scholarly journals Glyphosate impairs learning in Aedes aegypti mosquito larvae at field-realistic doses

2018 ◽  
Vol 221 (20) ◽  
pp. jeb187518 ◽  
Author(s):  
Hugo Baglan ◽  
Claudio R. Lazzari ◽  
Fernando J. Guerrieri
Keyword(s):  
Aedes Aegypti ◽  
Mosquito Larvae

scholarly journals Effects of two formulations based on Bacillus thuringiensis subsp. israelensis on Aedes aegypti mosquito larvae under laboratory conditions

2008 ◽  
Vol 23 (4) ◽  
pp. 251-258
Author(s):  
Milenka Peric ◽  
Mirjana Prijovic ◽  
Goran Andric
Keyword(s):  
Bacillus Thuringiensis ◽  
Aedes Aegypti ◽  
Aqueous Suspension ◽  
Pure Water ◽  
Clay Content ◽  
Experimental Period ◽  
Mosquito Larvae ◽  
Water Dispersible ◽  
Bacillus Thuringiensis Subsp ◽  
Zero Time

Toxicity and persistence of two formulations based on Bacillus thuringiensis subsp. israelensis applied to Aedes aegypti mosquito larvae were tested under laborabory conditions. The formulations were: a) water dispersible granules (product VectoBac WDG), and b) aqueous suspension (product VectoBac 12AS). The effects of both products on mosquito larvae were tested immediately after their dilution in pure water (zero time) and in 1-, 2-, 8- and 13-day old solutions. The two products were also tested in mixtures of water and clay at a rate of 0.5 g clay/150 ml water immediately after product dilution, and in one-day old solutions containing 0.1 and 0.05 g of clay in the same amount of water. The product VectoBac WDG was persistent and highly effective against Ae. aegypti larvae in pure water after the longest experimental period of 13 days, and significantly more effective than VectoBac 12AS at equal rates of application. The effectiveness of VectoBac 12AS weakened significantly after 8 and 13 days of treatment, compared to the effects at zero time and in 1- and 2-day old solutions. High clay content in water significantly reduced the larvicidal effectiveness of both products, indicating its possible compromising role during product application in practice.

scholarly journals Bioefficacy of some insect growth regulators and plant extracts against mosquito larvae of Aedes aegypti

2019 ◽  
Vol 6 (1) ◽  
pp. 001-006
Author(s):  
Mohamd R. Al-Zahrani ◽  
Jazem A. Mahyoub ◽  
Khalid M. Al-Ghamdi ◽  
Habeeb M. Al-Solami
Keyword(s):  
Aedes Aegypti ◽  
Growth Regulators ◽  
Plant Extracts ◽  
Mosquito Larvae ◽  
Insect Growth Regulators ◽  
Insect Growth

scholarly journals The Toxicity of Srikaya Seed Granules (Annona squamosa L.) with Different Heating Temperatures Against the Larva of Aedes aegypti L.

BIOEDUKASI ◽  
2020 ◽  
pp. 1
Author(s):  
Rima Gloria Purwanto ◽  
Dwi Wahyuni ◽  
Joko Waluyo
Keyword(s):  
Aedes Aegypti ◽  
Mosquito Control ◽  
Heating Temperature ◽  
Probit Analysis ◽  
Mosquito Larvae ◽  
Annona Squamosa ◽  
Forest Region ◽  
Randomized Design ◽  
Significant Difference ◽  
Lower Temperature

Abstract: Aedes aegypti L. is a mosquito carrying dengue virus that causes dengue fever, especially in Southeast Asia which is a tropical rain forest region which is a habitat for mosquito growth. Aedes aegypti L. mosquito control is carried out by chemical means of fogging and using abate but this control actually causes Aedes aegypti L. mosquitoes to become resistant or immune to chemical drugs so that a new breakthrough is created by making bioinsecticides biologically to eradicate the Aedes aegypti L. mosquito. with characteristics that are environmentally friendly and do not kill non-target animals and cause the Aedes aegypti L. mosquito not to become resistant. To be able to realize this desire so that the sugar cane granules extract of Annona squamosa L. containing active compounds in the form of annonain and squamosin so that they are toxic to Aedes aegypti L. mosquito larvae. Further research is to test the heating temperature level of the granules of Annona squamosa L. extract temperature of 40 ° C and 60 ° C which is more deadly of Aedes aegypti L. mosquito larvae. This research method uses a completely randomized design with four repetitions. The temperature of 60 ° C uses concentrations of 1 ppm, 6 ppm, 12 ppm, 18 ppm, 24 ppm and 30 ppm. As for the temperature of 40 ° C using concentrations of 1 ppm, 7 ppm, 14 ppm, 21 ppm, 28 ppm, and 35 ppm, each temperature compared with aquadest and abate. Data analyzed using probit analysis to determine the LC50, then followed by a statistical test paired sample T-test with SPSS to find out a significant difference between heating temperatures of 40 ° C to 60 ° C. These results then show that a higher temperature of 60 ° C has a higher level of toxicity compared to a lower temperature of 40 ° C.

scholarly journals A comparison of aquaporin expression in mosquito larvae (Aedes aegypti) that develop in hypo-osmotic freshwater and iso-osmotic brackish water

PLoS ONE ◽  
2020 ◽  
Vol 15 (8) ◽  
pp. e0234892
Author(s):  
Lidiya Misyura ◽  
Elia Grieco Guardian ◽  
Andrea Claire Durant ◽  
Andrew Donini
Keyword(s):  
Aedes Aegypti ◽  
Brackish Water ◽  
Mosquito Larvae

