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Myo-inositol accelerates the metamorphosis from megalopa to crablet of Scylla paramamosain by modulating cuticle decomposition and reconstruction

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Aquaculture and Fisheries 2023年第6期8卷 695-705页

作者： Wenxiao Cui Hafiz Sohaib Ahmed Saqib Weifeng Gao Ruibo Wang Yang He Yang Yu Zhen Lin Qingyu Zhang Yin Zhang Shengkang Li Huaiping Zheng Yueling Zhang Mhd Ikhwanuddin Hongyu Ma Guangdong Provincial Key laboratory of Marine Biotechnology Shantou UniversityShantou515063China stu-umt joint shellfish research laboratory Shantou UniversityShantou515063China Rongtong Agricultural Development(Guangzhou)Co. LtdGuangzhou510030China Institute of Tropical Aquaculture and Fisheries Universiti Malaysia TerengganuKuala Nerus21030Malaysia

The mud crab Scylla paramamosain is a key species in China due to its high nutritional value and great economic worth and has grown in popularity.Myo-inositol can modulate versatile physiological functions in aquatic animals.In the present study,S.paramamosain megalopa were given graded concentrations of myo-inositol(0,1,2,4,and 8 ppm)by water immersion to explore how their metamorphosis would be affected.The results showed that supplementing with myo-inositol remarkably increased transformation and survival rate from megalopa to crablet by at least 1.16 and 1.26 times,respectively.To decipher the molecular mechanism of how myo-inositol increases metamorphosis and survival rate,we further performed transcriptome-based gene expression profiling of both megalopa and crablet treated with myo-inositol.The integrative transcriptome analyses predicted that the differentially expressed genes(DEGs)were significantly enriched in chitinase activity,structural constituent of cuticle,and chitin binding,which are associated with the decomposition and reconstruction of cuticle.qPCR results confirmed that myo-inositol mediated gene expression levels of the above cuticle-related pathways.Considering the importance of the cuticle in exoskeleton formation and molting,it can be concluded that myo-inositol-induced changes in the cuticle decomposition and reconstruction might have accelerated the transformation from megalopa to crablet of S.paramamosain.Besides,numerous DEGs were significantly enriched in protein digestion and absorption,amino sugar and nucleotide sugar metabolism.It implies that myo-inositol may improve survival by regulating energy or nutrient absorption.Additionally,the accelerated metamorphosis by myo-inositol may improve survival from megalopa to crablet of S.paramamosain.Overall,this study will provide the first insights into the underlying molecular mechanisms by which myo-inositol increases metamorphosis and survival.

关键词： Myo-inositol Scylla paramamosain Cuticle decomposition and reconstruction Chitin Metamorphosis Survival

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A review of gynogenesis manipulation in aquatic animals

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Aquaculture and Fisheries 2022年第1期7卷 1-6页

作者： Hidayah Manan A.B.Noor Hidayati Nur Aina Lyana Adnan Amin-Safwan Hongyu Ma Nor Azman Kasan Mhd Ikhwanuddin Higher Institution Centre of Excellence(HICoE) Institute of Tropical Aquaculture and FisheriesUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Institute of Biological Science Faculty of ScienceUniversity of MalayaKuala Lumpur50603Malaysia Guangdong Provincial Key laboratory of Marine Biotechnology Shantou UniversityShantou515063China stu-umt joint shellfish research laboratory Shantou UniversityShantou515063China

