正颤蚓的生长发育及繁殖生物学的研究
STUDIES ON THE GROWTH AND REPRODUCTION OF TUBIFEX TUBIFEX MLLER
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摘要: 在实验室饲养的条件下,研究了正颤蚓在15℃、20℃、25℃水温的生长发育和繁殖过程.结果表明正颤蚓从其受精卵在蚓茧内发育,孵出生长到产卵,在15℃水温需100-123d,在20℃水温需70-90d,在25℃水温需48-64d.蚓自蚓茧内孵出后的165d生长期内,其15℃、20℃、25℃水温的体重生长回归方程分别是:W=687/[1+13648·exp(-00612·t)];W=599/[1+1188·exp(-00918·t)];W=682/[1+13528·exp(-01389·t)].其15℃、20℃、25℃水温的体长生长回归方程分别是:L=583/[1+1358·exp(-00384·t)];L=513/[1+1183·exp(-00566·t)];L=544/[1+126·exp(-00872·t)].其15℃、20℃、25℃水温的体重与体长关系的回归方程分别是:W=31072·L1.9486;W=29228·L1.9781;W=26725·L1.9875.Abstract: The growth and reproduction of Tubifex tubifex have been studied in laboratory cultures at different water temperatures(15℃,20℃,25℃). The life cycle of T. tubifex, takes 100 to 123 days in experimental culture at 15℃,70 to 90 days at 20℃ and 48 to 64 days at 25℃. During the experimental period(165 days as maximum observed), the regression formula describing the growth of weight of animals at 15℃ is :W=6 87/[1+136.48·exp(-0.0612t)],at 20℃: W=5.99/[1+118.8·exp(-0.0918t)] and at 25℃: W=6 82/[1+135.28·exp(-0.1389t)]. The regression formula describing the growth of length of animals at 15℃ is: L=58.3/[1+13.58·exp(-0.0384t)], at 20℃: L=51.3/[1+ 11.83·exp(-0.0566t)] and at 25℃: L=54.4/[1+12.6·exp(-0.0872t)]. The regression formula describing the relationship between weight and length of animals at 15℃ is: W= 3.1072L1.9486, at 20℃: W=2.9228L1.9781 and at 25℃: W=2.6725L1.9875. In addition, the relationship between growth of animals and water temperature was discussed.
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Keywords:
- Oligochaeta /
- Aquatic Oligochaeta /
- Tubifex tubife
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