Abstract
ABSTRACT The landing obligation of the reformed European Union Common Fisheries Policy is designed to encourage more selective fishing strategies and improve recording of catches. There are allowable exemptions to this landing obligation including for species with high post-release survivability. Discarding patterns of prawns (Nephrops norvegicus) were evaluated in a trawl fishery in the Firth of Clyde, West Scotland, which supplies the live-catch market. Around 30% of the Nephrops caught were discarded, but the reasons for discarding changed seasonally. Using visual indices, physiological biomarkers, and video recordings, this study evaluated the physiological condition linked to short-term survival and predator avoidance behavior of the discarded animals. Although short-term survival after 48-h recovery was high (around 90%) and physiological measures indicated that discarded Nephrops can recover from trawling, survival was negatively affected by levels of physical damage and Hematodinium infection. Tak...
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