scholarly journals The Influence of Vegetation and House Index on Male Mosquitoes DHF Vector Abundance on Kawengen Sub-District

2020 ◽  
Vol 9 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Dyah Mahendrasari Sukendra ◽  
Yunita Dyah Puspita Santik ◽  
Bambang Wahyono Wahyono ◽  
Nur Siyam ◽  
Fitri Indrawati
Keyword(s):  
Adult Male ◽  
Sampling Technique ◽  
Fruit Trees ◽  
Population Surveillance ◽  
Vegetation Density ◽  
Light Traps ◽  
Moderate Density ◽  
Vector Population ◽  
Male Mosquito ◽  
Male Mosquitoes

The environmental conditions of an area can be a major risk factor for potential outbreaks of DHF. Dense areas with a variety of vegetation are facilitated as breeding sites and have an impact on vector density. The high of vector population give an effect the speed of transmission vector-borne diseases. DHF vector population is related to the vector DHF mating pattern. Adult male mosquitoes vector DHF plays an important role in the pattern of mating DHF. The proportion of mating between adult male and females mosquitoes is 1: 1. Thus it can be seen the density of male mosquitoes, it can be easily estimated the number of female mosquitoes which fertilize and lay eggs. Conducted using observational analytics with male mosquito population surveillance approach. This research aimed to effect of vegetation and House Index (HI) on the abundance of male mosquito populations. Adult mosquitoes taken using light traps with a total sampling technique. Using spatial vegetation analysis shows that Kawengen residents, has a variety of monoecious groups and rice fields. Variety of fruit trees (banana,mango,guava,soursop), flower plants (frangipani,hibiscus), bamboo, another plant (i.e teak). Vegetation density is in the low-moderate category. Kawengen included in the category of moderate density (HI=36%). The number of Aedes sp. male mosquitoes trapped by light traps, of the total trapped mosquito was 6.52%. Variety and density of plants give a support the abundance of male mosquitoes. As a resting and feeding place. HI in moderate density category, indicates there is a positive container or a place for laying eggs. The larvae density affects the sex ratio of mosquitoes.

A new species of Lobesia Guenée, 1845 from Thailand (Lepidoptera: Tortricidae: Oletheutinae)

Zootaxa ◽  
2018 ◽  
Vol 4434 (2) ◽  
pp. 381
Author(s):  
THIPMANEE CHAROENSUB ◽  
NANTASAK PINKAEW ◽  
SUNISA SANGUANSUB
Keyword(s):  
New Species ◽  
Adult Male ◽  
Male Genitalia ◽  
Light Traps ◽  
Secondary Characters ◽  
A New Species ◽  
Insect Collection

Lobesia bisacca Charoensub and Pinkaew, n.sp., is described from Thailand. Specimens were collected in light traps in Trat Province, eastern Thailand and were deposited in the Kasetsart Kamphaengsaen Insect Collection. The new species can be distinguished from all other congeners by the unusual, long, protruding process from the base of the sacculus in the male genitalia. Illustrations of the adult, male genitalia, and male secondary characters are provided. 

scholarly journals Strong attraction of male mosquitoes (Aedes aegypti) to humans

2021 ◽  
Author(s):  
Brogan A Amos ◽  
Ary A Hoffmann ◽  
Kyran M Staunton ◽  
Meng-Jia Lau ◽  
Thomas R Burkot ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Field Experiments ◽  
Human Subjects ◽  
Strong Attraction ◽  
Host Seeking ◽  
Specific Trait ◽  
Female Specific ◽  
Swarming Behavior ◽  
Male Mosquito ◽  
Male Mosquitoes

