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Eyes of diff ering colors in Alvinocaris longirostris from deep-sea chemosynthetic ecosystems: genetic and molecular evidence of its formation mechanism

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Journal of Oceanology and limnology 2021年第1期39卷 282-296页

作者： Qian XIN Min HUI chaolun li Zhongli SHA Institute of Oceanology Chinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China University of Chinese Academy of Sciences Beijing 100049China

Coloration is an important phenotypic trait for multiple adaptive *** is interesting to fi nd white-eye(AW)and orange-eye(AO)phenotypes in the shrimp Alvinocaris longirostris inhabiting the deep-sea cold seep and hydrothermal vent areas of the northwestern Pacifi *** comparative transcriptome analyses,1491 diff erentially expressed genes(DEGs)were identified between AW and *** them,many DEGs were associated with immunity,antioxidation,and detoxifi *** signifi cant enzyme encoding genes,xanthine dehydrogenase,and tryptophan oxidase involved in pigment biosynthesis pathways were up-regulated in AW and AO,respectively,which might be related to the diff erences of white and orange eye ***,single nucleotide polymorphism(SNP)calling detected that genotypes of 28 SNP distributing in 14 unigenes were completely diff erent between AW and ***,there were three and two non-synonymous mutations in immune genes crustin Pm5 and antimicrobial peptide,*** indicate that the diff erence in eye color is probably resulted from immune response to variable micro-environmental stressors encountered in the dispersal process of the shrimps,such as symbiotic microbes,pathogens,and toxic substances,and might be genetically fi xed at *** suggested pathway preliminarily explained the formation mechanism of diff erent eye phenotypes in Alvinocaridid shrimps,providing a basis for further study on adaptive evolution of eyes in deep-sea chemosynthetic faunas.

关键词： alvinocaridid shrimps cold seep and hydrothermal vent diff erentially expressed genes eye color single nucleotide polymorphism(SNP)mutation transcriptome

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Inductive eff ect of bioactive substances on strobilation of jellyfi sh Aurelia coerulea

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Journal of Oceanology and limnology 2020年第5期38卷 1548-1558页

作者： WANG Nan WANG Minxiao WANG Yantao li chaolun Key Laboratory of Marine Ecology and Environmental Sciences Center of Deep-sea ResearchInstitute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

The moon jellyfi sh Aurelia *** a worldwide distributed scyphozoan species that seasonally blooms in coastal *** the strobilation is directly responsible for the scale of jellyfi sh bloom,the underlying mechanisms remain largely *** exposed Aurelia coerulea polyps to 18 bioactive substances to test their ability to induce strobilation at the natural typically non-strobilation temperature of 21°*** revealed that *** polyps responded in four *** I—no change for estradiol,folic acid,iodine,retinoic acid,serotonin hydrochloride,and vitamin *** suggested that 5-aza-2-deoxycytidine and N-acetyl-L-glutamic acid could not induce strobilation,since the percent of strobilated polyps in these two substances treatments was 3.3%and 1%,*** II—polyp body elongation for 3,5-diiodo-Ltyrosine,indole-3-acetic acid,L-dopamine,and noradrenaline *** III—transverse constrictions for L-thyroxine,progesterone,and melatonin ***,Type IV—complete strobilation for 5-methoxy-2-methylindole,acetylcholine chloride,and indomethacin treatments,where the pre-strobilation periods were 2,4,and 2 days,and the mean numbers of ephyrae released per strobila were 4.7,5.7,and 5.7,*** results reveal that indole derivatives,which contained methoxy or methyl pharmacophore,were the common strobilation inducer in the genus *** organic compounds,catecholamine,acetylcholine chloride,and retinoic acid are species-specifi c strobilation ***,*** strobilation is regulated by neuronal and endocrine *** fi ndings provide clues in understanding the mechanism of strobilation and contribute to developing specifi c strobilation antagonists in controlling moon jellyfi sh blooms.

