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CIRI-CIRI FIZIKOKIMIA DAN KEFUNGSIAN SISTEM HIDROKOLLOID YANG MENGANDUNGI ?COACERVATE? LENDIR DAUN KAKTUS MAWAR (Pereskia bleo)-PROTEIN DI DALAM EMULSI MINUMAN BERORIENTASIKAN DISFAGIA
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In Vitro Culture of Glochidia and Morphological Changes in Juveniles of the Endangered Freshwater Mussel Solenaia oleivora
No full textThe artificial propagation of the endangered Solenaia oleivora, with unknown fish hosts, was
performed via in vitro culture with bighead carp, grass carp, common carp, bovine, and rabbit sera.
The effects of glochidium density on transformation rates were evaluated, and the development of
juveniles that metamorphosed successfully was documented. The control group had a transformation
rate of 0 and a contamination rate of 0. No significant differences were found in the transformation
and contamination rates of the bighead carp, grass carp, and common carp serum groups, and
their transformation rates were significantly higher, and contamination rates were significantly
lower than those of the bovine and rabbit serum groups. Moreover, no significant differences were
observed in the transformation rates of glochidia (culture density, 2000?5000 glochidia/dish) in
contamination-free conditions. Specimen shell length/height increased from 1.08 ? 0.01 on the first
day to 3.08 ? 0.29 during the 13th week. On the basis of anterior and posterior growth differences,
juvenile growth was divided into the following three phases: the rapid anterior growth period,
distinct anterior and posterior idiophase, and rapid posterior growth period. This study not only
provides technological support for the artificial propagation of S. oleivora but also lays a foundation
for resource recover
A systematic review of deliberation research in marine and coastal case studies
No full textDeliberation is an important concept in marine and coastal systems research
because it is a key feature of many practical governance approaches such as
participatory management, co-management, Integrated Coastal Zone
Management, and Marine Spatial Planning. However, the research trends on
deliberation have yet to be fully reviewed and evaluated to assess future
opportunities and knowledge gaps in the field. In this article, we systematically
review the literature to provide evidence on deliberation in marine and coastal
governance systems. We review 187 case studies from peer-reviewed articles
worldwide, guided by three areas of inquiry: (1) how deliberation is applied to
frame the problem of the case studies, (2) methodologies used to evaluate and
design deliberation processes, and (3) recommendations to increase the
effectiveness of deliberation processes. Findings indicate there is uneven
spatial distribution of studies between the global north and the global south.
Most case studies used deliberation to develop recommendations related to
participatory governance and most of the researchers actively participated to
solve real-world problems by creating a deliberation process. In addition to that,
recommendations from case studies indicate deliberation processes can provide
a framework to enhance participatory governance/management and sciencepolicy
integration. Finally, we discuss the implications of the findings to guide
continued research and practice engaged with deliberation activities. Our
systematic review provides a foundational baseline for understanding the
research trends on deliberation in marine and coastal governance systems.