Female Aedes aegypti mosquitoes integrate multiple sensory cues to locate human hosts for blood meals. While male mosquitoes do not blood feed, male Ae. aegypti swarm around and land on humans in nature. Basrur et al. (2020) generated male Aedes aegypti lacking the fruitless gene and discovered that they gained strong attraction to humans, similar to female mosquitoes. The authors assume that host-seeking is a female-specific trait, which they confirmed through experiments. However, all experiments were performed under confined laboratory conditions which appear to inhibit swarming behavior. We used semi-field experiments to demonstrate robust attraction of male Ae. aegypti to humans. Human-baited traps captured up to 25% of released males within 15 min, whereas control traps without humans as bait failed to capture males. Rapid attraction to humans was further demonstrated through videography. Males swarmed around and landed on human subjects, with no activity recorded in paired unbaited controls. The absence of female Ae. aegypti in these experiments rules out a hypothesis by Basrur et al. (2020) that males are attracted not to the human, but to host-seeking females near humans. Finally, we confirm the lack of male attraction to humans in small laboratory cages, even when using recently field-collected males. Our direct observations of male mosquito attraction to humans refute a key assumption of Basrur et al. (2020) and raise questions around conditions under which fruitless prevents male host-seeking. Male mosquito attraction to humans is likely to be important for mating success in wild populations and its basis should be further explored.

Morphology and ultrastructure of Tetranychus turkestani Ugarov & Nikolskii (Acari: Tetranychidae)

2017 ◽  
Vol 22 (8) ◽  
pp. 1181
Author(s):  
Jueyingqi Jiang ◽  
Yannan Zhang ◽  
Dandan Guo ◽  
Jianping Zhang ◽  
Jing Chen
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Adult Female ◽  
Adult Male ◽  
Fruit Trees ◽  
Great Change ◽  
Life Stages ◽  
Stout Spine ◽  
Tetranychus Turkestani ◽  
Scanning Electron

Tetranychus turkestani is a serious pest of cotton, corn, vegetables, fruit trees and forests in Xinjiang. All life stages of T. turkestani were observed using both light and scanning electron microscope. The egg is smooth and spherical. The eupathidial spinnerets of larva and protonymph are different from that of the deutonymph and adult in shape. The spinneret of adult female is obviously thicker and larger than that in male. The palpfemoral seta of adult male is a short, stout, spine-like process. T. turkestani has fourteen pairs of dorsal setae. The number of ventral setae increases regularly in number in each molt. The leg chaetotaxy has a great change from larva to deutonymph.

The Chironomus group (Diptera: Chironomidae) in Lake Winnipeg, Canada

Zootaxa ◽  
2012 ◽  
Vol 3275 (1) ◽  
pp. 1
Author(s):  
OLE A. SÆTHER
Keyword(s):  
Adult Male ◽  
Trophic Levels ◽  
Bottom Fauna ◽  
Light Traps ◽  
Lake Winnipeg ◽  
Larval Instars

Species of the Chironomus group from Lake Winnipeg, Manitoba, Canada are listed and taxonomic and ecological notesgiven. Chironomus (C.) entis Shobanov and C. (C.) bifurcatus dominates the bottom fauna with minor occurrence of fourother larval types. Fourteen species of Chironomus Meigen, one Chaetolabis Townes, and one Lobochironomus Ryser,Wülker et Scholl; one species of Benthalia Lipina, and one Einfeldia Kieffer are present in the light traps. Chironomus(Lobochironomus) sp. and Benthalia brunneipennis (Johannsen) are described on adult male. A key to the Nearctic malesof Einfeldia, Benthalia and Chironomus subgen. Lobochironomus is presented. The significance of the different Chi-ronomus species as indicators of trophic levels is demonstrated by their distribution in Lake Winnipeg. The separation of larval instars is shown approximately to follow Dyar’s rule.

scholarly journals The level of damage and estimation of rehabilitation value in the Lantebung Mangrove Ecotourism, Makassar City

2021 ◽  
Vol 886 (1) ◽  
pp. 012106
Author(s):  
Hasanuddin ◽  
Irma Sribianti ◽  
M Daud ◽  
Saharuddin
Keyword(s):  
Natural Resources ◽  
Sampling Technique ◽  
Director General ◽  
Mangrove Forests ◽  
Vegetation Density ◽  
Mangrove Species ◽  
Survey Technique ◽  
Conservation Of Natural Resources ◽  
Avicennia Alba ◽  
Forest Rehabilitation

