Blar i Department of Biological Sciences på emneord "Growth"
Viser treff 1-17 av 17
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Age and growth determination and stock identification using statolith microstructure of Indian squid, Loligo duvauceli
(Master thesis, 2010-05-29)Age and growth and stock identification of Indian squid, Loligo duvauceli were examined by statolith microstructure and morphological measurements. The Indian squid were sampled from the Gulf of Thailand and the Andaman ... -
Changes in water temperature and oxygen: the effect of triploidy on performance and metabolism in large farmed Atlantic salmon
(Peer reviewed; Journal article, 2018)In salmon farming, the use of sterile triploids (3N) can mitigate the problem of escapees interbreeding with wild salmon. However, triploid salmon appear less tolerant to high water temperatures and low oxygen levels ... -
Does density influence relative growth performance of farm, wild and F1 hybrid Atlantic salmon in semi-natural and hatchery common garden conditions?
(Peer reviewed; Journal article, 2016-07)The conditions encountered by Atlantic salmon, Salmo salar L., in aquaculture are markedly different from the natural environment. Typically, farmed salmon experience much higher densities than wild individuals, and may ... -
Earlier hatching and slower growth: a key to survival in the early life history of Norwegian spring spawning herring
(Peer reviewed; Journal article, 2018-10-02)Faster growth in fish larvae is often associated with enhanced survival, and here we investigated whether surviving juvenile Norwegian spring spawning herring Clupea harengus L. generally come from a pool of fast-growing ... -
The effect of continuous light at low temperatures on growth in Atlantic salmon reared in commercial size sea pens
(Peer reviewed; Journal article, 2017-10)The aim of this study was to investigate the effect of continuous light of different duration, applied from late autumn to spring in the second year of the production cycle, on the production performance of Atlantic salmon ... -
Effects of chronic and periodic exposures to ammonia on growth and eye health in juvenile Atlantic halibut (Hippoglossus hippoglossus)
(Master thesis, 2010-02-20)The effect of chronic and periodic peaks of un-ionised ammonia (UIA-N) exposure on growth and eye health in juvenile Atlantic halibut, Hippoglossus hippoglossus, were examined. Fish with mean initial weight 51.7 g (SD, ... -
Effects of rapid temperature changes on Atlantic salmon, Salmo salar, post-smolts
(Master thesis, 2017-06-28)Year round production of Atlantic salmon post-smolts in closed or semi-closed systems opens up for use of seawater from different depths, which will permit stocking of fish from closed containment system to the open sea ... -
Effects of temperature and food availability on larval cod survival: A model for behaviour in vertical gradients
(Peer reviewed; Journal article, 2015-06-08)Recruitment success in living marine resources is variable due to high survival variability of early life stages. Improving our understanding of how environmental and ecological factors mechanistically interact and influence ... -
Growth and diel vertical migration patterns of the toxic dinoflagellate Protoceratium reticulatum in a water column with salinity stratification: the role of bioconvection and light
(Peer reviewed; Journal article, 2015-11-12)Novel data on growth and migratory behaviour of a southern Norwegian strain of Protoceratium reticulatum (Dinophyceae) were obtained from long-lasting (14-22 d) experiments in a water column with salinity gradient (ΔS = 4 ... -
Implications for introgression: Has selection for fast growth altered the size threshold for precocious male maturation in domesticated Atlantic salmon?
(Peer reviewed; Journal article, 2018-12-18)Background: Mature male parr (MMP) represent an important alternative life-history strategy in Atlantic salmon populations. Previous studies indicate that the maturation size threshold for male parr varies among wild ... -
Otolith growth across two generations in Atlantic herring (Clupea harengus)
(Master thesis, 2018-06-27)The Atlantic herring (Clupea harengus) has a wide distribution and a complex metapopulation structure with interactions between the sub-populations. The sub-populations show different adaptations, both genetic and non-genetic, ... -
Phenotypic plasticity in Atlantic herring (Clupea harengus) juveniles reared at two different salinities
(Master thesis, 2015-06-01)A common garden experiment with juvenile herring (Clupea harengus L.) was carried out to investigate the influence of salinity on different phenotypic traits commonly used to investigate population structure in this species. ... -
Ploidy elicits a whole-genome dosage effect: growth of triploid Atlantic salmon is linked to the genetic origin of the second maternal chromosome set
(Peer reviewed; Journal article, 2017-04-11)Background: The Atlantic salmon aquaculture industry is investigating the feasibility of using sterile triploids to mitigate genetic interactions with wild conspecifics, however, studies investigating diploid and triploid ... -
Spawning, settlement and growth of Ciona intestinalis in Øygarden, Hardangerfjorden and Kvitsøy
(Master thesis, 2015-04-24)Due to the increasing aquaculture industry, new resources for feed should be assessed. A high protein content in Ciona intestinalis have increased the interest to farm C. intestinalis, and use as a feed resource. In addition, ... -
Stocking density limits for post-smolt Atlantic salmon (Salmo salar L.) emphasis on production performance and welfare
(Peer reviewed; Journal article, 2017-02)For the development of commercial scale semi-closed sea systems for farming post-smolt Atlantic salmon (Salmo salar), further knowledge is required on the interaction between fish density, farming conditions and fish ... -
Strategies for partition between reproductive investment and body growth in stationary and migratory stocks of Atlantic herring
(Master thesis, 2011-06-01)The present study focused on the trade-off between reproductive investment and body growth of migratory and stationary Atlantic herring (Clupea harengus) populations. Published data from Norwegian spring-spawning (NSS) ... -
Thermal plasticity in farmed, wild and hybrid Atlantic salmon during early development: Has domestication caused divergence in low temperature tolerance?
(Peer reviewed; Journal article, 2016-02-16)Background: In the past three decades, millions of domesticated Atlantic salmon Salmo salar L. have escaped from farms into the wild. Their offspring display reduced survival in the natural environment, which demonstrates ...