Fisheries dataset on moulting patterns and shell quality of American lobsters H. americanus in Atlantic Canada

Monitoring the moulting phenology of American lobsters (Homarus americanus) is important for maintaining sustainable lobster stocks. Changes in lobster landings can affect reproduction and disease susceptibility. Data on lobster moult indicators and on life-history traits (sex, size) were collated from a twelve-year monitoring program (2004-2015) in six lobster fishing areas in Atlantic Canada. A total of 141,659 lobsters were sampled over 1,195 sampling events using a standardized protocol and commercial lobster fishing traps. The dataset contains pleopod stages, estimated hemolymph protein levels (degrees Brix values) and shell hardness as well as lobster sex and size. Evaluation of sex ratio dynamics is also possible but existing biases in sampling males and females needs to be noted. This dataset is valuable in terms of inferring spatio-temporal trends in the life history of lobsters, as well as in the analysis of their moult cycle, and hence more generally for fisheries science and marine ecology.

Automated summary

Monitoring the moulting phenology of American lobsters is essential for maintaining sustainable lobster stocks. This study collected data over a twelve-year period from six lobster fishing areas in Atlantic Canada, analyzing lobster moult indicators and life-history traits. The dataset is valuable for understanding lobster life history, moulting cycle, and fisheries science and marine ecology.