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| Rota, Emilia; Martin, Patrick; Erséus, Christer. |
| To re-evaluate the various hypotheses on the systematic position of Parergodrilus heideri Reisinger, 1925 and Hrabeiella periglandulata Pizl & Chalupský, 1984, the sole truly terrestrial non-clitellate annelids known to date, their phylogenetic relationships were investigated using a data set of new 18S rDNA sequences of these and other five relevant annelid taxa, including an unknown species of Ctenodrilidae, as well as homologous sequences already available for 18 polychaetes, one aphanoneuran, 11 clitellates, two pogonophorans, one echiuran, one sipunculan, three molluscs and two arthropods. Two different alignments were constructed, according to an algorithmic method (Clustal W) and on the basis of a secondary structure model (DCSE), A maximum... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Terrestrial Polychaeta; Parergodrilus heideri; Stygocapitella subterranea; Hrabeiella periglandulata; I8S rRNA gene; Molecular phylogeny; Rapid radiation. |
| Ano: 2001 |
URL: http://www.repository.naturalis.nl/record/534378 |
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| Schlaghamerský,Jiří; ídová,Adéla. |
| The objective of this work was to evaluate the density, dynamics and vertical distribution of a Hrabeiella periglandulata population in a forest soil at Brno, Czech Republic. From December 2003 to November 2004, two plots covered by mixed stands and two covered by coniferous stands were sampled monthly. Six soil cores per plot were taken down to 15 cm and subdivided into layers, which were subjected to wet funnel extraction. Missing in one of the coniferous stands H. periglandulata was abundant in the mixed stand with the highest soil pH. In this stand, monthly sampling continued until November 2005, with three additional samplings up to January 2007. Mean annual density was 2,672±1,534 individuals m-2. Population dynamics differed from those reported from... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil biology; Soil fauna; Terrestrial Polychaeta. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800017 |
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