A taxonomic revision of the genus Primnoisis Studer [& Wright], 1887 (Coelenterata: Octocorallia: Isididae) using morphological and molecular data / Kirrily Moore, Philip Alderslade & Karen Miller.

• Abstract -- Introduction -- Abbreviations -- Taxonomic History -- Systematic position of Primnoisis -- The establishment of the genus -- The addition of other species -- Incorrectly assigned species -- The need for a review -- Existing phylogenetic knowledge of Primnoisis -- Aims and summary -- Material and Methods -- Samples -- Morphological characters -- Morphological Methods -- Molecular Methods -- Extraction, amplification, purification and sequencing -- Outgroups and additional sequences -- Results -- Summary of taxonomic decisions -- Systematic account -- ISIDIDAE Lamouroux, 1812 -- Mopseinae Gray, 1870 -- Primnoisis Studer [& Wright], 1887 -- Primnoisis (Primnoisis) new subgenus -- Primnoisis (Primnoisis) antarctica Wright & Studer, 1889 -- Primnoisis cf. antarctica -- Primnoisis (Primnoisis) fragilis Kükenthal, 1912 -- Primnoisis (Primnoisis) chatham new species -- Primnoisis (Primnoisis) erymna new species -- Primnoisis (Delicatisis) new subgenus -- Primnoisis (Delicatisis) rigida Wright & Studer, 1889 -- Primnoisis (Delicatisis) delicatula (Hickson, 1907) -- Primnoisis (Delicatisis) formosa Gravier, 1913 -- Primnoisis (Delicatisis) gracilis (Gravier, 1913) new combination -- Primnoisis (Delicatisis) millerae new species -- Primnoisis (Delicatisis) niwa new species -- Primnoisis ambigua Wright & Studer, 1889 -- Primnoisis mimas Bayer & Stefani, 1987 -- Primnoisis tasmani new species -- Genetic relationships among morphospecies of Primnoisis -- Sequencing success and alignment -- Phylogenetic analyses as support for morphological decisions -- Clades within the three genetic groups of Primnoisis -- Genetic distances as support for morphospecies -- Character-based analysis and morphology combined for species delineation -- Within the new subgenus Primnoisis (Primnoisis) -- Within the new subgenus Primnoisis (Delicatisis) -- Discussion -- Phylogeny of Primnoisis -- Congruence of morphological and molecular results for species delineations -- Effectiveness of the chosen gene regions for species delineation -- Distribution and endemism -- Summary -- Acknowledgements -- References -- Supplementary table 1. 

• A complete taxonomic revision of the genus Primnoisis (Isididae) is presented herein, based on original type material of all nominal species and additional specimens from deep-water surveys in sub-temperate and Antarctic waters. A multi-disciplinary approach was used combining morphological characteristics such as colonial branching patterns, polyp struc­ture, sclerite form and arrangement, together with phylogenetic reconstructions using two mitochondrial gene regions (mt­MutS and igr1–cox1). The genus Primnoisis is retained with 7 of the 8 nominal species validated (P. antarctica Wright & Studer, 1889, P. rigida Wright & Studer, 1889, P. ambigua Wright & Studer, 1889, P. delicatula Hickson, 1907, P. fragilis Kükenthal, 1912, P. formosa Gravier, 1913 and P. mimas Bayer & Stefani, 1987), with the eighth (P. sparsa Wright & Studer, 1889), synonymised with P. antarctica. In addition, the species Mopsea gracilis Gravier, 1913 is reassigned to Primnoisis and an additional five new species are described (P. chatham n. sp., P. erymna n. sp., P. millerae n. sp., P. niwan. sp. and P. tasmani n. sp). Most of the species fell into two clear groups, defined both by morphology and genetic group­ing, for which two new sub-genera are proposed (P. (Primnoisis) n. subg. and P. (Delicatisis) n. subg.). Three species, P. ambigua, P. mimas and P. tasmani, could not be placed reliably in either sub-genus due to distinctive morphological features or genetic dissimilarity. It was not possible to confirm the monophyly of the genus due to unresolved relationships with the closely related genus Notisis Gravier, 1913 and an undescribed genus of Mopseinae. 

Ämnesord

Isididae  -- South Pacific Ocean -- Identification. (LCSH)

Isididae  -- South Pacific Ocean -- Classification. (LCSH)

Isididae  -- Antarctic Ocean -- Identification. (LCSH)

Isididae  -- Antarctic Ocean -- Classification. (LCSH)

Isididae  -- Indian Ocean -- Identification. (LCSH)

Isididae  -- Indian Ocean -- Classification. (LCSH)

Genre

Classification.  (fast)

Field guides.  (fast)

Klassifikation

593.6 (DDC)

Ugjia (kssb/8 (machine generated))