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20 0 1年在兴凯湖档壁镇对兴凯鱼白进行渔业生物学调查 ,共采集兴凯鱼白2 0 3尾。捕捞群体体长由 1 5 3～ 2 6 3cm组成 ,平均为 2 0 6cm ;体重由 5 0～ 2 70g组成 ,平均为 1 2 5g ;年龄组成为 2 +～ 7+龄 ;体长体重相关关系为W =0 0 0 5L3 31 2 ,r=0 983,n =45 ;性比为1∶1 5 (♀∶♂ ) ;相对生殖力 8 3～ 1 2 7 5粒 /g ,平均为 62 7粒 /g;绝对生殖力 75 0～ 30 0 0 0粒 ,平均为 1 0 765粒 ;成熟系数雌群 0 5 6%～ 7 88% ,平均为 4 48% ;雄群 0 60 %～1 88% ,平均为 1 % ;肥满度系数雌群为 1 2～ 1 6% ,平均为 1 4% ;雄群 0 8～ 1 3% ,平均为 1 0 % ;种群数量 2 0 0 1年约 1 60t。兴凯湖兴凯鱼白的资源呈明显下降状态 ,亟待加强种质资源保护。
In 2011, a survey of fisheries biology of Xingkai white was conducted in Xingbi town of Xingkai Lake. A total of 230 tail Xingkai fish were collected. The length of the fishing group consisted of 153 to 263 cm with an average of 206 cm and body weight comprised 50 to 270 g with an average of 125 g and an age of 2 to 7 years. With the ratio of 1: 1.5 (♀: ♂) and the relative fecundity of 83 to 127.5 grains / g, with an average of 62 7 for W = 0 0 0 5L3 31 2, r = 0 983, and n = The average reproductive capacity of the population was 75 0 ~ 30 0 0 0, with an average of 1 0 765. The coefficient of maturity was 0 56% ~ 7 88%, with an average of 48%. The population of 0 60% -1 88 %, With an average of 1%; fatness coefficient of 12 to 16% of female population, an average of 14%; 0 8 ~ 13% of the population, with an average of 10%; population of about 2001 1 60t. Xingkai Lake Xingkai white resources showed a marked decline in the state, urgent need to strengthen the protection of germplasm resources.