摘要
匙吻鲟仔鱼（全长0.78～5.70cm）、稚鱼（全长5．71～16、40cm）生长阶段全长（L,cm）与日龄（T，d）具显著的线性关系，日均增长稚鱼（均值0.243cm／d）略大于仔鱼（均值0.205cm／d），回归方程为仔鱼L＝0143＋0.211T（n=6，3≤T≤25，r=0．998P＜001）、稚鱼L=-0．754＋0．245T（n=6，26≤T≤73，r=3．999。P＜0.01），二回归方程差异显著（t=2.31P＜0.05）；体重（w，g）与日龄（T，d）保持幂函数关系，日均增长（g/d）稚鱼（均值0.215）明显大于仔鱼（均值0.037），回归方程为仔鱼w=0．052×10(-3)×T(2.1154)（n=6，3≤T≤25r=0998，P＜001），稚鱼w=2.036×10(-4)×T(2.5280)（n=6，26≤T≤73，r=0．999，P＜001），二方程差异显著（t=316P＜0.05）。仔、稚鱼期全长（L、，cm）与体重（w，g）回归方程为仔鱼w=0.0128L(2.575)（n=6，r=0.995,＜0.01），稚鱼w=0.0142L(2.412)（n=6，r-0997，P＜0.01），二方程差异显著（t=2．38，P＜0.05）。重庆地区夏季水温（26～30℃）显著高于适温（20-22℃）条件下匙吻鲟仔、稚鱼生长速度仍能接近原产地，表明匙吻更具较强的适温能力。
The total length of Larva (total length 0. 78 -5. 70cm) and Juvenile(total length 5. 71-16. 40cm) keep notable linear relation with their age. Average growth a day in juvenile (0.243cm/d) is a little bigger than that in larva. Regressive equation in larvais L = 0. 343 + 0. 2117(n=6, 3 ≤T≤25, r = 0. 998, p ＜0. 01 ). Twoequation have marked difference Body weight keeppewer series with their age. Averege body weight growth in juvenile (0. 2159/d) is notale biggerthan that in larva (0. 0379/d). Regressive equations in larva is W = 1. 052 ×10（-）3 ×T（2.1154) (n = 6,3≤7≤25, r = 0. 998, p＜ 0. 01 ) and that in juvenile is W = 2. 036 × 10(-4)×T(2.5280)(n = 6, 26≤7≤73, r = 0. 999, p ＜ 0. 01 ). Two equations have notable difference. Regressive equation between totallengTh and body weight in larva is W = 0. 128 L(2.575)(n = 6, r = 0. 995, p＜0. 01 ) and that in juverile is W = 1. 052×10(-3)×T(2.1154)(n = 6,, r = 0. 997, p＜ 0. 01), they have notable difference (f =2. 33, p＜ 0. 05). Water temperature in Summer in Chongqing(26 -30℃ ) is marked higher thanSuitable temperature of American paddlefish. but growth of the fish still access to that in nativeplace. It presents that American can be cultured in chongqing.
出处
《水产学杂志》
CAS
1997年第2期20-24,共5页
Chinese Journal of Fisheries
基金
四川省科委九五攻关项目
关键词
匙吻鲟
仔鱼
稚鱼
全长
体重
日龄
生长特征
American paddlefish Larva juveniletotal length body weight age
