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  • 1
    Online Resource
    Online Resource
    Life in the fast lane: Revisiting the fast growth—High survival paradigm during the early life stages of fishes
    Wiley ; 2023
    In:  Fish and Fisheries Vol. 24, No. 5 ( 2023-09), p. 863-888
    Details
    In: Fish and Fisheries, Wiley, Vol. 24, No. 5 ( 2023-09), p. 863-888
    Abstract: 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 that recruitment depends on growth and mortality rates during early life stages, as well as their duration, after which the mortality declines substantially. The GSP predicts a shift in the frequency distribution of growth histories with age towards faster growth rates relative to the initial population because slow‐growing individuals are subject to high mortality (via starvation and predation). However, mortality data compiled from 387 cases published in 153 studies (1971–2022) showed that the GSP was only supported in 56% of cases. Selection against slow growth occurred in two‐thirds of field studies, leaving a non‐negligible fraction of cases showing either an absence of or inverse growth‐selective survival, suggesting the growth‐survival relationship is more complex than currently considered within the GSP framework. Stochastic simulations allowed us to assess the influence of key intrinsic and extrinsic factors on the characteristics of surviving larvae and identify knowledge gaps on the drivers of variability in growth‐selective survival. We suggest caution when interpreting patterns of growth selection because changes in variance and autocorrelation of individual growth rates among cohorts can invalidate fundamental GSP assumptions. We argue that breakthroughs in recruitment research require a comprehensive, population‐specific characterization of the role of predation and intrinsic factors in driving variability in the distribution and autocorrelation of larval growth rates, and of the life stage corresponding to the endpoint of pre‐recruited life.
    Type of Medium: Online Resource
    ISSN: 1467-2960 , 1467-2979
    URL: Issue
    URL: Article
    DOI: 10.1111/faf.v24.5
    DOI: 10.1111/faf.12774
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2024569-5
    SSG: 21,3
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  • 2
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    Online Resource
    Critically examining the knowledge base required to mechanistically project climate impacts: A case study of Europe's fish and shellfish
    Wiley ; 2019
    In:  Fish and Fisheries Vol. 20, No. 3 ( 2019-05), p. 501-517
    Details
    In: Fish and Fisheries, Wiley, Vol. 20, No. 3 ( 2019-05), p. 501-517
    Abstract: An amalgam of empirical data from laboratory and field studies is needed to build robust, theoretical models of climate impacts that can provide science‐based advice for sustainable management of fish and shellfish resources. Using a semi‐systematic literature review, Gap Analysis and multilevel meta‐analysis, we assessed the status of empirical knowledge on the direct effects of climate change on 37 high‐value species targeted by European fisheries and aquaculture sectors operating in marine and freshwater regions. Knowledge on potential climate change‐related drivers (single or combined) on several responses (vital rates) across four categories (exploitation sector, region, life stage, species), was considerably unbalanced as well as biased, including a low number of studies (a) examining the interaction of abiotic factors, (b) offering opportunities to assess local adaptation, (c) targeting lower‐value species. The meta‐analysis revealed that projected warming would increase mean growth rates in fish and mollusks and significantly elevate metabolic rates in fish. Decreased levels of dissolved oxygen depressed rates of growth and metabolism across coherent species groups (e.g., small pelagics, etc.) while expected declines in pH reduced growth in most species groups and increased mortality in bivalves. The meta‐analytical results were influenced by the study design and moderators (e.g., life stage, season). Although meta‐analytic tools have become increasingly popular, when performed on the limited available data, these analyses cannot grasp relevant population effects, even in species with a long history of study. We recommend actions to overcome these shortcomings and improve mechanistic (cause‐and‐effect) projections of climate impacts on fish and shellfish.
    Type of Medium: Online Resource
    ISSN: 1467-2960 , 1467-2979
    URL: Issue
    URL: Article
    DOI: 10.1111/faf.2019.20.issue-3
    DOI: 10.1111/faf.12359
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2024569-5
    SSG: 21,3
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  • 3
    Online Resource
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    Solutions for ecosystem‐level protection of ocean systems under climate change
    Wiley ; 2016
    In:  Global Change Biology Vol. 22, No. 12 ( 2016-12), p. 3927-3936
    Details
    In: Global Change Biology, Wiley, Vol. 22, No. 12 ( 2016-12), p. 3927-3936
    Abstract: The Paris Conference of Parties ( COP 21) agreement renewed momentum for action against climate change, creating the space for solutions for conservation of the ocean addressing two of its largest threats: climate change and ocean acidification ( CCOA ). Recent arguments that ocean policies disregard a mature conservation research field and that protected areas cannot address climate change may be oversimplistic at this time when dynamic solutions for the management of changing oceans are needed. We propose a novel approach, based on spatial meta‐analysis of climate impact models, to improve the positioning of marine protected areas to limit CCOA impacts. We do this by estimating the vulnerability of ocean ecosystems to CCOA in a spatially explicit manner and then co‐mapping human activities such as the placement of renewable energy developments and the distribution of marine protected areas. We test this approach in the NE Atlantic considering also how CCOA impacts the base of the food web which supports protected species, an aspect often neglected in conservation studies. We found that, in this case, current regional conservation plans protect areas with low ecosystem‐level vulnerability to CCOA , but disregard how species may redistribute to new, suitable and productive habitats. Under current plans, these areas remain open to commercial extraction and other uses. Here, and worldwide, ocean conservation strategies under CCOA must recognize the long‐term importance of these habitat refuges, and studies such as this one are needed to identify them. Protecting these areas creates adaptive, climate‐ready and ecosystem‐level policy options for conservation, suitable for changing oceans.