Abstract This study aims to determine the level of damage and estimation of rehabilitation value in the Lantebung Mangrove Ecotourism, Makassar City. The sampling technique was carried out using a survey technique with a purposive sampling method. The size of the plots made is 20 m x 50 m with a total of 8 plots. The level of mangrove damage is determined based on land cover and vegetation density. Estimating the value of ecotourism rehabilitation is based on the Regulation of the Director-General of Natural Resources and Ecosystem Conservation P.8/KSDAE/SET/REN.2/10/2017 concerning Standards for Activities and Costs for Conservation of Natural Resources and Ecosystems. The results showed that there were two types of mangrove species, namely Rhizophora mucronate and Avicennia alba. Lantebung Mangrove Ecotourism has a vegetation cover of 82% with a vegetation density of 1,760 individuals/ha, so that the level of damage to mangroves is in a good category. In general, damage to Lantebung Mangrove Ecotourism is caused by converting mangrove forests into fishponds and settlements. The total cost of mangrove forest rehabilitation is IDR. 350,220,000

Composição, uso e conservação de espécies arbóreas em quintais de agricultores familiares na região da mata seca norte-mineira, Brasil

2012 ◽  
Vol 11 (2) ◽  
pp. 287 ◽  
Author(s):  
Reinaldo Duque-Brasil ◽  
Gustavo Taboada Soldati ◽  
Mário Marcos Espírito-Santo ◽  
Maíra Q. Rezende ◽  
Santos D’Ângelo-Neto ◽  
...  
Keyword(s):  
Rural Communities ◽  
Tree Species ◽  
Ornamental Plants ◽  
Sampling Technique ◽  
Fruit Trees ◽  
Agroforestry Systems ◽  
Small Scale ◽  
Plant Resources ◽  
Balanced Diet ◽  
Small Scale Farmers

Homegardens contain agroforestry systems that provide diverse resources for familyconsumption in rural communities. The aim of this study was to perform an ethnobotanical inventory of the tree speciesand their uses in the homegardens of two small-scale rural farming communities situated near the Mata Seca State Park,Minas Gerais, Brazil, and to understand the potential role of these agroecosystems in the conservation of native treespecies. Local knowledge about species used was assessed using free lists with 20 small-scale farmers selected using thesnowball sampling technique in each community. All shrub and tree species with a circumference at the soil level  10 cmwere sampled in each homegarden. We confirmed that most plant species listed provided food (48.3%) and shade (35.6%),showing the importance of fruit trees and evergreens in the homegarden flora in this local semi-arid context. Other specieswere also cited as medicinal and ornamental plants. Besides that, some species listed were used for construction, fuel,fodder, fertilizer and other uses. Amongst the 87 tree species, 44 are Brazilian natives, and 23 can be found in the dryforests of the region. These results showed that homegardens can contribute to conservation and enhancement of localbiodiversity functioning as a reservoir of species with different biogeographic origins, including regionally endemic andnative trees. Furthermore we conclude that homegardens are important sources of plant resources for home consumptionand contribute towards a balanced diet and to the welfare of the people living in the communities of north Minas Gerais’semi-arid region.

scholarly journals Keanekaragaman Jenis Serangga di Berbagai Lahan Pertanian Kelurahan Maubeli Kabupaten Timor Tengah Utara

2021 ◽  
Vol 13 (1) ◽  
pp. 11
Author(s):  
Maria Marmi Aveludoni
Keyword(s):  
Diversity Index ◽  
Environmental Parameters ◽  
Sampling Technique ◽  
Pitfall Traps ◽  
Light Traps ◽  
Agricultural Lands ◽  
North Central ◽  
Air Temperatures ◽  
Wiener Diversity Index

