Alexander Plotkin
University of Bergen
5 Papers
26 Citations
Alexander Plotkin is an academic researcher from University of Bergen. The author has contributed to research in topics: Monophyly & Polymastia. The author has an hindex of 4, co-authored 5 publications.
Chat about Author
Papers
Polymastiidae (Porifera: Demospongiae) of the Nordic and Siberian Seas
TL;DR: Polymastiidae (Porifera: Demospongiae) of the Nordic and Siberian Seas are revised and compared with the related species of the North Atlantic based on the morphological data from the type and comparative material and the molecular data from fresh samples.
Phylogenetic reconstruction of Polymastiidae (Demospongiae: Hadromerida) based on morphology
TL;DR: Three possible evolutionary scenarios based on three alternative interpretations of the body plan of Quasillinabrevis and Ridleiaoviformis were analysed, and the exclusion of Pseudotrachya from Polymastiidae was proposed.
Molecular phylogenies challenge the classification of Polymastiidae (Porifera, Demospongiae) based on morphology
TL;DR: A phylogenetic reconstruction of Polymastiidae based on novel data on two molecular markers, cytochrome oxidase subunit I and large subunit ribosomal DNA, obtained from a broad set of species suggests a high level of homoplasy of morphological characters, which is not an appropriate base for the natural classification of Poly Mastiidae.
15
Polymastiidae (Demospongiae: Hadromerida) with ornamented exotyles: a review of morphological affinities and description of a new genus and three new species
TL;DR: The present study provides a background for future integrative phylogenetic analyses based on comprehensive molecular and morphological datasets which should reveal the natural relationships between the polymastiid taxa.
Carnivorous sponges (Cladorhizidae) of the deep Weddell Sea, with descriptions of two new species
TL;DR: 29 sponges of the family Cladorhizidae Dendy, 1922 sampled at 18 different stations in the Weddell Sea, Antarctic during two expeditions of RV Polarstern, PS61 ANT-XIX/2 ANDEEP 2 in 2002 and PS67 AnT-XXII/3 ANDEEP 3 in 2005 are presented.
6