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Evidence for the role of KIF17 in fish spermatid reshaping:expression pattern of KIF17 in larimichthys polyactis spermiogenesis

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Journal of Oceanology and Limnology 2021年第6期39卷 2322-2335页

作者： Jingqian WANG Xinming GAO Xuebin ZHENG Chen DU Congcong HOU Qingping XIE Bao LOU Feng LIU Shan JIN Junquan ZHU Key Laboratory of Applied Marine Biotechnology by the Ministry of Education School of Marine SciencesNingbo UniversityNingbo 315211China Zhejiang Academy of Agricultural Sciences Hangzhou 310021China

The homodimeric kinesin-2 protein KIF17 functions in intracellular transport and spermiogenesis in ***,its role in fish spermiogenesis has not been ***,we aimed to clone full-length kif17 cDNA and determine the molecular characteristics and expression patterns of KIF17 in larimichthys polyactis *** full-length cDNA of *** kif17(Lp-kif17)was sequenced and found to contain a 332-bp 5′untranslated region,480-bp 3′untranslated region,and 2433-bp open reading frame encoding 810 amino *** analyses showed that *** KIF17(Lp-KIF17)shared high sequence similarity with homologs in other animals and possessed an N-terminal motor domain with microtubule-binding sites and adenosine triphosphate(ATP)hydrolysis sites,a stalk domain containing two coiled-coil regions,and a C-terminal tail *** Lp-kif17 mRNA was widely expressed in various tissues,with the highest level in the brain,followed by that in the *** in situ hybridization(FISH)analysis revealed that Lp-kif17 was continuously expressed in spermiogenesis,showing that it had potential functions in this *** immunofluorescence(IF)analysis,we found that Lp-KIF17 colocalized with tubulin and was transferred from the perinuclear cytoplasm to the side of spermatid where the tail forms during *** findings suggested that KIF17 is involved in *** *** particular,it may participate in nuclear shaping and tail formation by interacting with perinuclear microtubules during spermatid *** addition to providing evidence for the role of KIF17 in fish spermatid reshaping,this study provides important data for studies of reproductive biology in ***.

关键词： KIF17 spermiogenesis larimichthys polyactis spermatid reshaping

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Testis Development and Ultrastructural Features During Spermatogenesis in Cultured Small Yellow Croaker,larimichthys polyactis

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Journal of Ocean University of China 2023年第5期22卷 1412-1426页

作者： ZHENG Xuebin WANG Jingqian GAO Xinming DU Chen HOU Congcong XIE Qingping LIU Feng ZHU Junquan LOU Bao Key Laboratory of Applied Marine Biotechnology by the Ministry of Education School of Marine SciencesNingbo UniversityNingbo 315211China Zhejiang Academy of Agricultural Sciences Hangzhou 310021China

The small yellow croaker larimichthys polyactis is an economically important marine fish in Northeast ***,its natural resources are threatened by overfishing and environmental ***,research on the reproductive system of the fish is ***,we studied the testis development and ultrastructural features of spermatogenesis in cultured *** using anatomical,histological,and ultrastructural techniques.A pair of testes,consisting of a central sperm duct and radial seminiferous lobules,were *** reproduction cycle of testes can be divided into stages I–*** to May was confirmed as the breeding season for male ***,while April is the ideal period for artificial *** male *** can attain sexual maturity within 1 *** spermatogenesis of *** comprised spermatogonium,spermatocyte,spermatid,and mature *** morphology of spermatogenic cells changed obviously during spermiogenesis,including nuclear shaping,midpiece and flagellum *** mature sperms consist of an ellipsoidal head,a short midpiece,and a long *** anterior of the head with a kidney-shaped nucleus can be *** midpiece is located posterior to the head and includes four to six spherical *** flagellum has irregular lateral *** testis of *** is an unrestricted lobular type,with cystic spermatogenesis,type II spermiogenesis,and type II *** features are highly similar to those of other Sciaenid *** findings provide useful insights into the mechanism underlying testis development and spermatogenesis of ***,which can facilitate the artificial breeding of this species.

