Native species still exist in some isolated areas in Southern and Central Sweden, far away from crayfish hatcheries of American species, and are raised as well on other small hatcheries on the Öland and Gotland Islands and in the Småland and Blekinge Regions.
The classical preparation, crayfish are boiled with dried head dills. This dish is fundamental to the dinners that traditionally take place at the end of summer (kräftskiva).
Issues Surrounding Astacus Astacus
Parasitical fungus always present in Scandinavian waters
Prevalence grew with the importation of crayfish from the States.
Importation of the American Pacifastacus leniusculus considerably increased to satisfy the growing demand, marking the end of Astacus astacus.
Steps taken to ensure Survival
Lives symbiotically in the waters in which it flourishes.
In the autumn these crayfish are fished with special crayfish traps.
Handful of aquaculture farms in Sweden that raise this native crayfish.
Farming is an intensive form of aquaculture, where the crayfish live in man-made ponds.
Sorted out for size and sex during the period of growth, which can be 2-5 years.
More intensive farms may sort the crayfish more often.
The crayfish are also fed during the growth period. No chemicals, drugs, medicaments or nutrients are added.
Key Figures in revival and Survival
Roberta Buffoni Hall
Researcher at Lund University
References http://www.science.lu.se/o.o.i.s/10867 http://www.slowfoodfoundation.org/eng/arca/dettaglio.lasso?cod=628&prs=0 http://en.wikipedia.org/wiki/Astacus_astacus By Scott Newman