    Type of Medium: Online Resource
    ISSN: 1354-1013 , 1365-2486
    URL: Issue
    URL: Article
    DOI: 10.1111/gcb.2016.22.issue-12
    DOI: 10.1111/gcb.13423
    Language: English
    Publisher: Wiley
    Publication Date: 2016
    detail.hit.zdb_id: 2020313-5
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  • 4
    Online Resource
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    Coupling ecosystem and individual-based models to simulate the influence of environmental variability on potential growth and survival of larval sprat ( Sprattus sprattus L.) in the North Sea
    Wiley ; 2008
    In:  Fisheries Oceanography Vol. 17, No. 5 ( 2008-09), p. 333-351
    Details
    In: Fisheries Oceanography, Wiley, Vol. 17, No. 5 ( 2008-09), p. 333-351
    Type of Medium: Online Resource
    ISSN: 1054-6006 , 1365-2419
    URL: Issue
    URL: Article
    DOI: 10.1111/fog.2008.17.issue-5
    DOI: 10.1111/j.1365-2419.2008.00482.x
    Language: English
    Publisher: Wiley
    Publication Date: 2008
    detail.hit.zdb_id: 1214985-8
    detail.hit.zdb_id: 2020300-7
    SSG: 21,3
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  • 5
    Online Resource
    Online Resource
    Impacts of climate change on the complex life cycles of fish
    Wiley ; 2013
    In:  Fisheries Oceanography Vol. 22, No. 2 ( 2013-03), p. 121-139
    Details
    In: Fisheries Oceanography, Wiley, Vol. 22, No. 2 ( 2013-03), p. 121-139
    Type of Medium: Online Resource
    ISSN: 1054-6006
    URL: Issue
    URL: Article
    DOI: 10.1111/fog.2013.22.issue-2
    DOI: 10.1111/fog.12010
    Language: English
    Publisher: Wiley
    Publication Date: 2013
    detail.hit.zdb_id: 1214985-8
    detail.hit.zdb_id: 2020300-7
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  • 6
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    Online Resource
    Altered thyroid hormone levels affect body condition at metamorphosis in larvae of Xenopus laevis
    Wiley ; 2018
    In:  Journal of Applied Toxicology Vol. 38, No. 11 ( 2018-11), p. 1416-1425
    Details
    In: Journal of Applied Toxicology, Wiley, Vol. 38, No. 11 ( 2018-11), p. 1416-1425
    Abstract: We studied the effects of two model thyroid hormone level affecting compounds, l ‐thyroxine and sodium perchlorate, on various measures of development and body condition in larvae of the African clawed frog ( Xenopus laevis ). The scaled mass index, hepatosomatic index and the relative tail muscle mass were calculated as body condition indices to estimate fitness. Altered thyroid hormone levels reduced survival rate, altered growth and development and improved body condition of larvae at the onset of metamorphosis.
    Type of Medium: Online Resource
    ISSN: 0260-437X , 1099-1263
    URL: Issue
    URL: Article
    DOI: 10.1002/jat.v38.11
    DOI: 10.1002/jat.3663
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 1475015-6
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  • 7
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    Disentangling seasonal from maternal effects on egg characteristics in western Baltic spring‐spawning herring Clupea harengus
    Wiley ; 2022
    In:  Journal of Fish Biology Vol. 101, No. 6 ( 2022-12), p. 1428-1440
    Details
    In: Journal of Fish Biology, Wiley, Vol. 101, No. 6 ( 2022-12), p. 1428-1440
    Abstract: In marine fishes, the timing of spawning determines the environment offspring will face and, therefore, the chances of early life stage survival. Different waves of Atlantic herring Clupea harengus spawn throughout spring in the western Baltic Sea, and the survival of offspring from early in the season has been low in the most recent decade. The authors assessed changes in egg traits from early, middle and late phases of the spawning season to examine whether seasonal and/or maternal effects influenced embryo survival. At each phase, fertilized eggs of six to eight females were incubated at two temperatures (7 and 13°C), and egg size, fertilization success, mortality and time to hatch were recorded. A compilation of data from 2017 to 2020 spawning seasons indicated that mean total length of females decreased with progression of the season and increasing in situ water temperature. For the sub‐set of females used in the laboratory study, early spawners were 7.6% larger and produced 14.2% larger eggs than late‐spring spawners. Fertilization success was consistently high ( 〉 90%), and mortality to hatch was low ( 〈 3%). Neither the former nor latter were influenced by season, but both were influenced by maternity. This significant female effect was, however, not related to any maternal trait measured here (total length, Fulton's condition factor or age). There was no maternal effect on development rate at 7 or 13°C. The results suggest that intrinsic differences among females or among spawning waves are unlikely to markedly contribute to the poor survival observed for progeny from early in the season in this population and point towards other extrinsic factors or processes acting on eggs or early larval stages ( e.g. , seasonal match–mismatch dynamics with prey) as more likely causes of mortality.
