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Eco-Climatic Factors Influencing the Distribution of Black Ants (Carebara vidua) in Western Kenya 影响肯尼亚西部黑蚁分布的生态气候因素
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.103017
Davine Atieno Ondede, Dennis O. Ochuodho, M. Ayieko
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引用次数: 0
Natural Enemies and Pest Control in Field-Grown Crop in Southern Senegal 塞内加尔南部大田作物的天敌及病虫害防治
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.104021
Etienne Tendeng, Babacar Labou, Elhadji Serigne Sylla, A. Balde, M. Diatte, O. Seydi, I. Ndiaye, P. Diop, S. O. Sène, S. Djiba, K. Diarra
Crop pests are a permanent threat to horticultural production. Several control methods are recommended for their control, including biological control. This method based on the use of natural enemies is not well established. The objective of this study was to assess the diversity and abundance of natural enemies of crop pests. A survey of crops associated with pests was carried out on 144 fields in southern Senegal to measure the diversity and abundance of natural enemies of various crop pests, determine the native parasitoid complex and assess parasitism rates. Ecological indices were calculated to assess the diversity of natural enemies. A total of 25 natural enemy species were identified, including 15 parasitoids and 10 predators. Predatory Hemiptera and Parasitoid Hymenoptera were high biodiversity. The parasitism rates vary between 0 and 50% depending on the abundance of pests and parasitoid species. Knowledge of the diversity of natural enemies and the understanding of trophic interactions with pests are important in the development of biological crop protection in order to preserve resilience in agroecosystems.
农作物害虫是对园艺生产的永久威胁。建议采用几种防治方法,包括生物防治。这种以使用天敌为基础的方法还没有很好地建立起来。本研究的目的是评估作物害虫天敌的多样性和丰度。在塞内加尔南部144块农田开展了一项与害虫相关的作物调查,以测量各种作物害虫天敌的多样性和丰度,确定原生拟寄生虫复合体并评估寄生率。计算生态指数,评价天敌的多样性。共鉴定出天敌25种,其中拟寄生物15种,天敌10种。掠食性半翅目和寄生性膜翅目生物多样性较高。寄生率在0 - 50%之间,取决于害虫和拟寄生虫种类的丰度。了解天敌的多样性和了解与害虫的营养相互作用对作物生物保护的发展至关重要,以保持农业生态系统的恢复力。
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引用次数: 2
Bioefficacy of Plectranthus kirbii Powder and Extracts on Stored Cowpea Pest Callosobruchus maculatus (Coleoptera: Chrysomelidae) 鸡胸草散及提取物对豇豆储存性害虫斑斑小蛾的生物药效研究
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.103015
Jean Wini Goudoungou, Félicité Arindo, Katamssadan Haman Tofel, Raoul Barry Borkeum, Jean Pierre Abdou, Elias Nchiwan Nukenine
Cowpea seed constitutes an important source of proteins for populations in Sub-Saharan Africa. But this food resource is heavily damaged by cowpea beetle Callosobruchus maculatus. The control of that pest is mainly carried out by using synthetic insecticides. Despite the efficacy of this method, it caused environmental and health problems. Therefore, the search for alternative methods is vivaciously needed. In this issue, the bio-efficacy of Plectranthus kirbii extracts was assessed on C. maculatus regarding adult mortality, suppression of population and grain damage as well as seed viability preservation and repellency. The leaf powder and aqueous extracts of the plant were tested at 2, 4, 8 and 16 g/kg on bruchid adult for toxicity and damage bioas-says. Repellency test was carried out using the plant aqueous, methanolic and ethyl acetate extracts at 0.5, 1, 2 and 4 mg/cm 2 . The seed viability was eva-luated using seeds preserved for three months at the single concentration of 16 g/kg of each plant extract. Significant mortality of cowpea extracts were classified as the class III repellent product, while aqueous extract ranged as class IV in repellency. Considering these findings, the extracts of P. kirbii could favourably replace the synthetic insecticides used in the cowpea protection during storage.
