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Spatial structure and seasonal changes of nekton assemblages in the Taiwan Strait

Acta Oceanologica Sinica 2016年第6期35卷 59-67页

作者： SONG Puqing lin longshan LI Yuan ZHONG Zhihui The Third Institute of Oceanography State Oceanic Administration

The Taiwan Strait is a transition zone between the East China Sea and the South China Sea with unique hydrology and a geographical environment that creates special marine community *** analyze the spatial structure and seasonal changes of the nekton assemblages in the Taiwan Strait,seasonal experimental trawl surveys were conducted during *** results showed that there were two assemblages in the area with different sets of species,and the average similarity within each group varies between 39.38% and 74.20%.By using multivariate statistical analysis and analyzing the distribution of dominant species,we found that the structures of the assemblages had obvious seasonal *** middle region from the Putian transect to the Xiamen transect could be considered a mixing area for the two *** analysis of the relationship between species assemblages and environmental factors indicated that temperature was the most important factor affecting the community structure in cold seasons,and 22.5°C and 17°C could be considered dividing lines for spring and winter,*** warm seasons,the most important factor was water depth,but the relationship with depth was not as significant,with a correlation between 0.264 and *** seasonal changes of nekton assemblages basically reflected the dynamic currents in the Taiwan *** south coastal assemblage extended to nearly the entire area of the Taiwan Strait along with a strong and intense warm current that shrinks in spring and winter when the southward intrusion of the cold Zhejiang-Fujian coastal current becomes *** impact of shortterm and long-term environmental changes,such as extreme weather,global warming and human activity on nekton assemblages,had been recognized but need further *** study on nekton assemblages could be used as a baseline for measuring future changes.

关键词： nekton assemblages species composition spatial structure transition zone Taiwan Strait

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Early life history traits of chub mackerel Scomber japonicus in the Oyashio water revealed by otolith microstructure

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Journal of Oceanology and Limnology 2023年第6期41卷 2444-2450页

作者： Xiaolu LI Chi ZHANG Yongjun TIAN longshan lin Shigang LIU Research Centre for Deep Sea and Polar Fisheries and Key Laboratory of MaricultureMinisty of EducationOcean University of ChinaQingdao 266100China Frontiers Science Center for Deep Ocean Multispheres and Earth System(FDOMES) Ocean University of ChinaQingdao 266100China Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361000China

Information on survival and growth during the early life stage is essential to understand the mechanism of interannual variations in fish *** mackerel Scomber japonicus is a commercially important pelagic fish widely distributed in the northwestern *** catch showed large fluctuations with changes in distribution and migration under climate change and strong *** determined the hatch dates and growth rates of young-of-the-year of chub mackerel through otolith microstructure using samples collected in the Oyashio water in autumn *** show that the ages of young chub mackerel ranged between 120 and 180 d,and the estimated hatch date lasted from midJanuary to late May with a peak from mid-March to *** otolith daily increment width during the early life stages(from hatching to 25 d)showed an increasing *** mackerel grows slowly in the first 10 d,and then grows faster during the 10thto *** groups with dissimilar growth histories and migration routes were identified using unsupervised random forest clustering analysis,but all eventually converge on the same nursery *** faster growth of young-of-the-year chub mackerel leads to better recruitment due to the hypothesis of growth-dependent *** chub mackerels hatched in March and April,the spawning period is longer and earlier,which could lead to strong year *** findings on population composition and life history traits of young-of-the-year of chub mackerel provide valuable information on its recruitment processes during the period of stock recovery.

关键词： Scomber japonicus otolith microstructure growth history unsupervised random forest clustering recruitment

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Levels and patterns of genetic variation in Pampus minor:Assessment of a mitochondrial DNA control region sequence

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Acta Oceanologica Sinica 2021年第4期40卷 74-83页

作者： Yuan Li Liyan Zhang ling Zhang Cheng Liu longshan lin Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China Fujian Institute of Oceanography Xiamen 361013China Fisheries College Jimei UniversityXiamen 361021China

Pampus minor is an important commercial *** to the similarity of external morphological characteristics among the genus Pampus species,*** has often been identified as the juvenile group of both *** and *** little genetic background on this species is known,this study was based on control region sequences and provided the first evaluation of the genetic signature of 264 individuals of *** from 11 populations along the coasts of China and *** results indicate high genetic haplotype diversity and low nucleotide diversity in this ***,two differentiated haplotype lineages were identified in the *** ***,phylogenetic structures corresponding to the geographical locations were unable to be *** of molecular variance identified a vast majority of the genetic variation occurring within populations.F-statistic test value(FST)of pairwise indicated that great differences existed between the Chinese and Malaysian *** *** the Chinese populations,the genetic differences were insignificant with the exception of the Xiamen population,which is a marginal *** the late Pleistocene,a population expansion of *** *** expanded populations originated from the glacial refugium in the South China Sea and then rapidly occupied and adapted to their new *** results of this study provide genetic information for ensuring the protection and management of *** resources.

