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饥饿对波部东风螺幼虫存活、生长及变态的影响
Effect of starvation on survival, growth and metamorphosis for larvae of Babylomia formosae habei
【摘要】 对波部东风螺幼虫进行不同时间的初次投饵实验,测定了饥饿对波部东风螺幼虫存活、生长及变态的影响。幼虫自身存在一个耐受饥饿不可逆点,实验测得约为105h。饥饿条件下,卵黄作为幼虫早期的内源性营养,对维持幼虫的生存和生长都起着相当重要的作用。36h的短时间饥饿并不影响幼虫的生长,但随着饥饿时间的延长,幼虫的存活率、变态率显著地降低,生长速度明显变慢;幼虫自发变态时间随着饥饿时间的延长而延长,二者呈线性关系;饥饿对变态幼虫大小的影响并不明显。
【Abstract】 To determine effect of starvation on survival, growth and metamorphosis of larvae of Babylonia formosae habei, the experiment of different initial feeding times was conducted. The larva of B. formosae habei was a species of marine planktotriphic life, which possess stronger tolerance of starvation. Moreover, there was a point of not return (PNR) at starvation of tolerance. in larva itself, and the PNR was about 105 h by the experimental test. As endogenous endogenous, yolk plays important role in maintaining survival and growth of the early stage in larval life at starvation. With time of starvation prolonged, both survival rate and metamorphic rate decreased significantly, and growth rate apparently slowed. However, there was no apparent influence of starvation on growth of the larvae within 36h. Between the days of metamorphosis and the time of starvation, there was a linear relationship. There was no apparent effect of starvation on she of the metamorphosed larvae.
【Key words】 Babylonia formosae habei; larvae; starvation; growth; survival; metamorphs?;
- 【文献出处】 水产学报 ,Journal of Fisheries of China , 编辑部邮箱 ,2000年06期
- 【分类号】Q954
- 【被引频次】16
- 【下载频次】163