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首页> 外文期刊>Environmental toxicology and chemistry >FIELD ASSESSMENT OF TOXIC EFFECTS ON REPRODUCTION IN THE EARTHWORMS APORRECTODEA LONGA AND APORRECTODEA ROSEA
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FIELD ASSESSMENT OF TOXIC EFFECTS ON REPRODUCTION IN THE EARTHWORMS APORRECTODEA LONGA AND APORRECTODEA ROSEA

机译：实地评估龙舌兰和紫花苜蓿的生殖毒性作用

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摘要

The aim of the present study was to estimate the in situ cocoon production in grassland of two earthworm species, Aporrectodea longa and A. rosea, in relation to application dose of Benomyl. The method used to estimate cocoon production was based on a detailed knowledge of the influence of temperature on development [R(T)] of earthworm cocoons, including the two species in this study. Soil temperature was measured throughout the study (May 5-June 6, 1997), and on June 6, the density of cocoons was estimated. The sampled cocoons were incubated in the laboratory and their hatching distribution was recorded. Based on R(T)] the average development time in the field of cocoons produced on May 5 was predicted, and the hatched cocoons could thus be scored as either produced during the study period or before. This made it possible to estimate the density of cocoons produced during the study. The density of adults was also estimated by soil sampling during the study, and finally the reproductive rate could be calculated as density of cocoons divided by density of adults. In control plots, the reproduction of A. longa was estimated to be 2.5 ± 0.7 (mean ± SEM; n = 4) viable cocoons/adult during the 32-d study. In plots treated with 0.5 and l.0 kg Benomyl (active ingredient [AI])/ha, a 70 reduction of the reproductive rate was observed, but this was only statistically significant at the highest dose. In control plots, the reproductive rate of A. rosea was estimated to be 6.05 ± 0.8 cocoons/adult during the study. Also in this species, there was a drastic decrease in reproduction,
机译：本研究的目的是估计与苯菌灵的施用剂量有关的两种earth在草地上的原位茧生产。用于估计茧产量的方法是基于对温度对worm茧发育[R（T）]的影响的详细了解，包括本研究中的两个物种。在整个研究中（1997年5月5日至6月6日）测量了土壤温度，并在6月6日估算了茧的密度。将采样的茧在实验室中温育并记录其孵化分布。基于R（T）]，可以预测5月5日产生的茧的平均发育时间，因此可以将孵出的茧评分为研究期间或之前产生的茧。这使得估计研究过程中产生的茧的密度成为可能。在研究过程中还通过土壤采样估算了成年人的密度，最后可以将繁殖率计算为茧的密度除以成年人的密度。在对照样地中，在32天研究中，长曲霉的繁殖率估计为2.5±0.7（平均值±SEM； n = 4）活茧/成虫。在以0.5和1.0千克苯菌灵（活性成分[AI]）/公顷处理的地块中，观察到生殖速率降低了70％，但这仅在最高剂量下具有统计学意义。在对照样地中，在研究过程中，玫瑰蔷薇的繁殖率估计为6.05±0.8茧/成人。同样在这个物种中，繁殖也急剧下降，

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