豇豆种子是撒哈拉以南非洲人口的重要蛋白质来源。但这一食物资源受到豇豆甲虫(Callosobruchus maculatus)严重破坏。这种害虫的防治主要是使用合成杀虫剂。尽管这种方法有效,但它造成了环境和健康问题。因此,迫切需要寻找替代方法。本研究主要从成虫死亡率、种群抑制和籽粒损害、种子活力保存和驱避等方面评价了百川草提取物对黄斑螟的生物功效。分别以2、4、8和16 g/kg剂量对野鼠成虫进行了叶粉和水提物的毒性和损伤生物学试验。采用0.5、1、2、4 mg/ cm2的水提液、甲醇提液和乙酸乙酯提液进行驱避试验。以每种植物提取物16 g/kg的单一浓度保存种子3个月,评价种子活力。豇豆提取物的显著致死率被归为III类驱避产品,而水提取物的驱避效果为IV类。综上所述,豇豆提取物可以很好地替代合成杀虫剂用于豇豆贮藏期的保护。
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引用次数: 0
Potential Insecticidal Effect of a Wasp (Polistes dominulus) and a Bee (Apis mellifera) Venoms in Controlling Spodoptera littoralis 一种黄蜂(Polistes dominulus)和一种蜜蜂(Apis mellifera)毒液对沿海夜蛾的潜在杀虫效果
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.104022
Reham Z. Sadek, Shereen M. El Banna, F. Semida, S. Zalat
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引用次数: 1
Importance of Bemisia tabaci Forecasting Technology: A Review 烟粉虱预测技术的重要性综述
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.102011
Shunxiao Liu, Zhifang Yang, V. Volodymyr
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引用次数: 1
Efficacy of the Microbial Larvicide VectoMax®G against Anopheles gambiae s.l. and Culex spp. Larvae under Laboratory and Open Field Trial Experiments in the City of Yaoundé, Cameroon 微生物杀蚊剂VectoMax®G对冈比亚按蚊和库蚊幼虫的室内和露天试验研究
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.101003
K. Edmond, Foko Dadji Gisele Aurelie, Sonhafouo-Chiana Nadège, Bamou Roland, Djamouko-Djonkam Landre, Talipouo Abdou, Delogko Serges, N. Flobert, A. Parfait, Wondji Charles Sinclair, Antonio-Nkondjio Christophe
Background: With the rapid expansion of insecticide resistance limiting the effectiveness of insecticide-based vector control interventions, integrated control strategies associating larviciding could be appropriate to improve current control efforts. The present experimental study assesses laboratory and field efficacy of the larvicide VectoMaxG on Anopheline and Culicine larval stages in Yaoundé. Methods: The effect of the larvicide VectoMaxG, a combination of Bacillus thuringiensis var. israelensis (Bti) and Bacillus sphaericus (Bs), on larval development was assessed during both laboratory and open field trial experiments. Laboratory experiments permitted the evaluation of five different concentrations with four replicates/experiments. Laboratory experiments were conducted with Anopheles coluzzii “Ngousso” and Culex quinquefasciatus laboratory strains. Open field trials were conducted using sixteen plastic containers with a diameter of 0.31 m buried in an array of four rows with 4 containers each. Distance between rows and between containers in a row was 1 meter. This experiment permitted to test the How to cite this paper: Edmond, K., Aurelie, F.D.G., Nadège, S.-C., Roland, B., Landre, D.-D., Abdou, T., Serges, D., Flobert, N., Parfait, A.-A., Sinclair, W.C. and Christophe, A.-N. (2022) Efficacy of the Microbial Larvicide VectoMax®G against Anopheles gambiae s.l. and Culex spp. Larvae under Laboratory and Open Field Trial Experiments in the City of Yaoundé, Cameroon. Advances in Entomology, 10, 34-51. https://doi.org/10.4236/ae.2022.101003 Received: October 15, 2021 Accepted: November 27, 2021 Published: November 30, 2021
背景:随着杀虫剂耐药性的迅速扩大限制了基于杀虫剂的媒介控制干预措施的有效性,结合杀幼虫的综合控制策略可能是适当的,以改善目前的控制工作。本实验研究评估了杀幼虫剂VectoMaxG对云南省按蚊和烹饪幼虫期的室内和现场效果。方法:采用室内试验和露天试验的方法,评价苏云金芽孢杆菌(Bacillus thuringiensis var. israelensis, Bti)和球孢芽孢杆菌(Bacillus sphaericus, Bs)联合配制的杀幼虫剂VectoMaxG对幼虫发育的影响。实验室实验允许通过四次重复/实验对五种不同浓度进行评估。用科鲁兹按蚊“恩古索”和致倦库蚊实验室菌株进行实验。野外试验采用16个直径为0.31 m的塑料容器,每排埋4个,共4排。行与行之间和一排容器之间的距离为1米。这个实验允许测试如何引用这篇论文:Edmond, K, Aurelie, f.d.g., nad, s . c。,罗兰,B,兰德,d。, Abdou, T., Serges, D., Flobert, N., Parfait, a .。辛克莱,W.C.和克里斯托夫,a.n。(2022)微生物杀蚊剂VectoMax®G对冈比亚按蚊和库蚊幼虫的室内和露天试验。昆虫学进展,2010,34 -51。https://doi.org/10.4236/ae.2022.101003收稿日期:2021年10月15日接收日期:2021年11月27日发布日期:2021年11月30日
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引用次数: 2
Analysis of Feed Preference of Edible Termites (Isoptera) on Selected Plants and Their Crude Extract Phytochemistry 食用白蚁(等翅目)对特定植物的取食偏好及其粗提物的植物化学分析
