Seitz Alfred
Lehrstuhl für tierökologie der Universität Bayreuth, Postfach 3008, D-8580, Bayreuth, Germany.
Oecologia. 1984 Apr;62(1):94-96. doi: 10.1007/BF00377380.
Daphnia hyalina and Daphnia cucullata were kept in flow-through chambers in lake water (I), water from mass cultures of D. hyalina (II) and water from mass cultures of D. cucullata (III). A good correlation between body length and clutch size of the Daphnia was found in all cases. The regression lines of the different treatments were compared with respect to different slopes and different intercepts. D. hyalina showed the same reaction to medium II and III, but a lower regression coefficient and higher intercept in medium I. In contrast D. cucullata showed the same reaction to medium I and II, but a higher regression coefficient in medium III.
透明溞和头盔溞分别饲养于流动式实验槽中，实验槽中的水分别为湖水（I）、透明溞大规模培养用水（II）和头盔溞大规模培养用水（III）。在所有情况下，均发现溞的体长与卵块大小之间存在良好的相关性。针对不同的斜率和截距，对不同处理的回归线进行了比较。透明溞对培养基II和III表现出相同的反应，但在培养基I中的回归系数较低且截距较高。相比之下，头盔溞对培养基I和II表现出相同的反应，但在培养基III中的回归系数较高。
