About TAKAYANAGI SHIRO
About 北海道中央水試
About YAMAGUCHI MOTOHITO
About 北海道中央水試
About ISHIDA RYOTARO
About 北海道釧路水試
About 北海道立水産試験場研究報告
About Clupea pallasii
About spawning season
About population(ecology)
About fish school
About age
About abundance
About water temperature
About age specificity
About temperature dependence
About growth analysis
About Clupea pallasi
About year class group
About maturity
About Body Size
About Ishikari Bay
About Age dependency
About Fishes
About Fishing grounds and fishing conditions
About 石狩湾
About ニシン
About 産卵
About 年齢
About 豊度
About 成熟
About 割合
About 体サイズ