News

Recent Publications in OPK

Interesting papers:

  • 24/12/2016  New paper: “Actualización del catálogo de los moluscos opistobranquios (Gastropoda: Heterobranchia) de las costas catalanas” published by Manuel Ballesteros, Enric Madrenas and Miquel Pontes in the journal Spira 6 (2016): 1-28, published by the Associació Catalana de Malacologia.
Abstract: An extension of the checklist of opisthobranch species (Gastropoda: Heterobranchia) known from the Catalan Coasts is presented, based on numerous unpublished findings by the authors and reports confirmed with pictures posted in several Internet platforms. A total of 53 species are added to the previous catalog: 4 Cephalaspidea, 9 Runcinacea, 3 Anaspidea, 8 Sacoglossa and 29 Nudibranchia (11 Doridacea, 10 Aeolidacea, 2 Dendronotacea and 6 Cladobranchia incertae sedis). Data for the different reports of each of these species are provided, along with some biological, distribution or taxonomical remarks of interest. Finally, an updated and taxonomically sorted list of all opisthobranch species known for Catalonia is provided, including a total of 257 species, of which 9 are basal Heterobranchia, 35 Cephalaspidea, 13 Runcinacea, 10 Anaspidea, 22 Sacoglossa, 8 Pleurobranchomorpha, 2 Umbraculida, 3 Gymnosomata, 11 Thecosomata and 144 Nudibranchia (66 Doridacea, 51 Aeolidida, 12 Dendronotida, 12 Cladobranchia incertae sedis and 3 Euarminida). With all the new data reported in this paper, and regarding opisthobranch mollusks, the Catalan Coast becomes the biologically most diverse geographical region in the Iberian Peninsula.
  • 15/12/2016 New paper: “A Radical Solution: The Phylogeny of the Nudibranch Family Fionidae” published by Kristen Cella, Leila Carmona, Irina Ekimova, Anton Chichvarkhin, Dimitry Schepetov and Terrence M. Gosliner in the journal PLoS ONE 11(12): e0167800.
Abstract: Tergipedidae represents a diverse and successful group of aeolid nudibranchs, with approximately 200 species distributed throughout most marine ecosystems and spanning all biogeographical regions of the oceans. However, the systematics of this family remains poorly understood since no modern phylogenetic study has been undertaken to support any of the proposed classifications. The present study is the first molecular phylogeny of Tergipedidae based on partial sequences of two mitochondrial (COI and 16S) genes and one nuclear gene (H3). Maximum likelihood, maximum parsimony and Bayesian analysis were conducted in order to elucidate the systematics of this family. Our results do not recover the traditional Tergipedidae as monophyletic, since it belongs to a larger clade that includes the families Eubranchidae, Fionidae and Calmidae. This newly recovered clade is here referred to as Fionidae, the oldest name for this taxon. In addition, the present molecular phylogeny does not recover the traditional systematic relationships at a generic level, and therefore, systematic changes are required. We recognize the following clades within Fionidae: Calma, Cuthona, Cuthonella, Eubranchus, Fiona, Murmania, Tenellia, Tergipes, Tergiposacca gen. nov., Rubramoena gen. nov. and Abronica gen. nov. The type species of Tergiposacca, T. longicerata nov. sp. is described. The other two new genera have a previously described species as their type species. Most of these taxa, with the exceptions of Eubranchus, Tergipes and Fiona are composed of radically different constituent species from their traditional membership, but appear to be supported by morphological synapomorphies as well as molecular data. Aenigmastyletus, Catriona, Phestilla, Tenellia and Trinchesia are nested within other clades and, thus are here considered as synonyms of the larger clades. The phylogenetic position and validity of Myja, Guyvalvoria, Leostyletus and Subcuthona still need to be tested in future studies when material becomes available.

 

Other news

  • 17/11/2017  Changed the site theme to a responsive one, compatible with mobile devices.
  • 5/05/2016 Added links to all species to the Visual ID records at Skaphandrus
  • 28/04/2016 Added links and references to species from Netherlands and Denmark
  • 2/04/2016 Added relative abundance charts for every species.
  • 6/03/2016 Added links to the NCBI GenBank database for every species.
  • 3/03/2016 Image stretching problem in some web browsers (Chrome on iPad and others) solved.
  • 1/03/2016 Published 75000 new geolocalised opisthobranch references in our maps, from the  www.gbif.org network.