The productivity of Nais spp. from periphyton of fishponds of the Dombes area (Ain) was studied in semi-natural conditions by cultivation of zooids in experimental glass enclosures immersed in situ and filled with pond water receiving injections of fertilizers (P2O5) and natural filtered periphyton extracts (particles < 70 µm).

2024年3月5日 · Here, variation in the barcoding marker COI of three genera of freshwater clitellates, Dero, Nais, and Pristina (Clitellata: Naididae) was studied, using publicly available sequences together with newly generated ones, with the …

1993年5月1日 · A dynamic energy-budget model (DEB model) was extended to describe the growth of Nais elinguis, a common oligochaete species frequently occurring in sewage treatment plants. Nais elinguis reproduces asexually by dividing into an anterior and a posterior naidid.

1979年1月1日 · A survey of sewage filter-beds situated throughout Great Britain showed that naidid worms were frequently an important component of the faunal community. The three commonest species were Nais variabilis, N. elinguis, and Pristina idrensis. Their occurrence and abundance were determined principally by the organic loading received by the beds ...

The annual production of the Naididae Chaetogaster diastrophus, Nais spp., and Stylaria lacustris inhabiting the aufwuchs on reed stems in eutrophic Lake Belau (northern Germany) was estimated. For this purpose, field biomass data taken at biweekly intervals were combined with data on growth potentials of Naididae.

2024年1月1日 · 近日，研究人员在《Biologia》杂志上发表了一篇题为“DNA barcoding and genetic distances in three genera of Naididae (Annelida: Clitellata)”的论文，研究了三个淡水Clitellata亚纲Naididae科的属（Dero，Nais和Pristina）的分子标记COI的变异情况，以测试全球条形码差距的存 …

2006年8月1日 · Naidinae (former Naididae) is a group of small aquatic clitellate annelids, common worldwide. In this study, we evaluated the phylogenetic status of Naidinae, and examined the phylogenetic relationships within the group. Sequence data from two mitochondrial genes (12S rDNA and 16S rDNA), and one nuclear gene (18S rDNA), were used.

The annual production of the Naididae Chaetogaster diastrophus, Nais spp., and Stylaria lacustris inhabiting the aufwuchs on reed stems in eutrophic Lake Belau (northern Germany) was estimated. For this purpose, field biomass data taken at biweekly intervals were combined with data on growth potentials of Naididae.

The biomass of asexual Naididae (Nais spp.) shows a significant positive correlation with the organic carbon weigth (T.O.C.) of nutritive substrates subject to various conditioning (périphyton growing naturally on hydrophytes, périphy ton extracts cultivated in glass enclosures immersed in situ, biotecton growing in situ on artificial substrates).

2000年1月1日 · Four Halosarpheia spp., Lignincola laevis and Nais inornata were examined to determine the placement of these genera within the unitunicate ascomycetes. Two equally most parsimonious cladograms resulted from the analysis of the data.