Acanthopsolus lageniformis, N. Sp., a trematode in the catfish / by Marie V. Lebour.

  • Lebour, Marie Victoria, 1876-1971.
Date:
[1909?]
Catalogue details

Licence: In copyright

Credit: Acanthopsolus lageniformis, N. Sp., a trematode in the catfish / by Marie V. Lebour. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

    3/12 (page 29)
    ACANTHOPSOLUS LAGENIFORMIS, N. Sp., A TKEMATODE IN THE CATFISH. By MAKIE V. LEBOUE, M.Sc., Assistant Lecturer and Demonstrator in Zooeogy, Leeds University. The following work was done entirely at the Dove Marine Laboratory, Cullercoats, from material brought in by the fishing boats. Distomum, sp., Lebour, “ Fish Trematodes of the Northumber- land Coast,” Northumberland Sea Fisheries Eeport for 1907, p. 31, Plate III., figs. 6—8. A brief and incomplete description of this Trematode was given by myself in the above-mentioned paper. Nicoll (1) is of the opinion that it is closely allied to Acaiithopsolus Odhner (2) and the differences are so slight that it seems hardly justifiable to found a new genus for it. The worm occurs frequently, and in great numbers in the upper part of the intestine of the Catfish Anarrhichas lupus. It is by no means always present, but occurs in about 40 per cent, of the local Catfish in Spring, Summer, and early Autumn, i.e., from April till October, being rarer in Spring than in Summer, and disappearing in the Winter altogether, repeated search for it in the Winter months being unsuccessful. Two Catfish from Shetland brought in by the North Shields boats (April, 1909] both also contained the worm. The usual habitat is the creamy, opaque, and very thick intestinal slime just beyond the stomach. The worm gets entangled in this, and it is very difficult to get it completely away from the slime which must act as an effective obstacle to its being- swept away with the intestinal contents of its host, the suckers being apparently too weak to make any hold on the walls of the intestine. The stomach is sometimes also infected as well as the mouth and pharynx, but usually the younger stages occur in these latter regions, and the anterior portion of the intestines seems to be the true habitat. There may be hundreds present in one fish, and there is always a great number if the worm occurs at all.