gill damage to atlantic salmon (salmo salar) caused by the common jellyfish (aurelia aurita) under experimental challenge吉尔损害大西洋鲑鱼(大西洋鲑)造成的常见的水母(蛹aurita)在实验的挑战.pdfVIP

Gill Damage to Atlantic Salmon (Salmo salar) Caused by the Common Jellyfish (Aurelia aurita) under Experimental Challenge 1,2,3 2 4 1 2 2 Emily J. Baxter *, Michael M. Sturt , Neil M. Ruane , Thomas K. Doyle , Rob McAllen , Luke Harman , Hamish D. Rodger5 1 Coastal and Marine Research Centre, Environmental Research Institute, University College Cork, Cork, Ireland, 2 Department of Zoology, Ecology and Plant Science, School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland, 3 Aquaculture and Fisheries Development Centre, School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland, 4 Fish Health Unit, Marine Institute, Co. Galway, Ireland, 5 Vet-Aqua International, Co. Galway, Ireland Abstract Background: Over recent decades jellyfish have caused fish kill events and recurrent gill problems in marine-farmed salmonids. Common jellyfish (Aurelia spp.) are among the most cosmopolitan jellyfish species in the oceans, with populations increasing in many coastal areas. The negative interaction between jellyfish and fish in aquaculture remains a poorly studied area of science. Thus, a recent fish mortality event in Ireland, involving Aurelia aurita, spurred an investigation into the effects of this jellyfish on marine-farmed salmon. Methodology/Principal Findings: To address the in vivo impact of the common jellyfish (A. aurita) on salmonids, we exposed Atlantic salmon (Salmo salar) smolts to macerated A. aurita for 10 hrs under experimental challenge. Gill tissues of control and experimental treatment groups were scored with a system that rated the damage between 0 and 21