钉螺卵在恒温环境中发育零点和有效积温的研究  被引量:18

DEVELOPMENTAL ZERO AND EFFECTIVE ACCUMULATED TEMPERATURE OF ONCOME LANIA EGGS UNDER CONSTANT TEMPERATURE

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作  者:洪青标[1] 姜玉骥[1] 杨坤[1] 奚伟萍[1] 孙乐平[1] 黄轶昕[1] 周晓农[2] 

机构地区:[1]江苏省血吸虫病防治研究所,无锡214064 [2]中国疾病预防控制中心寄生虫病预防控制所

出  处:《中国血吸虫病防治杂志》2004年第6期432-435,共4页Chinese Journal of Schistosomiasis Control

基  金:国家自然科学基金资助 (No:3 0 0 70 684)~~

摘  要:目的 研究钉螺卵在不同恒温环境中的发育零点和有效积温。方法 将钉螺卵置于不同的恒温环境中 ,观察其发育历期与积温 ,采用拟合模型方程法求出螺卵发育的零点温度 ;按有效积温法则 K =N (T- C) ,计算螺卵发育的有效积温。结果 钉螺卵在 15~ 30℃环境中的平均发育历期为 (2 7.2 9± 17.2 9) d。螺卵的发育零点为 11.79℃ ;高温临界温度为 38.2 2℃ ;平均发育积温和有效积温分别为 (5 5 7.76± 198.95 )日度和 (2 36 .0 2± 6 8.2 0 )日度。结论 螺卵的发育速率随环境温度的升高而加快 ,但温度过高对螺卵的发育有抑制作用 ,2 7℃左右为钉螺卵发育的最适温度 ;螺卵发育所需的有效积温随温度的升高而增加。Objective To determine the de ve lopmental zero and effective accumulated temperature of Oncomela nia eggs under con stant temperature. Methods The eggs were cultur ed under different constant temperature, and their development duration and effe ctive accumulated temperature were studied. The zero accumulated temperature (℃ ) was obtained by using an estimation mode, and the effective accumulated temp erature was obtained by effective accumulated mode of K=N(T-C). [WT5”H Z] Results The average development duration was (27.29±17 .2 9) d under 15-30 ℃, the development zero temperature was 11.79 ℃ and 38.22 ℃ u nder low and high temperature respectively, and the average development temperat ure and effective accumulated temperature were (557.76±198.95) DD and(236 .02 ±68.20) DD.Conclusion The suitable developme nt temperature of eggs is 27 ℃, the development speed and effective accumulated t e mperature of eggs increases with the temperature under given condition, but too high temperature may have negative impact on the development of eggs. The resul t can be considered as the basic biological parameter of the snail.

关 键 词:钉螺卵 发育零点 有效积温 

分 类 号:R383.24[医药卫生—医学寄生虫学]

 

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