Acronym NA
Category
Fisheries
Title A pilot study on the multidisciplinary approach for the genetic stock identification of herring in the Northeast Atlantic: Biodiversity, functional and chemical properties Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National
Coordinator institution
MATIS - Matis Ltd (Iceland)
Institutions involved
NA
Start year 2013 End year 2015 Funding (€) € NA Website https://matis.is/skyrsla/forverkefni-til-rannsokna-a-erfdasamsetningu-islensku-sildarinnar-samanborid-vid-adra-stofna-i-nordaustur-atlantshafi-liffraedilegur-fjolbreytileiki-og-vinnslueiginleikar-a-pilot-study-on-the-multi/ Summary "Sustainable fisheries management and quota decisions made by authorities are based on knowledge of fish stock structures and their sizes. Herring is a highly migratory fish species, and therefore it is likely to show low genetic differences among stocks. The mixed stock herring fishery creates considerable problems for the industry and the management of the stocks. In this project more than 4,500 individuals were sampled from 9 putative herring stocks in the Northeast Atlantic Ocean during the years 2008 and 2012. The sampling accomplished in the project is extensive and valuable for future research projects. The results of the genetic study based on 24 microsatellite genetic loci showed that the local Norwegian fjord stocks were significantly different from all other putative stocks. The other Northeast Atlantic herring stock units were not found to be significantly different. Power analyzes performed during this study revealed that the sampling scheme, protocols and genetic design were sufficient to detect any level of genetic differentiation around 0.001. Therefore, a more sensitive type of genetic markers is needed for the problem addressed, such as SNPs (single nucleotide polymorphism) and that work has already started. Biological parameters alone did not have enough discriminating power for stock identification. The Icelandic summer-spawning herring (ISSH) and the Norwegian spring-spawning herring (NSSH) differed mainly in color and water/fat content. The herring from the two stocks were also found to be different in relation to maturity and weight.
The aims of the project were:
- to develop a genetic approach based on 20-25 microsatellite loci to study the genetic variation of herring stocks in the Northeast Atlantic Ocean
- to use genetic, biological and otolith characters as discriminating parameters for stock identification
- to analyze the physicochemical characteristics of different herring stocks."
Keywords
Herring;
Fish;
Fisheries management;
Genetic;
Stock assessment;
Marine Region
36
Iceland Grounds (27.Va)
25
Faroes Grounds (27.Vb)
2
Marine Region Map
