A new marine araphid diatom, Thalassionema kuroshioensis sp nov., from temperate Japanese coastal waters

作者：Sugie Koji^*; Suzuki Koji

来源：Diatom Research, 2015, 30(3): 237-245.

DOI：10.1080/0269249X.2015.1055339

• Thalassionema
• Thalassionema kuroshioensis sp
• nov
• plankton
• cell size
• araphid diatom
• coastal species

A new marine planktonic diatom Thalassionema kuroshioensis sp. nov., was described based on morphological comparison with five other extant Thalassionema species. Thalassionema kuroshioensis was found in coastal to offshore regions of the Kuroshio current in the temperate to subtropical western North Pacific. Morphological characteristics of T. kuroshioensis were identified using light and scanning electron microscopic observations and include isopolar valves, high density of areolae, cross- to club-shaped occluding bars, apical excavations, and sternum traversed across both ends of apices on the valve face. One rimoportula is located at the end of both valve apices connecting with the external opening slit in the deeply excavated apex. The outline of the valve is linear or slightly inflated. We provide size ranges and a key to the species of all known extant Thalassionema species, including the new species.

• 出版日期2015-7-3