    Type of Medium: Online Resource
    ISSN: 0022-1112 , 1095-8649
    URL: Issue
    URL: Article
    DOI: 10.1111/jfb.v101.6
    DOI: 10.1111/jfb.15210
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 410564-3
    detail.hit.zdb_id: 1471958-7
    SSG: 21,3
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  • 8
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    Predation on Atlantic herring ( Clupea harengus ) eggs by the resident predator community in coastal transitional waters
    Wiley ; 2017
    In:  Limnology and Oceanography Vol. 62, No. 6 ( 2017-11), p. 2616-2628
    Details
    In: Limnology and Oceanography, Wiley, Vol. 62, No. 6 ( 2017-11), p. 2616-2628
    Abstract: Atlantic herring ( Clupea harengus ) migrates from offshore to coastal areas to spawn and their eggs and larvae may substantially increase prey resources for resident predators. We combined an in situ predator exclusion experiment using eggs naturally spawned on submerged aquatic vegetation and field observations of predator abundance to estimate the magnitude of predation mortality of herring eggs. During our predator exclusion experiment, performed in an important spawning ground in the southwest Baltic Sea, 20% of the herring eggs were consumed resulting in an extrapolated predation of 42% of all eggs between spawning and hatch. Abundance and stomach content analyses indicated that one predator (threespine stickleback, Gasterosteus aculeatus ) was responsible for the majority of the predation impact. Predation mortality estimates from this in situ study were more than 10‐fold higher than those of an empirical egg predation model for the same predator in the same region. Our findings highlight the potential of resident predators to regulate the survival of early life stages of ocean‐going fishes that rely on the nursery functions of inshore transitional waters.
    Type of Medium: Online Resource
    ISSN: 0024-3590 , 1939-5590
    URL: Issue
    URL: Article
    DOI: 10.1002/lno.v62.6
    DOI: 10.1002/lno.10594
    Language: English
    Publisher: Wiley
    Publication Date: 2017
    detail.hit.zdb_id: 2033191-5
    detail.hit.zdb_id: 412737-7
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  • 9
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    Online Resource
    Combining modeling with novel field observations yields new insights into wintertime food limitation of larval fish
    Wiley ; 2023
    In:  Limnology and Oceanography Vol. 68, No. 8 ( 2023-08), p. 1865-1879
    Details
    In: Limnology and Oceanography, Wiley, Vol. 68, No. 8 ( 2023-08), p. 1865-1879
    Abstract: Recruitment success of marine fishes is generally considered to be highly dependent on larval growth and survival. In temperate ecosystems, fish larvae are sensitive to food limitation during the low productivity seasons, particularly if water temperatures and concomitant larval metabolic costs increase due to climate change. We combined 7 years of in situ sampling of larval fish, novel observations on zooplankton via automated image analyses, and larval physiological modeling to explore feeding conditions of Atlantic herring larvae ( Clupea harengus ) in the North Sea. The observed plankton size‐structure was close to the theoretical optimum for larval foraging, but not the biomass. Our results for autumn larvae supported Hjort's critical period hypothesis: small first‐feeding larvae were predicted to have a high probability of starvation, whereas larvae  〉  13 mm were able to reach their maximal growth capacity. In winter, the majority of herring larvae of all tested sizes (5–27 cm) experienced food‐limitation with over 35% probability of starvation. Sensitivity analysis suggested that young herring larvae improve their growth performance and probability of survival if feed not only on copepods and their life‐stages but include other microplankters in their diet. Given projected warming of the North Sea, our model predicts that herring larvae would require 28% (35%) more prey biomass in autumn (winter) to sustain their growth and survival in the future. This finding together with the ongoing low recruitment of North Sea herring underscore the importance of future micro‐ and mesoplankton monitoring within a scope of wintertime larval fish surveys.
    Type of Medium: Online Resource
    ISSN: 0024-3590 , 1939-5590
    URL: Issue
    URL: Article
    DOI: 10.1002/lno.v68.8
    DOI: 10.1002/lno.12391
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2033191-5
    detail.hit.zdb_id: 412737-7
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    SSG: 14
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  • 10
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    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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