Das S, Koner A, Barik A
Ecology Research Laboratory, Department of Zoology, The University of Burdwan, Burdwan - 713 104, West Bengal, India.
Bull Entomol Res. 2019 Aug;109(4):463-471. doi: 10.1017/S0007485318000731. Epub 2018 Oct 4.
We examined previous reports of Lema praeusta (Fab.) (Coleoptera: Chrysomelidae) as a minor pest of turmeric, eggplant, bottle gourd and pumpkin leaves, but no feeding damage by larvae and adults of L. praeusta were recorded by us on these leaves. We observed feeding by the larvae and adults of L. praeusta on ten species of Commelinaceae plants in no-choice tests. The biology, fecundity and life table parameters of L. praeusta on two Commelinaceae weeds, Commelina benghalensis L. and Murdannia nudiflora (L.) Brenan were determined under laboratory conditions (27 ± 1°C, 65 ± 5% RH and 12L:12D). Total larval development times of L. praeusta were 6.36 ± 0.07 and 7.28 ± 0.11 days (mean ± SE) on C. benghalensis and M. nudiflora, respectively. Adult females lived 106.25 ± 1.17 and 77.65 ± 0.91 days (mean ± SE) on C. benghalensis and M. nudiflora, respectively. Each female laid 272.95 ± 2.39 and 224 ± 1.74 eggs (mean ± SE) during a lifetime on C. benghalensis and M. nudiflora, respectively. The net reproductive rate (Ro), intrinsic rate of increase (rm), generation time (Tc), doubling time (DT) and finite rate of increase (λ) were 136.48, 0.14, 36.17, 5.10 and 1.41 on C. benghalensis, respectively, whereas Ro, rm, Tc, DT and λ were 112, 0.20, 23.64, 3.47 and 1.51 on M. nudiflora, respectively, suggesting that L. praeusta could be a potential biocontrol agent against C. benghalensis and M. nudiflora in the fields of rice, maize, sorghum, soybean, mung bean, peanut and cotton.
我们查阅了之前有关黄斑长跗萤叶甲（Lema praeusta (Fab.)）（鞘翅目：叶甲科）作为姜黄、茄子、葫芦和南瓜叶片次要害虫的报道，但我们并未记录到黄斑长跗萤叶甲的幼虫和成虫对这些叶片造成取食危害。在无选择试验中，我们观察到黄斑长跗萤叶甲的幼虫和成虫取食十种鸭跖草科植物。在实验室条件（27 ± 1°C、65 ± 5%相对湿度和12小时光照：12小时黑暗）下，测定了黄斑长跗萤叶甲在两种鸭跖草科杂草，即孟加拉鸭跖草（Commelina benghalensis L.）和裸花水竹叶（Murdannia nudiflora (L.) Brenan）上的生物学特性、繁殖力和生命表参数。黄斑长跗萤叶甲在孟加拉鸭跖草和裸花水竹叶上的幼虫总发育时间分别为6.36 ± 0.07天和7.28 ± 0.11天（平均值 ± 标准误）。成年雌虫在孟加拉鸭跖草和裸花水竹叶上的寿命分别为106.25 ± 1.17天和77.65 ± 0.91天（平均值 ± 标准误）。每只雌虫在其一生中，在孟加拉鸭跖草和裸花水竹叶上分别产卵272.95 ± 2.39粒和224 ± 1.74粒（平均值 ± 标准误）。在孟加拉鸭跖草上，净生殖率（Ro）、内禀增长率（rm）、世代时间（Tc）、加倍时间（DT）和周限增长率（λ）分别为136.48、0.14、36.17、5.10和1.41，而在裸花水竹叶上，Ro、rm、Tc、DT和λ分别为112、0.20、23.64、3.47和1.51，这表明黄斑长跗萤叶甲可能是稻田、玉米田、高粱田、大豆田、绿豆田、花生田和棉田防治孟加拉鸭跖草和裸花水竹叶的潜在生物防治剂。
