The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . sparent leaf-like organisms andmay often be found attached to the skin, mouth, nostrils or gillsof fish; on the skin and bladder of Amphibia; and on those of certainReptilia. Polyslomtim inlegerrimum (fig. 5) occurs commonly inthe bladder of frogs and toads; Diplozoon on the skin of theminnow. Gyrodaclyliis {hgs. 5, 6) on the gills of various fresh-waterfish; and a large number of genera occur on the skin, cloaca and gillsof Elasmobranchs and other marine fish. They ingest the mucusand, to some ex
The encyclopædia britannica; a dictionary of arts, sciences, literature and general information . sparent leaf-like organisms andmay often be found attached to the skin, mouth, nostrils or gillsof fish; on the skin and bladder of Amphibia; and on those of certainReptilia. Polyslomtim inlegerrimum (fig. 5) occurs commonly inthe bladder of frogs and toads; Diplozoon on the skin of theminnow. Gyrodaclyliis {hgs. 5, 6) on the gills of various fresh-waterfish; and a large number of genera occur on the skin, cloaca and gillsof Elasmobranchs and other marine fish. They ingest the mucusand, to some extent, the blood of their host by the aid of a suckingpharynx through which the food passes into the bifurcated ali-mentary sac and its branched caeca. The life-history of this order offers many points of interest. Theeggs are stalked and provided with chitinoid often operculate shell contains a single ovum and a mass of yolk-cells. Inmost cases the eggs are attached to the host, but in Potystomianthe eggs are laid in water. The egg of Gyrodactylus develops inthe body of the
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectencyclo, bookyear1910
