. The biology of marine animals. Marine animals; Physiology, Comparative. Fig. Life-cycle of the Fluke Parorchis acanthus (a) Adult fluke from herring gull; (b) miracidium; (c) first-generation redia; (>f) second- generation redia from the dogwhelk Nucella; (e) echinostome cercaria, which penetrates a mussel or cockle; (/) cyst from one of the latter bivalves, ((a) After Rees (1939); (b), (c) and (d) after Rees (1940); (<?) and (/) after Lebour and Elmhirst (1922), and Dawes (19).) Mesozoa. These organisms comprise the dicyemids and orthonectids, both of which are simple internal p
. The biology of marine animals. Marine animals; Physiology, Comparative. Fig. Life-cycle of the Fluke Parorchis acanthus (a) Adult fluke from herring gull; (b) miracidium; (c) first-generation redia; (>f) second- generation redia from the dogwhelk Nucella; (e) echinostome cercaria, which penetrates a mussel or cockle; (/) cyst from one of the latter bivalves, ((a) After Rees (1939); (b), (c) and (d) after Rees (1940); (<?) and (/) after Lebour and Elmhirst (1922), and Dawes (19).) Mesozoa. These organisms comprise the dicyemids and orthonectids, both of which are simple internal parasites of invertebrates. Their compli- cated life-cycles involve an alternation of sexual and asexual generations, and the production of agametes. Dicyemids are parasites found in the kidneys of cephalopods. They infect a cephalopod shortly after it hatches from the egg, and in the young. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers
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Keywords: ., bookcentury1900, booksubjectmarineanimals, booksubjectphysiology
