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| 1 | 基于角质颚的东、黄海头足类科类判别显示文摘角质颚具有稳定的结构特征,是头足类分类的良好材料之一。根据在东、黄海采集的分属3个科6个种类样本(中国枪乌贼Loligo chinensis、杜氏枪乌贼Uroteuthis duvauceli、虎斑乌贼Sepia pharaonic、神户乌贼Sepia kobiensis、短蛸Octopus ocellatus和长蛸Octopus variabilis),通过测量其角质颚的形态参数,对不同科类的角质颚进行判别分析,并将原始数据和标准化数据的分析结果进行对比分析。结果发现:中国枪乌贼和虎斑乌贼的角质颚参数原始数据分别大于杜氏枪乌贼和神户乌贼,而标准化后的结果正好相反;短蛸的角质颚参数无论在标准化前后均大于长蛸;在角质颚原始数据中选出10个用于最终的判别分析,上头盖长、下脊突长、下翼长贡献了绝大部分差异。3个科总判别成功率为92.8%;在角质颚标准化数据中选出7个用于最终的判别分析,上头盖长/胴长、下侧壁长/胴长、下翼长/胴长贡献了绝大部分差异,3个科总判别成功率为98.1%。由此可见,对角质颚数据进行标准化处理,能够有效地提升判别正确率。 | 方舟 陈新军 金岳 | 2019 | 上海海洋大学学报2019，28，3： | 8 |
| 2 | Inter-Annual Variabilities of the Body Weights of Two Cephalopod Species in the Yellow Sea Under Different Environmental Conditions显示文摘As fish stocks have been overexploited and catches have decreased over the last few years,the cephalopod catch has increased globally to the point that they are now among the most important marine resources in the world.Climate change and hu-man activities greatly affect the growth and abundance of cephalopods.Understanding how the individual growth of key species varies and how they respond to environmental changes is essential for an effective fishery management.Loliolus beka and Amphioc-topus fangsiao are two dominant species in the cephalopod community of Yellow Sea(YS).Both of them are commercially impor-tant and have great ecological values.Herein,we compared the body weights(BW)of these two species from 2011 to 2018 based on an analysis of biological parameters(i.e.,mantle length and BW)from trawl surveys in the YS.Considerable temporal variations in the BW of the two species are apparent.Specifically,the BW of L.beka was the lowest in 2011 and the highest in 2017,and the well growth was noted in 2015-2018.The BW of A.fangsiao was the lowest in 2013 and the highest in 2016,while well growth was ob-served in 2015-2016.Mixed-effect models indicate that the BW of these species correlates significantly with the sea surface tem-perature(SST)and Southern Oscillation Index(SOI),suggesting the impact of the regional environment associated with strong ENSO events on BW.In a different response window,growth increases with increased SST and decreases with increased SOI.The consistent patterns of the BW of these cephalopods in response to environmental factors demonstrate they can be employed as indi-cator species for studying environmental change in the YS.Our results improve the understanding of the responses of cephalopods to environmental changes in the YS,as well as the mechanisms that drive their growth.Such information is critical for the effective management and sustainable development of cephalopod fisheries in this region. | GUO Jianzhong ZHANG Chi LI Jianchao TIAN Yongjun YE Zhenjiang LI Zhixin GAO Zihui | 2022 | Journal of Ocean University of China2022，21，2： | 0 |
| 3 | Using statolith shape analysis to identify fi ve commercial Loliginidae squid species in Chinese waters显示文摘Identification of squids in the family Loliginidae is a time-consuming exercise because of the highly overlapping distributions of species and their overall similarity(fin shape and size,sucker ring dentition,and color).Identifying squid based on statolith morphology is considered more accurate than identifying species based on beaks or gladius morphology.We report and compare the statolith shape offive commercially Loliginidae squid(Uroteuthis(Photololigo)duvaucelii,U.edulis,U.chinensis,Loliolus beka,L.japonica)to determine how well these structures discriminate species.Based on statolith morphology,variation in the lateral and dorsal domes enables an 84.8%success rate at classifying species.Environmental factors correlate with statolith shape,and for vertically migrating squid,statolith relative size decreases with increased depth of habitation.Statolith morphology can be used to effectively and accurately identify species of Loliginidae squid occurring in Chinese waters,and may prove valuable for identifying and managing squid resources. | Jianzhong GUO Dan LIU Chi ZHANG Yongjun TIAN Zhixin LI | 2021 | Journal of Oceanology and Limnology2021，39，3： | 0 |
| 4 | 不同气候年间西北印度洋鸢乌贼角质颚微结构及生长特性差异显示文摘为研究不同气候年间西北印度洋鸢乌贼角质颚的生长变化特性,根据2019年(厄尔尼诺)和2020年(正常)相同月份(2~5月)中国灯光罩网渔船于西北印度洋采集的1 896尾鸢乌贼样本,通过角质颚研磨,对不同气候年间角质颚的微结构及其生长特性进行了对比研究。结果表明,西北印度洋鸢乌贼角质颚微结构包括头盖和脊突两部分,日龄生长纹以明暗交替的方式呈周期性生长,2019年角质颚生长纹间隔及宽度都较小,色素沉积更浅,纹路异常现象较多。协方差分析表明,不同气候年间角质颚外形特征参数与日龄的关系均存在性别间显著性差异。2019年雌性个体所有外形特征参数与日龄的关系均最适用指数函数表示,但2020年雌性个体所有外形特征参数与日龄的关系均最适用对数函数表示;2019年雄性个体除下脊突长LCL (lower crest length)与日龄的关系最适用指数函数表示外,其余特征参数与日龄的关系均最适用幂函数表示,2020年雄性个体所有外形特征参数与日龄的关系均最适用线性函数表示。除2020年雄性个体6项特征参数的绝对生长率AGR (absolute growth rate)和瞬时相对生长率IRGR(instantaneousrelativegrowthrate)随日龄增加呈先下降后上升的“U”型趋势外,其余的AGR和IGRG均随日龄增加呈明显的倒“U”型趋势。不同气候年间生长率达到峰值时的日龄区间不同,2020年各特征参数AGR均高于2019年。研究结果揭示不同气候年间西北印度洋角质颚微结构存在差异,角质颚外形特征参数的生长方程和生长率在不同气候年间也存在差异性。 | 陆化杰 何静茹 陈静 崔红 欧玉哲 赵懋林 陈新军 | 2023 | 海洋与湖沼2023，54，2： | 0 |
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