2006 - 2007 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Northern North Sea saithe, cod and haddock 2003/04 - Fisheries Science Partnership

FSP project carried out on the otter trawl fishery for saithe in the northern North Sea in autumn 2003. The project used two trips of a commercial stern trawler, the FV Farnella between 18 September and 5 October. The work plan involved otter trawling under dispensation from the quota regulations on grounds chosen by the vessel skippers in consultation with CEFAS. Total catches of all saithe, cod, and haddock were weighed and classified as 'discarded' or 'retained' according to advice from the fishing crew. Samples of these species from most hauls were also measured individually to obtain length frequency distributions. Otoliths were collected from 382 saithe and 22 cod.本FSP项目于2003年秋季在北海北部海域开展，针对绿青鳕（saithe）的桁拖网（otter trawl）渔业作业展开研究。该项目依托商业尾拖网渔船“法内拉号（FV Farnella）”完成两次出海作业，作业时段为9月18日至10月5日。本次作业的工作方案为：在渔船船长与CEFAS协商选定的渔场范围内，依据配额法规的豁免条款开展桁拖网捕捞作业。 所有绿青鳕、鳕鱼及黑线鳕的总渔获均进行称重，并根据捕捞船员的建议被划分为“丢弃（discarded）”与“留存（retained）”两类。针对多数拖网批次（haul）的上述物种样本，研究人员还逐一进行体长测量，以获取各物种的体长频率分布（length frequency distributions）数据。此外，研究人员从382尾绿青鳕与22尾鳕鱼体内采集了耳石（otoliths）。