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用~(14)C(NaH~(14)CO_3)和~(35)S(~(35)S-甲硫氨酸)标志扁藻及菱形藻来探讨双齿许水溞与咸水丰年虫的摄食和吸收问题,得到如下结果: 在一定的饵料密度范围内,清滤率随着藻类密度的增大而下降,在藻类密度增至某值后即稳定在一较低的水平上。 吸收率随藻类密度的增大而增大,并在某密度下达到最大值,此后就保持不变。我们称这一密度值为最适密度。 清滤率,摄食率和吸收率随着浮游动物的生长发育而增大,许水溞自挠足幼体到成体及丰年虫在体长7—10mm到性成熟时(10—14mm),清滤率,摄食率和吸收率均明显地增大。 吸收效率随着饵料密度的增大而降低,并在某一密度下稳定于一个较低的水平上。 当饵料密度过高时,将产生过剩摄食。
In this study, Platycladus orientalis and Rhizochy matsutake were inoculated with ~ (14) C (NaH ~ (14) CO_3) and ~ (35) S ~ ~ 35 ~ And absorption problems, the following results were obtained. Within a certain range of feed densities, the rate of filtration decreased with the increase of algae density and stabilized at a lower level after algae density increased to a certain value. Absorption rate increases with increasing density of algae, and reaches a maximum at a certain density, then remains unchanged. We call this density the optimal density. The rate of filtration, the rate of uptake and the rate of absorption increased with the growth of zooplankton, and the rate of water absorption from juvenile to adult and Artemia was about 7-10mm in body length to 10-14mm in sexual maturity, Ingestion rate and absorption rate were significantly increased. Absorption efficiency decreases with increasing feed density and settles to a lower level at some density. When the food density is too high, it will produce excess food intake.