Nearby farms are a source of lice for wild salmonids: a reply to Jansen et al. (2016)

Aquaculture Environment Interactions

R. Nilsen¹  L. Asplin¹  R. M. Serra-Llinares¹  B. Finstad¹  P. A. Bjørn¹ 

关键词: Temperature;    Salmon lice;    Wild salmonids;    Salmon farms;    Lepeophtheirus salmonis;   

DOI  :  10.3354/aei00181

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Jansen et al. (2016; Aquacult Environ Interact 8:349-350) question the regression analysis presented in Serra-Llinares et al. (2014; Aquacult Environ Interact 5:1-16), which correlates lice abundances on farmed and wild fish. Jansen et al. (2016) argue that the correlation might not reflect a cause–effect relationship but be instead a mere artifact of the spatio-temporal covariance in lice abundance on farmed and wild fish driven by temperature. In this Reply Comment we revisit the analysis presented in Serra-Llinares et al. (2014) and further re-analyze our data following the statistical approach used by Helland et al. (2015; Aquacult Environ Interact 7:267-280), to rule out the potential confounding effect of temperature. We conclude that Jansen et al. (2016) were correct in conveying part of the observed correlation to the effect of temperature; however, there is solid evidence of a significant influence of lice originating from nearby farms on the observed lice abundances on wild fish, even after the effect of temperature is accounted for.

【 授权许可】

Unknown