In the rainy season, Subclass Oligochaeta was the most abundant taxon, with the presence of family Tubificidae representing 76,3% of macroinvertebrate community, unlike the observed in the dry season period, when Aelosomatidae and Lumbriculidae
families were also found (Table 2).
Because these streams did not have known upstream sources of potential colonizers, as discussed above, they might have been terrestrial representatives of these groups (misinterpreted as aquatic forms, e.g., worms in the families Enchytraeidae and Lumbriculidae
), organisms in cryptobiotic states (e.g., Triops), hyporheic organisms, or transients on wildlife (leeches and snails).
In contrast, Sphearium sp., Psephanidae, Tubificidae, Corixidae, Phreodriliidae, Ancylidae, Pisidium sp., Tipuliidae, Capilariventridae, Dytiscidae Lumbriculidae
, and Leptophlebbiidae were highly associated with open bank habitats.
D 12 129 30 174 6 Haploxatida Naididae indeterminate D 0 63 0 6 9 Lumbriculida Lumbriculidae
D 0 3 0 0 0 indeterminate Tricladida Dugesia sp.
On the use of indicator communities of Tubificidae and some Lumbriculidae
in the assessment of water pollution in Swedish lakes.
The nematodes belonged to the species Nygolaimus and the annelids to a morphospecies of the family Lumbriculidae
. The most numerous species was Daphnia in its ephippium stage.
Pr - - - Allonais paraguayensis Michaelsen Re - - + Lumbriculidae
Re + - - OSTRACODA Cypricercus sp.
Only two taxa were identified at this site--the aquatic earthworm family Lumbriculidae
and midge subfamily Chironominae (Table 1).
were found only outside the limits of the active river channel and Hyalellidae were found only deep (60-100 cm) below the bed surface.
A phylogenetic analysis of the Lumbriculidae
This specific fauna is nowadays well represented in the brackish but relatively carbonate-rich Caspian Sea, inhabited, among others, also by three species of the otherwise strongly freshwater oligochaete family Lumbriculidae
(Hrabe 1950, Zinogenova 1975).