24-29 августа 2015 г. Диатомовые водоросли рода Oricymba из Вьетнама и Лаоса и его систематическое положение
Куликовский М.С.1, Глущенко А.М.1,2, Коциолек Д.П.3 Kulikovskiy M.S.1, Glushchenko A.M.1,2, Kociolek J.P.3
1Институт биологии внутренних вод им.И.Д.Папанина РАН (Борок, Россия)
УДК 582.261.5
Виды рода Oricymba были изучены в водных экосистемах Вьетнама и Лаоса. Наши результаты обеспечивают новую информацию о морфологии и распространении видов рода Oricymba в Индо-Китае. Обсуждается систематическое положение этого рода. Ключевые слова: диатомовые водоросли; Oricymba; систематика; Вьетнам; Лаос.
The genus Oricymba was described by Jüttner, Krammer, Cox, Van de Vijver et Tuji with Oricymba japonica (Reichelt) Jüttner, Cox, Krammer et Tuji (2010 = Cymbella japonica Reichelt in Kuntze 1898) in Jüttner et al. 2010 chosen as the generitype. This genus was described on the basis a combination of morphological features, including valve symmetry, the presence of a ridge between the valve face and the mantle, areolar structure, position and structure of the apical pore fields, and raphe path. As described by Jüttner et al. (2010), valves are slightly dorsiventral, sometimes symmetrical in outline, elliptical-lanceolate to linear-lanceolate with rounded ends. The valve face is flat, and separated from the mantle by a marginal ridge. An isolated rounded external stigma opening situated between the central nodule and the ventral striae, becomes one or two slit-like stigmal openings occluded by fine ingrowths internally. The raphe is slightly lateral with external undulate and internal straight raphe fissures. The striae are uniseriate, rarely biseriate, extending onto the mantle. The areolae open externally and internally by elongate slits and are partially occluded by dentate projections situated below of valve surface. Internally additional small peg-like projections extend from the edges of the virgae onto the vimines. Apical pore fields are present on the valve mantle only and clearly separated from the areolae. The girdle bands have one row of small pores. Species from the genus Oricymba are studied from water ecosystems of Vietnam and Laos. Three species have been found in Vietnam, including O. japonica (Reichelt) Jüttner, Cox, Krammer et Tuji, O. subovalis Jüttner, Krammer et Cox and O. perjaponica (Krammer et Lange-Bertalot) Kulikovskiy, Glushchenko et Kociolek comb. nov. The two last species are new taxa for diatom flora of Vietnam. A new species is described from Laos, O. voronkinae Glushchenko, Kulikovskiy et Kociolek sp. nov., and its morphology is documented with light and scanning electron microscopy. Oricymba voronkinae sp. nov. represents the first documented occurrence of the genus Oricymba in Laos. Our findings provide new information about the morphology and species distribution of the genus Oricymba in Indo-china. We discuss the systematic position of Oricymba within the Cymbellales.
The authors are grateful to staff of the Russian-Vietnam Tropical Centre, Coastal Branch (Nha Trang, Vietnam) for their assistance in management and sampling in Vietnam.
Список литературы 1. Jüttner I., Krammer K., Van de Vijver B., Tuji A., Simkhada B., Gurung S., Sharma S., Sharma C., Cox E.J. Oricymba (Cymbellales, Bacillariophyceae), a new cymbelloid genus and three new species from the Nepalese Himalaya // Phycologia. 2010. Vol. 49(5). P. 407-423. Статья поступила в редакцию 1.09.2015
The diatom genus Oricymba in Vietnam and Laos with a consideration of its systematic placement Kulikovskiy M.S., Glushchenko A.M., Kociolek J.P. Species of the genus Oricymba were studied from water ecosystems of Vietnam and Laos. Our results provide a new data on the morphology and distribution of species from the genus Oricymba in Indo-china. The systematic position of this genus is discussed. Key words: diatoms; Oricymba; systematic; Vietnam; Laos.
Об авторах Куликовский Максим Сергеевич – Maxim S. Kulikovskiy кандидат биологических наук max-kulikovsky@yandex.ru Глущенко Антон Михайлович – Anton M. Glushchenko аспирант, Институт биологии внутренних вод им. И.Д.Папанина РАН, пос. Борок, Ярославская обл., Россия (I.D. Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Russia); Калужский государственный университет им. К.Э.Циолковского, Калуга, Россия (Kaluga State University named after K.E. Tsiolkovsky, Kaluga, Russia) chelovek91_91@mail.ru Коциолек Джон Патрик - Kociolek John Patrick профессор, PhD, Museum of Natural History and Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, USA (Музей естественной истории и Кафедра экологии и эволюционной биологии, Университета Колорадо, Боулдер, США) Корреспондентский адрес: 152742, Россия, Ярославская обл., Некоузский р-н, п. Борок, Институт биологии внутренних вод им. И.Д.Папанина РАН.
ССЫЛКА НА СТАТЬЮ: Kulikovskiy M.S., Glushchenko A.M., Kociolek J.P. Диатомовые водоросли рода Oricymba из Вьетнама и Лаоса и его систематическое положение [The diatom genus Oricymba in Vietnam and Laos with a consideration of its systematic placement] // Вопросы современной альгологии (Issues of modern algology). 2015. № 3 (10). URL: http://algology.ru/808
При перепечатке ссылка на сайт обязательна
На ГЛАВНУЮ
|
|||
|
|