Occurrence of actinosporean stages of myxosporeans in an inflow brook of a salmon hatchery in the Mena River System, Hokkaido, Japan.
Occurrence of actinosporean stages of myxosporeans in an inflow brook of a salmon hatchery in the Mena River System, Hokkaido, Japan.
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DOI：
10.3354/dao049153
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发表时间：
2002-05
影响因子：
1.4
通讯作者：
C. Székely;S. Urawa;H. Yokoyama
中科院分区：
文献类型：
--
作者：
C. Székely;S. Urawa;H. Yokoyama
在日本-匈牙利研究项目的框架内，研究了生活在北海道鲑鱼孵化场流入小溪中的泥和植被根部的寡毛类动物的放射孢子感染。从1990年调查期间收集的寡毛纲Rhyacodrilus komarovi Timm中分离出两种三放线菌类型、1种棘放线菌类型和1种新放线菌类型。从寡毛类采集后的第二天开始，在3个月的时间内记录橙色放线菌。寡毛纲从研究的第一天开始释放放线孢子数周。个别寡毛纲的孢子排泄是不同步的。棘放线菌、新放线菌和三放线菌孢子的感染率分别为0.7%、7%、3%和3%。4种类型的阳性寡毛孢中放线孢子感染均较强。在本文提出的4种放线孢子类型中，有3种是首次描述。
Actinospore infection of oligochaetes living in the mud and on the roots of vegetation in an inflow brook of a Hokkaido salmon hatchery was studied within the framework of a Japanese-Hungarian research program. Two triactinomyxon types, 1 echinactinomyxon, and 1 neoactinomyxum type were isolated from the oligochaete Rhyacodrilus komarovi Timm, 1990 collected during the survey. The aurantiactinomyxons were recorded over a period of 3 mo starting from the day after oligochaete collection. The oligochaetes released actinospores for several weeks from the first day of the study. Spore excretion of individual oligochaetes was not synchronous. Of the oligochaetes examined, 0.7, 7, 3 and 3%, were infected with the echinactinomyxon, neoactinomyxum and the 2 types of triactinomyxon spores, respectively. Actinospore infection was intense in the positive oligochaetes in all 4 types. Of the 4 actinospore types presented here, 3 are described for the first time.