Host preference of adult Caligus elongatus Nordmann in the laboratory and its implications for Atlantic cod aquaculture.
Host preference of adult Caligus elongatus Nordmann in the laboratory and its implications for Atlantic cod aquaculture.
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实验室中成年 Caligus elongatus Nordmann 的寄主偏好及其对大西洋鳕鱼养殖的影响。
DOI：
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发表时间：
2006
影响因子：
2.5
通讯作者：
P. A. Heuch
中科院分区：
文献类型：
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作者：
O. Oines;J. H. Simonsen;J. Knutsen;P. A. Heuch
海虱Caligus elongatus利用一系列海洋鱼类作为宿主，有人建议养鱼场感染成虫C。从野生鱼类宿主中分离出来。我们通过实验评估了被驱逐的虱子是否会回到它们原来的宿主物种。成年虱子从野生团头鱼和saithe提交团头鱼，海鳟鱼，大西洋鳕鱼，saithe和欧洲的比目鱼。所有鱼类都被感染。块状鱼和鳕鱼是强烈的首选，其次是塞特，鳟鱼和比目鱼。来自野生塞的虱子表现出对塞塞和圆鱼的偏好，其次是鳕鱼、海鳟鱼和比目鱼。mtCO1基因被用来确定虱子的基因型。来自圆鱼的虱是基因型1。来自赛特的虱主要为基因2型。C. elongatus的宿主偏好略有不同：来自saithe的虱子的辨别力较低。这些数据支持了C.长体线虫可以在不同的寄主物种之间转移。鳕鱼是一个有吸引力的主机虱子从圆鱼和saithe，这表明C。细长体可能成为养殖鳕鱼的严重害虫。
The sea louse Caligus elongatus utilizes a range of marine fish species as hosts, and it has been suggested that fish farms are infected with adult C. elongatus from wild fish hosts. We assessed experimentally whether dislodged lice return to their original host species. Adult lice from wild lumpfish and saithe were presented to lumpfish, sea trout, Atlantic cod, saithe and European plaice. All fish species became infected. Lumpfish and cod were strongly preferred, followed by saithe, trout and plaice. Lice from wild saithe showed a preference for saithe and lumpfish, followed by cod, sea trout and plaice. The mtCO1 gene was used to determine the genotypes of the lice. Lice from lumpfish were genotype 1. Lice from saithe were mainly genotype 2. The two genotypes of C. elongatus differed slightly in their host preferences: lice from saithe were less discriminating. The data support the hypothesis that adult C. elongatus may transfer between different host species. Cod is an attractive host for lice from both lumpfish and saithe, which suggests that C. elongatus may become a serious pest of farmed cod.