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  • 1
    Online Resource
    Online Resource
    Temperature tolerance and energetics: a dynamic energy budget-based comparison of North Atlantic marine species
    The Royal Society ; 2010
    In:  Philosophical Transactions of the Royal Society B: Biological Sciences Vol. 365, No. 1557 ( 2010-11-12), p. 3553-3565
    Details
    In: Philosophical Transactions of the Royal Society B: Biological Sciences, The Royal Society, Vol. 365, No. 1557 ( 2010-11-12), p. 3553-3565
    Abstract: Temperature tolerance and sensitivity were examined for some North Atlantic marine species and linked to their energetics in terms of species-specific parameters described by dynamic energy budget (DEB) theory. There was a general lack of basic information on temperature tolerance and sensitivity for many species. Available data indicated that the ranges in tolerable temperatures were positively related to optimal growth temperatures. However, no clear relationships with temperature sensitivity were established and no clear differences between pelagic and demersal species were observed. The analysis was complicated by the fact that for pelagic species, experimental data were completely absent and even for well-studied species, information was incomplete and sometimes contradictory. Nevertheless, differences in life-history strategies were clearly reflected in parameter differences between related species. Two approaches were used in the estimation of DEB parameters: one based on the assumption that reserve hardly contributes to physical volume; the other does not make this assumption, but relies on body-size scaling relationships, using parameter values of a generalized animal as pseudo-data. Temperature tolerance and sensitivity seemed to be linked with the energetics of a species. In terms of growth, relatively high temperature optima, sensitivity and/or tolerance were related to lower relative assimilation rates as well as lower maintenance costs. Making the step from limited observations to underlying mechanisms is complicated and extrapolations should be carefully interpreted. Special attention should be devoted to the estimation of parameters using body-size scaling relationships predicted by the DEB theory.
    Type of Medium: Online Resource
    ISSN: 0962-8436 , 1471-2970
    URL: Article
    DOI: 10.1098/rstb.2010.0049
    RVK:
    WA 15000
    Language: English
    Publisher: The Royal Society
    Publication Date: 2010
    detail.hit.zdb_id: 1462620-2
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    The costs and trade‐offs of optimal foraging in marine fish larvae
    Wiley ; 2023
    In:  Journal of Animal Ecology Vol. 92, No. 5 ( 2023-05), p. 1016-1028
    Details
    In: Journal of Animal Ecology, Wiley, Vol. 92, No. 5 ( 2023-05), p. 1016-1028
    Abstract: In a warming world, both the metabolic rates of ectotherm predators and the phenology of their prey organisms is subject to change. Knowledge on how intrinsic and extrinsic factors govern predator–prey interactions is essential in order to understand how the environment regulates the vital rates of consumers. Controlled experiments, however, simultaneously testing behavioural and growth responses of the larvae of fish and other ectotherm organisms in different feeding regimes are scarce. Prey size ( PS ) selection was determined for young Atlantic herring Clupea harengus L. larvae offered 100‐ to 850‐μm copepods Acartia tonsa at five different concentrations. In separate, 4‐ (13°C) or 7‐day (7°C) trials, the effect of prey size on larval foraging behaviour, specific growth rate ( SGR ) and biochemical condition (RNA:DNA, RD , a proxy for individual instantaneous growth) was tested. Preferred (selected) PS was similar at all prey concentrations but increased from 3% to 5% predator length with increasing larval size. At various temperatures, dome‐shaped relationships existed between PS and larval RD (and accordingly SGR ). Compensatory changes in foraging behaviour (pause and feeding strike frequencies) existed but were not adequate to maintain positive SGR when available prey were substantially smaller than those preferred by larvae. A physiology‐based model predicted that larvae depended more heavily on optimal prey sizes at the colder versus warmer temperature to grow well and that the profitable prey niche breadth (the range in prey sizes in which growth was positive) increased at warmer temperatures. Seemingly subtle match‐mismatch dynamics between ectotherm predators and their preferred prey size can have large, temperature‐dependent consequences for rates of growth and likely survival of the predator. To the best knowledge, this was the first study to directly quantify the “costs and trade‐offs” of optimal foraging in marine fish larvae.
