THE MORPHOLOGY AND LIFE-HISTORY OF NOTOCOTYLUS ATLANTICUS N. SP., A DIGENETIC TREMATODE OF EIDER DUCKS, SOMATERIA MOLLISSIMA, AND THE DESIGNATION NOTOCOTYLUS DUBOISI NOM. NOV., FOR NOTOCOTYLUS IMBRICATUS (LOOSS, 1893) SZIDAT, 1935

1 December 1966

journal article
research article
Published by University of Chicago Press in The Biological Bulletin

Vol. 131 (3) , 501-515
https://doi.org/10.2307/1539989

Abstract

In a footnote, but without description of figure, Looss (1893) named a cercaria from Bithynia tentaculata taken near Halle, Germany, as Cercaria imbricate. Subsequently, Looss (1896) described another cercaria, from Melania tuberculata in Egypt, as Cercaria imbricata. The German cercaria was assigned to the genus, Notocotylus, as N. imbricatus by Szidat (1895). But the specific name, imbricata, is valid only for the African form and the German species has no legitimate name. For it the name, Cercaria duboisi, is proposed. The prosobranch snail, Hydrobia salsa, taken near Woods Hole, Massachusetts, harbors 5 species of notocotylid cercariae. Two of these species belong to the Yenchingensis Group of Rothschild (1938) and develop in the intestinal caeca of eider and domestic ducklings to adults identified as Notocotylus minutus Stunkard, 1960 and Notocotylus atlanticus sp. nov. Stages in the life-cycles are described and figured.

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