关键词： Aurelia coerulea jellyfi sh strobilation bioactive substances metamorphosis

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Fatty Acid Composition of Euphausia superba,Thysanoessa macrura and Euphausia crystallorophias Collected from Prydz Bay,Antarctica

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Journal of Ocean University of China 2016年第2期15卷 297-302页

作者： YANG Guang li chaolun WANG Yanqing Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of Sciences

The information of trophic relationship is important for studying the Southern Ocean ecosystems. In this study, three dominant krill species, Euphausia superba, Thysanoessa macrura and Euphausia crystallorophias, were collected from Prydz Bay, Antarctica, during austral summer of 2009/2010. The composition of fatty acids in these species was studied. E. superba and T. macrura showed a similar fatty acid composition which was dominated by C140, C16：0, EPA （eicosapentenoic acid） and DHA （decosahexenoic acid） while E. crystallorophias showed higher contents of C 18：1（n-9）, C 18： 1 （n-7）, DHA and EPA than the former two. Higher fatty acid ratios of C 18：1（n-9）/18：1（n-7）, PUFA （polyunsaturated fatty acid）/SFA （saturated fatty acid）, and 18PUFA/16PUFA indicated that E. crystallorophias should be classified as a typical onmivore with a higher trophic position compared with E. superba and T. rnacrura.

关键词： fatty acid krill Prydz Bay Euphausia superba Euphausia crystallorophias Thysanoessa macrura

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Factors aff ecting lipid and fatty acid composition of Calanus sinicus in the Yellow Sea and the East China Sea in spring

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Journal of Oceanology and limnology 2022年第1期40卷 173-182页

作者： Yanqing WANG Zhencheng TAO chaolun li Mengtan liU Key Laboratory of Marine Ecology and Environmental Sciences 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 Engineering and Technology Department Institute of OceanologyChinese Academy of SciencesQingdao 266071China Jiaozhou Bay National Marine Ecosystem Research Station Chinese Academy of SciencesQingdao 266071China Center of Deep Sea Research Institute of OceanologyChinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China

The factors aff ecting lipid and fatty acid composition of copepod Calanus sinicus in the Yellow Sea(YS)and the East China Sea(ECS)were examined in this *** spring,there were signifi cant diff erences between these two regions for both environmental conditions and food *** regional diff erence signifi cantly infl uenced the lipid and fatty acid profi les of *** results show that *** has a higher lipids content in ECS,especially for wax ester and triglyceride lipids,indicating a more active and effi cient *** to BIO-ENV analysis,the variation of lipids profi les may be infl uenced majorly by water ***,the fatty acids(FAs)profi les of *** were also diff erent between YS and ECS,especially in the four major contributors,C22꞉1ω11,eicosapentaenoic acid(EPA),docosahexenoic acid(DHA),and C20꞉1ω*** considerable amounts of self-biosynthesized FAs of herbivorous copepod(C22꞉1ω11 and C20꞉1ω9)and low DHA/EPA ratio may indicate that *** in ECS feed mainly on phytoplankton comparing to those in *** fatty acid profi les of *** were aff ected by the diff erences in food availability.

关键词： Calanus sinicus lipid storage wax ester fatty acid composition Yellow Sea and East China Sea

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Identification and characterization of endosymbiosis-related immune genes in deep-sea mussels Gigantidas platifrons

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Journal of Oceanology and limnology 2020年第4期38卷 1292-1303页

作者： li Mengna CHEN Hao WANG Minxiao ZHONG Zhaoshan ZHOU li li chaolun Center of Deep Sea Research and Key Laboratory of Marine Ecology&Environmental Sciences(CODR and KLMEES) Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China

Deep-sea mussels of the subfamily Bathymodiolinae are common and numerically dominant species widely distributed in cold seeps and hydrothermal *** long-time evolution,deep-sea mussels have evolved to be well adapted to the local environment of cold seeps and hydrothermal vents by various ways,especially by establishing endosymbiosis with chemotrophic ***,biological processes underlying the establishment and maintenance of symbiosis between host mussels and symbionts are largely *** the present study,Gigantidas platifrons genes possibly involved in the symbiosis with methane oxidation symbionts were identified and characterized by lipopolysaccharide(LPS)pull-down and in situ *** immune related proteins including Toll-like receptor 2(TLR2),integrin,vacuolar sorting protein(VSP),matrix metalloproteinase 1(MMP1),and leucine-rich repeat(LRR-1)were identified by LPS pull-down *** five proteins were all conserved in either molecular sequences or functional domains and known to be key molecules in host immune recognition,phagocytosis,and lysosome-mediated ***,in situ hybridization of LRR-1,TLR2 and VSP genes was conducted to investigate their expression patterns in gill tissues of ***,LRR-1,TLR2,and VSP genes were found expressed exclusively in the bacteriocytes of ***,it was suggested that TLR2,integrin,VSP,MMP1,and LRR-1 might be crucial molecules in the symbiosis between *** and methane oxidation bacteria by participating in symbiosis-related immune processes.

