By Marianne C. Eckroth, Ralph O. Brinkhurst (auth.), Kathryn A. Coates, Trefor B. Reynoldson, Thomas B. Reynoldson (eds.)
Recent reports on assorted points of the biology of clitellate works (oligochaetes and leeches) are present in the court cases of the latest overseas Symposium on Aquatic Oligochaete Biology - from improvement to inhabitants dynamics and from ultrastructure to evolution. nearly all of the contributions, that have a truly huge geographic scope, are investigations of the biology and ecology of oligochaete works in ordinary and polluted waters.
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Extra resources for Aquatic Oligochaete Biology VI: Proceedings of the VI International Symposium on Aquatic Oligochaetes held in Stromstat, Sweden, September 5–10, 1994
Moreover, Brockmeyer (1991) did not find any variability at all within monospecific laboratory cultures of Enchytraeus species, irrespective of age, body region or nutritional state of the individuals. Schmelz (1995) could also demonstrate that interspecific differences of general protein patterns between sympatric field popUlations of Fridericia species exceed those within the respective species. The two examples presented in this paper concern sympatric populations only, and protein patterns have been used for comparatively limited questions within the framework of a field study.
3. )furcata. Needle seta. developmental stages of the same species, as is also the case with Pristina. Length of the setae. To solve the problem of setal form variability, other characteristics must be considered. Following his research into the measurements and reciprocal ratios of the three types of setae (ventral - anterior and posterior; needle setae; hair setae), Grimm (1986, 1987) suggested using the length of the posterior ventral setae. To compare the measurements and ratios of African N aididae with those of the Italian population, we used only species found in significant numbers (~IO) to determine mean lengths (Table 2).
Via Anfiteatro 9, 37121 Verona, Italy Key words: Oligochaeta, Naididae, taxonomy, distribution, Italy Abstract We present a list of Italian freshwater and marine Oligochaeta in the families Lumbriculidae, Haplotaxidae, Tubificidae, Naididae, Propappidae, Criodrilidae, and Lumbricidae, representing 57 genera and 130 species. Published data reflect the incomplete knowledge of the Italian oligochaete fauna, restricted to certain geographical areas. Subterranean aquatic and marine fauna are of particular interest as these have been studied the least.