关键词： testis development spermatogenesis larimichthys polyactis histology ultrastructure

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Genetic variation of the small yellow croaker(larimichthys polyactis)inferred from mitochondrial DNA provides novel insight into the fluctuation of resources

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Acta Oceanologica Sinica 2022年第11期41卷 88-95页

作者： Jian Zheng Tianxiang Gao Yunrong Yan Na Song Key Laboratory of Mariculture of Ministry of Education Ocean University of ChinaQingdao 266003China Fishery College Zhejiang Ocean UniversityZhoushan 316022China College of Fisheries Guangdong Ocean UniversityZhanjiang 524088China

The small yellow croaker(larimichthys polyactis)belongs to the family Sciaenidae,which is an offshore warm fish species and widely distributed in the western *** this study,the variation of genetic diversity and genetic differentiation among *** populations was analyzed by mitochondrial DNA control region.A total of 110 polymorphic sites were checked,which defined 134 *** level of haplotype diversity(h=0.993±0.002)was detected in the examined *** genetic structure analyse(analysis of molecular variance,Fst)showed there were high gene flow among *** *** result showed that there were relatively high genetic diversity and low genetic differentiation among the Yellow Sea and the East China Sea populations,which can be attributed to diverse habitats,wide distribution range and high mutation rate of control *** phylogenetic methods,coalescent analyses(neutrality tests,mismatch distribution analysis,Bayesian skyline analyses)and molecular dating interpreted in conjunction with paleoclimatic and physiographic evidence,we inferred that the genetic make-up of extant populations of *** was shaped by Pleistocene environmental impacts on the historical demography of this ***,relatively constant genetic diversity and larger effective population size were detected in recent *** *** result showed that the fishing policy certainly,such as the summer closed fishing,played a role in protecting resources of *** study can offer a wealth of biological novelties which indicates genetic structure of *** population and provides the foundation for resources protection and policy setting.

关键词： larimichthys polyactis genetic diversity genetic differentiation mitochondrial DNA control region

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Early life migration and population discrimination of the small yellow croaker larimichthys polyactis from the Yellow Sea: inferences from otolith Sr/Ca ratios

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Journal of Oceanology and Limnology 2022年第2期40卷 818-829页

作者： Dade SONG Ying XIONG Tao JIANG Jian YANG Xiaming ZHONG Jianhua TANG College of Marine Sciences Shanghai Ocean UniversityShanghai 201306China Jiangsu Marine Fisheries Research Institute Nantong 226007China Key Laboratory of Fishery Ecological Environment Assessment and Resource Conservation in Middle and Lower Reaches of Yangtze River Freshwater Fisheries Research CenterChinese Academy of Fishery SciencesWuxi 214081China

The small yellow croaker larimichthys polyactis is a benthic marine fish species of high ecological and commercial importance and is widely distributed in the northwestern Pacifi c Ocean,especially in the Chinese coastal waters of the Bohai,Yellow,and East China *** a highly migratory species,the whole life migration of *** has been intensively ***,knowledge about its early life migration is scarce,and population divisions are inconsistent,limiting the ability of fishery scientists and administrators to evaluate the design and potential benefits of thorough conservation and resource-management *** the present study,otolith Sr/Ca was analyzed to investigate the early migratory patterns and discriminate the populations of *** in the Yellow Sea,including two spawning groups and one overwintering *** variation in Sr/Ca ratios of ontogenetic growth zones,including the nucleus(N),larval(L),metamorphosis(M),juvenile(J),and edge(E)zones,was measured by electron probe *** variation in Sr/Ca ratios in early developmental growth zones was generally characterized by an evident downward trend from the N to J zone,which suggests that the early migratory pattern of *** might be from inshore to nearshore *** discriminant analysis,based on the otolith Sr/Ca ratios of the N,L,M,and J zones,allowed the successful discrimination of the two populations,namely,the northern and southern Yellow Sea groups,whose diff erences were mainly reflected in the L and J *** with previous studies,the traditional geographic boundaries(34°N)separating these two populations might be moving *** application of otolith Sr/Ca ratios based on ontogenetic stage could improve our understanding of the migration and population discrimination of *** from the Yellow Sea.

关键词： otolith microchemistry larimichthys polyactis early life migration population discrimination the Yellow Sea

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Growth and Mortality of Small Yellow Croaker(larimichthys polyactis) Inhabiting Haizhou Bay of China

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Journal of Ocean University of China 2012年第4期11卷 557-561页

作者： LIU Qun XU Binduo YE Zhenjiang REN Yiping College of Fisheries Ocean University of ChinaQingdao 266003P.R.China

