水产学报2013，Vol.37Issue(2)：256-262,7.DOI:10.3724/SP.J.1231.2013.38256
慢性盐度胁迫对吉丽罗非鱼(尼罗罗非鱼♀×萨罗罗非鱼♂)及其两亲本耐盐性的影响
Effects to salt tolerance of GILI tilapia(O.niloticus × S.melanotheron)and its two parents in the chronic salinity stress experiment
摘要
Abstract
In order to further study salt tolerance performance of a hybrid by Oreochromis niloticus ( ♀ ) x Sarotherodon melanotheron (♂ ) which had been examined and approved by China National Aquaculture Variety Approval Committee as a new variety for aquaculture and named " GILI tilapia" in 2009, researches have been carried out to study the salt tolerance in the chronic salinity stress experiment to GILI tilapia and its two parents, the differences of salt tolerance performance of three kinds of tilapia are analysed, and the regression model between mortality of salt tolerance in the chronic salinity stress and death of time, death of salinity are established. The results of the study show that: (1)There are significant differences in capacity of salt tolerance among three kinds of tilapia, the performance of salt tolerance of GILI tilapia is close to S. Melanotheron ,it is much higher than O. Niloticus, the average death salinity of three kinds of tilapia when they are domesticated in salt are 57.9,66.7 and 18.5 respectively. (2)There are the greatest differences of death time domesticated among individuals in O. Niloticus, it is the least in 5. Melanotheron, it is medium in GILI tilapia. There are the most significant normal negative deviation in GILI tilapia and S. Melanotheron, there are the more values of outlier and extremum, O. Niloticus has a significant normal positive deviation, it has outlier values,no extremum values. (3)The regression relationships between the mortality of chronic salinity stress to salt and the death time, death salinity of three kinds of tilapia are fit for single-element regression model, the single-element regression model between the salt tolerance mortality (Y) and the domestication time of death (t)and salinity of death(s)of GILI tilapia are growth model Y = e(-7.694+0.031t) (R2 =0. 979) and quadratic model Y= 0.542 -0.037s +0.001 s2(R2 =0.950)respectively.关键词
吉丽罗非鱼/萨罗罗非鱼/尼罗罗非鱼/盐度胁迫/回归模型/耐盐性Key words
GILI tilapia/ Sarotherodon melanotheron/ Oreochromis niloticus/ the chronic salinity stress/regression model/salt tolerance分类
生物科学引用本文复制引用
李学军,郭瑄,聂国兴,孔祥会,乔志刚..慢性盐度胁迫对吉丽罗非鱼(尼罗罗非鱼♀×萨罗罗非鱼♂)及其两亲本耐盐性的影响[J].水产学报,2013,37(2):256-262,7.基金项目
国家自然科学基金项目(30972252) （30972252）
河南省水产养殖省级重点学科资助 （）
