Abstract. Culex quinquefasciatus Say, 1823 is an insect that served as a vector for urban lymphatic filariasis. The abundance of this mosquito could serve as an early indicator for filariasis transmission in endemic area. On the other hand, its active period could be key point for this disease elimination. The information of its activities and periodicity in Indonesia was still inadequate. This study was conducted to determine the periodicity of Cx. quinquefasciatus and its potency for the filariasis transmission in Pasirsari village and Simbangkulon village, Pekalongan, Central Java, Indonesia. Two villages were selected, since both had been known to have high occurrences for lymphatic filariasis. Human landing-biting method and hand net were used in mosquitoes collections. The sample collections were done both indoor and outdoor, from 6 pm to 6 am, with 1 h interval. In addition, the possible habitat and breeding places of this mosquito were also observed. The total of female mosquitoes that have been collected was 328. The abundance of Cx. quinquefasciatus was different between two villages. The peak activity was at 00.00 to 01.00 am for both indoor and outdoor collections. Drainages with stagnant polluted water near housing area were positively contained abundant of mosquitoes larvae. This result might indicate that there was a high possibility of filariasis transmission in this area.
Abstract. Windyaraini DH, Marsifah T, Mustangin Y, Poerwanto SH. 2019. Detection of transovarial transmission of dengue virus in Aedes spp. (Diptera: Culicidae) from Brontokusuman Village, Yogyakarta, Indonesia. Biodiversitas 20: 2061-2067. Dengue Hemorrhagic Fever (DHF) is an infectious vector-borne disease. It is caused by dengue virus infection through the vector of Aedes spp. Dengue virus can be transmitted transovarially from infected female mosquitoes to their eggs. The presence of transovarial transmission allows maintenance of serotypes of dengue virus in nature. Detection of transovarial transmissions can be used to predict disease outbreaks as an effort to control the dengue virus. Dengue control is generally carried out through control of dengue vectors (mosquitoes) with environmental management, the use of chemical agents (insecticides) and biological control. This study was conducted to determine the existence of transovarial (vertical) transmission, factors affecting it and the resistance status of Aedes spp. against cypermethrin insecticide (pyrethroid) in Brontokusuman Village, Mergangsan Sub-district of Yogyakarta, Indonesia. The study was conducted from September 2018 to February 2019 with larvae sampling in 100 houses. The adult Aedes spp. mosquitoes were used as the sample of immunohistochemical methods and bioassay to get the mosquito resistance status against cypermethrin. The transovarial transmission of dengue virus in Aedes spp. from Brontokusuman Village was found in 3 of 100 samples of Aedes spp. mosquitoes, and the TTI value (Transovarial Transmission Index) was 3%. The transovarial transmission is influenced by the density of the infected vectors, the condition of their eggs and the number of dengue cases. The bioassay test results showed that the resistance status of Aedes spp. can be presumed resistance against cypermethrin insecticide.
Ectoparasites in bats can cause a decrease in health and can be a disease vector. Ectoparasites found in bats are generally members of the Insect Class and Arachnida Class. This study was aim to determine the diversity of ectoparasites in bats of the Microchiroptera suborder in Jepang Cave, Plawangan Hill, Sleman, Yogyakarta and knowing various factors that influence the existence of these ectoparasites in bats. Catching bats is done by mist net, bats are anesthetized and morphometric measurements are carried out. Descriptive methods are used to identify bats and their ectoparasites and analyze the abundance of ectoparasites using prevalence and intensity. Identification of ectoparasites were carried out in the Animal Systematic Laboratory of the Parasitology Section of the Faculty of Biology, Universitas Gadjah Mada, by using the book of ectoparasites identification. Bat species were ound include Miniopterus schreibersii and Rhinolopus pusillus. The results showed that ectoparasite species were found in the bats of the Microchiroptera Suborder from the Subclass Acarina and the Insect Class. The species of Subclass Acarina found were Periglischrus sp., Spinturnix plecotinus, Blattisocius sp., And Glycyphagus sp. Species of the Insect Class found include Megastrebla sp., Stylidia caudata, Basilia sp., and Brachytarsina sp. The prevalence of R. pussilus in Jepang Cave, was 66.67% and it is frequent. The ectoparasite intensity category of Periglischrus sp. was 0.72, meanwhile Glycyphagus sp. and Stylidia caudata were 0.06, which is very low.
