CAJ | 학술논문

以青虾（ Macrobrachium nipponense）幼虾平均体长（13.55±1.96） mm为样本，研究了对7种单色光谱、全色光谱的趋光特性和性别间的差异。实验水簇箱设可更换滤光片的固定光源和捕获趋光幼虾网具，记录5 min内的趋光频率并捕获30 min时的趋光幼虾样本，检测所获样本体长与性别。实验结果表明：（1）410 nm和全色光谱组的幼虾趋光频率最高，555 nm组最低；（2）随光照时间延长幼虾趋光行为减弱，表现出光感疲劳现象；（3）450 nm组的捕获样本中，雌性数占80％，雌雄比4.0达到实验最大值，全色光组的雌性数仅占42.3％，雌雄比0.73为实验最小值；（4）610 nm组捕获样本平均体长最大，410 nm组的平均体长最小，表明发育早期幼虾对短波长敏感，而发育中期的幼虾则对长波长敏感。
이청하（ Macrobrachium nipponense）유하평균체장（13.55±1.96） mm위양본，연구료대7충단색광보、전색광보적추광특성화성별간적차이。실험수족상설가경환려광편적고정광원화포획추광유하망구，기록5 min내적추광빈솔병포획30 min시적추광유하양본，검측소획양본체장여성별。실험결과표명：（1）410 nm화전색광보조적유하추광빈솔최고，555 nm조최저；（2）수광조시간연장유하추광행위감약，표현출광감피로현상；（3）450 nm조적포획양본중，자성수점80％，자웅비4.0체도실험최대치，전색광조적자성수부점42.3％，자웅비0.73위실험최소치；（4）610 nm조포획양본평균체장최대，410 nm조적평균체장최소，표명발육조기유하대단파장민감，이발육중기적유하칙대장파장민감。
The phototactic behaviour and gender difference were studied when juvenile Macrobrachium nipponense was in response to seven kinds of monochromatic spectrums and panchromatic spectrum .Fixed illuminant with replaceable optical filter and shrimp capture net were assembled in aquarium tanks .The phototactic frequency of juvenile M.nipponense within 5 min was recorded and juvenile M.nipponense at 30 min under the given spectrum were captured to measure body length and identify sex.As the results showed, the highest phototactic frequency was detected under 410 nm monochromatic spectrum or panchromatic spectrum; while the lowest phototactic frequency was detected under 555 nm monochromatic spectrum.As the illumination time prolonged , the phototactic ability of juvenile M.nipponense decreased and photorecep-tive fatigue phenomenon was showed .In 450 nm group, 80% of the capturing juvenile M.nipponense were female which obtained the maximum female/male ratio.In panchromatic spectrum group , only 42.3% of juvenile M.nipponense were female, which got the minimum ratio of female and male (0.73).In addition, the maximum mean body length was detec-ted in 610nm group and the minimum mean body length was found in 410 nm group, which indicated that juvenile M.nipponense was more sensitive to short wave in early developmental stage while more sensitive to long wave in middle de -velopmental stage .