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1

Digenea of fishes of the Weddell Sea. VI. The superfamily Hemiuroidea

100%
Zdzitowiecki K.
Acta Parasitologica
|
1997
|
tom 42
|
nr 4
In total, 404 fishes of 34 species were examined and 678 digenean specimens found. Apart from data on Macrourus whitsoni previously published, 40 specimens of teleost fishes belonging to 14 species and six families were infected with Hemiuroidea; 91 specimens belonging to seven species and four families were collected. Metacercariae of Otodistomum cestoides (Beneden, 1871) (family Azygiidae) occurred in cysts on the mesentery. The remaining species, Genolinea bowersi (Leiper et Atkinson, 1914) and Aphanurus sp. (Bunocotylidae); Derogenes johnstoni Prudhoe et Bray, 1973 and Gonocerca phycidis Manter, 1925 (Derogenidae); Elytrophalloides oatesi (Leiper et Atkinson, 1914) and Glomericirrus macrouri (Gaevskaya, 1975) (Hemiuridae), occurred as adults in the alimentary tract. A single specimen of Aphanurus sp. probably belongs to a new species, but is a little distorted and lacks eggs. The other species were found in 17 new hosts. O. cestoides, G. bowersi and D. johnstoni were found in the Weddell Sea for the first time. G. macrouri occurred mainly in fishes living in deep waters (below 300 m), whereas E. oatesi (rare in the investigated area) mainly in shallower waters.
2
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Occurrence od cestodes in fishes from the Weddell Sea

100%
Rocka A.
Wiadomości Parazytologiczne
|
1998
|
tom 44
|
nr 3
3

Digenea of fishes of the Weddell Sea. I. Parasites of Macrourus whitsoni [Gadiformes, Macrouridae]

88%
Zdzitowiecki K., Cielecka D.
Acta Parasitologica
|
1997
|
tom 42
|
nr 1
In total, 23 fishes caught at depth 625-1540 m were examined and 21 found to be infected with digeneans belonging to 6 species, 4 lepocreadiids in the intestine and 2 hemiuroids in the stomach. Three lepocreadiid species are described as new: Lepidapedon brayi sp. n., L. ninae sp. n. and Paralepidapedon awii sp. n. Some morphological data for other species are given. Postlepidapedon opisthobifurcatus (Zdzitowiecki, 1990) and Glomericirrus macrouri (Gaevskaya, 1975) are reported from the high Antarctic for the first time and in new hosts. Gonocerca phycidis Manter, 1925 is found in a new host. The total number of digenean species recorded in M. whitsoni increased from 2 to 8.
4

Cestodes in fishes of the Weddell Sea

88%
Rocka A., Zdzitowiecki K.
Acta Parasitologica
|
1998
|
tom 43
|
nr 2
In total, 404 fishes of 34 species caught in the Weddell Sea were examined, including four specimens of skates, Bathyraja maccaini and Bathyraja sp., and 23 specimens of the gadiform fish, Macrounis whitsoni (the only three species infected with adult Cestoda). Skates were infected with four representatives of the order Tetraphyllidea, Marsupiobothrium awii sp. n., Anthocephalum siedlecka (syn. Phyllobothrium siedleckii), Anthocephalum arctowskii (syn. Phyllobothrium arctowskii), Oncobothrium antarcticum. The three last species were first described in the South Shetland Islands area. Phyllobothrium siedleckii from B. maccaini (new host) and P. arctowskii from Bathyraja sp. are transferred to the genus Anthocephalum and their descriptions are emended. Marsupiobothrium awii sp. n. from B. maccaini is characterised by: apolytic strobila; scolex with four sessile, jar-like bothridia, each with opening provided with a ring of muscles and submarginal sucker; 120-150 testes; vagina with dilatation in proximal part and sphincter present distally; eggs 0.016 x 0.017 mm. Differential diagnosis with remaining species of the Marsupiobothrium is given. Oncobothrium antarcticum was found in B. maccaini (new host). M. whitsoni was infected with one pseudophyllidean species, Parabothriocephalus johnstoni, previously known as only from the same host in the Indian sector of the Antarctic Ocean.
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