ORCID Profile
0000-0002-3026-9225
Current Organisations
Norwegian Institute for Water Research
,
University of Agder
,
Tsinghua University
,
University of Hamburg
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Publisher: Springer Science and Business Media LLC
Date: 04-12-2022
DOI: 10.1007/S11160-022-09739-2
Abstract: Understanding the drivers behind fluctuations in fish populations remains a key objective in fishery science. Our predictive capacity to explain these fluctuations is still relatively low, due to the amalgam of interacting bottom-up and top-down factors, which vary across time and space among and within populations. Gaining a mechanistic understanding of these recruitment drivers requires a holistic approach, combining field, experimental and modelling efforts. Here, we use the Western Baltic Spring-Spawning (WBSS) herring ( Clupea harengus ) to exemplify the power of this holistic approach and the high complexity of the recruitment drivers (and their interactions). Since the early 2000s, low recruitment levels have promoted intense research on this stock. Our literature synthesis suggests that the major drivers are habitat compression of the spawning beds (due to eutrophication and coastal modification mainly) and warming, which indirectly leads to changes in spawning phenology, prey abundance and predation pressure. Other factors include increased intensity of extreme climate events and new predators in the system. Four main knowledge gaps were identified related to life-cycle migration and habitat use, population structure and demographics, life-stage specific impact of multi-stressors, and predator–prey interactions. Specific research topics within these areas are proposed, as well as the priority to support a sustainable management of the stock. Given that the Baltic Sea is severely impacted by warming, eutrophication and altered precipitation, WBSS herring could be a harbinger of potential effects of changing environmental drivers to the recruitment of small pelagic fishes in other coastal areas in the world. Graphical abstract
Publisher: Elsevier BV
Date: 06-2020
Publisher: Public Library of Science (PLoS)
Date: 02-06-2015
Publisher: Elsevier BV
Date: 07-2016
DOI: 10.1016/J.CBPA.2016.02.020
Abstract: Increases in swimming ability have a profound influence on larval fish growth and survival by increasing foraging success, predator avoidance and the ability to favorably influence transport. Understanding how development and environmental factors combine to influence swimming performance in aquatic organisms is particularly important during the transition from viscous to inertial environments. We measured the growth, development and ontogenetic changes in critical swimming speed (Ucrit) in Atlantic herring (Clupea harengus) larvae reared at three temperatures (7, 11, 15°C). Temperature had a significant effect on growth rates (from 0.21 at 7°C to 0.34mm·d(-1) at 15°C), and larval morphology-at-length (increased dry weight (DW), body height and developmental rate at warmer temperatures). Temperature-dependent differences in morphology influenced swimming performance (e.g. the exponential increase in Ucrit with increasing body size was faster at warmer temperatures). Larvae entered the transition to an inertial environment (Reynolds numbers ≥300) at body lengths between 15 (15°C) and 17mm (7°C). Inter-in idual differences in Ucrit were not related to nutritional condition (RNA·DNA(-1) or DNA·DW(-1)), but were negatively correlated to length-at-age, suggesting a trade-off between growth rate and locomotor activity. The Ucrit data from this and previously published studies suggest that Atlantic herring pass through four activity phases: 1) yolk-sac (<0.6cm·s(-1)), 2) pre-flexion (0.6-3.0cm·s(-1), temperature effect changes with body size), 3) post-flexion (up to 6-8cm·s(-1), Q10~1.8-2.0), 4) juvenile-adult period (20-170cm·s(-1)).
Publisher: Research Square Platform LLC
Date: 31-05-2022
DOI: 10.21203/RS.3.RS-1686675/V1
Abstract: The number of colors in fluorescence microscopy is far less than the types of intracellular compartments, bringing gaps in studying live-cell anatomy and multiple organelles’ interactions. Here, we report that super-resolution imaging in association with deep convolutional neuronal networks can predict 15 subcellular structures at 91.7% pixel accuracy using one laser excitation and two detection channels. It not only bypasses the limitations of multi-color imaging with single dye labeling but also accelerates the imaging speed by more than one order of magnitude. We find that the super-resolution ratiometric images well reflect the heterogeneity of organelles as the intrinsic “optical fingerprint” and the neuronal networks can be generalized with transfer learning to predict both 3D and 2D datasets from different microscopes, different cell types, and even complexed system of living tissues. It enables us to resolve the 3D anatomic structure of live cells at different mitotic phases and to track down the fast dynamic interactions among 9 intracellular compartments.
Publisher: Elsevier BV
Date: 02-2016
DOI: 10.1016/J.MARENVRES.2015.12.007
Abstract: Projected, climate-driven changes in rainfall patterns are expected to alter the salinity (S) of estuaries and larger brackish water bodies, such as the Baltic Sea. Some marine fish larvae are potentially more sensitive to low salinity than older stages, hence we compared the low salinity tolerance of Atlantic herring (Clupea harengus) larvae at the in idual and population levels including four populations in the North and Baltic Seas. Acute low salinity tolerance was similar (S = 1.9-2.7) across populations and increased with increasing body size. Based on this physiological threshold and a regionally down-scaled climate model, spawning habitats in the northern and eastern Baltic Sea are projected to be largely unsuitable for herring by 2100. Although adaptive mechanisms may attenuate the effect in some species, the limited physiological tolerance of fish larvae will remain an important bottleneck for the persistence of marine fish populations in brackish waters undergoing climate-driven freshening.
Publisher: Elsevier BV
Date: 02-2018
Publisher: The Company of Biologists
Date: 05-2022
DOI: 10.1242/JEB.243802
Abstract: European sea bass (Dicentrarchus labrax) is a large, economically important fish species with a long generation time whose long-term resilience to ocean acidification (OA) and warming (OW) is not clear. We incubated sea bass from Brittany (France) for two generations (& years in total) under ambient and predicted OA conditions (PCO2: 650 and 1700 µatm) crossed with ambient and predicted OW conditions in F1 (temperature: 15–18°C and 20–23°C) to investigate the effects of climate change on larval and juvenile growth and metabolic rate. We found that in F1, OA as a single stressor at ambient temperature did not affect larval or juvenile growth and OW increased developmental time and growth rate, but OAW decreased larval size at metamorphosis. Larval routine and juvenile standard metabolic rate were significantly lower in cold compared with warm conditioned fish and also lower in F0 compared with F1 fish. We did not find any effect of OA as a single stressor on metabolic rate. Juvenile PO2,crit was not affected by OA or OAW in both generations. We discuss the potential underlying mechanisms resulting in the resilience of F0 and F1 larvae and juveniles to OA and in the beneficial effects of OW on F1 larval growth and metabolic rate, but contrastingly in the vulnerability of F1, but not F0 larvae to OAW. With regard to the ecological perspective, we conclude that recruitment of larvae and early juveniles to nursery areas might decrease under OAW conditions but in iduals reaching juvenile phase might benefit from increased performance at higher temperatures.
Publisher: Springer Science and Business Media LLC
Date: 08-02-2015
Publisher: Springer Science and Business Media LLC
Date: 08-11-2017
Publisher: Springer Science and Business Media LLC
Date: 18-01-2023
Location: Spain
No related grants have been discovered for Marta Moyano.