10.1594/PANGAEA.727206
Schmalenbach, Isabel
Isabel
Schmalenbach
Mehrtens, Folke
Folke
Mehrtens
Janke, Michael
Michael
Janke
Buchholz, Friedrich
Friedrich
Buchholz
Landings of European lobster (Homarus gammarus) and edible crab (Cancer pagurus) from 1615 to 2009, Helgoland, North Sea
PANGAEA
2011
Macrobenthic long-term series in the German Bight (LTER_Benthos)
Shelf Seas Systems Ecology @ AWI (former Biologische Anstalt Helgoland) (BAH)
1615-01-01T00:00:00/2009-10-30T12:00:00
en
Supplementary Publication Series of Datasets
10.1016/j.fishres.2010.11.016
5 datasets
application/zip
Creative Commons Attribution 3.0 Unported
From 2000 to 2005 about 5400 one-year-old hatchery-reared lobsters (Homarus gammarus) were tagged and released at the rocky island of Helgoland, North Sea. To date, 1-8% of the different release cohorts were recaptured in the field and 8-19% of these lobsters were recaptured from the semi-open area of the outer harbour. The recaptured lobsters indicated good development and growth conditions. The smallest berried females caught were 83 mm carapace length and 4 years old. The proportion of cultured lobsters to all measured lobsters captured around the island was 3-8% in the years 2007-2009. The population size of two cohorts was assessed using the Lincoln-Peterson method and the estimated survival rate averaged 30% and 40%. Minimum landing size of cultured lobsters was reached after 4-7 years. Cultured lobsters showed strong fidelity to their release sites, and thus remained around the island of Helgoland. A basis has been laid to enhance this endangered lobster population by means of a large scale restocking programme.
Supplement to: Schmalenbach, Isabel; Mehrtens, Folke; Janke, Michael; Buchholz, Friedrich (2011): A mark-recapture study of hatchery-reared juvenile European lobsters, Homarus gammarus, released at the rocky island of Helgoland (German Bight, North Sea) from 2000 to 2009. Fisheries Research, 108(1), 22-30
7.900000000000003
54.18830000000002
Helgoland, North Sea