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首页> 外文期刊>Journal of Plant Protection Research >SUITABILITY OF CENTELLA ASIATICA (PEGAGA) AS A FOOD SOURCE FOR REARING SPODOPTERA LITURA (F.) (LEPIDOPTERA: NOCTUIDAE) UNDER LABORATORY CONDITIONS
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SUITABILITY OF CENTELLA ASIATICA (PEGAGA) AS A FOOD SOURCE FOR REARING SPODOPTERA LITURA (F.) (LEPIDOPTERA: NOCTUIDAE) UNDER LABORATORY CONDITIONS

机译：实验室条件下适宜作为食物来源的百日草（PEGAGA）的适宜性（鳞翅目：夜蛾科）

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摘要

When conducting entomological research, it is necessary to have a sufficient quantity of the desired pest. One of the pests commonly used in research is Spodoptera litura. Mass rearing of herbivorous caterpillars like S. litura requires large amountsof a suitable food source. Hence, the use of an easy-to-grow host plant would be most practical and reasonable. Centella asiatica known as 'pegaga' grows easily, produces plenty of leaves, and is available throughout the year in Malaysia. The suitabilityof C. asiatica as a food source for S. litura was evaluated by studying the biology of this pest on excised C. asiatica leaves, under laboratory conditions. S. litura completed its whole life cycle in 29 to 35 days. The mean pupal weight and the averagenumber of eggs laid by a single female were 0.341 g and 1,930 eggs, respectively. Daily monitoring of the larval development stages as well as analysis on the width of head capsules, revealed the existence of six instars during the larval stages of S. litura. The cumulative survival rate for immature developmental stages was 80%, while the stage-specific survivorship was over 90%. This study demonstrated the use of 'pegaga' as a suitable new food source for when rearing S. litura larvae in the laboratory.
机译：进行昆虫学研究时，必须有足够数量的所需害虫。研究中常用的害虫之一是斜纹夜蛾。大量饲养草食毛毛虫，如斜纹夜蛾，需要大量合适的食物来源。因此，使用易于生长的寄主植物将是最实际和合理的。积雪草（Centella asiatica）被称为“ pegaga”，易于生长，可产生大量叶子，并且一年四季均可在马来西亚使用。在实验室条件下，通过研究切下的积雪草叶子上的害虫生物学特性，评估了积雪草作为斜纹夜蛾食物来源的适宜性。斜纹夜蛾在29至35天内完成了整个生命周期。单身雌性的平均p重和平均产卵数分别为0.341 g和1,930个卵。对幼虫发育阶段的每日监测以及对头部包囊宽度的分析表明，在斜纹夜蛾的幼虫阶段中存在六龄。不成熟发育阶段的累积生存率为80％，而特定阶段的生存率则超过90％。这项研究表明，在实验室饲养斜纹夜蛾幼虫时，将“ pegaga”用作合适的新食物来源。

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