Gynogenesis is an established technique to generate all female type offspring and this technique has been successfully induced diploid gynogens progeny in aquatic animals of fishes and crustaceans.Monosex culture of all female shrimp and fishes were selected attribute to all female type offspring which have better size than male and help increase the market size and profitable.This article discusses on the protocol applied to produce gynogens progeny and the successful rate of gynogenesis production in fishes,molluscs and aquatic crustaceans of shrimps in general.Overall most of the UV length applied for irradiated the sperm were around 254-365 nm for(20-40 s),(20-80 s)and(5-8 s)for shrimps,254 nm,30 s for molluscs species and for fishes were around 254 nm for(1.5min)and(2-12 min)time of exposure respectively.For gynogenesis induction,the fertilized eggs were treated with cold shock,heat shock or cytochalasin-B for both shrimp and fishes gynogens technique.Fertilization rate was identified around 4.33%-19.67%in shrimp.Successful hatching rate was identified around 3.0%,14.9%-37.2%of gynogens offspring in shrimp and various percentages of hatching rates were identified from each species of fish gynogens.Overall,there is still low survival rate of gynogens produced using gynogenesis technique and further study should be carried out to improve the gynogens production.The discussed protocols serve as a guide lines for the gynogenesis technique application of all female monosex culture in the future.

关键词： UV-Length Irradiated sperm Fertilized eggs Hatching rate Survival rate Gynogens

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Identification and Characterization of Gene SpDMRT99B and Its Sex-Biased Expression Profile in the Mud Crab,Scylla paramamosain

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Journal of Ocean University of China 2021年第6期20卷 1495-1504页

作者： ZHANG Yin FANG Shaobin LIN Fei LI Shengkang ZHENG Huaiping ZHANG Yueling IKHWANUDDIN Mhd MA Hongyu Guangdong Provincial Key laboratory of Marine Biotechnology Institute of Marine SciencesShantou UniversityShantou 515063China stu-umt joint shellfish research laboratory Shantou UniversityShantou 515063China Institute of Tropical Aquaculture Universiti Malaysia TerengganuKuala Terengganu 21030Malaysia

The doublesex and mab-3 related transcription factor(DMRT)gene family is conserved from invertebrates to humans.The functions of DMRT are mainly involved in sex development and the formation of many tissues and organs.In this study,a DM(Doublesex/Mab-3-domain gene was identified in the mud crab Scylla paramamosain,and was named SpDMRT99B because of its many similarities to arthropod DMRT99B and phylogenetically close relationship with arthropod DMRT99B.The cDNA of SpDMRT99B gene is 1249 bp in length,encoding 224 amino acids.From 254 bp to 928 bp there is a conserved DM domain.No transmembrane domain was identified.Through multiple amino acid alignment and phylogenetic tree analysis,the closest gene to SpDMRT99B is Eriocheir sinensis DMRT99B,followed by Macrobrachium rosenbergii and Drosophila melanogaster DMRT99B.The expressions of the gene were characterized in different tissues of female and male crabs during early development period of crab individuals,as well as in different development periods of gonads.The results showed that SpDMRT99B gene is significantly highly expressed in testis than in ovary and other tissues.The expression level of SpDMRT99B in testis at different stages is significantly higher than that in ovary,and it is particularly highly expressed in immature testis.In early developmental stages of larvae,the expressions of SpDMRT99B remain at a low level and reach a peak at zoea stage I when the body segments shape up.It is speculated that SpDMRT99B gene might be involved in the gonadal development process and somitogenesis of S.paramamosain.

关键词： Scylla paramamosain DM domain gene SpDMRT99B sex determination/differentiation early development stage

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罗氏沼虾蜕皮过程中释放的氨基酸组分是引发同类残杀的因素?

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2020年第10期21卷 823-834页

作者： Abu Seman JUNETA-NOR Noordiyana Mat NOORDIN Mohamad Nor AZRA Hong-yu MA Norainy Mohd HUSIN Mhd IKHWANUDDIN institute of Tropical Aquaculture and Fisheries Universiti Malaysia TerengganuKuala NerusTerengganu 21030Malaysia Faculty of Fisheries and Food Sciences Universiti Malaysia TerengganuKuala NerusTerengganu 21030Malaysia Guangdong Provincial Key laboratory of Marine Biotechnology Shantou UniversityShantou 515063China stu-umt joint shellfish research laboratory Shantou UniversityGuangdong 515063China

