Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Preparation for the evaluation of the list of mandatory research surveys at sea
Sampson, David ; Alvarez, P. ; Armesto, Angeles ; Casey, J. ; Natale, A. Di; Hansson, Maria ; Karp, W.A. ; Mannini, A. ; Panayotova, Marina ; Renaud, F. ; Somarakis, Stylianos ; Spedicato, M.T. ; Stransky, C. ; Verver, S.W. ; Worsoe Clausen, L.A. ; Hoof, L.J.W. van - \ 2018
Luxembourg : Luxembourg (Publications Office of the european Union EWG-18-04) - ISBN 9789279793875 - 51 p.
Where do egg production methods for estimating fish biomass go from here?
Dickey-Collas, M. ; Somarakis, S. ; Witthames, P.R. ; Damme, C.J.G. van; Uriarte, A.R. ; Lo, N.C.H. ; Bernal, M. - \ 2012
Fisheries Research 117-118 (2012). - ISSN 0165-7836 - p. 6 - 11.
anchovy engraulis-encrasicolus - sardine sardinops-sagax - gadus-morhua-l. - pleuronectes-platessa l. - north-sea plaice - solea-solea l. - postovulatory follicles - population-dynamics - trachurus-trachurus - multinomial models
The special theme volume of Fisheries Research is intended to synthesise the current understanding of the methods and applicability of egg production methods (EPM). It originates from a workshop in Athens which also focused on the future challenges to both the science and logistics of carrying out and using egg production methods. This synthesis addresses three interlinked challenges for those using EPM; how methods have, and need to be, improved, what added value can EPM provide directly to aid advice for management of the marine environment and lastly what extra understanding can EPM bring to marine science? EPM surveys offer some of the most intensive sampling of plankton and adult fish populations in fisheries science. They provide, and will probably provide further insights into fish reproductive processes, embryonic development and spatial and temporal variability in fish populations. Researchers should be encouraged to examine new methods for representative real-time sampling, swift processing of samples and integration of sampling of adults and plankton. EPM provides managers with many “added value” products on habitats and spawning and already provides platforms for monitoring hydrography, zooplankton distributions and acoustic back scatter. Some EPM surveys also incorporate monitoring of birds and sea mammals. EPM, together with aquaculture, has progressed understanding of fish reproductive biology and embryo development. EPM provides long time series of both the ichthyoplankton and fish reproductive traits thus enabling informed study of regime change, variability and ecosystem status. As the EPM become more developed, we expect that these contributions to marine science will increase
Egg production methdos in marine fisheries: An introduction
Bernal, M. ; Somarakis, S. ; Witthames, P.R. ; Damme, C.J.G. van; Uriarte, A.R. ; Lo, N.C.H. ; Dickey-Collas, M. - \ 2012
Fisheries Research 117-118 (2012). - ISSN 0165-7836 - p. 1 - 5.
anchovy engraulis-encrasicolus - mackerel trachurus-trachurus - sardine sardinops-sagax - spawning-stock biomass - cod gadus-morhua - ichthyoplankton mortality-rates - generalized additive-models - pleuronectes-platessa l. - herring clupea-harengus - north-sea pla
This paper is an introduction of the Fisheries Research special issue on egg production methods (EPM) that emerged from a dedicated workshop held in Athens, Greece, in 2010. The workshop considered if EPMs are still valid today, it reviewed recent developments in the methods and discussed the utility of EPMs in the future. Importantly, experts from both the daily and the annual egg production methods took part in the workshop. This introduction provides the main concepts underlying EPMs. It also gives a brief history of EPM development over the last two decades with examples of their use worldwide. It provides a review on whether EPMs have fulfilled their objectives. Given their increased utilisation on new fish stocks, and their contribution to scientific advances, EPMs continue to be useful. However, concerns about the bias and precision of the methods remain, and a continuous effort to improve those issues together with the cost-efficiency of the methods is still required.
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