Diet Shifts Detected in Sandbar Sharks Using a Nonlethal Technique

sandbarshark credit NOAATraditionally, dietary studies of sharks have been based on stomach content analysis, which often involves the lethal practice of cutting open a shark. This method, while effective, only provides a snapshot of ingested food in the days prior to death. Furthermore, it is a practice that often requires sacrificing a large number of sharks in order to characterize a species’ diet, and is not an appropriate choice for heavily exploited species like many sharks (Shiffman et al. 2012).  

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This Journal Summary was originally featured in the February 2015 issue of Fisheries magazine.