目的:确定罗氏沼虾在蜕皮过程(该过程引起同类残杀)中释放的氨基酸组分,并明确其中差异的氨基酸成分。创新点:了解罗氏沼虾蜕皮过程中生化组分的变化对于理解同类残杀的重要意义。目前,还没有关于同类残杀和蜕皮过程与生化组分之间关系... 详细信息

目的:确定罗氏沼虾在蜕皮过程(该过程引起同类残杀)中释放的氨基酸组分,并明确其中差异的氨基酸成分。创新点:了解罗氏沼虾蜕皮过程中生化组分的变化对于理解同类残杀的重要意义。目前,还没有关于同类残杀和蜕皮过程与生化组分之间关系的研究报道。本研究以此为切入点,采用统计学方法探究二者之间的关联,并鉴定其中差异的氨基酸成分。方法:在人工饲养条件下,测定了蜕皮阶段和非蜕皮阶段的罗氏沼虾肌肉、外骨骼和养殖水体中的总氨基酸及自由氨基酸组分,采用双因素方差分析法比较分析了两个阶段氨基酸组分的差异,同时鉴定了差异的氨基酸成分。结论:在蜕皮阶段,组织中的总氨基酸以脯氨酸和肌氨酸的含量最高,而水体中的自由氨基酸含量以色氨酸和脯氨酸为主。研究结果表明,这些氨基酸组分在罗氏沼虾蜕皮过程中释放了促进同类残杀的化学信号。

关键词：氨基酸组分同类残杀化学信号罗氏沼虾蜕皮

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Impact of seawater carbonate variables on post-larval bivalve calcification

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Journal of Oceanology and Limnology 2018年第2期36卷 405-413页

作者：李加琦毛玉泽蒋增杰张继红卞大鹏方建光 Yellow Sea Fisheries research Institute Chinese Academy of Fishery Sciences Qingdao 266071 China laboratory of Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China Function laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China National Engineering and research Center of Marine shellfish Weihai 264316 China

Several studies have demonstrated that shellfish calcification rate has been impacted by ocean acidification. However, the carbonate system variables responsible for regulating calcification rate are controversial. To distinguish the key variables, we manipulated a seawater carbonate system by regulating seawater pH and dissolved inorganic carbon(DIC). Calcification rates of juvenile blue mussel(M ytilus edulis) and Zhikong scallop(C hlamys farreri) were measured in different carbonate systems. Our results demonstrated that neither [HCO ˉ^+ 3 ], DIC, or p H([H ^+ ]) were determining factors for the shellfish calcification rate of blue mussel or Zhikong scallop. However, a significant correlation was detected between calcification rate and DIC/[H ^+ ] and [CO_3^(2ˉ)] in both species.

关键词： ocean acidification calcification shellfish carbonate system

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Genome architecture and selective signals compensatorily shape plastic response to a new environment

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The Innovation 2023年第4期4卷 47-56页

作者： Ao Li Mingjie Zhao Ziyan Zhang Chaogang Wang Kexin Zhang Xu Zhang Pierre Raoul De Wit Wei Wang Juntao Gao Ximing Guo Guofan Zhang Li Li CAS and Shandong Province Key laboratory of Experimental Marine Biology Center for Ocean Mega-ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266071China laboratory for Marine Biology and Biotechnology Laoshan LaboratoryQingdao 266237China Key laboratory of Breeding Biotechnology and Sustainable Aquaculture Chinese Academy of SciencesWuhan 430072China University of Chinese Academy of Sciences Beijing 100049China Department of Automation Tsinghua UniversityBeijing 100084China Department of Marine Sciences University of GothenburgStromstad 45296Sweden National and Local joint Engineering Key laboratory of Ecological Mariculture Institute of OceanologyChinese Academy of SciencesQingdao 266071China Shandong Technology Innovation Center of Oyster Seed Industry Qingdao 266000China Haskin shellfish research laboratory Department of Marine and Coastal SciencesRutgers UniversityPort NorrisNJ 08349USA

Transcriptional plasticity interacts with natural selection in complexways and is crucial for the survival of species under rapid climate change.How 3D genome architecture affects transcriptional plasticity and its interaction with genetic adaptation are unclear.We transplanted estuarine oysters to a new environment and found that genes located in active chromatin regions exhibited greater transcriptional plasticity,and changes in these regions were negatively correlatedwith selective signals.

