International Journal of Tropical Insect Science ( IF 1.2 ) Pub Date : 2021-05-10 , DOI: 10.1007/s42690-021-00541-4 Rodrigo de Carvalho Brito , Lúcia da Silva Fontes , Paulo Henrique Soares da Silva , Carolina de Sousa Santana , Douglas Rafael e Silva Barbosa
Cowpea (Vigna unguiculata) is an important crop as a source of basic protein for populations in tropical countries, generating profit after the processing and storage of grains. However, the attack of pests such as cowpea weevil Callosobruchus maculatus (Coleoptera: Chrysomelidae: Bruchinae) can limit the production of cowpea, with the insect causing qualitative and quantitative losses to the grains. Its control is commonly performed with fumigant phosphine, which due to its almost exclusive use, has selected resistant populations of insects, causing control failure. This way, the present research aimed to investigate the effects of essential oils of Betula lenta, Cinnamomum cassia, Citrus aurantium var. Amara and Acorus calamus in the treatment of cowpea grains [Vigna unguiculata (L.) Walp.] under storage conditions, for the management of Callosobruchus maculatus. The effects of essential oils were investigated through contact, fumigation, and repellency tests. The LC50 found in the test of contact was 0.61; 0.63; 0.64 and 22.98 μL/20 g of beans for the oils of A. calamus, B. lenta, C. cassia, and C. auratium var. Amara, respectively. Based on the data, the number of eggs and insects that emerged decreased as the concentration of essential oils increased. The LC50 values in the fumigation test were estimated at 5.16; 8.24; 25.84 and 35.31 μL/L of air for A oils. calamus, B. lenta, C. auratium var. Amara and C. cassia, respectively. In the repellency test, all oils acted like antagonists to C. maculatus biology, but the latter presented deterrence against the oviposition and the emergence of adults in most concentrations. These findings indicate that essential oils can be used to manage C. maculatus.
中文翻译:
来自Betula lenta,肉桂,Citrus aurantium var的精油。Amara和Acorus calamus作为杀虫剂来对抗bio豆象鼻虫
pea豆(Vigna unguiculata)是重要的作物,是热带国家人口的基本蛋白质来源,在谷物的加工和存储后产生了利润。然而,诸如cow豆象鼻象甲(Callosobruchus maculatus)(鞘翅目:金眼科:Bruchinae)等害虫的侵袭会限制of豆的产量,该昆虫对谷物造成定性和定量损失。通常用熏蒸的磷化氢来控制它,由于它几乎是排他性的使用,因此选择了抗性昆虫种群,从而导致控制失败。通过这种方式,本研究旨在研究桦木,肉桂,桂皮香精油的功效。阿马拉和菖蒲在豇豆晶粒的治疗[豇豆(L.)Walp。]贮存条件下,对管理纹豆象。通过接触,熏蒸和排斥测试研究了香精油的效果。接触测试中的LC 50为0.61;0.63;0.64和22.98μL/20克豆的油的菖蒲,B.桦,C.肉桂,和C. auratium变种。分别为Amara。根据数据,随着精油浓度的增加,出现的卵和虫的数量减少。LC 50熏蒸试验的数值估计为5.16;8.24; A油的空气浓度为25.84和35.31μL/ L。菖蒲,B.桦,C. auratium变种。Amara和肉桂。在排斥性测试中,所有的油都像斑纹梭菌生物学的拮抗剂一样起作用,但后者在大多数浓度下都对产卵和成虫的出现产生了威慑作用。这些发现表明,精油可用于治疗斑纹梭菌。