The previous and contemporary conceptions on phylogeny and systematic classifications of Oligochaeta (Annelida)
1984; Polish Academy of Sciences; Volume: 38; Issue: 9 Linguagem: Inglês
ISSN
1734-1833
Autores Tópico(s)Marine Biology and Ecology Research
ResumoThe author presents various phylogenetic opinions concerning the origin and evo lution of oligochaetes, especially aquatic. In the contemporary classifications of the aquatic and terrestrial oligochaetes very important significance have conceptions presented by 0. V. C e k a n o v s k a j a , R. 0 . B r i n k h u r s t , B. G. M. J a m i e s o n , T. T i m m and N. M. S h u r o v a . The author supposes that the families Aeolosomatidae and Potam odrilidae should be consider ed a separate class of A phanoneura (order Aeolosom atida) of the subtype Clitellata. Also the family Branchiobdellidae is considered a separate class of the subtype Clitellata. The family Enchytraeidae is considered a separate superorder (order E nchytraeida) of the class Oligo chaeta. The problem of the origin of the Oligochaeta and their evolution, has for a long time, been the centre of interest of all zoologists investigating this group of animals. Generally speaking, the relation between the Oligochaeta and the primitive Polychaeta has never aroused any doubst; however, various scientists expressed different views on the matter. Undoubtedly, a great difficulty in working out a convincing concept of the origin of the Oligochaeta and establish ing the line of their evolutionary development is due not only to the fact that little is known about their fossil remains but also to a tremendous gap in studies 1 The fundamental theses of this paper presented at Vth International Colloquium on Terrestrial Oligochaeta (6.-11. October, 1980, Moscow, U.S.S.R.) and “taxonomical work shop” of Ilnd International Symposium on Aquatic Oligochaete Biology (21.-24. September, 1982, Pallanza, Italy).
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