scholarly journals Assessment of the predatory capacity on mosquito larvae of Jenynsia multidentata (Anablepidae) in presence of vegetation under laboratory conditions

2019 ◽  
Vol 109 ◽  
Author(s):  
Maria I. Garcia ◽  
Albérico F. Murúa ◽  
Leonardo M. Díaz-Nieto ◽  
Juan C. Acosta ◽  
Claudia de Los Rios ◽  
...  
Keyword(s):  
Aquatic Vegetation ◽  
Biocontrol Agent ◽  
Mosquito Control ◽  
Larval Density ◽  
Mosquito Larvae ◽  
Natural Environments ◽  
Larvivorous Fish ◽  
Laboratory Conditions ◽  
Predatory Capacity ◽  
Jenynsia Multidentata

ABSTRACT Larvivorous fish have been studied as potential biocontrol agents of mosquito larvae and pupae through their trophic interactions. The use of native fish for mosquito control may have benefits for both aquatic biodiversity and human health. Evaluating the effect of vegetation on the predatory efficacy is fundamental to determine if this species can be used as a biocontrol agent. With the aim of evaluating Jenynsia multidentata (Jenyns, 1842) as a biocontrol agent of Culex pipiens Linnaeus, 1758, we tested its predatory capacity in the presence or absence of aquatic vegetation under laboratory conditions. Two independent experiments were conducted. Larval consumption at a density of 60 larvae (6 larvae/l) was significantly reduced with the vegetation increased. On the other hand, when the larval density was 120 (12 larvae/l), the predatory capacity of J. multidentata did not vary in the presence or absence of vegetation. This result indicated that vegetation effect on consumption could be related to prey density, since at the higher density of prey the probability of predator-prey encounter might be increased. Jenynsia multidentata is a good consumer in presence of vegetation and could be used as a potential biocontrol agent of mosquito larvae in natural environments with similar characteristics to the ones tested in these experiments.

Control of mosquito larvae in the port city of Assab by an indigenous larvivorous fish, Aphanius dispar

Acta Tropica ◽  
1992 ◽  
Vol 52 (2-3) ◽  
pp. 155-166 ◽  
Author(s):  
M. Fletcher ◽  
Awash Teklehaimanot ◽  
Girma Yemane
Keyword(s):  
Mosquito Larvae ◽  
Port City ◽  
Larvivorous Fish

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 Larvicidal effect of some natural products on mosquito and some aquatic predators in Gezira State, Sudan: Field assessment

2021 ◽  
Vol 3 (2) ◽  
pp. 078-082
Author(s):  
Abdelmonem Eltiyab Houmida Ali ◽  
Mutaman Ali A. Kehail
Keyword(s):  
Natural Products ◽  
Mosquito Control ◽  
Mosquito Larvae ◽  
Biological Control Agents ◽  
Stagnant Water ◽  
Source Reduction ◽  
Breeding Sites ◽  
Field Assessment ◽  
Neem Leaves ◽  
Aquatic Predators

There are many methods used for mosquito control. Depending on the situation, source reduction (removing stagnant water), bio-control (importing natural predators), trapping, and insecticides to kill larvae or adults may be used. Some aquatic predators were reputed as biological control agents for mosquito larvae. Hence they have to be considered when experimenting on the lethal effects of any material on mosquito larvae. The objectives of this study were to study the effects of neem leaves and usher latex against Anopheles and Culex larvae and some of their aquatic predators (hemipteran boatman (HB), tadpole (T), swimming beetle larvae (SBL) and adult (SBA) and mayfly naiad (MF)) in some breeding sites around Wad Medani Town. Gezira State, Sudan. Two villages were selected for conducting this study. The count of the mosquito larvae and the aquatic predators continued for four days from applying natural products. The results showed that, mosquito’s larvae were affected more than the aquatic by Neem leaves and Ushar latex. The study of the microclimates in the breeding sites will help to correlate toxicity to any level of any environmental factor.

scholarly journals Surveillance of Mosquitoes Larva at Selected Areas of Mymensingh District in Bangladesh

2015 ◽  
Vol 13 (1) ◽  
pp. 79-88
Author(s):  
T Farjana ◽  
MS Ahmmed ◽  
TF Khanom ◽  
N Alam ◽  
N Begum
Keyword(s):  
Mosquito Control ◽  
Animal Health ◽  
Dairy Farm ◽  
Breeding Site ◽  
Botanical Garden ◽  
Mosquito Larvae ◽  
Site Preferences ◽  
Breeding Habitats ◽  
Larval Survey ◽  
Surrounding Areas

