oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
LIFE CYCLE STUDY OF MALARIA VECTOR ANOPHELES ACONITUS DONITZ IN THE LABORATORY  [cached]
Barodji Barodji,Sularto T.,Bambang Haryanto,Widiarti Widiarti
Bulletin of Health Research , 2012,
Abstract: Anopheles aconitus Donitz, merupakan vector utama penyakit malaria di daerah-daerah sekitar persawahan di pulau Jawa, sejak tahun 1983 telah berhasil dikembangbiakkan di labo-ratorium. Siklus hidupnya dari telur sampai dewasa paling singkat selama 11 hari, sedang umum-nya antara 13 sampai 16 hari. Perkawinan terjadi sebelum nyamuk mengisap darah. Nyamuk mulai menghisap darah pada dua hari setelah muncul dari pupa dan bertelur dua sampai lima hari ke-mudian. Setelah bertelur nyamuk akan menghisap darah lagi. Dari munculnya nyamuk dewasa sampai bertelur yang pertama diperlukan waktu antara empat sampai tujuh hari, sedang peletakan telur berikutnya terjadi paling cepat dua hari dan paling lama lima hari setelah menghisap darah. Nyamuk generasi baru akan muncul setiap 15 hari sekali. Nyamuk jantan maupun betina dapat ber-tahan hidup sekitar 25 hari, sekitar 50% nyamuk jantan hidup lebih dari 13 hari dan nyamuk betina lebih dari 12 hari.
MORPHOLOGICAL CHARACTERISTICS OF ANOPHELES ACONITUS DONITZ FROM DIFFERENT GEOGRAPHICAL AREAS  [cached]
Damar Tr Boewono,Sustriayu Nalim
Bulletin of Health Research , 2012,
Abstract: Penelitian morfologi untuk melihat kemungkinan adanya sibling species vektor malaria Anopheles aconitus di daerah Kabupaten Cilacap, Banjarnegara, Semarang Karanganyar dan Jepara Jawa Tengah, telah dilakukan pada tahun 1982-1984. Pemeriksaan terhadap 1.418 spesimen ditemukan 4 tipe An.aconitus berdasarkan perbedaan morfologi sayap, yaitu tipe A (90%) kosta ada 4 daerah pucat (sektor, subkostal, preapikal, dan apikal). Tipe B (4.6%) kosta ada 5 daerah pucat (presektor, sektor, subapical, dan apikal). Tipe C (2.1%) kosta ada 3 daerah pucat (subkostal, preapikal dan apikal). Tipe D (2.4%) kosta ada 3 daerah pucat (sektor, preapikal dan apikal). Pemeriksaan spesimen dari pemeliharaan progeni menunjukkan bahwa 4 tipe sayap yang ditemukan ternyata hanya merupakan variasi morfologi dari pada spesies An.aconitus.
EVALUATION OF PIT SHELTERS AS A MONITORING DEVICE FOR OUTDOOR RESTING POPULATIONS OF MALARIA VECTOR ANOPHELES ACONITUS DONITZ  [cached]
Barodji Barodji,Supratman S.
Bulletin of Health Research , 2012,
Abstract: Penelitian kepadatan populasi vektor malaria Anopheles aconitus Donitz yang hinggap di luar rumah pada siang hari dengan menggunakan lubang buatan telah dilakukan di Jawa Tengah. Dalam waktu yang bersamaan dilakukan pula penangkapan nyamuk yang hinggap di habitat aslinya (pada tebing sungai, di bawah batu-batuan sepanjang sungai dan pada vegetasi di sepanjang saluran pengairan) untuk perbandingan. Hasil penelitian selama lebih dari dua tahun menunjukkan bahwa rata-rata padat populasi A n. aconitus tiap bulan di lubang buatan (65,60 tiap orang per jam) hampir sama dengan yang di habitat aslinya (60,70 tiap orang per jam). Tetapi fluktuasi padat populasi tiap minggu yang dirata-ratakan tiap bulan tidak ada korelasi yang nyata di antara dua cara penilaian tersebut. Pada musim kemarau padat populasi An. aconitus di lubang buatan adalah tinggi (81,45 tiap orang per jam) dan pada musim hujan adalah rendah (49,70 tiap orang per jam), sedang di habitat aslinya menunjukkan keadaan yang berkebalikan (45,70 tiap orang per jam pada musim kemarau dan 75,70 pada musim hujan). Hal tersebut menunjukkan bahwa penangkapan nyamuk di lubang buatan tidak dapat digunakan untuk mengganti penangkapan nyamuk di habitat aslinya, karena hasilnya berlawanan.
