By Marianne C. Eckroth, Ralph O. Brinkhurst (auth.), Kathryn A. Coates, Trefor B. Reynoldson, Thomas B. Reynoldson (eds.)
Recent experiences on various points of the biology of clitellate works (oligochaetes and leeches) are present in the lawsuits of the newest foreign Symposium on Aquatic Oligochaete Biology - from improvement to inhabitants dynamics and from ultrastructure to evolution. nearly all of the contributions, that have a really extensive geographic scope, are investigations of the biology and ecology of oligochaete works in typical and polluted waters.
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Additional info for Aquatic Oligochaete Biology VI: Proceedings of the VI International Symposium on Aquatic Oligochaetes held in Stromstat, Sweden, September 5–10, 1994
1990. Notas taxon6micos yeco16gicas sobre algunos oligoquetos dulcealcuicolas del nordeste Argentino. I. Naididae. Stud. Neotrop. Faun. Envir. 25: 223-233. Hydrobiologia 334: 31-36, 1996. K. A. Coates, Trefor B. Reynoldson & Thomas B. Reynoldson (eds), Aquatic Oligochaete Biology VI. © 1996 Kluwer Academic Publishers. 31 Species separation and identification in the Enchytraeidae (Oligo chaeta, Annelida): combining morphology with general protein data Rudiger M. Schmelz University of Osnabrock, FB 5, AG SpezieUe Zoologie D-49069 Osnabrock, Germany Key words: Enchytraeidae, Oligochaeta, taxonomy, general protein, morphology Abstract In the Enchytraeidae, species separation and identification is often problematic due to high morphological similarity of closely related species and considerable intraspecific variability of crucial characteristics.
This kind of sympatric distribution also raises questions about the evolutionary relationships of the co-occurring species - are they sister species or 28 distant relatives - and speciation modes. Co-occurring congeners include: Pristinella longidentata, Pristinella sp. 1 and Pristinella sp. 2; P. jenkinae and P. notopara; Pristina americana, Pristina sp. 1, P. aequiseta, P. biserrata, P. synclites, P. macrochaeta; and Dero indicus, Dero sp. 1, D. digitata and D. lodeni. These records also indicate that very careful taxonomic studies, including morphometry, are needed to show that the species indeed can be and are consistently distinguished.
Brinkhurst, R. O. & M. Marchese, 1989. Guide to the freshwater aquatic Oligochaeta of South and Central America. Coleccion CLIMAX 6. Asociacion Ciencias Natura1es del Litoral. Santo Tome, Argentina, 179 pp. Coates, K. , 1990. Redescriptions of Aspidodrilus and Pelmatodrilus, enchytraeids (Annelida, Oligochaeta) ectocommensal on earthwonns. Can. J. Zool. 68: 498-505. Coates, K. A. & D. F. Stacey, 1994. Oligochaetes (Naididae, Tubificidae, Enchytraeidae and Alluroididae) of Guyana, Peru and Ecuador.
Aquatic Oligochaete Biology VI: Proceedings of the VI International Symposium on Aquatic Oligochaetes held in Stromstat, Sweden, September 5–10, 1994 by Marianne C. Eckroth, Ralph O. Brinkhurst (auth.), Kathryn A. Coates, Trefor B. Reynoldson, Thomas B. Reynoldson (eds.)