海洋学报（中文版）
海洋學報（中文版）
해양학보（중문판）
ACTA OCEANOLOGICA SINICA
2014年
6期
124-130
,共7页
体长%体重%幂指数%小黄鱼%产卵群体%空间分布
體長%體重%冪指數%小黃魚%產卵群體%空間分佈
체장%체중%멱지수%소황어%산란군체%공간분포
body-length%weight%power b%small yellow croaker%spawning groups%spatial distribution
鱼类产卵群体的相关研究一直是渔业领域关注的热点，对鱼类的产卵期、产卵场的研究是鱼类生态习性研究方向的重要组成部分。本文在前期研究证实鱼类体长-体重关系幂指数可以指示鱼类产卵期的基础上，利用2004年4个季节的东海大面积调查数据，尝试利用同一时间点上的各个调查点幂指数信息来分析鱼类产卵场分布特征，结果发现，成熟产卵个体仅在春季出现，而未成熟产卵个体4季均有分布，以此推测小黄鱼存在“跳过产卵”现象。另外发现，单靠幂指数大小，不能区分各个产卵成熟阶段，也不能区分产卵个体与非产卵个体；而怀卵个体出现站点的幂指数平均值偏低于匀速生长，空间上也具有类似特征，即幂指数相对低的地方一般对应怀卵个体相对集中的水域。本文依据幂指数分布，推断小黄鱼成熟产卵群体有3块相对集中水域，即舟山渔场近海、济州岛西南侧和江外与舟外渔场临近水域。
魚類產卵群體的相關研究一直是漁業領域關註的熱點，對魚類的產卵期、產卵場的研究是魚類生態習性研究方嚮的重要組成部分。本文在前期研究證實魚類體長-體重關繫冪指數可以指示魚類產卵期的基礎上，利用2004年4箇季節的東海大麵積調查數據，嘗試利用同一時間點上的各箇調查點冪指數信息來分析魚類產卵場分佈特徵，結果髮現，成熟產卵箇體僅在春季齣現，而未成熟產卵箇體4季均有分佈，以此推測小黃魚存在“跳過產卵”現象。另外髮現，單靠冪指數大小，不能區分各箇產卵成熟階段，也不能區分產卵箇體與非產卵箇體；而懷卵箇體齣現站點的冪指數平均值偏低于勻速生長，空間上也具有類似特徵，即冪指數相對低的地方一般對應懷卵箇體相對集中的水域。本文依據冪指數分佈，推斷小黃魚成熟產卵群體有3塊相對集中水域，即舟山漁場近海、濟州島西南側和江外與舟外漁場臨近水域。
어류산란군체적상관연구일직시어업영역관주적열점，대어류적산란기、산란장적연구시어류생태습성연구방향적중요조성부분。본문재전기연구증실어류체장-체중관계멱지수가이지시어류산란기적기출상，이용2004년4개계절적동해대면적조사수거，상시이용동일시간점상적각개조사점멱지수신식래분석어류산란장분포특정，결과발현，성숙산란개체부재춘계출현，이미성숙산란개체4계균유분포，이차추측소황어존재“도과산란”현상。령외발현，단고멱지수대소，불능구분각개산란성숙계단，야불능구분산란개체여비산란개체；이부란개체출현참점적멱지수평균치편저우균속생장，공간상야구유유사특정，즉멱지수상대저적지방일반대응부란개체상대집중적수역。본문의거멱지수분포，추단소황어성숙산란군체유3괴상대집중수역，즉주산어장근해、제주도서남측화강외여주외어장림근수역。
Studies on fish spawning group are always the focus of fisheries science.Spawning periods and areas are important parts of fish ecological habit studying.Power b in exponent relationship between fish body length and weight as spawning period indicator has been tested and proved with one whole year data in previous paper.Based on the above,this study tries to analysis the spatial character of fish spawning groups by power b at a time point with the data collected from a bottom trawl survey in the 4 seasons of 2004 in the East China Sea.The results show that,ripening small yellow croakers appeared only in spring,however immature individuals appeared in all of 4 seasons,which suggests the presence of“skip spawning”phenomenon.Another finding is that different spawning mature stages can not be distinguished only based on the value of power b,neither the difference between the spaw-ning and non-spawning;while the average power b of sites including spawning individuals appeared lower than that in a constant speed growing,and similar characteristics also occurred in the space,where the relatively low power b generally occurred in the waters with relative high concentration of spawning individuals.Based on power b,three areas with relative high concentration of ripening individuals were inferred,including the offshore of Zhoushan fish-ing ground,the southwest side of Jeju Island and the adjacent water between Jiangwai and Zhouwai fishing grounds.
