49 results for “larvae”

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Research ArticleOpen accessEvery word in the titleIn-vitro Larvicidal Potentials of Achillea Extracts on Strongylid LarvaeLyudmila Lider, Yerlan Suleimen, Gulnur Mamytbekova et al.Strongylid infections remain among the most widespread and clinically significant helminthoses in horses, with increasing concerns regarding anthelmintic resistance. Against this background, we investigated the in-vitro larvicidal activity of Achillea salicifolia and Achillea setacea extracts against strongylid larvae. We evaluated concentrations of 20, 30, and 40% at exposure times of 0.5, 1, 2, and 4 h (n = 3). Larval … …American Journal of Animal and Veterinary Sciences, Vol. 21, Issue 2 · 21 Jul 2026 · 1,032 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleOptimization of Hydrolysis Conditions for Obtaining Antithrombotic Peptides from Tenebrio Molitor LarvaeFangyuan Chen, Han Jiang, Yini Gan et al.Tenebrio molitor larvae was hydrolyzed by pepsin and trypsin for preparing high antithrombotic activity hydrolysate. The significant variables were selected according to the Plackett-Burman design and further optimized by the Response Surface Methodology (RSM). Four factors, including substrate concentration, pepsin digestion time, pepsin amount and trypsin amount, respectively, influenced significantly on the hydrolysis effectiveness. The best hydrolysis conditions obtained using … …American Journal of Biochemistry and Biotechnology, Vol. 15, Issue 2 · 20 May 2019 · 8,722 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleStudy on the Effect of Allylisothiocyanate Formulations on Three Lepidopterous Insect Larvae, the Diamond Back Moth, Plutella xylostella (L.), the Small Cabbage White Butterfly, Pieris rapae (L.) and Tobacco Cut Worm, Spodoptera litura FabrE. M. Eltayeb, Guo-An Zhang, Jiu-Gao Xie, Feng-Yu MiProblem statement: The toxicity of seven of Allylisothiocyanate (AITC) formulations, AITC pure and in mixture with cypermethrin and chlorpyrifos, was evaluated using spray application and fumigation method against the diamondback moth, Plutella xylostella (L.), the small cabbage white butterfly, Pieris rapae (L.) and the tobacco cut worm, Spodoptera litura Fabr. Approach: Response varied according to insect species, specific formulation and … …American Journal of Environmental Sciences, Vol. 6, Issue 2 · 30 Apr 2010 · 6,988 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleEffect of Processing Methods on Nutrient Composition of Black Soldier Fly Larvae Reared on Slaughterhouse Waste and Rice BranNurul Isnaini, Faizal AndriBlack Soldier Fly (BSF) larvae have emerged as a sustainable and nutrient-dense resource for livestock feed, primarily due to their high protein and lipid contents. However, the nutritional composition of BSF larvae is substantially influenced by the processing methods. This study aimed to evaluate the effect of five processing methods (room dried, sun dried, oven dried, microwave dried, and roasted) … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 3 · 4 Dec 2025 · 3,071 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleDiversity of Cellulolytic Bacteria from the Digestive Tract of Oryctes rhinoceros LarvaeAhmad Faisal Nasution, Erman Munir, Dwi Suryanto et al.Lignocellulose is a ubiquitous biopolymer that, once degraded into monomeric products, could be used to produce a wide range of products. Bioconversion using indigenous microbes could be a solution to the large array of cellulosic waste and it could be sourced from exotic organisms such as Asiatic rhinoceros beetle (Oryctes rhinoceros L). This study aimed to cellulolytic bacteria from the … …OnLine Journal of Biological Sciences, Vol. 23, Issue 4 · 2 Sep 2023 · 4,972 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleIsolation and Identification of Local Soil Bacteria with Larvicidal Activities Against Aedes aegypti LarvaeNaif Mohammed Alotaibi, Saber Abdelkader Saïdi, Mohamed Mohamed Roushdy et al.Mosquito-borne diseases caused by infected mosquitoes like dengue fever, Zika fever, Chikungunya and malaria are spread to humans through biting causing disease epidemics all over the world. This indicates the necessity for new mosquito-borne disease control strategies in Saudi Arabia and internationally. This study evaluated the potential of local bacteria isolated from the soil of the Rahat region of Makkah, … …OnLine Journal of Biological Sciences, Vol. 22, Issue 4 · 14 Dec 2022 · 5,411 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleEffects of Extended-Rotifers Inclusion and Live Food-Enrichment with Probiotics on the Survival, Metamorphosis, Development Time and Growth of Mud Crab, Scylla paramamosain (Estampador) LarvaeQuy Moc Ong, Ravi Fotedar, Thy Thi Truong HoThe present larval nutrition study was conducted to evaluate the effects of feeding probiotic-enriched rotifers inclusion mixed with Artemia until zoeal stages 4 (Z4) and Z5 on the survival, metamorphosis, development time and growth of mud crabs, Scylla paramamosain larvae. The efficiency of the feeding regime was tested by two-factor analysis. A 4×2 factorial experimental design with eight combinations of … …American Journal of Applied Sciences, Vol. 15, Issue 7 · 29 Sep 2018 · 8,155 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleA Study of the Essential Oils of Four Sudanese Accessions of Basil (Ocimum basilicum L.) Against Anopheles Mosquito LarvaeAzhari H. Nour, Salah A. Elhussein, Nour A. Osman et al.Problem statement: Certain basil essential oils were claimed to have a larvicidal activity towards mosquito's larvae. To test this claim the essential oils of four accessions of basil grown in Sudan were selected and tested for Anopheles larvae. Malaria is the major health problem in the Sudan and the whole country is now considered endemic, with varying degrees, about 35,000 … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 8,825 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleDetermining the Effect of Sediment Resuspension from the Activity of Phenoloxidase in Penaeid Shrimp Post LarvaeNapaporn Leadprathom, Pornpimon Teangtarn, Kedsiri Ing-kanorn et al.Problem statement: Regular sediment resuspension or dredging in coastal zones can induce stress in a postlaval penaeid shrimp, which affects immune response. Phenoloxidase is a significant enzyme in the penaeid shrimp’s immune system which, when used as a biomarker, can serve as an early warning sign in ecological systems. The stress response of shrimp postlarvae from sediment reuspension was analyzed … …American Journal of Environmental Sciences, Vol. 8, Issue 3 · 12 Jun 2012 · 7,089 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsLarvicidal Activity of Spondias purpurea (Sineguelas) Leaf and Hylocereus costaricensis (Dragon Fruit) Stem Extracts Against Aedes aegyptiAlfredo V. Corpuz, Nigell Mikhail A. Gallardo, Ace Danielle C. AveroThe study determined the larvicidal activity of the different concentrations of Spondias purpurea and Hylocereus costaricensis extracts by measuring percent mortality in Aedes aegypti larvae, a primary vector of dengue and other arboviral diseases. The hypothesis proposed that combining both extracts would yield greater larvicidal activity due to potential synergistic interactions. Ethanolic extraction was used to isolate a wide array … …OnLine Journal of Biological Sciences, Vol. 25, Issue 3 · 20 Nov 2025 · 2,417 accessesView PDF Cite