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By Ulrich Ehlers (auth.), Seth Tyler (eds.)

ISBN-10: 940108632X

ISBN-13: 9789401086325

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Read Online or Download Advances in the Biology of Turbellarians and Related Platyhelminthes: Proceedings of the Fourth International Symposium on the Turbellaria held at Fredericton, New Brunswick, Canada, August 5–10, 1984 PDF

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Extra resources for Advances in the Biology of Turbellarians and Related Platyhelminthes: Proceedings of the Fourth International Symposium on the Turbellaria held at Fredericton, New Brunswick, Canada, August 5–10, 1984

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Ultrastructural evidence for the systematic position of the Nemertodermatida (Turbellaria). Acta zool. fenn. 54: 193-207. , 1948. Studien iiber Skandinavische Turbellaria Acoela V. Ark. Zool. 41A: 1- 82. Wiley, E. , 1981. Phylogenetics. The theory and practice of phylogenetic systematics. Wiley Interscience, New York, 439 pp. Wilson, R. , L. A. Webster, 1974. Proto nephridia. BioI. Rev. 49: 127 -160. The major parasitic platyhelminth classes - progressive or regressive evolution? G. Malmberg Zoologiska Institutionen, University of Stockholm, S-106 91 Stockholm, Sweden Keywords: parasitic, Platyhelminthes, evolution, evolutionary capacity level Abstract The evolution of certain ontogenetic processes appears to be of special importance to subsequent evolution of a phyletic line, and their occurrence suggests there are various 'evolutionary capacity levels' occupied by major taxa.

5+5 (Fig. 7). In the monogeneans, the original number is also most likely 5 + 5 (Malmberg, 1982). This number correlates with that of the most simple type of protonephridial system found in hatching monogenean larvae (Fig. 3). l h:mo~ I:IOST EPI'XHELIUJ! :RIOB BODY PAliTS (~H~ CEBCClltll) """ part and the cercomer, and changes, to different degrees, in the larval protonephridial systems - indicate a progressive evolution quite different from progressive evolutionary tends among non-parasitic platyhelminths.

Kotikova, E. , 1979. Osobennosti evolyutsii nervnogo apparata tsestod. Tr. Zoo!. Inst. Akad. Nauk USSR 84: 34-38. (On 33 peculiarities of the evolution of the nerve apparatus in Cestodes. ) Kotikova, E. , 1985. Comparative characterization of the nervous system of the Turbellaria. This volume. Mamkaev, Yu. , 1966. Morfologicheskoye mnogoobraziye kak pokazatyel primitivnosti gruppy. In E. A. ), Nauchnaya konferentsiya, posvyashchennaya 100-letiyu so dnya rozhdeniya akademika A. N. , Tezisy dokladov.

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