Blar i Bergen Open Research Archive på forfatter "Folkvord, Arild"
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Increasing temperature and prey availability affect the growth and swimming kinematics of Atlantic herring (Clupea harengus) larvae
Allan, Bridie Jean Marie; Browman, Howard; Shema, Steven; Skiftesvik, Anne Berit; Folkvord, Arild; Durif, Caroline; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2022)Climate change will increase the magnitude and duration of warming events and the variability in the phenology and abundance of available prey to the early life stages of fish. These factors influence physiological, ... -
Is it possible to photoperiod manipulate spawning time in planktivorous fish ? A long-term experiment on Atlantic herring
dos Santos Schmidt, Thassya Christina; Berg, Florian; Folkvord, Arild; Pires, Alessandra M.A.; Komyakova, Valeriya; Tiedemann, Maik; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2022)The oocyte development (vitellogenesis) of individual fish is highly dependent upon their physiology which is influenced by both intrinsic and extrinsic factors. Thus, if individuals encounter poor biophysical conditions, ... -
Life in the fast lane: Revisiting the fast growth—High survival paradigm during the early life stages of fishes
Robert, Dominique; Shoji, Jun; Sirois, Pascal; Takasuka, Akinori; Catalán, Ignacio A.; Folkvord, Arild; Ludsin, Stuart A.; Peck, Myron A.; Sponaugle, Su; Ayón, Patricia M.; Brodeur, Richard D.; Campbell, Emily Y.; D'Alessandro, Evan K.; Dower, John F.; Fortier, Louis; García, Alberto G.; Huebert, Klaus B.; Hufnagl, Marc; Ito, Shin-ichi; Joh, Mikimasa; Juanes, Francis; Nyuji, Mitsuo; Oozeki, Yoshioki; Plaza, Guido; Takahashi, Motomitsu; Tanaka, Yosuke; Tojo, Naoki; Watari, Shingo; Yasue, Naotaka; Pepin, Pierre (Journal article; Peer reviewed, 2023)Early life survival is critical to successful replenishment of fish populations, and hypotheses developed under the Growth-Survival Paradigm (GSP) have guided investigations of controlling processes. The GSP postulates ... -
Mixed-stock analysis of Atlantic herring (Clupea harengus): a tool for identifying management units and complex migration dynamics
Bekkevold, Dorte; Berg, Florian; Polte, Patrick; Bartolino, Valerio; Ojaveer, Henn; Mosegaard, Henrik; Farrell, Edward D.; Fedotova, Jelena; Hemmer-Hansen, Jakob; Huwer, Bastian; Trijoulet, Vanessa; Moesgaard Albertsen, Christoffer; Fuentes-Pardo, Angela P.; Gröhsler, Tomas; Pettersson, Mats; Jansen, Teunis; Folkvord, Arild; Andersson, Leif (Journal article; Peer reviewed, 2023)We developed and validated a mixed-stock analysis (MSA) method with 59 single-nucleotide polymorphisms selected from genome-wide data to assign individuals to populations in mixed-stock samples of Atlantic herring from the ... -
Moderate nucleotide diversity in the Atlantic herring is associated with a low mutation rate
Feng, Chungang; Pettersson, Mats; Lamichhaney, Sangeet; Rubin, Carl-Johan; Rafati, Nima; Casini, Michele; Folkvord, Arild; Andersson, Leif (Peer reviewed; Journal article, 2017-06-30)The Atlantic herring is one of the most abundant vertebrates on earth but its nucleotide diversity is moderate (π = 0.3%), only three-fold higher than in human. Here, we present a pedigree-based estimation of the mutation ... -
The pantophysin gene and its relationship with survival in early life stages of Atlantic cod: Pantophysin in Atlantic cod
Otterå, Håkon Magne; Johansen, Torild; Folkvord, Arild; Dahle, Geir; Bingh, Marte Kristine Solvang; Westgaard, Jon-Ivar; Glover, Kevin (Journal article; Peer reviewed, 2020)Genetic markers are widely used in fisheries management around the world. While the genetic structure and markers selected are usually based on samples from the wild, very few controlled experiments have been carried out ... -
