Behavior and reproduction of the rotifer Brachionus plicatilis species complex under different light wavelengths and intensities
Behavior and reproduction of the rotifer Brachionus plicatilis species complex under different light wavelengths and intensities
复制标题
不同光波长和强度下褶皱臂尾轮虫复合体的行为和繁殖
DOI：
10.1002/iroh.201301715
复制
发表时间：
2014
影响因子：
1.9
通讯作者：
Atsushi Hagiwara
中科院分区：
文献类型：
--
作者：
Hee‐Jin Kim;Chihona Sawada;Atsushi Hagiwara
研究了光照对褶皱臂尾轮虫种复合体（B. stricto（s. s.）和曼氏臂尾轮虫（Brachionus manjavacas）。这样做是为了了解光线如何影响这些物种，以便我们可以利用这些知识来建立更有效的水产养殖协议。我们使用四种不同的光波长（白色，峰值在460和570 nm;蓝色在470 nm;绿色在525 nm;红色在660 nm）和四种强度（即，0.5-30.0 W/m2）。使用显微分光光度法，我们确定这两种臂尾轮虫的眼点吸收的蓝光和绿色光是红光的5.5倍。褶皱S.在较低光强下，在白色、蓝色和绿色光下表现出正趋光性，但在所有光强（0.5、6.2、15.0和30.0 W/m2）下均不表现出趋光性。在B. manjavacasand没有不同的mictic，amictic女性，男性轮虫。种群增长率B.褶皱S.黑暗条件下比白色光条件下高1.1-1.2倍。在3.8和6.2 W/m2的所有光波长下，种群增长率均无显著差异。另一方面，在0.5和1.6 W/m2下的种群增长率在蓝光下最低。根据这些结果，光的波长和强度都影响轮虫的种群增长，而轮虫的种群增长又可能受到轮虫的波长依赖性趋光性的影响。
We investigated the influence of light on phototactic behavior and reproduction in two species of rotifer from theBrachionus plicatilisspecies complex (B. plicatilissensu stricto (s. s.) andBrachionus manjavacas). This was done to understand how light effects these species so that we might use this knowledge to establish a more efficient aquaculture protocol. We used four different light wavelengths (white, with peaks at 460 and 570 nm; blue at 470 nm; green at 525 nm; and red at 660 nm) and four intensities (i.e., 0.5–30.0 W/m2). Using micro‐spectrophotometry we determined that eyespots of these twoBrachionusspecies absorbed blue and green light 5.5 times more than red light.B. plicatiliss. s. showed positive phototaxis under white, blue, and green light at lower light intensities, but no phototaxis under red light at all intensities (0.5, 6.2, 15.0, and 30.0 W/m2). Similar patterns of phototaxis were observed inB. manjavacasand did not differ among mictic, amictic females, and male rotifers. Population growth rate ofB. plicatiliss. s. under dark condition was 1.1–1.2 times higher than that under white light condition. No significant differences were observed in population growth rate at 3.8 and 6.2 W/m2at all light wavelengths. On the other hand, population growth rates at 0.5 and 1.6 W/m2were the lowest under blue light. According to these results, both wavelength and intensity of light affect the population growth of rotifers, which in turn may be influenced by the rotifers' wavelength‐dependent phototaxis.