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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Record number 321935
Title Plaice egg mortality: can we determine survivorschip?
Author(s) Dickey-Collas, M.; Fox, C.J.; Nash, R.D.M.; O'Brien, C.M.
Source Journal of Sea Research 50 (2003)2-3. - ISSN 1385-1101 - p. 211 - 225.
Department(s) RIVO Biologie en Ecologie
Publication type Refereed Article in a scientific journal
Publication year 2003
Keyword(s) pleuronectes-platessa l. - cod gadus-morhua - southern north-sea - solea-solea l. - isle-of-man - irish-sea - developmental defects - physical processes - spawning biomass - marine fish
Abstract The daily mortality rate of cohorts of plaice eggs in the Irish Sea is estimated throughout the spawning season in 1995 and 2000, using general additive models of egg production. Daily mortality (z) was found to vary between 0.15 and 0.29. Mortality rates declined through the season in 1995 but not in 2000. There were significant differences in the mortality rates of individual cohorts of eggs. The suitability of an exponential decay model to describe daily mortality is discussed. The mortality rates conform to previously described relationships between fish eggs and temperature. The estimates of mortality rate were found to be robust to imprecision in egg ageing, but ageing imprecision led to a bias in the estimation of survivorship of eggs from spawning to hatch. The bias will vary with mortality rate
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