Length frequency data of small yellow croaker （larimichthys polyactis） were acquired from the survey vessel in May, July, September and December, 2011 in Haizhou Bay of China. In this study, 921 fish individuals were analyzed for the estimation of growth and mortality parameters. Between length and weight, the power coefficient b was 2.7321, 2.9703, 3.0418 and 2.7252 for the 4 surveying months, respectively. The estimated von Bertalanffy growth function parameters were 230mm （L∞） and 0.26yr-1 （K） as were calculated with ELEFAN method equipped in FiSAT computer package. With length-converted catch curve analysis, the total mortality rate （Z） and its 95% confidence interval were 2.16 （1.69-2.64） yr-1, 0.59 （0.15-1.04） yr-1, 1.16 （0.80-1.52） yrl and 0.96 （0.70-1.23） yr1 for the 4 surveying months, respectively, with the pooled data the value was 1.15 （0.81-1.48） yr1. The natural mor- tality rate （M） was 0.516 yr 1 as was calculated with Pauly＇s equation （the annual average sea water temperature was 11 ℃）. Therefore, fish mortality rate was 0.634 yrz. The yield-per-recruit analysis indicated that when tc was 1, Fmax, was 0.7 and F01 was 0.55. Cur- rently, the age at first capture is about 1 year and Fcurrent was 0.634. Therefore, Fcurrent was larger than F0.1 and less than Fmax. This indicates that current fish mortality is at a dangerously high level. With Gulland method, the biological reference point for fishery （Fopt） was estimated as 0.516 yr1, lower than current fish mortality. Accordingly, reducing catch in the region was strongly recom- mended.

关键词： Haizhou Bay larimichthys polyactis length-weight relationship growth mortality FiSAT

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Current status of small yellow croaker resources in the southern Yellow Sea and the East China Sea

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Chinese Journal of Oceanology and Limnology 2011年第3期29卷 547-555页

作者：林龙山刘尊雷姜亚洲黄伟高天翔 Third Institute of Oceanography SOA East China Sea Fisheries Research Institute Chinese Academy of Fishery Sciences Ocean University of China Key Laboratory of Marine Ecology and Environmental Science Institute of Oceanology Chinese Academy of Sciences

We used data from bottom trawl surveys to study the factors influencing the abundance of small yellow croaker, larimichthys polyactis, in the southern Yellow Sea （SYS） and the East China Sea （ECS）. The resource density index （RD1） was generally higher in summer and autumn than in spring and winter. RDIs were also significantly greater in the SYS than in the ECS in summer and autumn. The bottom water salinity and depth of spatial distribution of small yellow croaker was similar between the two areas in summer, but different in other seasons. Regression analysis suggested that environmental factors such as bottom water temperature, salinity, and depth influenced the RDIs in summer in these areas. Growth condition factor （GCF） in the two areas varied monthly and the croaker in the SYS grew more slowly than those in the ECS. This was likely due to the low bottom temperature of the Yellow Sea Cold Water Mass in summer and autumn or to higher human fishing pressure in the ECS. To ensure sustainable utilization of the croaker stocks in these regions, we recommend reducing the fishing intensity, increasing the cod-end mesh size, and improving the protection of juveniles.

关键词： larimichthys polyactis biology ecology Akaike Information Criterion (AIC)

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Comparison of otolith shape descriptors and morphometrics for stock discrimination of yellow croaker along the Chinese coast

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Journal of Oceanology and Limnology 2018年第5期36卷 1870-1879页

作者： SONG Junjie ZHAO Bo LIU Jinhu CAO Liang DOU Shuozeng CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of Sciences Qingdao 266071China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology Qingdao 266071China University of ChineseAcademy of Sciences Beijing 100049China

T his study compared and evaluated the efficiency of two otolith shape descriptors(i.e., the elliptic Fourier transform(EFT) and discrete wavelet transform(DWT)) and morphometrics for stock discrimination. To accomplish this, sample fish from three stocks of yellow croaker L arimichthys polyactis along the Chinese coast(LDB stock from the Liaodong Bay of the Bohai Sea, JZB stock from the Jiaozhou Bay of the Yellow Sea and CJE stock from the Changjiang River estuary of the East China Sea) were used for otolith morphology analyses. The results showed that morphometrics produced an overall classification success rate of 70.8% in contrast with success rates of 80.0% or 82.0% obtained using EFT or DWT, respectively. This suggests that the two shape descriptors comparably discriminated among the stocks and performed more efficiently than morphometrics. During data adjustment and acquisition, some size variables were excluded from the subsequent discriminant analysis for stock discrimination because they were statistically "inef fective," which could reduce the efficiency of morphometrics and lead to relatively low overall classification success. Both EFT and DWT retain the contour coefficients and thus provide a detailed description of otolith shape, which could improve discriminatory efficiency compared with morphometrics.

关键词： otolith stock discrimination discrete wavelet transform elliptic Fourier transform morphometrics larimichthys polyactis

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