CAJ | 학술논문

为了获得印度北部赣达(Ganga)盆地河流中野生卡特拉(鱾)种群的年龄结构和重要生长参数,对该鱼的年龄和生长进行了研究.鳞片取自商业捕捞和实验室饲养的样品.根据研究分析,该鱼最大年龄可达8龄;巴吉拉蒂河(Bhagirathi R.)的种群平均体长为521.51 mm,退算体长为288.9-1132.3 mm;旁遮普邦(Punjab)Satluj河种群平均体长为641.6 mm,退算体长为335.4-1096.08 mm.2龄时,种群线性生长率(Cl)和体重增加率(Cw)表现出迅速下降的趋势.其它生长参数值(Clt)也呈现快速下降.退算体长差异(ANOVA)分析显示,生活在赣达盆地不同流域中的种群,1+-4+龄组的长度差异较明显(P<0.05),高龄组(5+-8+)差异不显著.根据本项研究结果,提出了对印度北部赣达盆地相关河流中生活的野生卡特拉(鱾)种群资源持续利用的对策.
위료획득인도북부공체(Ganga)분지하류중야생잡특랍(기)충군적년령결구화중요생장삼수,대해어적년령화생장진행료연구.린편취자상업포로화실험실사양적양품.근거연구분석,해어최대년령가체8령;파길랍체하(Bhagirathi R.)적충군평균체장위521.51 mm,퇴산체장위288.9-1132.3 mm;방차보방(Punjab)Satluj하충군평균체장위641.6 mm,퇴산체장위335.4-1096.08 mm.2령시,충군선성생장솔(Cl)화체중증가솔(Cw)표현출신속하강적추세.기타생장삼수치(Clt)야정현쾌속하강.퇴산체장차이(ANOVA)분석현시,생활재공체분지불동류역중적충군,1+-4+령조적장도차이교명현(P<0.05),고령조(5+-8+)차이불현저.근거본항연구결과,제출료대인도북부공체분지상관하류중생활적야생잡특랍(기)충군자원지속이용적대책.
In the present communication age and growth of Catla catla (Hamilton-Buchanan 1822) was studied in order to obtain the information on its age structure and important growth parameters in the wild populations of rivers of the Ganga basin in the Northern India. Scales were collected from commercial and experimental catch. Based on the analysis we found C.catla with a maximum age group 8+ from river Bhagirathi where mean total length (TL) was 521.51 mm and the back calculated length were ranged from 288.9 to 1132.3 mm and from river Satluj, Punjab with a mean total length of 641.6 mm and back calculated length data were ranged from 335.4 to 1096.08 mm. The specific rate of linear growth (Cl) and specific rate of weight increase (Cw) of the entire population exhibited sharp decreasing trend in 2+ age group. The value of other growth parameter (Clt) showed an abrupt decreasing trend. Analyses of variances (ANOVA) of the back-calculated length data showed significant variation (P<0.05) in length attainment between the different drainages of river Ganga basin for the age groups up to 1+ to 4+ only, however, no significant variations was observed for the higher age groups (5+ to 8+). Based on this study strategies can be made for sustainable exploitation of the Catla catla from wild population with reference to rivers of Ganga basin in the Northern India.