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.101004
C. M. Ameka, B. Muok, H. Oyieke
Termites are social insects that inhabit colonies in the soil. Termites feed on a wide range of plants found within diverse habitats of Luanda Sub-County. This study aimed at assessing feed preference of edible termites and analyzing their phytochemical composition. Termites were exposed to ten different test plants in their natural habitats to assess feed preference. Forty-seven study sites were selected as they had high termite abundance from previous studies. The test plants were Grevillea robusta, sugarcane, maize, blue citronella grass, Eucalyptus, mango, avocado, neem, bamboo and a mixture of all the ten plants. Small pits were dug in the ground where the ten treatments were placed and replicated four times each. The test plants were placed in the evening then covered with soil block. The number of termites feeding on the test plants was counted after 12 hours the following day. There were separate trials for crushed and uncrushed feed substrates. The feed substrates that showed high feed preference was selected for phytochemical analysis. The plants whose crude extract was obtained were Grevillea robusta, bamboo, Eucalyptus, cypress, maize and sugarcane. The results for this study were analysed using one-way ANOVA. The study revealed that crushed feed substrates had a high level of feed preference by termites p < 0.05. The mixture of all the feed substrates also showed high termite preference and a mean and SE of 676.500 ± 41.7 a . Phytochemical analysis of the crude plant extracts revealed that Eucalyptus had the highest number of phytochemicals present 9 out of 12. The identified phytochemicals were saponins, tannins, alkaloids, resins, cardiac glycosides, flavones.
白蚁是群居昆虫,聚居在土壤中。白蚁以罗安达县不同生境中的多种植物为食。本研究旨在研究食用白蚁对饲料的偏好,并分析其植物化学成分。白蚁在其自然栖息地暴露于10种不同的试验植物,以评估其饲料偏好。选择了47个研究地点,因为这些地点在以前的研究中白蚁的丰度很高。试验植物是绿葛、甘蔗、玉米、蓝香茅、桉树、芒果、鳄梨、楝树、竹子和这十种植物的混合物。在地面上挖了小坑,在那里放置了十种处理方法,每种方法重复四次。试验植株在晚上放置,然后用土块覆盖。第2天12小时后计数取食试验植物的白蚁数。对粉碎和未粉碎的饲料基质分别进行了试验。选取具有较高饲料偏好的饲料基质进行植物化学分析。提取粗提物的植物有绿柳、竹子、桉树、柏树、玉米和甘蔗。本研究结果采用单因素方差分析。研究表明,粉碎的饲料基质对白蚁的饲料偏好程度较高,p < 0.05。混合饲料对白蚁的偏好程度也较高,平均SE为676.500±41.7 a。植物化学分析表明,桉树的12种植物化学物质中有9种含量最高。鉴定出的植物化学物质有皂苷、单宁、生物碱、树脂、心苷、黄酮等。
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引用次数: 1
Morphological Identification of Edible Termites (Isoptera) in Luanda Sub-County, Kenya 肯尼亚罗安达县食用白蚁(等翅目)形态鉴定
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.102012
Ameka Caleb, Oyieke Helida, Elisheba Amolo, Muok Benard
Termites are social insects that live in colonies underground. Globally, there are 3000 termite species, of which 39% are found in Africa. Termites are used as food and livestock feed in most communities of the world. In Kenya, termites are consumed by many communities, especially in the western region. Termite species diversity across different parts of the Luanda sub-county was established as there are many edible and non-edible species in the area. This study assessed the species diversity of termites in Luanda sub-county, and characterized them morphologically. Termites were sampled in Luanda sub-county using the line transect method. The collected termites were preserved in tubes containing 70% Ethanol. The preserved samples were taken to the National Museums of Kenya for morphological identification up to species level. Species richness of each habitat was analyzed for diversity (Shannon-Wiener) index and Shannon index by using Vegan package version 1.16 32 in R. The differences in species composition and diversity of termites were analyzed using one-way ANOVA. Morphological identification recorded seven species, namely, Macrotermes herus, Macrotermes spp1, Macrotermes sp1, Pseudocanthotermes grandiceps, Macrotermes bellicosus, Macrotermes spp2 and Pseudocanthotermes militaris. The results of this study showed that the Shannon diversity index H was 0.3606 while Simpson index D was 0.20644, which implied a high species diversity of termites in Luanda sub-county a leading producer of edible termites in Kenya.