The presence of insects in an ecosystem varies widely, the diversity of insects in various agricultural lands can act as polydonature insects, pests, parasites, and predators for other insects. Referring to the role of insects, this study aims to determine what insects are present in various agricultural lands, to analyze insect diversity and to analyze environmental factors that influence the presence of insects. This research was conducted in Maubeli Village, North Central Timor Regency in July-August 2020. The sampling technique was carried out with pitfall traps, light traps and sweep nets, the data obtained were analyzed using the Shannon-Wiener diversity index. The research that has been carried out has found insects at the research location consisting of the families of Acrididae, Coccinelidae, Libellulidae, Mantidae, Nymphalidae, Papiolinidae, Pieridae, and Tettigonidae. The highest diversity of 11 families was found with the highest value H` = 1.34 and the lowest H` = 0.26. The results of measurement of environmental parameters at the research location show that morning, evening and night air temperatures range from 260C-280C, 270C-310C, 250C-360C, and humidity ranges from 60% -70%, soil pH ranges from 6 and soil moisture ranges from 2%.

scholarly journals Modeling the Control of Zika Virus Vector Population Using the Sterile Insect Technology

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
William Atokolo ◽  
Godwin Mbah Christopher Ezike
Keyword(s):  
Equilibrium Point ◽  
Equilibrium Points ◽  
Mosquito Population ◽  
Sterile Male ◽  
Wild Female ◽  
Globally Asymptotically Stable ◽  
Offspring Number ◽  
Vector Population ◽  
Control Intervention ◽  
Male Mosquitoes

This work is aimed at formulating a mathematical model for the control of mosquito population using sterile insect technology (SIT). SIT is an environmental friendly method, which depends on the release of sterile male mosquitoes that compete with wild male mosquitoes and mate with wild female mosquitoes, which leads to the production of no offspring. The basic offspring number of the mosquitoes’ population was computed, after which we investigated the existence of two equilibrium points of the model. When the basic offspring number of the model M0, is less than or equal to 1, a mosquito extinction equilibrium point E2, which is often biologically unattainable, was shown to exits. On the other hand, if M0>1, we have the nonnegative equilibrium point E1 which is shown to be both locally and globally asymptotically stable whenever M0>1. Local sensitivity analysis was then performed to know the parameters that should be targeted by control intervention strategies and result shows that female mating probability to be with the sterile male mosquitoes ρS, mating rate of the sterile mosquito β2, and natural death rates of both aquatic and female mosquitoesμA+μF have greater impacts on the reduction and elimination of mosquitoes from a population. Simulation of the model shows that enough release of sterile male mosquitoes into the population of the wild mosquitoes controls the mosquito population and as such can reduce the spread of mosquito borne disease such as Zika.

scholarly journals Dyslipidemia Incidents Between General Obesity and Central Obesity of Employees with Obesity at Universitas Lampung

2018 ◽  
Vol 11 (1) ◽  
pp. 201-207
Author(s):  
Khairun Nisa Berawi ◽  
Sutopo Hadi ◽  
Nur Indrawati Lipoeto ◽  
Irza Wahid ◽  
Jamsari Jamsari
Keyword(s):  
Adult Male ◽  
Central Obesity ◽  
Sampling Technique ◽  
Bivariate Analysis ◽  
P Value ◽  
General Obesity ◽  
Cross Sectional ◽  
Male Adult ◽  
Significant Difference ◽  
Observation Method

This study aims to determine the differences in the incidence of dyslipidemia between general obesity and central obesity in adult male employees having obesity at the Universitas Lampung. This research used cross sectional observation method. The study was conducted from August to October 2016. The respondent populations involved in this study were 33 male adult employees for each obesity group. Samples were taken by consecutive sampling technique. The results revealed that the average age of the respondents were 42.9 years, where 23 respondents (34.8 %) of the respondents were suffered from dyslipidemia. The result of unpaired T test showed that there was a significant difference of dyslipidemia incidence between general obesity and central obesity in adult male employees with obesity at Universitas Lampung in 2016 with p value of 0.039. Bivariate analysis showed that central obesity has a role in increasing the incidence of dyslipidemia greater than general obesity.

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