Fróðskaparrit - 01.01.2001, Qupperneq 22

Fróðskaparrit - 01.01.2001, Qupperneq 22
26 THE BANGIOPHYTE SPECIES OF THE FAROE ISLANDS the conspicuous blade phase and the incon- spicuous microscopic shell boring concho- celis phase. The conchocelis was originally described as a separate species, Conchoce- lis rosea Batters (Batters, 1892). In sexual reproduction, male gametangia and female gametes develop either on the same blade or on separate blades. After fertilisation, zygotosporangia release zygotospores that germinate into the diploid filamentous con- chocelis phase. This phase develops con- chosporangial branches with sporangia from which conchospores are released. These develop into the haploid blade phase. Asexual reproduction has also been report- ed and different species have the capacity to develop a variety of different spore types (for terminology see Nelson etai, 1999). It has also been proposed that some spores from the blade phase can produce haploid conchocelis filaments (Kornmann, 1994) and there is some evidence of this from chromosome counts in Porphyra dioica (Holmes, pers. comm.). Recently, the use of molecular techniques has made it possi- ble to obtain a much better understanding of the taxonomy of Porphyra at the species level (e.g. Brodie etal., 1996; 1998). Mole- cular data also indicate that Bangia atrop- urpurea from Denmark and the British Isles are closely related to Porphyra (Bro- die et al., 1998; see also Miiller et ai, 1998). This paper presents a list of bangiophyte species known for the Faroe Islands, sup- plemented with annotations to characterise the species and help with identification. For more detailed descriptions of most species see Brodie and Irvine (2002). Material and methods Algae were collected selectively by hand at 265 stations from the littoral to 25 m depth. Sublittoral collections were by Scuba div- ing. Collections were made at all seasons, but less in the winter months. The localities visited were on most of the larger islands and included places at the open coasts with different exposure to waves and more or less sheltered places in the fjords. Informa- tion about the localities with details of col- lection dates, depth and geographical coor- dinates for each station are available in Sørensen et ai (2001), while a map show- ing the locations of the stations is available in Nielsen and Gunnarsson (2001). The material was examined fresh when possi- ble, and for some collections after preser- vation in 2% formalin and stored in a deep freezer for one to several months. Speci- mens in shells and other calcified material were decalcified over night in a 5% acetic acid/water solution. Permanent slide prepa- rations were mounted in KARO® (corn syrup). Voucher specimens are kept in the Botanical Museum, Copenhagen (C) with duplicate collections in the Faroese Muse- um of Natural History, Tórshavn and the Marine Research Institute, Reykjavik, Ice- land. Molecular analyses were applied to confirm some of the identifications. The procedure was the same as used by Brodie et al. (1996; 1998). Names not in current use but applied by Simmons (1897), Børge- sen (1902) and Irvine (1982) are given. Au- thor names are abbreviated according to Brummit and Powell (1992).
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