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海洋学报（英文版）
海洋学报（英文版）

潘德炉

双月刊

0253-505X

hyxbe@263.net

010-62179976

100081

北京海淀区大慧寺路8号

海洋学报（英文版）/Journal Acta Oceanologica SinicaCSCDCSTPCDSCI
正式出版
收录年代

    Three-dimensional constrained gravity inversion of Moho depth and crustal structural characteristics at Mozambique continent-al margin

    Shihao YangZhaocai WuYinxia FangMingju Xu...
    120-129页
    查看更多>>摘要：Mozambique's continental margin in East Africa was formed during the break-off stage of the east and west Gondwana lands.Studying the geological structure and division of continent-ocean boundary(COB)in Mozambique's continental margin is considered of great significance to rebuild Gondwana land and understand its movement mode.Along these lines,in this work,the initial Moho was fit using the known Moho depth from reflection seismic profiles,and a 3D multi-point constrained gravity inversion was carried out.Thus,high-accuracy Moho depth and crustal thickness in the study area were acquired.According to the crustal structure distribution based on the inversion results,the continental crust at the narrowest position of the Mozambique Channel was detected.According to the analysis of the crustal thickness,the Mozambique ridge is generally oceanic crust and the COB of the whole Mozambique continental margin is divided.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Yuzaoea gen.nov.,a new biraphid diatom(Bacillariophyceae)genus and its phylogenetic significance

    Honghan LiuChenhong LiLang LiXuesong Li...
    130-136页
    查看更多>>摘要：The flexed frustules in pennate diatoms are usually associated with monoraphid diatoms.Interestingly,we found a biraphid diatom species with flexed frustules in an offshore intertidal beach environment on Weizhou Island,Beihai City,Guangxi Zhuang Autonomous Region,China.Therefore,based on morphological characteristics,we described a new genus of diatoms Yuzaoea sinensis gen.et sp.nov.CH Li,HH Liu,YH Gao&CP Chen.The frustule of this genus is characterized by heterogeneous frustule with one concave valve and one convex valve,complete raphe on both valves,straight and moderately eccentric raphe,uniseriate striae and girdle bands with a single row of areolae.The most identifying feature of this genus was the flexed frustule,which is rare in biraphid diatoms and common in monoraphid diatoms.We compared the morphometric characteristics of genus Yuzaoea with genus Rhoikoneis and several genera within the family Rhoicospheniaceae,including Rhoicosphenia,Campylopyxis,and Cuneolus.Phylogenetic analyses based on SSU rRNA and rbcL showed that the genus Yuzaoea was the sister group to the clade of Rhoicosphenia with a high support value(bootstrap values = 100%),and the clade"Yuzaoea+Rhoicosphenia"was sister to the clade of monoraphid diatoms,in which the genera Achnanthidium,Planothidium and some Cocconeis with high support values(bootstrap = 100%).Morphologically,the genus Yuzaoea shares many morphological features with monoraphid diatoms like genera Achnanthidium and Planothidium and the members within the Rhoicospheniaceae.Therefore,based on a combined morphological studies and phylogenetic results we suggested that this branch may represented the evolution of one kind monoraphid diatoms,from biraphid diatoms(e.g.genus Yuzaoea),to incompleted biraphid diatoms(e.g.genera Rhoicosphenia,Campylopyxis),to monoraphid diatoms(e.g.genera Achnanthidium and Planothidium).
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Gene characterization and phylogenetic analysis of four mito-chondrial genomes in Caenogastropoda

    Jiangyong QuWanqi YangXindong TengLi Xu...
    137-150页
    查看更多>>摘要：Caenogastropoda is a highly diverse group,containing～60%of all existing gastropods.Species in this subclass predominantly inhabit marine environments and have a high ecological and economic value.Owing to the increase in relevant phylogenetic studies,our understanding of between species relatedness in Caenogastropoda has improved.However,the biodiversity,taxonomic status,and phylogenetic relationships of this group remain unclear.In the present study,we performed next-generation sequencing of four complete mitochondrial genomes from three families(Buccinidae,Columbellidae,and Cypraeidae)and the four mitogenomes were classical circular structures,with a length of 16 177 bp in Volutharpa ampullacea,16 244 bp in Mitrella albuginosa,16926 bp in Mauritia arabica asiatica and 15422 bp in Erronea errones.Base composition analysis indicated that whole sequences were biased toward A and T.Then compared them with 171 complete mitochondrial genomes of Caenogastropoda.The phylogenetic relationship of Caenogastropoda derived from Maximum Likelihood(ML)and Bayesian Inference(BI)trees constructed based on CDS sequences was consistent with the results of traditional morphological analysis,with all three families showing close relationships.This study supported Caenogastropoda at the molecular level as a separate clade of Mollusca.According to our divergence time estimations,Caenogastropoda was formed during the middle Triassic period(～247.2-237 Ma).Our novel mitochondrial genomes provide evidence for the speciation of Caenogastropoda in addition to elucidating the mitochondrial genomic evolution of this subclass.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Development of SNP parentage assignment techniques in the yellowfin seabream Acanthopagrus latus

