Some Fungi and Water Molds in Waters of Lake Michigan with Emphasis on Those Associated with the Benthic Amphipod Diporeia spp.
Some Fungi and Water Molds in Waters of Lake Michigan with Emphasis on Those Associated with the Benthic Amphipod Diporeia spp.
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DOI：
10.3394/0380-1330-34.4.774
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发表时间：
2008-12-01
影响因子：
2.2
通讯作者：
Nalepa, Thomas F.
中科院分区：
文献类型：
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作者：
Kiziewicz, Bozena;Nalepa, Thomas F.
为了确定水中真菌的种类以及与底栖片脚类双足动物Diporeia spp.有关的真菌，在密歇根湖双足动物数量严重下降的地区的不同深度收集了样本。没有发现真菌与活的，刚死的，或从密歇根湖的水分开培养的干燥的双波利亚鱼有关。在密歇根湖水体中，用死的双孔藻和其他有机基质（蛇皮和大麻籽）培养真菌，发现了丰富多样的真菌和水霉菌群落。共发现31种，最常见属为Achlya、Aphanomyces、Myzocytium和Pythium。总体上，物种在水体中分布均匀；也就是说，在近岸（10-15米）和近海（60-80英寸）水域之间，以及近地表（1米）和近底（离底1米）水域之间，物种丰富度几乎没有差异。采样时间选择在非分层期（4月和10月），以最大限度地增加采集的物种数量，这可能有助于观察到均匀的空间格局。虽然结论必须与我们的检测方法相结合，但我们没有发现真菌感染与湖泊该地区的Diporeia有关的证据。
To determine types of fungi in the water and associated with the benthic amphipod Diporeia spp., samples were collected at various depths in Lake Michigan in an area where the Diporeia population was in a severe state of decline. No fungi were, found associated with living, freshly-dead, or dried Diporeia cultured separately from Lake Michigan water. When dead Diporeia and other organic substrates (snake skin and hemp seeds) were used to grow fungi in Lake Michigan water, a rich and diverse fungal and water mold community was revealed. A total of 31 species were found, with the most common genera being Achlya, Aphanomyces, Myzocytium, and Pythium. In general, species were homogeneously distributed in the water; that is, few differences were found in species richness between nearshore (10-15 m) and offshore (60-80 in) waters, and between near-surface (1 m) and near-bottom waters (1 m off bottom). Sampling occurred during the unstratified period (April and October) to maximize the number of species collected, which may have contributed to the uniform spatial pattern observed. While conclusions must be placed in context with our methods of detection, we found no evidence that a fungal infestation was associated with Diporeia in this region of the lake.