Morphological method for sexing anopheline larvae  [PDF]
S.N. Emami, H. Vatandoost, M.A. Oshaghi , F. Mohtarami, E. Javadian & A. Raeisi
Journal of Vector Borne Diseases , 2007,
Abstract: Background & objectives: Most of autocidal control of malaria vectors relies on the rearing andrelease of large numbers of sterile male into a wild population and it would be crucial to separate themales from females before release. This could result in enormous economic benefits in the massrearing and raise the efficiency of the field operations. The development of genetic sexing ofmosquitoes, enabling the release of males only, but impairing the overall fitness of the releasedinsect has been considered greatly. Here we report on a morphological sexing method for thepreferential diagnosis and separation of males in late III and IV instar larvae for the mosquitoesAnopheles stephensi Liston and An. culicifacies s.l. (Diptera: Culicidae), the principal vectors ofhuman malaria in Asia and Indian subcontinent.Methods: Male mosquitoes are identified by their tube like organ at the 9th abdomen segment whichoriginates from segment parallel to the spiracles. Length and width of this organ is measured as66.66 ± 9.5 and 14.3 ± 1.5 μm respectively. The whole length of the organ is 201.63 ± 23.4 μm. Twofried eggs in the anterior portion of the segment are apparent in males. The length of tube in femaleis shorter than the male (almost half of the length–37.95 ± 4.0 μm), its width is slightly stout andwider than the male (16.72 ± 1.4 μm). Two fried eggs in the anterior portion of the segment areabsent. After separation of live male larvae by those characteristics, they were transferred into thetrays and emerged adults were identified to ascertain correct identification of sex.Results: All the larvae with male organs developed into male adults with hairy antennae and clubshaped palpi, whereas all the female larvae developed into adult females.Interpretation & conclusion: The sex separation at the larval stage will provide a clue for embryonicorigin of sex organs, insecticide selection at the larval stage, sex related genes, male sterility andother measures.
EFEKTIVITAS INSEKTISIDA ORGANOCHLORIN OMS-1558 DALAM PENGENDALIAN VEKTOR MALARIA ANOPHELES ACONITUS DONITZ YANG SUDAH KEBAL TERHADAP DDT  [cached]
Barodji Barodji,R. F. Shaw,G. D. Pradhan,Sularto Sularto
Bulletin of Health Research , 2012,
Abstract: A village-scale trial of organochlorin compound OMS-1558 as an 70% water-dispersible powder (wdp) and applied as an indoor residual spray at 2 gr/m2, was carried out against the DDT—resistant malaria vector Anopheles aconitus near Semarang, Central Java. Result of this trial, as evaluated by human-vector contact rates, resting densities and parous rate showed effectiveness against the vector populations for only about one week or less. In contact bioassay tests mortalities of 50% or greater for one week, while mortalities from air-borne bioassay tests were negligible. It was concluded that DDT—resistant malaria vector can not be controlled by this insecticide. The result of susceptibility tests showed there is cross resistance between DDT and new organochlorin OMS-1558.
CONTROL DEMONSTRATION OF THE RICEFIELD BREEDING MOSQUITO ANOPHELES ACONITUS DONITZ IN CENTRAL JAVA, USING POECILIA RETICULATA THROUGH COMMUNITY PARTICIPATION : 3. FIELD TRIAL AND EVALUATION  [cached]
Sustriayu Nalim,Damar Tri Boewono,Arief Haliman,Elias Winoto
Bulletin of Health Research , 2012,
Abstract: Suatu penelitian dilakukan untuk menjajagi kemungkinan menggunakan minapadi sebagai cara pemberantasan nyamuk Anopheles aconitus. Minapadi dilakukan dengan ikan Cyprinus carpio. Dengan tersedianya air di sawah untuk ikan, ikan pemakan jentik Poecilia Reticulata yang ditebarkan dapat hidup pula. Penebaran dilakukan oleh masyarakat. Hasil Penelitian ini menunjukkan bahwa melalui minapadi yaitu dengan penebaran, ikan P. reticulata pada kepadatan 2 ekor /m2, populasi An. aconitus selama 5 tahun dapat diturunkan sebanyak 99,7% dan S.P.R. malaria sebanyak 98.8%. [1] Regency Health Service, Banjarnegara Regency, Central Java.
