Judul: Kemampuan Reproduksi Nyamuk Aedes aegypti Berdasarkan Keberadaan Nyamuk Jantan
Abstrak: The research was conducted to determine the reproductive capability of Aedes aegypti related to the presence of male mosquitoes, that include the number of eggs, eggs groups, egg hatchability and fertility between female Aedes aegypti that lived together with the male mosquitoes during her life and female mosquitoes that lived together with the male mosquitoes until it’s first gonotrophic cycle. Mosquitoes were obtained from the Parasitology and Medical Entomology Insectarium FKH IPB. This research consisted of two treatment groups. Every treatment was repeated three times and each repetition consist of 20 females and 10 males Aedes aegypti mosquitoes. The first treatment group consist of females that lived together with males during her life. The second treatment group consist of female mosquitoes that lived together with the male mosquitoes in the same cage until it’s first gonotrophic cycle. The number of eggs and eggs groups on both treatment did not show a significant difference. Egg hatchability also did not show a significant difference on both treatments. The female mosquitoes that lived together with the male mosquitoes just until the first gonotrophic cycle was capable to produce eggs in every gonotrophic cycle due to having a spermathecae.
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Judul: Reproductive Capacity of Aedes aegypti In Laboratory
Abstrak: Penelitian ini dilakukan untuk mengetahui tentang perilaku kawin, kapasitas reproduksi Aedes aegypti meliputi jumlah kelompok telur, jumlah telur, daya tetas telur, produksi telur fertil yang dihasilkan oleh nyamuk betina Aedes aegypti tanpa jantan, dan jangka hidup nyamuk Aedes aegypti. Nyamuk Aedes aegypti diperoleh dari Insektarium Bagian Parasitologi dan Entomologi FKH IPB. Penelitian ini terdiri dari tiga perlakuan. Perlakuan pertama dimasukkan satu ekor jantan dan satu ekor betina ke dalam kandang pertama, perlakuan kedua dimasukkan satu ekor jantan dan dua ekor betina ke dalam kandang kedua, dan perlakuan ketiga dimasukkan satu ekor jantan dan tiga ekor betina ke dalam kandang ketiga. Setiap perlakuan diulang sebanyak lima kali ulangan. Hasil yang diperoleh, untuk perilaku kawin nyamuk Aedes aegypti di dalam kandang yang kerap ditemui adalah posisi ventral to ventral. Pada kapasitas reproduksi terlihat jumlah kelompok telur yang dihasilkan pada setiap perlakuan tidak menunjukkan perbedaan yang nyata. Jumlah telur yang dihasilkan oleh setiap ekor betina tidak menunjukkan perbedaan yang nyata begitu pula dengan daya tetas telur yang tidak menunjukkan perbedaan yang nyata pada setiap perlakuan. Kapasitas reproduksi terkait dengan telur fertil yang dihasilkan menunjukkan nyamuk Aedes aegypti betina dapat menghasilkan telur yang fertil walaupun nyamuk jantan telah mati. Pada jangka hidup nyamuk betina tidak menunjukkan perbedaan yang nyata.
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Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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