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  • 1
    Book
    Book
    32nd Annual Larval Fish Conference : Kiel, August 4-7, 2008 (2008)
    Kiel : IFM-GEOMAR
    Details Availability
    Type of Medium: Book
    Pages: 161 S
    DDC: 597/.03
    Language: English
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  • 2
    Book
    Book
    Comparison of biochemical and histological methods for the evaluation of the in situ nutritional condition of marine fish larvae (1989)
    Details Availability
    Type of Medium: Book
    Series Statement: ICES council meeting papers 1989(4)
    Language: Undetermined
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  • 3
    Book
    Book
    Improvements in the fluorimetric determination of the RNA- and DNA content in individual marine fish larvae (1990)
    Details Availability
    Type of Medium: Book
    Series Statement: ICES council meeting papers 1990(98)
    Language: Undetermined
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  • 4
    Book
    Book
    Advances in early life history study of fish (2009)
    Barcelona : Institut de Cièncias del Mar
    Details Availability
    Type of Medium: Book
    Pages: 222 S , zahlr. Ill., graph. Darst., Kt
    Series Statement: Scientia marina 73.2009,Suppl.1
    Language: English , Spanish
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  • 5
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    Food web changes under ocean acidification promote herring larvae survival (2018)
    In:  EPIC3Nature Ecology & Evolution, 2(5), pp. 836-840, ISSN: 2397-334X
    Details
    Publication Date: 2018-05-31
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 6
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    Within- and transgenerational effects of ocean acidification on life history of marine three-spined stickleback (Gasterosteus aculeatus) (2014)
    SPRINGER
    In:  EPIC3Marine Biology, SPRINGER, ISSN: 0025-3162
    Details
    Publication Date: 2014-07-21
    Description: Some studies have demonstrated that elevated CO2 concentrations in ocean waters negatively impact metabolism and development of marine fish. Particularly, early developmental stages are probably more susceptible to ocean acidification due to insufficient regulations of their acid-base balance. Transgenerational acclimation can be an important mechanism to mediate impacts of increased CO2 on marine species, yet very little is known about the potential of parental effects in teleosts. Therefore, transgenerational effects were investigated on life history in juvenile three-spined sticklebacks Gasterosteus aculeatus by acclimating parents (collected in April 2012, 55°03′N, 8°44′E) and offspring to ambient (~400 µatm) and elevated (~1,000 µatm) CO2 levels and measured parental fecundity as well as offspring survival, growth and otolith characteristics. Exposure to elevated CO2 concentrations led to an increase in clutch size in adults as well as increased juvenile survival and growth rates between 60 and 90 days post-hatch and enlarged otolith areas compared with fish from ambient CO2 concentrations. Moreover, transgenerational effects were observed in reduced survival and body size 30 days post-hatch as well as in enlarged otoliths at the end of the experiment, when fathers or both parents were acclimated to the high-CO2 environment. These results may suggest that elevated CO2 concentrations had rather positive effects on life-history traits of three-spined sticklebacks, but that parental acclimation can modify these effects without improving offspring fitness. Although the mechanistic basis of such transgenerational acclimation remains unclear, selective gradients within generations seem to determine the direction of transgenerational effects.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 7
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    Juvenile Atlantic herring (Clupea harengus) use a time-compensated sun compass for orientation (2022)
    The Company of Biologists
    In:  EPIC3Journal of Experimental Biology, The Company of Biologists, 225(18), pp. jeb244607-, ISSN: 0022-0949
    Details
    Publication Date: 2023-10-12
    Description: Atlantic herring (Clupea harengus), an ecologically and economically important species in the northern hemisphere, shows pronounced seasonal migratory behaviour. To follow distinctive migration patterns over hundreds of kilometers between feeding, overwintering and spawning grounds, they are probably guided by orientation mechanisms. We tested whether juvenile spring-spawning Atlantic herring, caught in the western Baltic, use a sun compass for orientation just before they start leaving their hatching area. Fish were randomly divided into two groups, one of them clock-shifted 6 h backwards, to investigate whether they shift their orientation direction accordingly. Individual fish were placed in a circular bowl and their orientation was tested multiple times with the sun as a sole visual orientational cue. Our results show for the first time that juvenile Atlantic herring use a time-compensated sun compass during their migration. Their swimming direction was impaired, but still present, even when the sky was very cloudy, indicating additional orientation capabilities.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
    Format: application/pdf
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  • 8
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    Immunostimulatory effects of dietary poly-β-hydroxybutyrate in European sea bass postlarvae (2017)
    Wiley
    In:  Aquaculture Research, 48 (12). pp. 5707-5717.