CONTROL DEMONSTRATION OF THE RICEFIELD BREEDING MOSQUITO ANOPHELES ACONITUS DONITZ IN CENTRAL JAVA, USING; POECILIA RETICULATA THROUGH COMMUNITY PARTICIPATION : 1. EXPERIMENTAL DESIGN AND CONCEPT  [cached]
Sustriayu Nalim,Damar Tri Boewono,Arief Haliman,Elias Winoto
Bulletin of Health Research , 2012,
Abstract: Penelitian dilakukan untuk menjajagi cara memberantas vektor malaria Anopheles aconitus di sawah dengan ikan pemakan jentik Poecilia reticulata. Dalam penelitian ini terlihat bahwa dalam pelaksanaan program pemberantasan ini, partisipasi petani untuk mina padi dapat digalakkan melalui rapat kelompok tani. Program mina padi menye-diakan tempat hidup bagi ikan pemakan jentik. Rencana pelaksanaan program ini serta cara penggalakan petani dibicarakan dalam makalah ini.
Physical, Chemical and Biological Characteristics in Habitats of High and Low Presence of Anopheline Larvae in Western Kenya Highlands  [PDF]
Bryson A. Ndenga, Jemimah A. Simbauni, Jenard P. Mbugi, Andrew K. Githeko
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0047975
Abstract: Background Characteristics of aquatic habitats determine whether mosquitoes will oviposit, hatch, develop, pupate and successfully emerge into adults or not, thus influencing which mosquito species will occupy a habitat. This study determined whether physiochemical and biological characteristics differ between habitats with high and low presence of anopheline larvae. Methods Physical, chemical and biological characteristics were evaluated in selected habitats twice per month within three highland valleys in western Kenya. Aquatic macro-organisms were sampled using a sweep-net. Colorimetric methods were used to determine levels of iron, phosphate, nitrate, ammonium and nitrite in water samples. Generalized Estimating Equations (GEE) was used to compare parameters between the two categories of anopheline presence. Results Habitats with high anopheline presence had greater abundance of mosquito aquatic stages and tadpoles and two times more levels of nitrate in water, whereas habitats with low anopheline presence had wider biofilm cover and higher levels of iron in water. Conclusion Habitats of high and low presence of anopheline larvae, which differed in a number of physical, chemical and biological characteristics, were identified in valleys within western Kenya highlands. Differences in habitat characteristics are critical in determining the number of anopheline larvae that will fully develop and emerge into adults.
Spatial and temporal distribution of anopheline larvae in two malarious areas in Sucre State, Venezuela
Berti, Jesus;Zimmerman, Robert;Amarista, Jesus;
Memórias do Instituto Oswaldo Cruz , 1993, DOI: 10.1590/S0074-02761993000300003
Abstract: the spatial and temporal distribution of anopheline larvae was studied in two coastal malarious areas of sucre, state, venezuela. seven habitat types were sampled in the village of guayana and eight species of anopheles were collected. anopheles aquasalis was the predominant species collected and was most abundant in the brackish marsh habitat (71 larvae per 100 samples). it was most abundant during the rainy season. at the second location, santa f e, six habitat types were sampled and four anopheline species were collected. habitats where an. aquasalis was most abundant were temporary freshwater ponds (34 larvae per 100 samples) and mangroves (10.5 larvae per 100 samples). at this location it was also most abundant in the rainy season. during the dry season it was collected in small numbers in river pools (1.3 larvae per 100 samples) along with large numbers of an. pseudopunctipennis (479 larvae per 100 samples). larval control could be an important component of the malaria control program because major habitats could be defined and presence and abundance of larvae was limited to specific times of year.
CONTROL DEMONSTRATION OF THE RICEFIELD BREEDING MOSQUITO ANOPHELES ACONITUS DONITZ IN CENTRAL JAVA, USING POECILIA RETICULATA THROUGH COMMUNITY PARTICIPATION: 2. CULTURING, DISTRIBUTION AND USE OF FISH IN THE FIELD  [cached]
Sustriayu Nalim,Damar Tribuwono
Bulletin of Health Research , 2012,
Abstract: Suatu percobaan pemberantasan vektor malaria Anopheles aconitus dengan penyebaran ikan pema-kan jentik Poecilia reticulata di sawah telah dilakukan. Untuk memacu peran serta petani, penyebaran ikan P. reticulata dilakukan bersamaan dengan minapadi di mana ikan Cyprinus carpio dipelihara di sawah. Beberapa aspek yang diteliti dalam percobaan ini adalah (1) biologi jentik An. aconitus dan ikan dan (2) cara-cara berkembangbiaknya ikan. Penelitian ini menunjukkan bahwa penyebaran An. aconitus di sawah pada umumnya 1/2 — 1 meter dari tepi pematang sawah, daya makan ikan P. reticulata rata rata adalah 119,4 jentik/hari, daya reproduksi rata-rata ikan P. reticulata adalah 109,3 ikan/bulan, daya produksi ikan C. carpio berkisar antara 5000 — 10.000 telur/3 bulan tergantung pada umur ikan betina. Kepadatan ikan P. reticulata 2 ikan/m2 dapat menanggulangi populasi jentik di sawah.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.