白蚁是群居昆虫,生活在地下。全球共有3000种白蚁,其中39%分布在非洲。在世界上大多数地区,白蚁被用作食物和牲畜饲料。在肯尼亚,白蚁被许多社区食用,特别是在西部地区。在罗安达副县的不同地区建立了白蚁物种多样性,因为该地区有许多可食用和不可食用的物种。本研究对罗安达副县白蚁的物种多样性进行了评估,并对其进行了形态学表征。采用样线法对罗安达副县进行白蚁取样。采集的白蚁保存在含70%乙醇的试管中。保存下来的样本被送到肯尼亚国家博物馆进行物种级别的形态学鉴定。各生境物种丰富度的多样性(Shannon- wiener)指数和Shannon指数采用R. Vegan package version 1.16 32进行分析。白蚁物种组成和多样性的差异采用单因素方差分析。形态鉴定录得大白蚁(Macrotermes herus)、大白蚁(Macrotermes spp1)、大白蚁(Macrotermes sp1)、大白蚁(Pseudocanthotermes grandiceps)、大白蚁(Macrotermes bellicosus)、大白蚁(Macrotermes spp2)和军国大白蚁(Pseudocanthotermes militaris) 7种。结果表明:Shannon多样性指数H为0.3606,Simpson指数D为0.20644,表明罗安达副县是肯尼亚食用白蚁的主产地,具有较高的物种多样性。
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引用次数: 1
Management of the Prickly Pear Mealy Bug, Dactylopius opuntiae Using Bio-Insecticide in Morocco 生物杀虫剂对摩洛哥刺梨粉蚧的治理
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.104019
Aissam El Finti, Rachida El Boullani, A. Zahidi, A. El Mousadik
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引用次数: 1
Status of Highly Hazardous Pesticides and Their Mitigation Measures in Asia 亚洲高度危险农药的现状及其缓解措施
Pub Date : 2022-01-01 DOI: 10.4236/ae.2022.101002
Yubak Dhoj GC, Bhakta R. Palikhe, Baogen Gu, Grenier Beatrice
Pesticide is one of the major inputs in modern agriculture and its uses are increasing annually. Pesticides are seen as inherently benign, in the same way that medicines are. Many local languages even use the same word for “pesti-cide” and “medicine”. Along with the increasing consumption of pesticides, Highly Hazardous Pesticides (HHPs), which are more toxic are still in widespread use in Asia and constitute a substantial challenge to human health and the environment especially in low- and middle-income countries with less resources, training and capacities to deal with them. Reducing the risks posed by HHPs has become a priority in various international chemicals management policies, and many countries have started taking action accordingly. The objective of the paper is to establish the national status of the use of HHPs in Asia in line with FAO/WHO criteria for HHPs and encourage deliberate consideration of mitigation options for effective management of HHPs. This report is based on the nationally registered pesticide active ingredients and other related information obtained from Pesticide Registration Authori-ties of 13 Asian countries and research reports of different national and international journals. There are currently about 3557 pesticide products (active ingredients) registered in 13 Asian countries to control pests on crops and for public health uses, and 214 HHPs among the list of registered pesticides still in use in these Asian countries. An analysis of the list of registered formulated products revealed that from academia and research organizations to construct a baseline data which may be helpful to tone down the HHP situation in the country.
农药是现代农业的主要投入品之一,其使用量逐年增加。杀虫剂和药物一样,被视为天生无害的。许多当地语言甚至用同一个词来表示“杀疫剂”和“药物”。随着农药消费量的增加,毒性更大的高度危险农药在亚洲仍在广泛使用,对人类健康和环境构成重大挑战,特别是在资源、培训和能力较少的低收入和中等收入国家。减少HHPs带来的风险已成为各种国际化学品管理政策的优先事项,许多国家已开始采取相应行动。该文件的目的是根据粮农组织/世卫组织的HHPs标准确定亚洲使用HHPs的国家状况,并鼓励慎重考虑缓解HHPs的备选方案,以有效管理HHPs。本报告是根据从13个亚洲国家农药登记主管部门获得的农药有效成分国家注册及其他相关信息,以及不同国家和国际期刊的研究报告。目前在13个亚洲国家登记的农药产品(有效成分)约有3557种,用于控制作物害虫和公共卫生用途,在这些亚洲国家仍在使用的登记农药清单中,有214种HHPs。对已注册配方产品清单的分析表明,学术界和研究组织需要构建基线数据,这可能有助于缓和该国的HHP情况。
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引用次数: 7
期刊
昆虫学(英文)
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