There is a need for more information on the relationship between diseases and fluctuations of wild populations of marine animals. In the case of C allinectes sapidus reovirus 1 ( C s RV 1, also known as RLV ), there is a lack of baseline information on range, prevalence and outbreaks, from which to develop an understanding of population‐level impacts. An RT ‐ qPCR assay was developed that is capable of detecting 10 copies of t...