关键词： phylogeography South China Sea Pampus minor genetic diversity genetic differentiation

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Potential anticancer activity analysis of piscidin 5-like from Larimichthys crocea

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Acta Oceanologica Sinica 2022年第3期41卷 53-60页

作者： Libing Zheng Jiayin Qiu Huihui Liu Changfeng Chi longshan lin National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources School of Marine Science and TechnologyZhejiang Ocean UniversityZhoushan 316022China Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China

Antitumor activity is one characteristic function of some certain antimicrobial peptides(AMPs)found in recent *** the present study,we attempted to detect potential anticancer activity of a recombinant piscidin 5-like from Larimichthys crocea(r Lc-P5L)which owned widely antibacterial and strong antiparasitic activity in *** light microscope observation indicated r Lc-P5L was of antitumor activity to He La cells,293 T cells and L929 *** assay showed the toxic sensitivity of r Lc-P5L to three tumor cell strains was 293 T>L929>He *** electron microscope(SEM)results showed r Lc-P5L behaved like a lytic peptide to cause damage on cells membrane of L929 cells by forming globular clusters,even pores at 60μmol/L,or degrading membrane to make it completely lose cytoskeleton structure at 80μmol/L;r Lc-P5L treatment also resulted in DNA *** observation results indicated r Lc-P5L could cause L929 cells at least two obvious changes:one is nucleus,nuclear chromatin condensed in the margin,nuclear volume became smaller and shrank to be out of shape,or lysed to be debris;the other is cytoskeleton,they became disordered and polarized to make cells atrophic shapes,or even lysed to be *** summary,r Lc-P5L owned potential anticancer activity causing membrane structure damage and genome DNA ***,treatment with different concentration of r Lc-P5L seemingly caused the similar but different changes,whether it indeed gave rise to cancer cells diverse death way,the further studies should be performed,and the detailed mechanisms were still need further explored.

关键词： Larimichthys crocea piscidin 5-like anticancer activity membrane destruction DNA degradation

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eDNA技术在深远海鱼类多样性研究中的应用潜力

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上海海洋大学学报 2024年第5期33卷 1238-1247页

作者：李渊温一琳李海刘世刚妙星林龙山上海海洋大学海洋生物资源与管理学院上海201306 自然资源部第三海洋研究所海洋生物多样性研究室福建厦门361005

深远海作为海洋生态系统的重要组成部分,具有独特的生物多样性特征,蕴含了丰富的渔业资源。因此,对深远海鱼类多样性实施高效、准确的检测是开展渔业资源利用和管理的重要前提。然而,基于网具捕捞的传统调查方法具有一定的局限性,eDNA... 详细信息

深远海作为海洋生态系统的重要组成部分,具有独特的生物多样性特征,蕴含了丰富的渔业资源。因此,对深远海鱼类多样性实施高效、准确的检测是开展渔业资源利用和管理的重要前提。然而,基于网具捕捞的传统调查方法具有一定的局限性,eDNA技术因其具有更广泛的应用场景、更突出的成本效益、更高的检测灵敏度和更精细的物种分辨率以及更低的分类阶元偏向性等特点和优势,可作为传统调查方法的重要补充,并且在深远海鱼类多样性监测和渔业资源调查中具有广阔的应用前景。归纳总结了eDNA在鱼类多样性的研究现状及其在深远海鱼类多样性研究中的应用优势,同时结合深远海水域的环境特点,探讨了eDNA技术在深远海鱼类多样性研究中的应用潜力以及可能面临的相关挑战,并为未来进一步的研究工作提供系统的科学参考。

关键词： eDNA 深远海鱼类多样性渔业资源生态系统

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Fish diversity and molecular taxonomy in the Prydz Bay during the 29th CHINARE

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Acta Oceanologica Sinica 2018年第8期37卷 15-20页

作者： LI Yuan ZHANG Liyan SONG Puqing ZHANG Ran WANG Liangming lin longshan Third Institute of Oceanography State Oceanic AdministrationXiamen 361005China Fujian Institute of Oceanography Xiamen 361013China