The life cycle of Digenea subclass trematodes that mostly involves snails as intermediate host in the larval stage in the form of sporocysts, redia and cercariae. This study aims to determine the species of freshwater snails, populations and stages of trematoda larvae that infect freshwater snails in the paddy fields and also the factors that influence the population of trematoda larvae. This research method uses purposive random sampling. Snails were collected from paddy fields in Sleman Regency, Yogyakarta City and Bantul Regency, Special Region of Yogyakarta. Snails and Trematodes larvae were identified based on morphological characters with a microscope. The results showed that the species of freshwater snail as an inang antara of Trematode was Lymnaea sp. (96.9%), Pomacea canaliculata (2.6%), and Brotia sp. (0.5%). The total population of trematoda larvae in freshwater snails was 4329 individuals with the largest population in Sleman Regency (2784 individuals). Trematode larval stages found were sporocysts (4.8%), redia (8.3%), Leptocercous type cercariae (35.2%), and Furcocercous type cercariae (51.7%). The most trematode larvae found in fresh water snail was Furcocercous type cercariae. Factor affecting trematode larvae population are the species and abundance of freshwater snail.
Penelitian ini dilakukan untuk mengetahui keanekaragaman Acarina dan faktor lingkungan yang mempengaruhi keberadaan Acarina di Pusat Inovasi Agro Teknologi (PIAT) Mangunan, Yogyakarta. Penelitian ini dilakukan di PIAT Mangunan untuk pengambilan sampel dan Laboratorium Sistematika Hewan bagian Parasitologi Fakultas Biologi UGM untuk preparasi dan identifikasi. Metode yang digunakan adalah ekstraksi sampel menggunakan corong Barlese Tullgren dengan beberapa modifikasi. Sampel diambil pada 3 area vegetasi (sirsak, srikaya, dan sawo) dan setiap area diambil lima titik sampling. Pengukuran lingkungan meliputi kelembaban udara dan suhu udara diukur dengan alat higrometer, pH, dan suhu tanah dengan soil tester digital, serta kelembaban tanah dengan soil tester Takemura DM-5. Acarina yang diperoleh dilihat di bawah mikroskop dan di-mounting dengan larutan hoyer’s. Identifikasi Acarina menggunakan buku identifikasi A Manual of Acarology. Data yang diperoleh dari penelitian dianalisis menggunakan indeks keanekaragaman Shannon-Wiener. Berdasarkan identifikasi Acarina yang telah dilakukan, didapatkan 20 Family dan 28 Genus dan 399 cacah individu. Tingkat keanekaragaman Acarina termasuk dalam kategori sedang. Faktor lingkungan yang mempengaruhi kehadiran Acarina adalah suhu dan kelembaban.THE DIVERSITY OF ACARINA IN AGRO TECHNOLOGY INNOVATION CENTER MANGUNANThis study was aimed at determining the diversity of Acarina and environmental factors that affect the existence Acarina at Agro Technology Innovation Center (ATIC) Mangunan, Yogyakarta. This study was conducting at ATIC Mangunan for sampling and the Animal Systematics Laboratory of the Parasitology, Faculty of Biology, Gajah Mada University for preparation and identification. The method used was sample extraction using Barlese Tullgren funnel with several modifications. Samples were taken at 3 vegetation areas (soursop, sarikaya a.k.a Annona squamosa, and sapodilla) and each area was taken five sampling points. The environmental measurements include air humidity and air temperature measured by means of a hygrometer, pH and soil temperature with digital soil tester, and soil moisture with a soil tester Takemura DM-5. Acarina obtained was seen under a microscope and mounted with Hoyer’s solution. The identification of Acarina using identification book A Manual of Acarology. The data obtained from the study were analyzed using the Shannon-Wiener diversity index. Based on Acarina’s identification, 20 families and 28 genera and 399 individual numbers were obtained. The level of diversity of Acarina is categorized as the medium category. The environmental factors that influence the presence of Acarina are temperature and humidity.
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