The Swedish West Coast Crab
- Edible crab Fishery Biology and Sustainable Management
In this project (2002-2005) I collaborated with crab fishermen along the Swedish westcoast. On regular basis I sampled their crab capture (sex, carapace width, discards), and collected subsamples for maturity/fecundity and genetic analyses. In addition, the fishermen were given 3 standardised pots (chamber type, no escape gaps) for which they reported capture numbers (including sex and size) during their fishery season. I also performed mark-recapture experiments at different locations along the Kattegat and Skagerrak coast.
High Quality Norway lobster
- Live-storage of creel captured Nephrops
In this project (2005-2008) me and collegues co-operated with fishermen from the Northern Bohuslän, Skagerrak for the development of live-storage handling of creel-captured lobsters. In the starting phase we performed a study trip to Scotland including the Hebrides to learn from experienced companies and fishermen. During the project we evaluated different potential handlings onboard the vessel (both in the field and with simulations in laboratory), and we tested different biofilters for a re-circulating land-based storage system (their up-start process and capacity).
In this project (2007-2008) me and Annika Lindkvist sampled Norway lobsters from both trawls and creels at two Swedish locations in the autumn 2007 for prevalence studies of the blood parasite Hematodinium. We analysed the samples both with histological and PCR-based method (Gruebl, T. et al. 2002 in Dis Aquat Org, 187 bp Hematodinium -specific sequence), and compared the result with external observations on the parasite occurrence.
Parasitic Hematodinium in Nephrops
- Prevalence in creel and trawl captures, and methodological comparisons