关键词： plasticity shape selective

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Abundance and characteristics of microplastics in shellfi sh from Jiaozhou Bay,China

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Journal of Oceanology and Limnology 2022年第1期40卷 163-172页

作者： Kangning ZHANG Junhua LIANG Tao LIU Qingjie LI Mingliang ZHU Shan ZHENG Xiaoxia SUN Jiaozhou Bay National Marine Ecosystem research Station Institute of OceanologyChinese Academy of SciencesQingdao 266071China laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Center for Ocean Mega-Science Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China

As an emerging pollutant,the presence of microplastics in marine organisms has been concerned increasingly.Shellfi sh,which are both economically and ecologically important,are of particular concern.In this study,we investigated the microplastic pollution in wild and farmed oysters(Crassostrea gigas)and clams(Ruditapes philippinarum)in the Jiaozhou Bay,China,for the fi rst time.We found the microplastic pollution in shellfi sh in Jiaozhou Bay was at a moderate level.The abundance of microplastics in shellfi sh ranged from 0.16 to 12.09 items/g(wet weight,ww)or 1 to 9 items/ind.The average abundance of the ingested microplastics was 1.21 items/g(or 2.17 items/ind.)in all shellfi sh,1.51 items/g(or 2.00 items/ind.)in clams and 0.92 items/g(or 2.34 items/ind.)in oysters.The abundance of microplastics in clams was signifi cantly higher than that in oysters.Most microplastics(92.97%)were fi bers,followed by fragments.The predominant color of the microplastics was black(42.97%),followed by blue,transparent,and red.Cellophane and polyethylene terephthalate(PET)dominated the microplastic composition.According to shellfi sh consumption,it can be inferred that the average microplastic consumption through Chinese diet is 1.27×10^(3)items per capita per year.

关键词： microplastics bivalves Jiaozhou Bay risk assessment

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Carbon sequestration processes and mechanisms in coastal mariculture environments in China

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Science China Earth Sciences 2017年第12期60卷 2097-2107页

作者： ZHANG YongYu ZHANG JiHong LIANG YanTao LI HongMei LI Gang CHEN Xiao ZHAO Peng JIANG ZengJie ZOU DingHui LIU XiaoYong LIU JiHua Key laboratory of Biofuels Shandong Provincial Key Laboratory of Energy GeneticsQingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China joint laboratory of Microbial Oceanograph Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Yellow Sea Fisheries research Institute Chinese Academy of Fishery SciencesQingdao 266071China Institute of Marine Science and Technology Shandong UniversityQingdao 266273China National Marine Data and Information Service Tianjin 300171China School of Environment and Energy South China University of TechnologyGuangzhou 510006China Shandong Haizhibao Marine Sci.&Tech.Ltd.Co. Weihai 264300China

China is the global leader in mariculture production. Increasing sequestered marine carbon(also known as blue carbon) via mariculture activities is a promising approach for mitigating climate change and promoting the development of a low-carbon economy. Mariculture blue carbon is also considered an important component of China's "sea granary". In addition to shellfish and macroalgae yields, which represent carbon removed from mariculture environment, blue carbon also includes other important components, which have been largely neglected in the past, such as the carbon transformed by microbes,dissolved organic carbon(mainly referred to as recalcitrant dissolved organic carbon), and sedimentary particulate carbon. Hence,from different aspects, a comprehensive study on the formation processes and mechanisms of carbon sequestration is of great significance for comprehensively unveiling the carbon sequestration capability in coastal mariculture environment, which will contribute to the sustainable development of the fishery economy and construction of an ecological civilization. Moreover, it may add significant economic benefits to the future carbon-trading market.

