@article{764e02ca6fda4d6095d2060f29b0aea7,
title = "Loricate choanoflagellates (Acanthoecida) from warm water seas. VI. Pleurasiga Schiller and Parvicorbicula Deflandre",
abstract = "The loricate choanoflagellate genera Pleurasiga and Parvicorbicula are taxonomically ambiguous. Pleurasiga because of the uncertainty that relates to the true identity of the type species, and Parvicorbicula because too many newly described species over time have been dumped here in lack of better options. While all species currently allocated to the genus Pleurasiga (with the exception of the type species) are observed in our samples from the global warm water belt, the genus Parvicorbicula is represented by just a few and mostly infrequently recorded taxa. Two new species, viz. Pl. quadrangiella sp. nov. and Pl. minutissima sp. nov., are described here. While the former is closely related to Pl. echinocostata, the latter is reminiscent of Pl. minima. Core species of Pleurasiga and Parvicorbicula deviate from the vast majority of loricate choanoflagellates in having both the anterior and the mid-lorica transverse costae located exterior to the longitudinal costae. In Pl. quadrangiella there is no mid-lorica transverse costa but rather a small posterior transverse costa located inside the longitudinal costae. In Pl. minutissima the mid-lorica transverse costa has extensive costal strip overlaps which reveal patterns of costal strip junctions that deviate from the norm.",
keywords = "Acanthoecida, Loricate choanoflagellates, Parvicorbicula, Pleurasiga, Warm water seas",
author = "Thomsen, {Helge Abildhauge} and Kamennaya, {Nina A.} and Zubkov, {Mikhail V.} and {\O}stergaard, {Jette Buch}",
note = "Funding Information: Crew and scientists on board the research vessels ({\textquoteleft}Dana{\textquoteright}, {\textquoteleft}Vaedderen{\textquoteright}, {\textquoteleft}Chakratong Tongyia{\textquoteright}, {\textquoteleft}Malcolm Baldrige{\textquoteright}, {\textquoteleft}Sonne{\textquoteright}, {\textquoteleft}Discovery{\textquoteright}) are acknowledged for good collaborative spirit and for providing excellent facilities for collecting and processing our samples. Dr. Gunni {\AE}rtebjerg and Steffen Mariager Pedersen are acknowledged for providing the samples from outside the Alexandria Harbour. We are grateful to Dr. Sergio Sanudo-Wilhelmy and Kurt Buck for organizing the trip to Gulf of California. Carol Kosman is warmly acknowledged for her meticulous contribution to this paper. Thanks are due to Dr. {\O}. Moestrup (Univ. of Copenhagen) for letting us use his New Zealand specimen of Pl. minutissima. We thank Drs. Tomasz Goral and Alex Ball from the Natural History Museum, London for support with the electron microscopy imaging. Thanks are due to an anonymous reviewer for providing valuable comments on major parts of the manuscript. Main funding sources, i.e. the Independent Research Fund Denmark, the Carlsberg Foundation, Danida (Denmark's Development Cooperation), the H{\o}jgaard Foundation, and the Danish Centre for Marine Research are acknowledged for their generous contributions to our research. The present work was carried out as part of the Galathea3 expedition under the auspices of the Danish Expedition Foundation (Galathea3 contribution no. P130), as part of the Sargasso-Eel 2014 Expedition, as part of the UltraPac Expedition on board Research Vessel Sonne (SO-245), and as part of the Transatlantic cruise on board the Royal Research Ship Discovery (DY084). The research on the cruises SO-245 and DY084 was supported by the UK Natural Environment Research Council through research grant NE/M014363/1. Funding Information: Crew and scientists on board the research vessels ({\textquoteleft}Dana{\textquoteright}, {\textquoteleft}Vaedderen{\textquoteright}, {\textquoteleft}Chakratong Tongyia{\textquoteright}, {\textquoteleft}Malcolm Baldrige{\textquoteright}, {\textquoteleft}Sonne{\textquoteright}, {\textquoteleft}Discovery{\textquoteright}) are acknowledged for good collaborative spirit and for providing excellent facilities for collecting and processing our samples. Dr. Gunni {\AE}rtebjerg and Steffen Mariager Pedersen are acknowledged for providing the samples from outside the Alexandria Harbour. We are grateful to Dr. Sergio Sanudo-Wilhelmy and Kurt Buck for organizing the trip to Gulf of California. Carol Kosman is warmly acknowledged for her meticulous contribution to this paper. Thanks are due to Dr. {\O}. Moestrup (Univ. of Copenhagen) for letting us use his New Zealand specimen of Pl. minutissima. We thank Drs. Tomasz Goral and Alex Ball from the Natural History Museum, London for support with the electron microscopy imaging. Thanks are due to an anonymous reviewer for providing valuable comments on major parts of the manuscript. Main funding sources, i.e. the Independent Research Fund Denmark , the Carlsberg Foundation, Danida (Denmark's Development Cooperation) , the H{\o}jgaard Foundation , and the Danish Centre for Marine Research are acknowledged for their generous contributions to our research. The present work was carried out as part of the Galathea3 expedition under the auspices of the Danish Expedition Foundation (Galathea3 contribution no. P130), as part of the Sargasso-Eel 2014 Expedition, as part of the UltraPac Expedition on board Research Vessel Sonne (SO-245), and as part of the Transatlantic cruise on board the Royal Research Ship Discovery (DY084). The research on the cruises SO-245 and DY084 was supported by the UK Natural Environment Research Council through research grant NE/M014363/1 . Publisher Copyright: {\textcopyright} 2020 Elsevier GmbH",
year = "2020",
month = aug,
day = "1",
doi = "10.1016/j.ejop.2020.125717",
language = "English",
volume = "75",
journal = "European Journal of Protistology",
issn = "0932-4739",
publisher = "Urban und Fischer Verlag GmbH und Co. KG",
}