Morphological study of the genus Cocconeis Ehrenberg (Bacillariophyceae) collected during the 1897–1899 Belgian Antarctic Expedition
Abstract
Henri Van Heurck examined a sample collection of sea ice and underlying sea floor sediment material during the Belgian Antarctic Expedition (1897–1899). He described eight new taxa of the monoraphid diatom genus Cocconeis from this collection including: C. antiqua var. tenuistriata, C. gautierii var. gautierii and var. inornata, C. heydrichii, C. japonica var. antarctica, C. litigiosa, C. schuettii var. schuettii and var. minor. All these Cocconeis taxa share well-silicified sternum valves with wide, apical hyaline areas, more or less lenticular in shape, and narrow hyaline bands at mid-distance between the apical axis and the margin, while the more delicate raphe-sternum valves bear uniseriate striae, a hemistauros associated with the central raphe area, and crescent-shaped terminal hyaline areas. Since their original description in the early 20th century, these Cocconeis taxa have been rarely reported. I studied newly described Cocconeis taxa from Van Heurck's type material by light microscopy. The main valve features of C. gautierii var. gautierii and var. inornata, C. litigiosa, and C. schuettii var. schuettii and var. minor agree well with those of Cocconeis antiqua; I propose these five taxa be reduced to synonymy of C. antiqua.
©2011 by Walter de Gruyter Berlin New York
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Articles in the same Issue
- Research Articles
- Succession patterns in algal turf vegetation on a Caribbean coral reef
- Carpospore and tetraspore release and survival in Chondracanthus squarrulosus (Rhodophyta: Gigartinaceae) from the Gulf of California
- Morphology and taxonomy of Anadyomene species (Cladophorales, Chlorophyta) from Bahia, Brazil
- Sargassum polyceratium (Phaeophyceae, Fucaceae) surface molecule activity towards fouling organisms and embryonic development of benthic species
- Colpomenia claytonii sp. nov. (Scytosiphonaceae, Phaeophyceae) based on morphology and mitochondrial cox3 sequences
- A survey of the benthic aquatic flora in transitional water systems of Greece and Cyprus (Mediterranean Sea)
- Morphological study of the genus Cocconeis Ehrenberg (Bacillariophyceae) collected during the 1897–1899 Belgian Antarctic Expedition
- Cloning differentially expressed salt induced cDNAs from Dunaliella salina under super saturated salt stress using subtractive hybridization
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