Quantitative molecular detection of larval Atlantic herring (Clupea harengus) in stomach contents of Atlantic mackerel (Scomber scombrus) marks regions of predation pressure
Allen, Bridie; Ray, Jessica Louise; Tiedemann, Maik; Komyakova, Valeriya; Vikebø, Frode Bendiksen; Skaar, Katrine Sandnes; Stiasny, Martina H.; Folkvord, Arild; Nash, Richard David Marriott; Stenevik, Erling Kåre; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2021)Mortality rates in the early life-history stages of fishes are generally high yet identifying the causes remain unclear. Faltering recruitment rates of Atlantic herring (Clupea harengus) in the Norwegian Sea indicate a ... -
Reconstruction of the birth of a male sex chromosome present in Atlantic herring
Rafati, Nima; Chen, Junfeng; Herpin, Amaury; Pettersson, Mats; Han, Fan; Feng, Chungang; Wallerman, Ola; Rubin, Carl-Johan; Péron, Sandrine; Cocco, Arianna; Larsson, Mårten; Trötschel, Christian; Poetsch, Ansgar; Korsching, Kai; Bönigk, Wolfgang; Körschen, Heinz G.; Berg, Florian; Folkvord, Arild; Benjamin Kaupp, Kaupp; Schartl, Manfred; Andersson, Leif (Journal article; Peer reviewed, 2020)The mechanisms underlying sex determination are astonishingly plastic. Particularly the triggers for the molecular machinery, which recalls either the male or female developmental program, are highly variable and have ... -
Recurrent convergent evolution at amino acid residue 261 in fish rhodopsin
Hill, Jason; Enbody, Erik D.; Pettersson, Mats E.; Sprehn, C. Grace; Bekkevold, Dorte; Folkvord, Arild; Laikre, Linda; Kleinau, Gunnar; Scheerer, Patrick; Andersson, Leif (Peer reviewed; Journal article, 2019)The evolutionary process that occurs when a species colonizes a new environment provides an opportunity to explore the mechanisms underlying genetic adaptation, which is essential knowledge for understanding evolution and ... -
Respiration rates of herring larvae at different salinities and effects of previous environmental history
Berg, Florian; Andersson, Leif; Folkvord, Arild (Journal article; Peer reviewed, 2020)Metabolic rates of early life history stages of marine fishes show considerable inter-individual differences and are highly influenced by extrinsic factors like temperature or food availability. Measuring oxygen uptake ... -
Timing and selectivity of mortality in reared Atlantic cod revealed by otolith analysis
Folkvord, Arild; Koedijk, Roland M.; Lokøy, Vibeke; Imsland, Albert K. (Peer reviewed; Journal article, 2010-11-03)In juvenile fish production, large samples of known-aged material can be sampled at pre-determined time intervals from the same population. This enables an accurate determination of size-selective mortality by means of ... -
Tracking oocyte development and the timing of skipped spawning for north-east Arctic haddock (Melanogrammus aeglefinus)
Tronbøl, Frida; Johannesen, Edda; Alix, Maud; dos Santos Schmidt, Thassya Christina; Charitonidou, Katerina; Folkvord, Arild; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2022)The present study tracked oocyte development over 9 months and noted incidences of ‘skipping’, i.e., adults terminating their upcoming reproductive cycle, in field-caught north-east Arctic (NEA) haddock (Melanogrammus ... -
Trade-offs between growth and reproduction in wild Atlantic cod
Folkvord, Arild; Jørgensen, Christian; Korsbrekke, Knut; Nash, Richard David Marriott; Nilsen, Trygve; Skjæraasen, Jon Egil (Peer reviewed; Journal article, 2014-04-08)Animals partition and trade off their resources between competing needs such as growth, maintenance, and reproduction. Over a lifetime, allocation strategies should result in distinct trajectories for growth, survival, and ...