Vaccination and triploidy increase relative heart weight in farmed Atlantic salmon, Salmo salar L.
Vaccination and triploidy increase relative heart weight in farmed Atlantic salmon, Salmo salar L.
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DOI：
10.1111/jfd.12216
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发表时间：
2015-02-01
影响因子：
2.5
通讯作者：
Fjelldal, P. G.
中科院分区：
文献类型：
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作者：
Fraser, T. W. K.;Mayer, I.;Fjelldal, P. G.
硬骨鱼的心脏形态特别具有可塑性，养殖和野生大西洋鲑鱼的心脏形态也有所不同。然而，人们对不同的文化习俗和性别如何影响心脏形态知之甚少。本研究调查了疫苗接种、三倍体和性别如何影响养殖大西洋鲑鱼接种疫苗后 18 个月（体重约 50-3000 克）的心脏大小和心脏形态（心室形状、动脉球角度）。此外，心脏在海水中浸泡7个月后进行组织学检查。所有取样的鱼均未性成熟。与未接种疫苗的鱼相比，接种疫苗的鱼的心脏相对于体重明显更重，并且心室呈三角形，这表明心脏工作负荷更大。无论时间如何，与二倍体相比，三倍体的心脏相对于体重明显更重，动脉球的角度更锐，心外膜中的脂肪沉积更少。在海水转移时，三倍体的心室也比二倍体更呈三角形。性别对动脉球角度有短暂影响，但对相对心脏重量或心室形状没有影响。从形态学的角度来看，结果表明疫苗接种和三倍体增加了养殖大西洋鲑鱼的心脏工作量。
Heart morphology is particularly plastic in teleosts and differs between farmed and wild Atlantic salmon. However, little is known about how different culture practices and sex affect heart morphology. This study investigated how vaccination, triploidy and sex affected heart size and heart morphology (ventricle shape, angle of the bulbus arteriosus) in farmed Atlantic salmon for 18months following vaccination (from c. 50-3000g body weight). In addition, hearts were examined histologically after 7months in sea water. All fish sampled were sexually immature. Vaccinated fish had significantly heavier hearts relative to body weight and a more triangular ventricle than unvaccinated fish, suggesting a greater cardiac workload. Irrespective of time, triploids had significantly heavier hearts relative to body weight, a more acute angle of the bulbus arteriosus and less fat deposition in the epicardium than diploids. The ventricle was also more triangular in triploids than diploids at seawater transfer. Sex had transient effects on the angle of the bulbus arteriosus, but no effect on relative heart weight or ventricle shape. From a morphological perspective, the results indicate that vaccination and triploidy increase cardiac workload in farmed Atlantic salmon.