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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Phototactic behavior of the marine harpacticoid copepod Tigriopus japonicus related to developmental stages under various light conditions
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Phototactic behavior of the marine harpacticoid copepod Tigriopus japonicus related to developmental stages under various light conditions

机译：海洋鱼缸桡足蛋白萜座的光学行为与各种轻条件下发育阶段有关

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摘要

Marine harpacticoid copepod Tigriopus japonicus is commonly distributed in the tide-pools and shows benthic behavior. To determine its phototactic behavior, the movement pattern was investigated with different light wavelengths (white, peaks at 460 and 570 nm; blue at 470 nm; green at 525 nm; and red at 660 nm) and intensities (0.5, 2.0, 3.5, 5.0, 15.0 W/m(2)) related to developmental stages i.e., nauplius and adult. The eyespot of the two developmental groups efficiently absorbed the light wavelength from 400 to 550 nm, while the level of absorbance was different. For the horizontal phototactic behavior, nauplii showed negative phototaxis with the all tested light wavelengths and intensities ranging 0.5-5.0 W/m(2), while they lost phototactic movement at 15 W/m(2) of all conducted light wavelengths except with the red light shown negative phototaxis. The adults showed negative phototaxis at 0.5 and 3.5 W/m(2), while positive phototaxis at 2.0 W/m(2) regardless of light wavelengths. The vertical phototactic movement was only monitored with adults. At 2.0 and 3.0 W/m(2), 40% of adults showed planktonic behavior with the blue light. The results elucidate that T. japonicus has different patterns of phototaxis related to developmental stages which can be used to manipulate its distribution for dispersal.
机译：海洋胡椒蛋白桡足类Tigriopus japonicus通常在潮汐池中分布并显示出底栖行为。为了确定其光学行为，采用不同的光波长（白色，460和570nm的白色，峰值为470nm;绿色为525nm的蓝色，温度（0.5,2.0，3.5，绿色）和温度下的运动模式;强度（0.5,2.0，3.5，绿色）和红色， 5.0,15.0 w / m（2））与发育阶段有关，即Nauplius和成人。两个发展组的眼睛有效地吸收400至550nm的光波长，而吸光度水平不同。对于水平光学行为，Nauplii显示负光辐射，其中所有测试的光波长和强度范围为0.5-5.0W / m（2），而它们在除外的所有导电光波长的15 W / m（2）中失去光学运动。除了红灯显示负光辐射。成年人在0.5和3.5W / m（2）时显示阴性光图，而无论光波长，2.0W / m（2）的正光辐射。垂直光或仅使用成人监测。在2.0和3.0 w / m（2），> 40％的成年人显示浮游行为与蓝光。结果阐明了T.Paponicus具有与发育阶段有关的不同模式，可用于操纵其分散的分布。

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