    Hongbo ZhaoLiangmin HuangJing ZhangSongyuan You...
    151-155页
    查看更多>>摘要：Acanthopagrus latus is an essential aquaculture species on the south coast of China.However,there is a lack of systematic breeding of A.latus,which considerably limits the sustainable development of A.latus.As a result,genetic improvements are urgently needed to breed new strains of A.latus with rapid growth and strong resistance to disease.During selective breeding,it is necessary to estimate the genetic parameters of the target trait,which in turn depends on an accurate disentangled pedigree for the selective population.Therefore,it is necessary to establish the parentage assignment technique for A.latus.In this study,95 individuals selected from their parents and their 14 families were used as experimental material.SNPs were developed by genome re-sequencing,and highly polymorphic SNPs were screened on the basis of optimized filtering parameters.A total of 14 392 738 SNPs were discovered and 205 SNPs were selected for parentage assignment using the CERVUS software.In the model where the gender of the parents is known,the assignment success rate is 98.61%for the male parent,97.22%for the female parent,and 95.83%for the parent pair.In the model where the gender of the parents is unknown,the assignment success rate is 100%for a single parent and 90.28%for the parent pair.The results of this study were expected to serve as a reference for the breeding of new varieties of A.latus.
      原文链接:
    • 万方数据
    • 维普

    Parent-offspring relationship recognition based on SSR and mtDNA confirmed resource supplement effect of Fenneropen-aeus chinensis release

    Song SunDing LyuXianshi JinXiujuan Shan...
    156-160页
    查看更多>>摘要：The resource of Fenneropenaeus chinensis has declined sharply due to excessive fishing intensity,ecological changes and diseases.In order to supplement the fishing yield and restore resources of F.chinensis,the relevant authorities have carried out the activities of stock enhancement and releasing.It can increase biomass and recover resources.However,compared with increasing biomass,there were still few reports on its effect on the recovery of resources.Resource recovery is a process related to whether the released individuals can form a reproductive population.Up to now,there has been a lack of evidence whether the released F.chinensis can complete the entire life history,and form reproduction population.In this study,gravid female shrimp after spawning migration were captured from coastal waters of Haiyang,Qingdao,and Yellow Sea.After identifying parentage relationships using simple sequence repeat(SSR)and mtDNA haplotype,it was finally confirmed that there were eight released individuals in the recapture samples.It was confirmed for the first time that at least part of the released F.chinensis can complete overwintering and reproductive migration,and maintain the migration habits as their wild counterparts.Therefore,we infered that the released shrimp can reproduce under natural conditions,these F.chinensis can form reproductive populations theoretically if without human intervention.These results indicated that enhancenment and release activities have a positive effect on resource recovery.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    An improved algorithm based on equivalent sound velocity pro-file method at large incident angle

    Qianqian LiQian TongFanlin YangQi Li...
    161-167页
    查看更多>>摘要：With the development of ultra-wide coverage technology,multibeam echo-sounder(MBES)system has put forward higher requirements for localization accuracy and computational efficiency of ray tracing method.The classical equivalent sound speed profile(ESSP)method replaces the measured sound velocity profile(SVP)with a simple constant gradient SVP,reducing the computational workload of beam positioning.However,in deep-sea environment,the depth measurement error of this method rapidly increases from the central beam to the edge beam.By analyzing the positioning error of the ESSP method at edge beam,it is discovered that the positioning error increases monotonically with the incident angle,and the relationship between them could be expressed by polynomial function.Therefore,an error correction algorithm based on polynomial fitting is obtained.The simulation experiment conducted on an inclined seafloor shows that the proposed algorithm exhibits comparable efficiency to the original ESSP method,while significantly improving bathymetry accuracy by nearly eight times in the edge beam.
      原文链接:
    • NETL
    • NSTL
    • 万方数据