    Type of Medium: Online Resource
    ISSN: 0021-8790 , 1365-2656
    URL: Issue
    URL: Article
    DOI: 10.1111/jane.v92.5
    DOI: 10.1111/1365-2656.13915
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2006616-8
    SSG: 12
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  • 3
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    Online Resource
    Post-metamorphic carry-over effects of altered thyroid hormone level and developmental temperature: physiological plasticity and body condition at two life stages in Rana temporaria
    Springer Science and Business Media LLC ; 2020
    In:  Journal of Comparative Physiology B Vol. 190, No. 3 ( 2020-05), p. 297-315
    Details
    In: Journal of Comparative Physiology B, Springer Science and Business Media LLC, Vol. 190, No. 3 ( 2020-05), p. 297-315
    Abstract: Environmental stress induced by natural and anthropogenic processes including climate change may threaten the productivity of species and persistence of populations. Ectotherms can potentially cope with stressful conditions such as extremes in temperature by exhibiting physiological plasticity. Amphibian larvae experiencing stressful environments display altered thyroid hormone (TH) status with potential implications for physiological traits and acclimation capacity. We investigated how developmental temperature ( T dev ) and altered TH levels (simulating proximate effects of environmental stress) influence the standard metabolic rate (SMR), body condition (BC), and thermal tolerance in metamorphic and post-metamorphic anuran larvae of the common frog ( Rana temporaria ) reared at five constant temperatures (14–28 °C). At metamorphosis, larvae that developed at higher temperatures had higher maximum thermal limits but narrower ranges in thermal tolerance. Mean CT max was 37.63 °C ± 0.14 (low TH), 36.49 °C ± 0.31 (control), and 36.43 °C ± 0.68 (high TH) in larvae acclimated to different temperatures. Larvae were able to acclimate to higher T dev by adjusting their thermal tolerance, but not their SMR, and this effect was not impaired by altered TH levels. BC was reduced by 80% (metamorphic) and by 85% (post-metamorphic) at highest T dev . The effect of stressful larval conditions (i.e., different developmental temperatures and, to some extent, altered TH levels) on SMR and particularly on BC at the onset of metamorphosis was carried over to froglets at the end of metamorphic climax. This has far reaching consequences, since body condition at metamorphosis is known to determine metamorphic success and, thus, is indirectly linked to individual fitness in later life stages.
    Type of Medium: Online Resource
    ISSN: 0174-1578 , 1432-136X
    URL: Article
    DOI: 10.1007/s00360-020-01271-8
    RVK:
    WA 15000
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2020
    detail.hit.zdb_id: 231245-1
    detail.hit.zdb_id: 1459302-6
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  • 4
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    Online Resource
    Thermal impacts on the growth, development and ontogeny of critical swimming speed in Atlantic herring larvae
    Elsevier BV ; 2016
    In:  Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology Vol. 197 ( 2016-07), p. 23-34
    Details
    In: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, Elsevier BV, Vol. 197 ( 2016-07), p. 23-34
    Type of Medium: Online Resource
    ISSN: 1095-6433
    URL: Article
    DOI: 10.1016/j.cbpa.2016.02.020
    RVK:
    WA 15000
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2016
    detail.hit.zdb_id: 1481599-0
    SSG: 12
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  • 5
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    Online Resource
    Short-term molecular and physiological responses to heat stress in neritic copepods Acartia tonsa and Eurytemora affinis
    Elsevier BV ; 2017
    In:  Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology Vol. 203 ( 2017-01), p. 348-358
    Details
    In: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, Elsevier BV, Vol. 203 ( 2017-01), p. 348-358
    Type of Medium: Online Resource
    ISSN: 1095-6433
    URL: Article
    DOI: 10.1016/j.cbpa.2016.11.001
    RVK:
    WA 15000
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2017
    detail.hit.zdb_id: 1481599-0
    SSG: 12
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  • 6
    Online Resource
    Online Resource
    Climate risk to European fisheries and coastal communities
    Proceedings of the National Academy of Sciences ; 2021
    In:  Proceedings of the National Academy of Sciences Vol. 118, No. 40 ( 2021-10-05)
    Details
    In: Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 118, No. 40 ( 2021-10-05)
    Abstract: With the majority of the global human population living in coastal regions, correctly characterizing the climate risk that ocean-dependent communities and businesses are exposed to is key to prioritizing the finite resources available to support adaptation. We apply a climate risk analysis across the European fisheries sector to identify the most at-risk fishing fleets and coastal regions and then link the two analyses together. We employ an approach combining biological traits with physiological metrics to differentiate climate hazards between 556 populations of fish and use these to assess the relative climate risk for 380 fishing fleets and 105 coastal regions in Europe. Countries in southeast Europe as well as the United Kingdom have the highest risks to both fishing fleets and coastal regions overall, while in other countries, the risk-profile is greater at either the fleet level or at the regional level. European fisheries face a diversity of challenges posed by climate change; climate adaptation, therefore, needs to be tailored to each country, region, and fleet’s specific situation. Our analysis supports this process by highlighting where and what adaptation measures might be needed and informing where policy and business responses could have the greatest impact.
    Type of Medium: Online Resource
    ISSN: 0027-8424 , 1091-6490
    URL: Article
    DOI: 10.1073/pnas.2018086118
    RVK:
    TA 1000
    RVK:
    WA 15000
    Language: English
    Publisher: Proceedings of the National Academy of Sciences
    Publication Date: 2021
    detail.hit.zdb_id: 209104-5
    detail.hit.zdb_id: 1461794-8
    SSG: 11
    SSG: 12
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