Genetic variability in marine bivalvia: implications and applications in molluscan mariculture
AuthorWilkins, N P
MetadataShow full item record
AbstractThe extent of genetic variability at enzyme gene loci is assessed in twelve species of marine bivalve molluscs of actual or potential commercial importance. Approximately one third of these loci are polymorphic, average heterozygosity is 0.14, and an average of 3.9 alleles are segregating per polymorphic locus. Hatchery-produced samples exhibit a lower proportion of polymorphic loci and a loss of some alleles at polymorphic loci. In two hatchery-produced families of Crassostrea gigas, phenotype frequencies at two loci depart from Mendelian expectations in young individuals. The implications of these hatchery induced alterations are discussed, together with some possible applications of biochemical genetics in molluscan mariculture.
DescriptionPermission to include this article in this repository has been obtained from the author, Professor Noël P. Wilkins.
CitationWilkins, N.P. (1976) Genetic variability in marine bivalvia: implications and applications in molluscan mariculture. Proceedings of the 10th European Symposium on Marine Biology Vol. 1: Mariculture, pp. 549-563
Showing items related by title, author, creator and subject.
OATP (Evaluation of the promotion of Offshore Aquaculture Through a Technology Platform)Jackson, D.; Drumm, A.; Fredheim, A.; Lader, P.; Fernáandez Otero, R.; Marine Institute; SINTEF Fisheries and Aquaculture Ltd.; Centro Technologico del Mar, Fundacion CETMAR (Marine Institute, 2011)This is the final report of the project OATP which investigated the opportunity and usefulness for the aquaculture industry to promote offshore aquaculture through a technological platform. The report is divided into five sections and begins with an executive summary of the project. In section two it discusses the European aquaculture sector including vision, strengths and gaps. The third section involves stakeholder consultation feedback, touching on potential species, regulation, planning frameworks, safety, environmental considerations and technology involved. Section four offers recommendations for stakeholders, covering ethical issues, potential species, regulation, planning, safety and environment as well. The fifth and last section features a sector overview by country and report appendices.
The National Surveillance Monitoring Programme for Residues in Farmed FishMarine Institute (Marine Institute, 2015)All European Member States have a responsibility to monitor the use of veterinary medicines in food producing animals, to ensure that produce from these animals do not contain residues that could be harmful to consumers. It is a requirement to implement surveillance monitoring in accordance with the Residues Directive (Directive 96/23/EC) and to have in place national plans (National Residues Control Plan-NRCP) for the monitoring of certain chemical substances and residues in a range of food producing species and products e.g. cattle, pigs, sheep, farmed finfish. The National Residues Control Plan for Aquaculture in Ireland is specifically for farmed finfish and forms part of the overall National Residue Control Plan.
Tools for Appropriate Assessment of Fishing and Aquaculture Activities in Marine and Coastal Natura 2000 Sites. Report VI: Biogenic Reefs (Sabellaria, Native Oyster, Maerl).ABPmer (ABP Marine Environmental Research Ltd, 2013)Ireland has many coastal and marine habitats and species that are of national and international conservation importance. The value of these has been recognised by the designation of a number of Special Areas of Conservation and Special Protected Areas through the EU Habitats Directive (92/43/EEC) and EU Birds Directive (2009/147/EC). Together these sites form part of the European network of Natura 2000 sites. This report and accompanying annexes is part of a series of documents that present a risk assessment tool developed by ABPmer to assess the effects of fishing and aquaculture activities on the Annex I habitats and Annex II species present in Natura 2000 sites. The tool is designed to support the preparation of screening statements and Appropriate Assessments. Specifically this report presents the project deliverables for the assessment of Biogenic Reefs (Sabellaria, Native Oyster, Maerl)and describes the potential use of the risk assessment tool.