CAJ | 학술논문

以生活在高寒湿地草海中鲫鱼的鳞片作为鉴定年龄的材料，对其种群开展年龄结构与生长特性研究。研究结果表明，草海鲫鱼种群由1～5龄共5个年龄组组成，以低龄个体为主，1～3龄个体占96．34％，体长分布主要集中在90～150mm（81．97％），体质量分布主要集中在30～120g（83．89％）。群体总性比为♀∶♂＝8∶1，体长和鳞径呈幂函数关系，体长和体质量呈幂函数关系且幂指数接近3，属于匀速生长类型，因此可用VonBertalanffy方程来描述其生长特性，相关生长参数分别为：渐近体长L∞＝259．67mm，渐近体质量m∞＝481．94g，k＝0．1537，t0＝-0．6506龄，体质量生长拐点Ti＝6．28龄。与20世纪80年代相比，目前草海中鲫鱼的年龄组成简单，低龄个体比例偏大，种群数量下降，资源呈衰退状况。
이생활재고한습지초해중즉어적린편작위감정년령적재료，대기충군개전년령결구여생장특성연구。연구결과표명，초해즉어충군유1～5령공5개년령조조성，이저령개체위주，1～3령개체점96．34％，체장분포주요집중재90～150mm（81．97％），체질량분포주요집중재30～120g（83．89％）。군체총성비위♀∶♂＝8∶1，체장화린경정멱함수관계，체장화체질량정멱함수관계차멱지수접근3，속우균속생장류형，인차가용VonBertalanffy방정래묘술기생장특성，상관생장삼수분별위：점근체장L∞＝259．67mm，점근체질량m∞＝481．94g，k＝0．1537，t0＝-0．6506령，체질량생장괴점Ti＝6．28령。여20세기80년대상비，목전초해중즉어적년령조성간단，저령개체비례편대，충군수량하강，자원정쇠퇴상황。
The age and growth of crucian carp Cauratus auratus found in alpine wetland Caohai Lake , Guizhou province ,were studied by scales as annual ring method .The results showed that there were 5 age classes ranging from 1 to 5 in the population of the crucian carp in CaoHai Lake ,with preponderant age classes of 1-3 years old ,accounting for 96 .34% of the total population .Most of the crucian carp had body length of 52 .0-240 .0 mm ,primarily within the range between 90 .0 mm and 150 .0 mm (81 .97% ) ,and body weight ranging from 4 .8 g to 582 .4 g ,mainly between 30 g and 120 g (83 .89% ) .The ratio of ♀ to♂was found to be 8∶1 ,more females than males in the crucian carp in CaoHai Lake ,and length-weight power function relationship of the crucian carp showed the exponent b =s with isometrical growth by scale annulus .The growth of the crucian carp was described as Von Bertalanffy equation ,with L∞ =259 .67 mm ,m∞ =481 .94 g ,k=0 .1537 ,t0 = -0 .6506 and body weight growth inflexion point of 6 .28 .Com-pared with 1980’s ,the simple age structure of the crucian carps in CaoHai Lake is featured by more small individuals and the declined population in the resources .