关键词： Macroalgae and shellfish mariculture Marine carbon sequestration Microbe Recalcitrant dissolved organic carbon Carbon sedimentation

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Carbon and nitrogen isotopes analysis and sources of organic matter in surface sediments from the Sanggou Bay and its adjacent areas, China

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Acta Oceanologica Sinica 2014年第12期33卷 48-57页

作者： XIA Bin CUI Yi CHEN Bijuan CUI Zhengguo QU Keming MA Feifei Key laboratory of Sustainable Utilization of Marine Fisheries Resources of Ministry of Agriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fisheries Sciences

Naturally existing stable carbon and nitrogen isotopes are important in the study of sedimentary organic matter sources. To identify the sources of sedimentary organic matter in Sanggou Bay and its adjacent areas, which is characterized by high-density shellfish and seaweed aquaculture, the grain size, organic carbon （OC）, total nitrogen （TN）, carbon and nitrogen isotopic composition （δ13C andδ15N） of organic matter in the surface sediment were determined. The results showed that, in August, sedimentary OC and TN ranged from 0.17% to 0.76% and 0.04% to 0.14%, respectively. In November, OC and TN ranged from 0.23% to 0.87% and 0.05% to 0.14%, respectively. There was a significant positive correlation between OC and TN （R=0.98, P＆lt;0.0001）, indicating that OC and TN were homologous. In August, theδ13C andδ15N of organic matter varied from -23.06‰ to -21.59‰ and 5.10‰ to 6.31‰, respectively. In November,δ13C andδ15N ranged from -22.87‰ to -21.34‰ and 5.13‰ to 7.31‰, respectively. This study found that the major sources of sedimentary organic matter were marine shellfish biodeposition, seaweed farming, and soil organic matter. Using a three-end-member mixed model, we estimated that the dominant source of sedimentary organic matter was shellfish biodeposition, with an average contribution rate of 65.53% in August and 43.00% in November. Thus, shellfish farming had a significant influence on the coastal carbon cycle.

关键词： carbon nitrogen stable isotopes organic matter sources sediment Sanggou Bay

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A framework for risk analysis of the shellfish aquaculture:The case of the Mediterranean mussel farming in Greece

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Aquaculture and Fisheries 2023年第4期8卷 375-384页

作者： John A.Theodorou Ioannis Tzovenis Department of Animal Production Fisheries&AquacultureUniversity of PatrasMesolonghi30200Greece laboratory of Ecology&Systematics Biology Dept.University of AthensPanepistimioupolisZografou15784Greece

Mediterranean mussel farming in Greece developed considerably during the last 40 years reaching a gross commodity product up to the limits of the country’s production capacity(35–40,000 tonnes/year).Despite the achievements in the sector’s growth,little or no effort has been attributed yet to risk assessment and moreover to risk management of the activity.The present effort aims at developing a working framework for the shellfish aquaculture of Greece to be used as a tool by the sector’s decision makers to advance strategies for risk elimination or avoidance.The work was based on a generic risk management standard tool,the joint Australian and New Zealand Risk Management Standard AS/NZS ISO 31000:2009 that has been adapted to the specific national characteristics of all levels of the mussel farming business-activities and the industry function.The framework supported by data sets regarding development,production,profits and losses,retrieved by surveys through distributed questionnaires or interviews during site-visits,as well as by collecting data from national and international authorities.Data input covered technology,farm size,farmer risk-attitude,risk-management strategies,risk-perceptions and socioeconomic profiles.Major risks and risk management options were identified providing aid for remediation risk policies to the stakeholders.

关键词： ISO 31000 Risk analysis Mediterranean mussel farming Aquaculture insurance

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