Mosquito borne diseases have a great impact on human and animal health throughout the world including Bangladesh. An entomological survey was conducted at the Bangladesh Agricultural University (BAU) campus and its surrounding areas from January to June, 2013 to identify the mosquito larvae and to investigate the different breeding site preferences of mosquitoes. Mosquito larvae were collected using dipper, ladle spoon, dropper and pipette from rice field, botanical garden, dairy farm, poultry farm, drains, lakes, ponds, staff quarters, residential halls and cattle sheds. A total of 1397 mosquito larvae were collected from the places. Ten species of mosquitoes under three genera were identified. The recorded genera were Anopheles (An.), Culex (Cx.) and Aedes (Ae.). The collected species were An. bengalensis, An. vagus, Cx. fuscocephala, Cx. quinquefasciatus, Cx. tritaeniorhynchus, Cx. gelidus, Cx. vishnui, Cx. whitmorei, Cx. sitiens and Ae. albopictus. Among the collected larvae, Culex was found most prevalent (64.3%), followed by Anopheles (26.7%) and Aedes were the least prevalent (9.0%). The results of this study provide evidence that drains were the most common aquatic habitat of Anopheles and Culex larvae in Boyra, Kewatkhali and Balashpur. In BAU campus, agronomy fields were found having the highest percentage (35.2%) of mosquito larvae than the other places of the campus. This study suggests that although drains and rice fields are the richest habitats, since Anopheles and Culex can breed in all available breeding habitats. This larval survey will help us to conduct future mosquito control activities and provide us useful information to schedule larvicide’s application to control the mosquito borne diseases in the study areas as well as throughout the country.DOI: http://dx.doi.org/10.3329/bjvm.v13i1.23962Bangl. J. Vet. Med. (2015). 13 (1): 79-88

scholarly journals Delivery Methods for RNAi in Mosquito Larvae

2020 ◽  
Vol 20 (4) ◽  
Author(s):  
Kashif Munawar ◽  
Azzam M Alahmed ◽  
Sayed M S Khalil
Keyword(s):  
Mosquito Control ◽  
Mosquito Species ◽  
Main Tool ◽  
Field Application ◽  
World Population ◽  
Mosquito Larvae ◽  
Health Issues ◽  
Delivery Methods ◽  
Resistance Development ◽  
The World

Abstract Mosquito-transmitted diseases pose a threat for a great portion of the world population. Chemical insecticides are the main tool for mosquito control. Heavy dependence on chemicals created several problems such as resistance development in many mosquito species, environmental effects, and human health issues. Other tools for mosquito control were developed and used in some parts of the world. Ribonucleic acid interference (RNAi) is a reverse genetic mechanism that was recently introduced as a new tool for pest control. Regarding mosquito, RNAi was used to study gene function and to discover genes that can be used as targets for control purposes. Several delivery methods are used to induce RNAi in mosquito larvae. Some methods such as injection and soaking are used routinely in RNAi research but have no application in the field. Other methods such as nanoparticles and microbes have some characteristics that make them good candidates for field application. In this report, we will focus on delivery methods for RNAi in mosquito larvae and will give examples for each method.

Rearing of eight species of terrestrial gastropods (order Stylommatophora) under laboratory conditions

1985 ◽  
Vol 63 (10) ◽  
pp. 2474-2476 ◽  
Author(s):  
J. B. Gray ◽  
R. A. Kralka ◽  
W. M. Samuel
Keyword(s):  
Leaf Litter ◽  
Natural Environments ◽  
Deroceras Reticulatum ◽  
Terrestrial Gastropods ◽  
Laboratory Conditions

The snail Triodopsis multilineata (Say) and the slugs Deroceras laeve (Müller) and Deroceras reticulatum (Müller) were successfully reared using inorganic vermiculite as a substrate and carrots and lettuce as food. Discus cronkhitei (Newcomb), Vallonia gracilicosta Reinhardt, Vallonia pulchella (Müller), Vertigo gouldii (Binney), and Zonitoides arboreus (Say) were reared on various types of organic leaf-litter substrates that simulated their natural environments. Triodopsis multilineata was the gastropod most easily reared and maintained.

The Graphical Representation of Instar Records in a Regional Mosquito Survey

1929 ◽  
Vol 20 (2) ◽  
pp. 195-198
Author(s):  
J. F. Marshall ◽  
J. Staley
Keyword(s):  
Graphical Representation ◽  
Mosquito Control ◽  
Research Work ◽  
Mosquito Larvae ◽  
Routine Examination

Since the opening of the British Mosquito Control Institute, in August 1925, the mosquito control of Hayling Island (initiated in August 1920) has been carried on as part of the research work of the Institute's laboratory.This work involves the routine examination of the different water-places of the Island throughout the year by an inspector who brings to the laboratory all specimens of mosquito larvae, etc., thus collected. These specimens are identified, recorded in the daily register and finally utilized in various ways ; the larvae remaining in the water-places being subsequently destroyed by appropriate means. The inspector's working year is therefore made up of “ collecting days ” and “ anti-larval days ” ; the time devoted to these two departments of the work being approximately the same.

Sign in / Sign up

Export Citation Format

Share Document