    Details
    Publication Date: 2020-02-06
    Description: The stable production of high-quality fry in marine aquaculture is still hampered by unpredictable mortality caused by infectious diseases during larval rearing. Consequently, the development of new biocontrol agents is crucial for a viable aquaculture industry. The bacterial energy storage compound poly-β-hydroxybutyrate (PHB) has been shown to exhibit beneficial properties on aquatic organisms such as enhanced survival, growth, disease resistance and a controlling effect on the gastrointestinal microbiota. However, the effect of PHB on the developing immune system of fish larvae has so far not been investigated. In this study, the effect of feeding PHB-enriched Artemia nauplii on survival, growth and immune response in European sea bass (Dicentrarchus labrax) postlarvae was examined. Amorphous PHB was administered to 28-day-old sea bass postlarvae over a period of 10 days. The survival and growth performance were monitored, and the expression of 29 genes involved in immunity, growth, metabolism and stress-response was measured. While the expression of the insulin-like growth factor 1 (igf1), an indicator of relative growth, was upregulated in response to feeding PHB, the larval survival and growth performance remained unaffected. After 10 days of PHB treatment, the expression of the antimicrobial peptides dicentracin (dic) and hepcidin (hep) as well as mhc class IIa and mhc class IIb was elevated in the PHB fed postlarvae. This indicates that PHB is capable of stimulating the immune system of fish early life stages, which may be the cause of the increased resistance to diseases and robustness observed in previous studies.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1111/are.13393
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 9
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    Forecasting future recruitment success for Atlantic cod in the warming and acidifying Barents Sea (2018)
    Wiley
    In:  Global Change Biology, 24 (1). pp. 526-535.
    Details
    Publication Date: 2021-02-08
    Description: Productivity of marine fish stocks is known to be affected by environmental and ecological drivers, and global climate change is anticipated to alter recruitment success of many stocks. While the direct effects of environmental drivers on fish early life stage survival can be quantified experimentally, indirect effects in marine ecosystems and the role of adaptation are still highly uncertain. We developed an integrative model for the effects of ocean warming and acidification on the early life stages of Atlantic cod in the Barents Sea, termed SCREI (Simulator of Cod Recruitment under Environmental Influences). Experimental results on temperature and CO2 effects on egg fertilization, egg and larval survival and development times are incorporated. Calibration using empirical time series of egg production, temperature, food and predator abundance reproduces age-0 recruitment over three decades. We project trajectories of recruitment success under different scenarios and quantify confidence limits based on variation in experiments. A publicly accessible web version of the SCREI model can be run under www.oceanchange.uni-bremen.de/;SCREI. Severe reductions in average age-0 recruitment success of Barents Sea cod are projected under uncompensated warming and acidification toward the middle to end of this century. Although high population stochasticity was found, considerable rates of evolutionary adaptation to acidification and shifts in organismal thermal windows would be needed to buffer impacts on recruitment. While increases in food availability may mitigate short-term impacts, an increase in egg production achieved by stock management could provide more long-term safety for cod recruitment success. The SCREI model provides a novel integration of multiple driver effects in different life stages and enables an estimation of uncertainty associated with interindividual and ecological variation. The model thus helps to advance toward an improved empirical foundation for quantifying climate change impacts on marine fish recruitment, relevant for ecosystem-based assessments of marine systems under climate change.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1111/gcb.13848
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 10
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    Food web changes under ocean acidification promote herring larvae survival (2018)
    Nature Research
    In:  Nature Ecology & Evolution, 2 . pp. 836-840.
    Details
    Publication Date: 2021-02-08
    Description: Ocean acidification—the decrease in seawater pH due to rising CO2 concentrations—has been shown to lower survival in early life stages of fish and, as a consequence, the recruitment of populations including commercially important species. To date, ocean-acidification studies with fish larvae have focused on the direct physiological impacts of elevated CO2, but largely ignored the potential effects of ocean acidification on food web interactions. In an in situ mesocosm study on Atlantic herring (Clupea harengus) larvae as top predators in a pelagic food web, we account for indirect CO2 effects on larval survival mediated by changes in food availability. The community was exposed to projected end-of-the-century CO2 conditions (~760 µatm pCO2) over a period of 113 days. In contrast with laboratory studies that reported a decrease in fish survival, the survival of the herring larvae in situ was significantly enhanced by 19 ± 2%. Analysis of the plankton community dynamics suggested that the herring larvae benefitted from a CO2-stimulated increase in primary production. Such indirect effects may counteract the possible direct negative effects of ocean acidification on the survival of fish early life stages. These findings emphasize the need to assess the food web effects of ocean acidification on fish larvae before we can predict even the sign of change in fish recruitment in a high-CO2 ocean.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1038/s41559-018-0514-6
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