CAJ | 학술논문

选择21％抑食肼可湿性粉剂为受试农药，研究其对大型溞（Daphnia magna）的急性毒性和21 d慢性毒性效应，观察大型溞各个繁殖和生长指标变化，建立毒物剂量-反应关系，并寻找其中的敏感生物学指标。急性毒性试验结果表明，21％抑食肼可湿性粉剂对大型溞的48 h-EC50为0.94 mg·L-1；慢性毒性试验结果表明，抑食肼对大型溞的初次蜕壳时间、蜕壳次数、产卵时间、产幼溞数和产幼溞胎数等都有显著的影响，其中，0.135 mg·L-1的暴露浓度可以显著减少大型溞蜕壳次数、产幼溞总数量和产幼溞胎数，综合各个繁殖毒性终点指标，21 d无可见效应浓度（NOEC）为0.045 mg·L-1。此外，研究还发现低至0.015 mg·L-1的抑食肼暴露21 d可以使母溞体长显著性下降。研究结果表明，抑食肼胁迫在一定程度上对大型溞的生长和繁殖具有抑制效应。
선택21％억식정가습성분제위수시농약，연구기대대형소（Daphnia magna）적급성독성화21 d만성독성효응，관찰대형소각개번식화생장지표변화，건립독물제량-반응관계，병심조기중적민감생물학지표。급성독성시험결과표명，21％억식정가습성분제대대형소적48 h-EC50위0.94 mg·L-1；만성독성시험결과표명，억식정대대형소적초차세각시간、세각차수、산란시간、산유소수화산유소태수등도유현저적영향，기중，0.135 mg·L-1적폭로농도가이현저감소대형소세각차수、산유소총수량화산유소태수，종합각개번식독성종점지표，21 d무가견효응농도（NOEC）위0.045 mg·L-1。차외，연구환발현저지0.015 mg·L-1적억식정폭로21 d가이사모소체장현저성하강。연구결과표명，억식정협박재일정정도상대대형소적생장화번식구유억제효응。
In the present study, 21%RH-5849 wettable powder was selected to assess the acute toxicity to Daphnia magna and the chronic effects on the growth and reproduction of Daphnia magna after 21 d exposure. The acute toxicity test showed that 21%RH-5849 wettable powder had high acute toxicity against Daphnia magna and 48 h-EC50 was 0.94 mg·L-1. The 21%RH-5849 wettable powder also had sig-nificant chronic impacts on the first molting time, the number of molting, offspring number and brood number of Daphnia magna. Exposure to RH-5849 at the concentration of 0.135 mg·L-1 significantly lowered the number of molting, the number of total offsprings and broods per female of Daphnia magna. The 21 d non-observed effect concentration(NOEC)of the 21%RH-5849 wettable powder against the repro-duction of Daphnia magna was 0.045 mg·L-1. In addition, exposure to RH-5849 at the concentration of 0.015 mg·L-1 significantly reduced the body length of the female. This study demonstrates that RH-5849 has inhibiting effects on the growth and reproduction of Daphnia magna.