Effects of stocking density on the aquaculture performance of diploid and triploid, Pacific oyster<i>Crassostrea gigas</i>and Portuguese oyster<i>C. angulata</i>in warm water aquaculture

Tan, Karsoon; Deng, Longhui; Zheng, Huaiping

doi:10.1111/are.15489

Cited by 13 publications

(1 citation statement)

References 64 publications

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“…Second, there are four main forms of fishery carbon sink: the biomass carbon sink (also called removable carbon), dissolved organic carbon (DOC), recalcitrant DOC (RDOC), particulate organic carbon (POC) (Liu et al, 2022;Pessarrodona et al, 2023). However, the release of particulate organic carbon (POC) and dissolved organic carbon (DOC) during the growth of shellfish and algae are always neglected and excluded in previous studies (Ren, 2021;Gu et al, 2022;Lai et al, 2022;Hao et al, 2024;Tan et al, 2024). It is crucial to assess the level of carbon sinks through a range of scientifically reliable indicators.…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal differences and simulation studies of the carbon budget from fisheries in the northern marine economic circle of China

Jia,

Liu,

Guan

et al. 2024

Front. Mar. Sci.

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With the proposal of dual carbon goals, enhancing carbon sinks and reducing carbon emissions has become a critical issue. Fisheries, as a component of agriculture, possess the dual attributes of being a “carbon sink” (biological carbon fixation) and a “carbon source” (the carbon emissions from fishing vessels). Therefore, it is necessary to assess the carbon sink and carbon emission levels of fisheries. The northern marine economic circle, which includes Liaoning, Hebei, Tianjin, and Shandong, is an important site for fisheries in China, characterized by abundant aquatic resources. However, a comprehensive assessment of the carbon budget for fisheries in this region is still unclear. This study calculated the carbon sinks, carbon emissions, and net carbon emissions associated with fisheries in the region from 2013 to 2020. Additionally, we used sensitivity analysis and scenario simulation to explore the factors influencing the net carbon emissions. The results revealed that the carbon budget of the northern marine economic circle was in a carbon deficit (the amount of carbon emissions was higher than that of carbon sinks) from 2013 to 2020. However, a downward trend in the net carbon emissions was observed, indicating the potential of achieving carbon neutrality. From the perspective of provinces, significant differences among provinces (cities) were found in terms of carbon sinks, carbon emissions, and net carbon emissions, with Shandong having the largest net carbon emissions. Furthermore, the production of clams and the use of seawater trawl net have a significant impact on the net carbon emissions. Increasing the production of clams while reducing the power of trawling operations can significantly decrease net carbon emissions. Based on these results, this study provides relevant suggestions to enhance the carbon sink capacity and decrease the carbon emissions of fisheries in the northern marine economic circle.

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Section: Introductionmentioning

confidence: 99%

Spatio-temporal differences and simulation studies of the carbon budget from fisheries in the northern marine economic circle of China

Jia,

Liu,

Guan

et al. 2024

Front. Mar. Sci.

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Comparative study on tetraploid induction of the Fujian oyster Crassostrea angulata utilizing three typical methods

et al. 2023

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The sterility advantages of triploids make them paramount for oyster aquaculture. Current hatcheries for triploid industrial breeding utilize tetraploids as male parents, and thus tetraploids are a core asset for triploid oyster culture. The oyster Crassostrea angulata is the most productive oyster species in China, however, the optimal conditions for tetraploid induction have never been examined. In this study, we investigated the effectiveness of three induction methods (Method , 2n × 2n + inducer abbreviated as DD + ind; Method , 3n × 2n + inducer abbreviated as TrD + ind; Method , 2n × 4n + inducer abbreviated as DT + ind) and three inducers (salinity; cytochalasin B, CB; and 6-dimethylaminopurine, 6-DMAP) for tetraploid induction in C. angulata. The optimal induction conditions for the three induction methods were a CB concentration of 0.5 mg/L treated for 20 min, 0.75 mg/L CB for a constant induction treatment of 20 min and 6-DMAP at a concentration of 100 mg/L for 20 min, respectively. When the optimal induction conditions were applied to a single pair of oysters, the D-larval tetraploid rate for the three methods were 18.93%, 58.32% and 51.61%, respectively. The survival rates of the experimental groups were only 10.36%, 28.07% and 21.99%, respectively, at day 30. The tetraploid rates for Method and Method , although decreased signi cantly over time, still reached 11.81% and 21.99% at 30 days, and 8% and 16% at 180 days of age, respectively. Tetraploid rates for Method were 58.32% − 71.28% at the larval stage and 80% at day 180. In summary, in spite of very different induction rates, viable tetraploid C. angulata can be harvested in all three methods. Method (TrD + inducer) was regarded as the optimal method to induce C. angulata tetraploids, and the optimal induction condition was a CB concentration of 0.75 mg/L and treated for 20 min under this method.

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Combined effects of temperature and salinity on larval development and metamorphosis of tetraploid Crassostrea gigas, tetraploid C. angulata and allotetraploid oysters

Jiang,

Xu,

2023

Aquacult Int

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Effects of stocking density on the aquaculture performance of diploid and triploid, Pacific oysterCrassostrea gigasand Portuguese oysterC. angulatain warm water aquaculture

Cited by 13 publications

References 64 publications

Spatio-temporal differences and simulation studies of the carbon budget from fisheries in the northern marine economic circle of China

Spatio-temporal differences and simulation studies of the carbon budget from fisheries in the northern marine economic circle of China

Comparative study on tetraploid induction of the Fujian oyster Crassostrea angulata utilizing three typical methods

Combined effects of temperature and salinity on larval development and metamorphosis of tetraploid Crassostrea gigas, tetraploid C. angulata and allotetraploid oysters

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