Vaccination and triploidy increase relative heart weight in farmed Atlantic salmon, Salmo salar L
| Autor: | E.O. Koppang, Ian Mayer, Thomas W.K. Fraser, Trygve T. Poppe, Per Gunnar Fjelldal, Thomas Willum Hansen, Jon Egil Skjæraasen |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Male
Veterinary (miscellaneous) Salmo salar Fisheries Physiology Bulbus arteriosus Aquatic Science Biology Body weight Sex Factors Aquaculture medicine Animals Salmo Heart weight business.industry Myocardium Vaccination Heart Organ Size Anatomy biology.organism_classification Triploidy medicine.anatomical_structure Heart size Ventricle Female business |
| Zdroj: | Journal of Fish Diseases. 38:151-160 |
| ISSN: | 0140-7775 |
| Popis: | 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 18 months following vaccination (from c. 50-3000 g body weight). In addition, hearts were examined histologically after 7 months 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text