关键词： Gigantidas platifrons endosymbiosis innate immunity pull-down assay immune recognition methane oxidation bacteria

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Gametogenesis and reproductive traits of the cold-seep mussel Gigantidas platifrons in the South China Sea

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Journal of Oceanology and limnology 2020年第4期38卷 1304-1318页

作者： ZHONG Zhaoshan WANG Minxiao CHEN Hao ZHENG Ping li chaolun CODR and KLMEES Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Center for Genomics and Biotechnology Fujian Agriculture and Forestry UniversityFuzhou 350002China

Gigantidas platifrons(Bivalvia,Mytilidae),the dominant species at the Formosa cold seep,relies on methanotrophic symbionts dwelling in its gills for *** reproductive patterns of *** provide fundamental information for understanding the population recruitment of this ***,we know very little about important processes in reproduction,such as gametogenesis and symbiotic bacteria *** this end,we described the developmental patterns of the gonads from nine surveys and juvenile length-distribution from one-year larval traps and detected bacteria in gonad from *** *** results show that *** is a functionally dioecious *** reproduction of *** is discontinuous,with spawning maturity peak around the fourth quarter of the *** seasonal reproduction of *** was further supported by the unimodal shell length distribution of the trapped juvenile *** the small oocyte size(48.99–70.14μm),which was comparable to that of coastal mussels,we proposed that *** developed via a free-living,planktotrophic larval stage before *** blooms at the water surface can also supply the development of the planktonic larvae of ***,no bacteria were observed in gonads,suggesting a horizontal symbiont transfer mode in this ***,these results provide fundamental biological information for an improved understanding of the early life history of *** in the Formosa cold seep.

关键词： cold seep gametogenesis Gigantidas platifrons reproductive South China Sea(SCS)

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Effects of nutrient limitations on three species of zooplankton

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Acta Oceanologica Sinica 2018年第4期37卷 58-68页

作者： CHEN Lei li chaolun ZHOU Konglin SHI Yongqiang liU Mengtan Key Laboratory of Marine Ecology and Environmental Sciences Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China University of Chinese Academy of Sciences Beijing 100049 China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China Center of Deep Sea Research Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Key Laboratory of Marine Ecosystem and Biogeochemistry Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao 266071 China Jiaozhou Bay Marine Ecosystem Research Station Chinese Ecosystem Research Network Qingdao 266071 China

Nutrient imbalance—a mismatch in nutrient ratios between the available food supply and the demands of consumers—has the potential to be transported up food chains,exposing zooplankton to nutrient *** this study,the response of Calanus sinicus（copepod）,Moina mongolica（cladocera）,and Brachionus plicatilis（rotifer） to nutrient-limited（no-limited,P-limited,and N-limited） food were evaluated from the perspective of growth,reproduction,and stoichiometric *** results indicated that the growth of three species was suppressed under nutrient-limited（especially P-limited） ***,the effect of nutrient limitations on their reproduction was *** ***,the dietary UFA（unsaturated fatty acid） as a major phospholipid component affected their egg production and total FA supporting energy promoted the hatchability of ***,excess carbon in the diet promoted egg production but reduced hatching *** ***,nutritional（P and UFA） and energy（total FA） support affected their *** fecundity exhibited the same pattern of growth（no-limited〉N-limited〉P-limited）.In terms of stoichiometric homeostasis,***＇ s elemental compositions were less likely to be affected by nutrient limitations than *** suggest that the effects of nutrient imbalances could potentially become an evolutionary force affecting ecosystem structure and stability in eutrophic waters.

关键词： zooplankton nutrient growth reproduction stoichiometric homoeostasis

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Effects of liaoning Hongyanhe Nuclear Power Plant on the Zooplankton Community in Summer of 2017

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Journal of Ocean University of China 2020年第5期19卷 1140-1152页

作者： WANG Junjian TAO Zhencheng WANG Yantao WEI Hao liU Xin li chaolun CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China School of Marine Science and Technology Tianjin UniversityTianjin 300072China State Key Laboratory of Marine Environmental Science Xiamen UniversityXiamen 361005China

