A5024459263- Reproductive biology and impacts on aquatic species
- Aquaculture Nutrition and Growth
- Fish Ecology and Management Studies
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Marine and fisheries research
- Sperm and Testicular Function
- Physiological and biochemical adaptations
- Aquaculture disease management and microbiota
- Reproductive Biology and Fertility
- Animal Genetics and Reproduction
- Meat and Animal Product Quality
- Fish Biology and Ecology Studies
- Growth Hormone and Insulin-like Growth Factors
- Crystallography and molecular interactions
- Birth, Development, and Health
- Hypothalamic control of reproductive hormones
- Folate and B Vitamins Research
- Animal Behavior and Reproduction
- Marine animal studies overview
- Healthcare cost, quality, practices
- Thyroid Disorders and Treatments
- Aquatic life and conservation
- Genetic diversity and population structure
Norwegian Institute of Marine Research
2015-2024
National Oceanic and Atmospheric Administration
2023
National Marine Sanctuary Foundation
2023
Cambridge University Press
2022
New York University Press
2022
Austevoll Seafood (Norway)
2008-2021
Institute of Marine Research
2011-2020
NOAA National Marine Fisheries Service
2015
Nord University
2011
University of Basel
2007
The Northwest Region (NWR) Marine Mammal Stranding Network was created in the early 1980s to provide a consistent framework which collect and compile data about marine mammal strandings Oregon Washington. NWR includes nearshore waters 4,243km (2,632 n.miles) of coastline. For years 1930-2002, there were 904 stranding events, representing 951 individual animals 23 species: 4 species balaenopterids, 1 eschrichtiid, 2 physeterids, ziphiids, 10 delphinids phocoenids. Gender determined for 343...
Early puberty poses a significant challenge for male Atlantic salmon in aquaculture due to its negative impact on growth and welfare. The regulation of vertebrates involves 2 key reproductive hormones: follicle-stimulating hormone (FSH) luteinizing (LH) their gonadal receptors. In mice lacking FSH receptor, testes size is reduced, but fertility maintained, while medaka zebrafish with disrupted fshr gene exhibit near normal testis fertility. these fishes both Fsh Lh are present during may...
The role of miRNA in fish sexual development is not elucidated yet. We profiled miRNAs gonads and brains Atlantic halibut using SOLiD sequencing technology. found tissue- sexually dimorphic expression several miRNAs, including miR-29a, miR-34, miR-143, miR-145, miR-202-3p, miR-451, miR-2188. miR-9 miR-202 were abundant brain gonads, respectively. In the next step, we selected some showing differential patterns between sexes performed RT-qPCR on 3 age groups: juveniles, 3-year-, 5-year-olds....
Abstract Sexual maturation in Atlantic cod (Gadus morhua) results loss of appetite and weight during spawning, leads to increased production time required reach desired harvest size, greater mortality reduced food conversion efficiency. Thus, methods stop or delay are urgently needed. In the present study, effect continuous light (LL) treatment on was tested combination with different exercise levels seawater tanks compared controls under natural light. LL lightproof arrested gonadal...
Atlantic Halibut ( Hippoglossus hippoglossus ) has a X/Y genetic sex determination system, but the determining factor is not known. We produced high-quality genome assembly from male and identified parts of chromosome 13 as Y due to sequence divergence between sexes segregation genotypes in pedigrees. Linkage analysis revealed that all chromosomes exhibit heterochiasmy, i.e. male-only female-only meiotic recombination regions (MRR/FRR). show FRR/MRR intervals differ nucleotide diversity...
Maturation of Atlantic salmon male postsmolts is a concern in aquaculture due to its increasing occurrence under intensive rearing conditions and negative impact on growth, welfare seawater readiness. The effect temperature photoperiod maturation was assessed kept freshwater. We used 2 × factorial design with two temperatures (12.5 15 °C) photoperiods (a group continuous light LD24:0 or LL, another receiving 5-week LD12:12 winter signal WS). Salmon the four resulting treatments (1000 parr,...
Functions of vitellogenins have been in the limelight fish reproductive physiology research for decades. The Vtg system acanthomorph teleosts consists two complete forms Vtgs (VtgAa and VtgAb) an incomplete form, VtgC. Insufficient uptake processing their yolk proteins lead to inadequate oocyte hydration ensuing failure acquisition egg buoyancy early developmental deficiencies. This review presents a summary our studies on utilization multiple species with different characteristics, as...
The in vivo swelling and hydration of maturing oocytes Atlantic halibut Hippoglossus hippoglossus were studied order to characterise the osmotic mechanism underlying oocyte oviparous marine teleosts that spawn pelagic eggs. Sequential biopsies from two females, spanning four cycles, examined by osmometry, solute analysis electrophoresis dissected hydrating ovulated cycle biopsied halibuts lasted 33-54 h. majority ovarian existed a pre-hydrated condition (individual wet mass approx. 3.7 mg,...
Atlantic halibut (Hippoglossus hippoglossus) collected off Newfoundland first mature at about 80 cm fork length (FL) for males and 115–120 FL females. Captive did not release milt or eggs have detectable levels of estradiol-17β 11-ketotestosterone until exceeding (males) (females). Estradiol-17β testosterone increased to highest in females during gonadal recrudescence before spawning. Lower were observed spawning fish. Vitellogenin (VTG) A sudden drop VTG preceded the batch eggs....