In 2013, the 29th Chinese National Antarctic Research Expedition（CHINARE） prospected the Prydz Bay on the Antarctic continental shelf, and the Chinese R/V Xuelong icebreaker sampled all of the examined locations. The nature of Antarctic fish diversity in the high-latitude Prydz Bay is virtually unknown, and the accuracy of relevant estimates has not been established. Thus, it is necessary to evaluate this diversity and propose protective measures. In total, ninety-nine specimens were collected from various locations. To overcome uncertainties associated with identifying species based on morphology, DNA barcoding（COI gene） was employed to reconstruct phylogenetic relationships with delimited references from NCBI. Twenty-two species representing six families were unambiguously identified from a neighbor-joining（NJ） tree and barcoding gaps. With the morphological identification, thirteen species were identified correctly, five species were identified correctly at the genus level, and four species were identified at the close sister species level. Notothenioid dominance was not evident in the Prydz Bay, in contrast to other published studies. The low species diversity and catch biomass during this CHINARE were severely constrained by limited fishing methods and localized sites, which led to biased underestimation. Our analyses indicate that DNA barcoding is an effective tool for the identification of fish species in the Prydz Bay. The identification and distribution of Antarctic fish should be an integral component of understanding Antarctic fish biodiversity and biogeography, and large-scale studies are necessary for the further taxonomic identification of Antarctic fish.

关键词： DNA barcoding Prydz Bay Antarctic fish phylogenetic relationship barcoding gap

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Morphological characteristics and DNA barcoding of Pampus echinogaster(Basilewsky, 1855)

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Acta Oceanologica Sinica 2017年第12期36卷 18-23页

作者： LI Yuan ZHANG Yan GAO Tianxiang HAN Zhiqiang lin longshan ZHANG Xiumei Third Institute of Oceanography State Oceanic Administration Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences National Engineering Research Center for Marine Aquaculture Zhejiang Ocean University

The morphological similarities of Pampus fishes have led to considerable confusion in species-level identification,and no accurate information on neotype or DNA barcoding of Pampus echinogaster is available. Two hundred and seven specimens of P. echinogaster were collected from the coastal waters of Dandong, Dongying, Qingdao,Nantong, Zhoushan, Wenzhou, Changle, Taiwan, and Wakayama（Japan）, from June 2010 to April 2013. The diagnostic characteristics of P. echinogaster are as follows： dorsal fin VIII-XI-43–51, anal fin V-VIII-43–49, pectoral fin 22–27, caudal fin 19–22, pelvic fin absent; first gill rakers sparse, slender（pointed）, 3–4＋12–16=15–20; vertebrae39–41; transverse occipital canal on top of head moderately small, wavy ridges not reaching upper origin of pectoral fin; ventral branch of lateral line canal spare, shorter than dorsal branch of lateral line canal. By combining congener sequences of the cytochrome oxidase I（COI） gene from Gen Bank, two absolute groups were detected among all specimens, which further indicated that two valid species were present based on genetic differences in amino acid sequences and the distance between the groups. The sequences of Group 1 can be regarded as DNA barcoding of P. echinogaster. The correct morphological redescription and DNA barcoding of *** are presented here to provide a guarantee for efficient and accurate studies, a theoretical basis for classification, and enable appropriate fishery management and conservation strategies for the genus Pampus in the future.

关键词： morphological characteristics DNA barcoding Pampus echinogaster genetic differentiation transverse occipital canal

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Otolith Microstructure Analysis Reveals Different Growth Histories of Japanese Sardine (Sardinops melanostictus) in the Oyashio Waters

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Journal of Ocean University of China 2022年第1期21卷 236-242页

作者： LIU Chunlin ZHANG Chi TIAN Yongjun WANG Liangming lin longshan LI Yuan WATANABE Yoshiro Key Laboratory of Mariculture Ministry of EducationOcean University of ChinaQingdao 266003China Frontiers Science Center for Deep Ocean Multispheres and Earth System(FDOMES) Ocean University of ChinaQingdao 266100China Laboratory for Marine Fisheries Science and Food Production Processes Pilot National Laboratory for Marine Science and TechnologyQingdao 266237China Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361000China Atmosphere and Ocean Research Institute The University of TokyoKashiwa 277-8564Japan

After decades of low year classes,the stock of Japanese sardine(Sardinops melanostictus)has begun to recover since the *** hatch dates and otolith growth rates of age-0 juvenile sardine,which were collected in the subarctic Oyashio waters in autumn 2018,were determined from an otolith microstructure *** sardines were hatched from late January to late April,while mostly in February and *** otolith growth rate increased continuously up to 60 d after hatching and thereafter *** revealed growth rate in a crucial growth period is faster than that reported for juvenile sardines collected in the 1990s,which is coincided with the recent recovery trend of the sardine *** groups with different hatch dates,growth histories,and migration routes were identified using unsupervised random forest clustering *** were considered inshore and offshore migration individuals in accordance with recent *** the offshore group,a high proportion of sardine juveniles hatched late and grew faster in the Kuroshio-Oyashio transitional waters,a finding consistent with the hypothesis of growth-rate-dependent *** finding on the population composition and growth rate of juvenile sardine in the Oyashio waters can be a basis for an improved prediction of their survival and provides us with valuable information on the recruitment processes of this stock during the period of stock recovery.