To evaluate the effects of the Hongyanhe Nuclear Power Plant on the zooplankton community in the surrounding seawater during summer, multiple environmental factors and zooplankton distribution along the east coast of liaodong Bay were investigated in the summer of 2017. In particular, the influences of seawater temperature, salinity, and chlorophyll a(Chl a) on the zooplankton community were analyzed. Zooplankton abundances and Chl a concentrations along the east coast of liaodong Bay showed an initial increase followed by a decrease from July to September. During the three months, the zooplankton abundance was the highest(8116.70 ind m^(-3)) in August. The Shannon-Wiener index showed a downtrend from July to September, with the average value falling from 1.65 in July to 1.50 in September. Calanus sinicus, Paracalanus parvus, copepodid, and bivalve larvae were the dominant species/groups in the three months. The effects of the nuclear power plant's outlet on the environment factors were mainly reflected in the increased seawater temperature. Redundancy analysis showed that the zooplankton community was jointly affected by seawater temperature, salinity and Chl a concentration, and the degree of this impact varied monthly. The impact of seawater temperature on the zooplankton community was stronger than that of salinity. The primary impact of the Hongyanhe Nuclear Power Plant on the structure and distribution of the zooplankton community in the surrounding seawater during the summer was increased seawater temperature, which caused a reduction in the abundance of dominant species/groups.

关键词： zooplankton abundance community structure diversity environmental factor Hongyanhe Nuclear Power Plant

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Changes in the population structure of Calanus sinicus during summer–autumn in the southern Yellow Sea

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Acta Oceanologica Sinica 2019年第8期38卷 56-63页

作者： Yongqiang Shi Song Sun chaolun li Guangtao Zhang Bo Yang Peng Ji CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Key Laboratory of Sustainable Development of Marine Fisheries of Ministry of Agriculture and Rural Affairs Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Qingdao 266071 China Jiaozhou Bay National Marine Ecosystem Research Station Institute of Oceanology Chinese Academy of SciencesQingdao 266071 China Laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science andTechnology (Qingdao) Qingdao 266237 China University of Chinese Academy of Sciences Beijing 100049 China Center for Ocean Mega Science Chinese Academy of Sciences Qingdao 266071 China

Calanus sinicus is a calanoid copepod widely distributed in coastal waters of China and Japan, and oversummering strategies may have major impacts on their population dynamics which in turn affect local marine food web structure. The abundance, stage composition, and sex composition of the planktonic copepod C. sinicus were studied from August to October 2002 in the southern Yellow Sea to understand how its population recovers from the over-summering state. Results showed that C. sinicus had low reproduction in August due to high temperature, except in waters near the Cheju Island with rich food and moderate bottom temperature, but the reproduction rates here decreased in September–October as food availability declined. When temperature dropped in September–October, C. sinicus actively propagated in coastal shallow waters. However, reproduction rates of C. sinicus individuals inhabiting the Yellow Sea Cold Water Mass(YSCWM) remained low during the three months of the study. The percentage of C. sinicus females was high during the reproductive period, which suggests that the sex composition of adult C. sinicus may reflect whether or not the population is in the reproductive *** fifth copepodite stage(CV) C. sinicus aggregated in the YSCWM in a suspended developmental stage during the three months of this study, and they potentially served as the parental individuals for population development when conditions became optimal for reproduction later in the year.

关键词： Calanus sinicus stage composition sex composition population structure Yellow Sea Cold Water Mass life history strategy

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Experimental clearance rates of Aurelia coerulea ephyrae and medusae,and the predation impact on zooplankton in Jiaozhou Bay

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Journal of Oceanology and limnology 2020年第4期38卷 1256-1269页

作者： WANG Pengpeng ZHANG Fang SUN Song WANG Weicheng WAN Aiyong li chaolun CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental Sciences Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Jiaozhou Bay Marine Ecosystem Research Station Chinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

The population explosion of jellyfish Aurelia coerulea occurred in Jiaozhou Bay,China in *** potential predation impact of *** on zooplankton was *** clearance potential and residence time(t 1/2)for copepods were calculated from laboratory clearance rates and measurements of jellyfish size and abundance from May to August 2009 in Jiaozhou *** rates varied widely with prey organisms,but they were not significantly different among various prey *** captured rotifers,fish larvae and hydromedusae more efficiently than fish eggs,copepods and *** captured rotifers and hydromedusae more efficiently than fish larvae and *** rate linearly increased with the cross sectional area of ***(size from 0.3 to 7.1 cm).Water temperature also had a marked effect on clearance rate and this was related to the increased beat frequency as water temperature *** early May 2009,*** potentially cleared the volume of water in the Bay less than 0.001 times a day,but this value was estimated to be more than 0.3 times a day in *** t 1/2 for copepods was less than 6 d in June and *** of copepods,hydromedusae and chaetognaths were extremely low in 2009 compared to 2008 and 2010(jellyfish non-bloom years).Large predation pressure by the *** population occurred to control zooplankton communities in Jiaozhou ***,when present at a high population level,can be a keystone species in Jiaozhou Bay and control the trophic structure here.

关键词： scyphomedusae predation pressure prey selection zooplankton control jellyfish bloom

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