The accumulation of radioactive cesium, phosphorus, strontium, and yttrium by mosquito larvae and its relevance to radiation dose

1972 ◽  
Vol 50 (6) ◽  
pp. 767-770
Author(s):  
A. G. Scott ◽  
J. E. Guthrie
Keyword(s):  
Radiation Dose ◽  
Aedes Aegypti ◽  
Dose Rate ◽  
Radioactive Cesium ◽  
Mosquito Larvae ◽  
Radionuclide Concentration ◽  
Internal Radiation ◽  
Stage Of Development ◽  
Apparent Concentration ◽  
The Individual

Aedes aegypti (L.) larvae were reared in solutions of 137Cs, 32P, and 90Sr + 90Y and the apparent concentration ratios of the individual radionuclides which were accumulated are reported. A consideration of the significance of accumulation to the internal radiation dose delivered to the larvae reveals that larvae reared in identical concentrations of a radionuclide did not receive the same dose, nor were they exposed to the greatest dose-rate at the same stage of development. The probable dose to larvae reared in radioactive solutions cannot be calculated solely from a knowledge of the radionuclide concentration in the rearing medium.

Pre-parasitic juveniles of Strelkovimermis spiculatus Poinar & Camino, 1986 (Nematoda: Mermithidae) predated upon by freshwater copepods (Crustacea: Copepoda)

Nematology ◽  
2003 ◽  
Vol 5 (6) ◽  
pp. 885-888 ◽  
Author(s):  
María Achinelly ◽  
María Micieli ◽  
Juan García
Keyword(s):  
Aedes Aegypti ◽  
Copepod Species ◽  
Mosquito Larvae ◽  
Laboratory Conditions ◽  
Freshwater Copepods ◽  
Mermithid Nematode

Abstract Five copepod species, Acantocyclops robustus, Macrocyclops albidus, Mesocyclops annulatus, Thermocyclops sp. (all Cyclopoidea) and Argyrodiaptomus bergi (Calanoidea), were evaluated under laboratory conditions as potential predators of preparasites of the mermithid nematode Strelkovimermis spiculatus. Adults of all five copepod species consumed 70-100% of the preparasites within 24 h. Copepodids and adults of M. annulatus predated upon 93 and 100% of the nematode pre-parasites, respectively. An average of 197 pre-parasites was daily predated upon by an adult M. annulatus. Copepod density affected prevalence and intensity of S. spiculatus on mosquito larvae. Prevalence and intensity of S. spiculatus on Aedes aegypti larvae was reduced from 98% and 2.8 nematodes per larva in control containers free of copepods to 61.4% and 1.4 nematodes per larva in containers with 50 M. annulatus females per l.

Mosquito Populations at Ibadan in Nigeria

1956 ◽  
Vol 47 (1) ◽  
pp. 125-136 ◽  
Author(s):  
Kenneth Mellanby
Keyword(s):  
Aedes Aegypti ◽  
Anopheles Gambiae ◽  
Mosquito Larvae ◽  
University College

Mosquito larvae derived from eggs laid in earthenware pots in various habitats on the site of University College, Ibadan, in Nigeria were collected over a period of 26 months.Anopheles gambiae Giles, Aëdes aegypti (L.) and Culex (Lutzia) tigripes Grp. were the species most frequently collected.The relation of these results to the fluctuation in the populations of the species concerned is discussed. It seems unlikely that pot collections give results which can be directly related to the numbers of mosquitos in the field, but they can elucidate questions of mosquito biology and behaviour.

scholarly journals Efektivitas Ekstrak Daun Sirih (Piper betle L) dan Ekstrak Bawang Putih (Allium sativum) terhadap Mortalitas Larva Nyamuk Aedes aegypti

bionature ◽  
2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Amirullah Amirullah ◽  
Nurhayu Malik ◽  
Rosmaya Rosmaya
Keyword(s):  
Aedes Aegypti ◽  
Endemic Area ◽  
Leaf Extract ◽  
Allium Sativum ◽  
Larval Mortality ◽  
Hemorrhagic Fever ◽  
Garlic Extract ◽  
Piper Betle ◽  
Mosquito Larvae ◽  
Betel Leaf

Abstract. The study of the efficacy of betel leaf extract (Piper betle L.) and garlic extract (Allium sativum) on the mortality of Aedes aegypti mosquito larvae was carried out at the Zoology Laboratory of the Faculty of Mathematics and Natural Sciences, Halu Oleo Kendari University. Aedes aegypti mosquito larvae were obtained from the rearing of F2 from Aedes aegypti eggs that were taken by ovitrap from in Kambu Village, Kendari City, which is an endemic area of Dengue Hemorrhagic Fever (DHF). Extrac of betel leaf (Piper betle L.) and garlic extract (Allium sativum) at concentrations of 1.0%, 2.0% and 3.0% respectively and their combinations were given to Aedes aegypti larvae (L4). The results showed that the highest larval mortality (88%) occurred after 24 hours of exposure to betel leaf extract (Piper betle L.) at a concentration of 3%, whereas with garlic extract (Allium sativum) the highest larval mortality (98%) occurred at concentration 3 %, and for the highest larval mortality (99%) found in a combination of 3% betel leaf extract (Piper betle L.) and 3% garlic extract (Allium sativum). Based on WHO (2009), the most effective treatment for killing Aedes aegyti larvae is 3% garlic (Allium sativum) extract and a combination of 3% betel leaf extract (Piper betle L.) and 3% garlic extract (Allium sativum).Keywords:  Biopesticide, Mortality, Aedes aegypti, betle leaf (Piper betle L.), garlic (Allium sativum).

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