimens) occurring with a prevalence of 23%; A. megarhynchus was less numerous (19 specimens), but occurred with a higher prevalence, 25%. A list of internal parasitic worms of H. antarcticus (according to present and literature data, probably 17 forms) is compared with that of Notothenia coriiceps occurring in the similar (partly the same) environment at King George Island (27 forms); this is 63% of forms recorded in H. antarcticus. All parasites of H. antarcticus occur in N. coriiceps. A list of parasitic worms recorded in three harpagiferid species is given. The role of harpagiferids as intermediate or paratenic hosts of parasitic worms appears to be more important than a role as definitive hosts.

Słowa kluczowe

EN

Admiralty Bay; fish; Antarctic; worm; infection; Elephant Island; cercoid; endoparasitic worm; Shetland Islands; Digenea; parasite; Cestoda; Genolinea bowersi; larval form; Harpagifer antarcticus; Macvicaria georgiana; Gonocerca phycidis

• Wydawca: -
• Czasopismo: Acta Parasitologica
• Rocznik: 1999
• Tom: 44
• Numer: 2
• Opis fizyczny: p.125-130

Twórcy

autor

Zdzitowiecki K

• Polish Academy of Sciences, Twarda 51-55, 00-818 Warsaw, Poland

autor

Zadrozny T.

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