The findings of this review are relevant for future researchers and practitioners
who consider deliberation as an essential element of participatory approaches in
natural resource governance, especially in marine and coastal sectors
Correlation between metabolomic profile and proliferation of Macrobrachium rosenbergii primary embryonic cell culture
No full textDespite extensive research spanning several decades, a commercial cell line for
prawns remains elusive, and we have yet to determine the ideal conditions
required for successful in vitro cell cultures of crustaceans. This study marks the
first application of mass spectrometry to analyze lipid content changes in prawn
culture media, allowing us to investigate how specific metabolites in media
correlate with cell cycle and proliferation status. To investigate these
relationships, short-term cell culture experiments were conducted using three
commercial media: Dulbecco's modified eagle medium (DMEM) high glucose,
Opti-Minimal essential media (Opti-MEM), and DMEM:F12. We monitored
metabolic activity, performed cell-cycle analysis, and used mass spectrometry
to analyze lipid metabolic profiles of culture media. This comprehensive
approach enables us to examine the interplay between media lipidomic
content and cellular behavior. Our results revealed that all three media
sustained cellular metabolic activity. DMEM high glucose and Opti-MEM
showed peaks in metabolic activity at day 4, while DMEM:F12 exhibited a peak
at day 7. Opti-MEM supported the shortest doubling time, making it ideal for
short-term culture. Interestingly
Cost-benefit analysis of ballast water treatment for three major port clusters in China: evaluation of different scenario strategies
No full textThe expansion of maritime trade has led to the introduction of
invasive species into aquatic ecosystems through ballast water discharge. China,
being a major player in global trade and manufacturing, has experienced negative
impacts on its coastal ecosystems and marine biodiversity. Policymakers are advised to adopt a comprehensive view of ballast
water management policies, taking into account the trade-offs between
compliance costs and environmental risk
Estimating Spatiotemporal Fishing Effort of Trawlers with Vessel-Monitoring System Data: A Case Study of the Sea Area of the Bohai Sea and the Yellow Sea, China
No full textMeasuring the distribution of the fishing effort of trawlers is of great significance for describing
marine fishery activities, quantifying fishing systems in terms of marine ecological pressure,
and revising the regulations of fishing. The purpose of this paper is to develop an efficient learning
algorithm to detect the fishing behavior of trawlers to analyze the distribution of fishing effort. The
vessel-monitoring system data of more than 4600 trawlers from September 2019 to April 2023 were
used for feature extraction. According to the spatiotemporal information provided by the vessel
position data, 11-dimensional features were extracted to form the feature vectors. A Slime Mould
Algorithm-optimized Light Gradient-Boosting Machine (SMA-LightGBM) algorithm was proposed to
classify the feature vectors to recognize fishing behavior. The presented method showed a remarkable
generalization ability and high accuracy, sensitivity, specificity, and Matthews correlation coefficient
in the test results, with scores of 98.23%, 98.75%, 97.75%, and 0.9646, respectively. Subsequently, the
trained model was used to identify the fishing behavior of trawlers belonging to the coastal provinces
of the Bohai Sea and the Yellow Sea in the sea area of 117? E?132? E, 26? N?41? N. The fishing
effort was calculated and evaluated according to the fishing behavior recognition results. The mean
absolute error was 0.3031 kW?h, and the coefficient of determination score was 0.9772. The thermal
map of the fishing effort of the trawler was mapped, and the spatiotemporal characteristics were
estimated in the region of interest from 2019 to 2023 with a spatial resolution of 18
degree ? 18
degree.
This method is an efficient way of analyzing the spatiotemporal characteristics of the fishing effort
of trawlers. It provides a quantitative basis for the assessment of fishery resources and can inform
fishing policies
Using ecosystem models to inform ecosystem-based ?sheries management in Europe: a review of the policy landscape and related stakeholder needs
No full textThe need to implement an ecosystem-based ?sheries management (EBFM) is enshrined in numerous regulations and strategies, at both global and European level. In practice, it is challenging to implement EBFM because it requires a complex evaluation of interlinked management effects and environmental and climate forcing on multi-species interactions, habitat status and human activities. Ecosystem models are one of the most critical research tools to inform EBFM, because they can integrate a wide variety of data, examine multiple and complex ecosystem interactions, and can make forecasts based on speci?c management scenarios. However, despite clear progress in marine ecosystem modelling, many models do not address policy goals and targets, which hinders uptake in policy. In this paper, we review the global and European policies and implementing bodies which directly or indirectly have a repercussion on the implementation of EBFM. Moreover, we highlight speci?c stakeholder needs related to the implementation of EBFM in European waters, which ecosystem models could help address. We review the policy commitments that drive these needs and the concerns raised by stakeholders during a survey and dedicated workshop. Key topics of concern were effects of climate change; bycatch; protected areas/?sheries restricted areas; and reducing the impacts of trawling. Stakeholders also provided speci?c questions related to these topics which ecosystem models could help address. Scenario and data results visualizations, as well as speci?c barriers in using the results of ecosystem models for decision-making are also discussed. A close involvement of stakeholders in scenario development and in designing graphical outputs is important, and can help overcome some of the main barriers that can hinder uptake of models and scenarios, including a lack of understanding of the bene?ts and limits of ecosystem models; insuf?cient involvement and interaction with stakeholders; and inadequate characterization of uncertainties