Naslov
Taxonomy and suitable markers in freshwater sponges

Autori
Pfannkuchen, Martin ; Gugel, Jochen ; Meixner, Martin ; Kupka, Thomas ; Hambsch, Nadja ; Bruemmer, Franz

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
9. Jahrestagung der Gesellschaft für Biologische Systematik (GfBS) / Aspoeck, Ulrike ; Haring, Elisabeth ; Hoerweg, Christoph ; Repp, Kriemhild ; Sattmann, Helmut. - Beč : NHM Wien, 2007, 53-53

Skup
9. Jahrestagung der Gesellschaft für Biologische Systematik (GfBS)

Mjesto i datum
Beč, Austrija, 20.02.2007. - 23.02.2007

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
spongilidae; taxonomy; freshwater sponges; marker genes

Sažetak
Freshwater sponges exclusively belong to the suborder Spongillina, which comprises 7 families (Spongillidae, Lubomirskiidae, Malwispongiidae, Metaniidae, Metschnikoviidae, Palaeospongillidae, Potamolepidae) and 45 genera. An increasing number of sampled freshwater sponges cannot be classified unambiguously due to the lack of important morphological characters given in the determination keys commonly used. Given as an example: some Ephydatia species do not build gemmules and thus lack gemmuloscleres which are important characters for their identification which also holds true for many freshwater sponges. Since the first descriptions of freshwater sponges, e.g. Linnaeus 1758, Systema Naturae or Lamarck 1816, their taxonomy and phylogeny are revealed from morphological characters like body size, external shape, consistency, colour, skeletal architecture and scleres (shapes, dimensions and distribution or situation). But depending on the employed marker and method even antithetic results are revealed. Therefore we here discuss the limits and possibilities of already employed and possible markers or better character sets. The synthesis of all possible character sets at a weighted balance produces the most reliable data in taxonomy as well as phylogeny. Such “syntaxonomic” data sets result from morphological matrices as well as DNA-sequence alignments. We compare the resulting phylogenies and evaluate possible molecular markers for taxonomic purposes. For molecular as well as for morphological characters we found some to be not useful (e.g. ITS or colour) and some to be very suitable (e.g. 28S rDNA or scleres) for taxonomic and thus phylogenetic analysis.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA