Browsing by Author "Schneider, Craig, W."

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    A revision of the genus Cryptonemia (Halymeniaceae, Rhodophyta) in Bermuda, western Atlantic Ocean, including five new species and C. bermudensis (Collins & M. Howe) comb. nov.
    (Taylor and Francis, 2018) Schneider, Craig, W.; Lane, Christopher, E.; Saunders, Gary, W.
    Cryptonemia specimens collected in Bermuda over the past two decades were analysed using gene sequences encoding the large subunit of the nuclear ribosomal DNA and the large subunit of RuBisCO as genetic markers to elucidate their phylogenetic positions. They were additionally subjected to morphological assessment and compared with historical collections from the islands. Six species are presently found in the flora including C. bermudensis comb. nov., based on Halymenia bermudensis, and the following five new species: C. abyssalis, C. antricola, C. atrocostalis, C. lacunicola and C. perparva. Of the eight species known in the western Atlantic flora prior to this study, none is found in Bermuda. Specimens reported in the islands in the 1900s attributed to C. crenulata and C. luxurians are representative of the new species, C. antricola and C. atrocostalis, respectively.
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    Collections from the mesophytic zone off Bermuda reveal three species of Kallymeniaceae (Gigartinales, Rhodophyta) in genera with transoceanic distributions
    (Wiley, 2018) Schneider, Craig, W.; Popolizio, Thea, R.; Saunders, Gary, W.
    A molecular survey of red algae collected by technical divers and submersibles from 90 m in the mesophotic zone off the coast of Bermuda revealed three species assignable to the Kallymeniaceae. Two of the species are representative of recently described genera centered in the western Pacific in Australia and New Zealand, Austrokallymenia and Psaromenia and the third from the Mediterranean Sea and the eastern Atlantic, Nothokallymenia. A phylogenetic analysis of concatenated mitochondrial (COI-5P) and chloroplast (rbcL) genes, as well as morphological characteristics, revealed that two are shown to be new species with distant closest relatives (N. erosa and Psaromenia septentrionalis), while the third represents a deep water western Atlantic species now moved to an Australasian genus (A. westii).
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    New species of Galene and Howella gen. nov. (Halymeniaceae, Rhodophyta) from the mesophotic zone off Bermuda
    (Taylor and Francis, 2019) Schneider, Craig, W.; Popolizio, Thea, R.; Kraft, Lesleigh, G.K.; Saunders, Gary, W.
    The mesophotic zone off the coast of Bermuda has been explored for macroalgae beginning with the R/V Seahawk cruises of the 1980s and most recently on the Nekton XL Catlin cruise of the R/V Baseline Explorer in 2016. In this paper, we present two new members of the Halymeniaceae discovered on these missions based upon a combined ML analysis of mitochondrial (COI-5P), plastid (rbcL) and nuclear genes (LSU), as well as morphological and anatomical characteristics. Howella gorgoniarum gen. et sp. nov. grows conspicuously on the base of soft corals, and represents one of the three species in the new genus. Two species of the non-monophyletic Thamnoclonium, T. latifrons Endlicher & Diesing and T. lemannianum Harvey from South Africa and Australia, are moved to Howella based upon their molecular phylogenetic placements. First collected offshore of Bermuda in 1960 and misidentified as Halymenia hancockii, Galene leptoclados sp. nov. represents the first species in its genus collected outside of the western Pacific.
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    Two new species of Solieriaceae (Rhodophyta, Gigartinales) from the euphotic and mesophotic zones off Bermuda, Meristotheca odontoloma and Tepoztequiella muriamans
    (Taylor and Francis, 2020) Schneider, Craig, W.; Peterson, Elias, S.; Saunder, Gary, W.
    Using mitochondrial COI-5P and plastid rbcL sequences, as well as morphological characteristics, two new species of Solieriaceae are added to the flora of Bermuda. Specimens collected over the past two decades representing those distributed in the early exsiccata, Phycotheca boreali-americana as Eucheuma gelidium (= Meristotheca gelidium) are shown to be a unique species of Meristotheca, M. odontoloma sp. nov. A recent collection from a depth of 60 m off the islands is shown to be the same as a single specimen found in Bermuda in 1953 at 55 m and identified at the time as Agardhiella ramosissima. These deepwater collections are described as the second species in the new genus Tepoztequiella, T. muriamans sp. nov. Based on shared morphological characteristics, other collections of M. gelidium and A. ramosissima from the western Atlantic may require molecular analysis to determine if they represent either of the two new species. Our molecular investigations also confirmed that there are two species of Meristotheca from Lord Howe Island, Australia, and Meristotheca halymenioides comb. nov., based upon Mychodea halymenioides, is removed from synonymy with M. papulosa.