effect of Sampaguita (Jasminum sambac) leaf extract on Mosquito (Aedes aegypti) larvae The Researchers: Clifford Cruz Joseph Guillermo Raymart Leyson Daniel Manzanilla Samantha Bismonte Glory Tolentino INTRODUCTION Background of the Study Endemic in more than 100 countries cases of dengue fever doubled in Metro Manila INTRODUCTION Statement of the Problem • Is there a significant difference in the population of the larvae of mosquitoes between the different treatments? • Is there a significant difference
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the back of an abattoir. Surrounding that dam were millions of flies. He realised that these waste nutrients were in fact a natural feedstock for these flies. Drew’s comment was‚“Having as a young boy fished with a fly on the end of the line or a larvae on the end of a hook‚ I put two and two together and‚ with the enormous input of a number of collaborators here in South Africa and
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protection. This insect-resistant corn is the new Bt-corn and contains genetic material from the donor organism‚ a bacterium. Bacillus thuringiensis contains a protein that kills the larvae of Ostrinia nubilalis‚ European corn borers‚ but is harmless to other insects (Bessin‚ 1999). When the Bt is consumed by the larvae‚ toxins paralyze the insectfs intestines‚ eventually causing death (Peairs‚ 2001). A small material of this genetic material is added to the inserted into the Bt-corn and thus enables
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words (myiasis) to represent the “infestation of live human and vertebrate animals with dipterous larvae which feed on the host’s dead or living tissue‚ liquid body substances‚ or ingested food”(Kumar‚ Puri‚ Yadav‚ & Tyagi‚ 2014‚ p. 195). It wasn’t until later (1909) that Laurence coined the term ‘oral myiasis’ to describe the infestation of specifically the skin and mucosa of the mouth with larvae. (Maheshwari & Giridhar Naidu‚ 2010‚ p. 25) While oral myiasis is rare in humans (most myiasis is
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CHAPTER III METHODOLOGY Research Design In this study‚ an experimental design will be used to test the pesticidal effect of betel nut kernel extract on leaf miner larvae (L. trifolii) The researchers of this study used standard laboratory procedures concerning to the detection of the pesticidal activity of betel nut kernel extract. This study used (4) treatments of betel nut kernel extract‚ which were as follows: 1. T1 –betel nut kernel decoction 2. T2– crude kernel
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indicates that plant age was responsible for 25% of the infestation variability of T. absoluta larvae. It is well known that the older plant leaves are not suitable for feeding habits and spawning behavior for most of phytophagous insects. The rate of egg exclusion‚ proportion of females‚ the larval period and mortality appeared to be affected by plant age. A higher proportion of females‚ mortality of larvae and length of the larval period were obtained with older plants of Lycopersicon hirsutum f.
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REASONING AND INTERPRETATION – Practice questions 1. Understanding the ecological mechanism that causes extinction is fundamental to conservation as not all organisms are threatened by the same factors. A total of 1012 threatened bird species in 95 families were studied to see how they were threatened by different factors: · habitat loss · persecution by humans and introduced predators · other factors (introduced competitors‚ hybridization and disease) and unknown risk factors. Scientists investigated
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number of maggots in the mass and the temperature of the mass (the more maggots there are in mass the higher is the internal temperature of it). Then maggots were allowed to pupate and the time taken for every mass of maggots to pupate (until all larvae in the mass are pupated) was determined. This allowed us to conclude that the number of maggots in the mass and the development time has a negative correlation (as the number of maggots in mass the less time it takes them to pupate)‚ which proved
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efficacy of an emulsified concentrate of neem oil formulation (neem oil with polyoxyethylene ether‚ sorbitan dioleate and epichlorohydrin) developed by BMR & Company‚ Pune‚ India‚ was evaluated against late 3rd and early 4th instar larvae of different genera of mosquitoes. The larvae were exposed to different concentrations (0.5–5.0 ppm) of the
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project entitled Organic Syrup as Mosquito Larvae Killer focuses on lessening the rate of dengue victims. This experiment test if we can prevent mosquitoes to increase their numbers in a short period of time. This insect repellent is also an eco-friendly type that neither destroys nor affects the environment. Using this kind of repellent we assure that we can lessen the rate of mosquito larvae. a. Background of the Study. Organic Syrup as Larvae-Mosquito killer is an eco-friendly since it
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