关键词： Sardinops melanostictus otolith microstructure growth history unsupervised random forest clustering recruitment

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基于GAM模型的东海中南部大黄鱼资源密度分布及其与环境因子的关系

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中国海洋大学学报（自然科学版） 2024年第9期54卷 60-69页

作者：谢世君刘世刚宋普庆王芮李渊王艺红黄凌风林龙山自然资源部第三海洋研究所福建厦门361005 漳州市水产技术推广站福建漳州363000 厦门大学环境生态学院福建厦门361102

为探究大黄鱼(Larimichthys crocea)资源密度与海洋环境因子之间的关系,本文基于2018年秋季和2019年春季东海中南部两个航次渔业资源调查数据,采用广义加性模型(Generalized additive model,GAM)对大黄鱼资源密度及其与环境因子的关系... 详细信息

为探究大黄鱼(Larimichthys crocea)资源密度与海洋环境因子之间的关系,本文基于2018年秋季和2019年春季东海中南部两个航次渔业资源调查数据,采用广义加性模型(Generalized additive model,GAM)对大黄鱼资源密度及其与环境因子的关系进行了研究。研究表明,大黄鱼尾数密度和生物量密度秋季为106.2 ind/km^(2)和6.57 kg/km^(2),春季为7.9 ind/km^(2)和0.45 kg/km^(2)。春季大黄鱼分布重心位于鱼山渔场,秋季分布重心南移进入温台渔场。广义加性模型分析结果表明:春秋两季最优模型均由离岸距离、温度、盐度组成,其中秋季最优模型的温度和盐度因子均为底层水体,而春季环境因子均为表层水体;春秋两季大黄鱼生物量密度均随温度上升而下降;秋季随着底层盐度的增加先上升后下降,最适底层盐度为33.7;春季随表层盐度升高而呈单调增加趋势。春季和秋季大黄鱼分布受到了不同水层环境的影响,这是由其栖息和繁殖特性的季节变动所导致的。本研究结果阐明了春秋季东海中南部大黄鱼资源分布情况及其对海洋环境因子的响应。

关键词：大黄鱼时空分布资源密度环境因子广义加性模型东海

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Antibacterial and antiparasitic activities analysis of a hepcidinlike antimicrobial peptide from Larimichthys crocea

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Acta Oceanologica Sinica 2020年第10期39卷 129-139页

作者： Libing Zheng Yuan Li Jun Wang Ying Pan Jia Chen Weiqiang Zheng longshan lin State Key Laboratory of Large Yellow Croaker Breeding Ningde 352103China Third Institute of Oceanography Ministry of Natural ResourcesXiamen 361005China National and Provincial Joint Laboratory of Exploration and Utilization of Marine Aquatic Genetic Resources School of Marine Science and TechnologyZhejiang Ocean UniversityZhoushan 316022China

As an economically important marine fish,the large yellow croaker Larimichthys crocea suffered from marine white spot disease caused by the ectoparasite Cryptocaryon irritans in recent *** disease not only could result in physiological damage,but also lead to secondary bacterial *** indicated some AMPs(antimicrobial peptides)were of antiparasitic activity to ***-like(Lc-HepL)was one of the significant differential expression genes excavated from the transcriptome following a challenge with *** this study,we characterized this AMP’s bioactivity based on the levels of mRNA and *** challenged by ***,qRT-PCR showed Lc-HepL was significantly upregulated in six tissues,including gill,muscle,liver,head kidney and spleen during theront infection,trophont falling off,and secondary bacterial invasion stages,which implicated a role Lc-HepL played in the immune defense against *** and secondary bacterial *** Lc-HepL(rLc-HepL)was induced and purified ***-HepL exhibited antibacterial activity to certain bacteria in a dose-and time-dependent *** activity was explored for the first time and found it could cause the theronts membrane rupture and contents *** results provided the first evidence that Lc-HepL had strong antiparasitic activity against marine fish ectoparasites *** ***,data indicated that Lc-HepL might be an important component in the innate immune system against *** and has the potential to be employed in future drug development.

关键词： Larimichthys crocea Cryptocaryon irritans hepcidin-like antibacterial activity antiparasitic activity

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