Geographical and temporal variation in abundance of salmon lice (Lepeophtheirus salmonis) on salmon (Salmo salar L.)
Geographical and temporal variation in abundance of salmon lice (Lepeophtheirus salmonis) on salmon (Salmo salar L.)
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DOI：
10.1016/s1054-3139(97)80020-3
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发表时间：
1997-12-01
影响因子：
3.3
通讯作者：
Boxaspen, K
中科院分区：
文献类型：
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作者：
Boxaspen, K
在Austevoll Aquarium研究站周围地区的调查未能揭示大量鲑鱼虱在水柱中自由游泳阶段的存在。然而，虱子是丰富的鲑鱼举行的笼子里在这个地区。无虱鲑鱼被用来作为收集虱在三个地点选择在不同的距离从其他已知的虱子来源（鲑鱼养殖场）。在特定地点的鲑鱼上的虱子丰度在一年中和不同年份之间都有所不同。在研究期间，变化与温度相关，在较高温度（>6摄氏度）下出现丰度增加。在最高温度期间的地点之间的比较表明，虱子丰度与该地区其他鲑鱼养殖场的距离呈负相关。在气温较低的时期（
Surveys in the area around Austevoll Aquaculture Research station have failed to reveal the presence of a large number of the free-swimming stages of salmon lice in the water column. However, lice were abundant on salmon held in cages in this area. Lice-free salmon were used as collectors of lice at three sites chosen at varying distances from other known sources of lice (salmonid fish farms). The abundance of lice on salmon at particular sites was found to vary during the year and also between years. During the study period, variations were correlated with temperature, increased abundance occurring at higher temperatures (>6 degrees C). Comparisons between sites during the period with the highest temperatures showed that lice abundance was negatively correlated with distance to other salmon farms in the area. During periods of colder temperatures (