Browsing Havforskningsinstituttet by Subject "egg quality"
Now showing items 1-20 of 24
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The application of tank experiments to the study of reproductive potential in teleosts using Gadus morhua as a test model
(ICES CM documents, Working paper, 2000)Age-based population assessments (VPA) have often failed to show a clear relationship between spawning stock biomass and either recruitment or biomass estimated from annual egg production. Recent work has shown that the ... -
A comparison of egg quality and larval viability between cultured coastal cod and wild arcto-norwegian cod
(ICES CM documents;1991/F:41;, Working paper, 1991)Experiments on cod eggs revealed an inverse relationship between egg diameter and mortality. Further, larvae hatching from small eggs showed a redeuced feeding ability. Other methods to characterice larval viability ... -
Effects of different rearing environments on the mortality of Atlantic salmon broodstock and eggs
(ICES CM Documents;1984/F:26, Working paper, 1984)Atlantic salmon (Salmo salar) reared for three years in seawater were moved to brackish- and freshwater before they matured. A control group matured in seawater. The groups were given different feeding regimes the last ... -
Effekter av luftkanonskyting på egg, larver og yngel. Undersøkelser ved Havforskningsinstituttet og Zoologisk laboratorium, UIB
(Fisken og havet, Research report, 1996)I dette prosjektet har vi utført forsøk med egg, plommesekklarver, larver, postlarver og yngel av fem arter i forbindelse med luftkanonskyting. Deretter har vi observert hvilke effekter dette måtte få for klekkesuksess ... -
The influence of byproducts from vinylchloride production on fertilization, development and larval survival on plaice, cod and herring eggs
(ICES CM Documents;1971/E:9, Working paper, 1971) -
Kontroll av reproduksjon og eggekvalitet i marin fisk, spesielt kveite
(Rapport fra senter for havbruk;1993 Nr. 1, Working paper, 1993) -
Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus
(Working paper, 2010-02-11)In many marine species, large females tend to produce more robust offspring than small females. However, knowledge on maternal influences in decapod crustaceans is limited. This is unfortunate since many decapod populations ... -
Rearing of halibut : I. Incubation and the early larval stages
(ICES CM Documents;1974/F:41, Working paper, 1974) -
Report of the Working Group on Mass Rearing of Juvenile Marine Fish [Conwy, UK, 22- 24 June, 1995]
(ICES CM Documents;1995/F:4, Working paper, 1995) -
Report of the Working Group on Mass Rearing of Juvenile Marine Fish to the Mariculture Committee of ICES [Bergen, 24- 26 June, 1993]
(ICES CM Documents;1993/F:8, Working paper, 1993) -
Report of the Working Group on Mass Rearing of Juvenile Marine Fish to the Mariculture Committee of ICES [Vigo, Spain, 6 -8 June, 1988]
(ICES CM Documents;1988/F:38, Working paper, 1988) -
Report of the Workshop on Identification and Staging of Mackerel and Horse Mackerel Eggs [Lowestoft, UK, 4- 13 December, 2000]
(ICES CM Documents;2001/G:1, Working paper, 2001) -
Selective mecanisms of significance in the survival of fish
(Fisken og havet, Research report, 1995)The adult fish can during the reproductive process select for three different parameters; 1- time of spawning, 2- location of spawning, and 3- egg size. In this work all three parameters are discussed, but particular ... -
Sensitivity of potential recruitment to stock structure in the presence of temporally varying survival.
(ICES CM documents, Working paper, 1999)In this paper we discuss the results-of a modelling study which quantifies differences in the number of potential recruits produced from a range of age-structured populations over a spawning season with temporally varying ... -
Some possible explanations to Baltic cod (Gadus morhua L.) reproduction disturbances with special emphasis on lipids - an overview
(ICES CM Documents;1999/U:5, Working paper, 1999)Disturbances in Baltic cod reproduction, additional to the basic problems related to low salinity and oxygen content, are discussed. Abnormal cod embryos appeared first in 1979 and have been observed since. Still recruitment ... -
Studies on the chemical structure of cod egg chorion
(ICES CM Documents;1984/F:10, Working paper, 1984)The chemical structure of the cod egg chorion has been investigated in preparations of chorion obtained after decompression rupture of cod eggs. The chorion was purified free of non-integral components by sucrose gradient ... -
The effect of ambient salinity on the buoyancy of eggs from the Atlantic halibut (Hippoglossus hippoglossus)
(ICES CM Documents;1986/F:52, Working paper, 1986)The effect of ambient salinity on buoyancy and the formation of perivitelline fluid in eggs from the Atlantic halibut Hippoglossus hippoglossus have been investigated. The results clearly demonstrate that the water ... -
The effect of carotenoids on the development of roe and on growth rate of Atlantic salmon fry
(ICES CM Documents;1982/M:12, Working paper, 1982) -
The effects of maternal status of Arcto-Norwegian cod on egg quality and vitality of early larvae. 1. The collection and characteristics of the cod females, a pilot study
(ICES CM Documents;1992/G:78, Working paper, 1992)On the basis of a new field method to determine the stage of spawning, egg groups from Arcto-Norwegian cod females in different stage of spawning were selected for further studies on egg quality and vitality of early ...