Objective
The proposal deals with precision and accuracy issues in two categories of measurements which together encompass most of the data which are routinely required from samples of early life stages of fish:
1) the growth and condition of individuals.
2) the origin of individuals.
Quantitative evaluation of the growth rate and condition of larvae in relation to environmental conditions at the time of capture is an essential pre-requisite to predictive assessment of survival potential. In particular, the identification of starving or sub-optimally growing larvae in the population is a powerful method for evaluating survival probability. Both biochemical and otolith microstructure methodologies offer the prospect of identifying individuals at risk. However, understanding of the underlying physiology of somatic and otolith growth and development is not sufficiently advanced to allow a high degree of accuracy. In particular, decoupling of otolith and somatic growth under some circumstances is recognised but not understood, whilst the precise roles of body size, feeding rate and temperature on the biochemical condition index of RNA/DNA is not known. The aim of this project is to investigate the physiology of growth and development in larvae by a series of controlled laboratory and mesocosm studies, in order to improve the understanding of the growth processes and increase the accuracy of condition and survival predictions from biochemical and otolith microstructure measurements. Determining the origin of early-life stages is important for a number of applications. Origin in this context refers to the timing and location at which a specimen was hatched, and the history of an individuals' growth rate and environment between hatching and capture. For example, the date and temperature of hatching is an important distinguishing feature of sub-populations of herring on the Norwegian shelf which may be traced through larval stages to juveniles and adults, and used to assess the contribution of different spawning groups to the stock. A similar approach can be envisaged for distinguishing the various races of herring in the North Sea. A combination of otolith microstructure and chemical analysis provides the tools necessary for this task. The project will evaluate the discriminatory power of these methods using controlled mesocosm and laboratory experiments and test their precision by reference to field caught material.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- humanities history and archaeology history
- natural sciences biological sciences genetics DNA
- medical and health sciences basic medicine physiology
- natural sciences biological sciences genetics RNA
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
4817 His
Norway
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.