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亚得里亚海泻湖中的底栖纤毛虫。

Benthic ciliates in Adriatic Sea lagoons.

作者信息

Madoni Paolo

机构信息

Department of Environmental Sciences, University of Parma, Parco Area delle Scienze 11/A, 43100 Parma, Italy.

出版信息

Eur J Protistol. 2006 Sep;42(3):165-73. doi: 10.1016/j.ejop.2006.04.003. Epub 2006 Jun 23.

Abstract

Sediment samples were collected from four sandy and muddy bottom sites at both Sacca di Goro lagoon (northern Adriatic Sea) and Lesina lagoon (southern Adriatic Sea) on one occasion in May and one occasion in July in order to make a comparative study of ciliate abundance and diversity. The temperature, pH, dissolved oxygen, and redox potential were measured at the time of collection, the water content of the sediments was determined, and samples subjected to granulometric analysis. The ciliated protozoa in sub-samples from the top centimeter of sediment were identified to genus and species level and enumerated. Ciliates belonging to 38 and 33 species were found in the sediment of Sacca di Goro and Lesina, respectively, the diversity of ciliates varying widely between stations. Total ciliate numbers ranged from 32 to 759 cm(-2) and from 2 to 256 cm(-2) at Sacca di Goro and Lesina, respectively; the ciliate biomass ranged from 1.1 to 30.3 microg C cm(-2) in the samples collected at Sacca di Goro, and from 0.01 to 157 microg C cm(-2) in the samples collected at Lesina lagoon. Aspidisca lynceus, Aspidisca steini, Chilodonella uncinata, Frontonia marina, Pleuronema marinum, Strombidinopsis minimum, Strombidium sp., and Urotricha sp., were observed at the two lagoons but not in all stations; Keronopsis flavicans and Trachelostyla pediculariformis were often numerous at Goro lagoon, A. lynceus, Condylostoma patulum and Tracheloraphis teissieri were the most abundant ciliates observed at Lesina lagoon.

摘要

为了对纤毛虫的丰度和多样性进行比较研究,于5月的某一天和7月的某一天,从萨卡迪戈罗泻湖(亚得里亚海北部)和莱西纳泻湖(亚得里亚海南部)的四个沙质和泥质底部站点采集了沉积物样本。在采集时测量了温度、pH值、溶解氧和氧化还原电位,测定了沉积物的含水量,并对样本进行了粒度分析。对沉积物顶部1厘米子样本中的纤毛虫原生动物进行了属和种水平的鉴定和计数。在萨卡迪戈罗和莱西纳的沉积物中分别发现了属于38种和33种的纤毛虫,不同站点间纤毛虫的多样性差异很大。萨卡迪戈罗和莱西纳的纤毛虫总数分别为32至759个/平方厘米和2至256个/平方厘米;在萨卡迪戈罗采集的样本中,纤毛虫生物量为1.1至30.3微克碳/平方厘米,在莱西纳泻湖采集的样本中,纤毛虫生物量为0.01至157微克碳/平方厘米。在两个泻湖的所有站点均观察到了敏捷盾纤虫、施氏盾纤虫、钩状斜管虫、海洋前口虫、海洋侧毛虫、微小拟柱虫、柱虫属、旋毛虫属,但并非在所有站点都有;黄凯伦虫和具茎颈口虫在戈罗泻湖数量通常较多,敏捷盾纤虫、展口凹口虫和泰氏吸管虫是在莱西纳泻湖观察到的数量最多的纤毛虫。

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