Judul: Tungau Ektoparasit pada Ular Micropechis ikaheka, Leiophyton albertisi, dan Stegonotus sp. di Papua
Abstrak: Symbiosis is an interaction between two species or more. In snake, ectoparasite mites were found in the external parts of the body such as beyond the ventral scales of the snake. Previous exploration showed that the snakes M. ikaheka, L. albertisi and Stegonotus sp. in Papua was found as the host of ectoparasites mites. However, there is lack of species information of the mites. Thus, this research were aimed to study the ectoparasite mites of snakes M. ikaheka, L. albertisi and Stegonotus sp. in Papua. Wholemount polyvinillactophenol slide dan Scanning Electron Microscope (SEM) were prepared for mites identification. Results showed that the ectoparasites mites on M. ikaheka, L. albertisi and Stegonotus sp. were clasified in Subclass Acari, Order Parasitiformes, Family Paramegistidae, Genus Ophiomegistus, and Species Ophiomegistus luzonensis. Characteristics of mites O. luzonensis has nine pairs of setae on the jugular shield, two setae on metapodal shield. The metapodal shields were unfused and those shields were separated with the peritreme shield, endopodal shield verge with latigynial shield, latigynial and sternogynial shield was separated. Latigynial shield possessed more than twenty pairs of setae, however, on mesogynial–ventrianal shield had more than one hundred simple foliate setae. The mesogynial and ventrianal shield were fused and occurred three rows of foliate setae.
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Judul: Inventarisasi Tungau Ektoparasit Kadal Eutropis multifasciata di IPB Dramaga dan Gunung Salak Endah
Abstrak: Life of each organism is influenced by the life of other organisms, thus forming the interaction between the two. Parasitism is a symbiosis between organisms that live and rely on other organisms and are detrimental to the host, for example the ectoparasite that infest Eutropis multifasciata lizard (Family Scincidae). Ectoparasites are defines as organisms that live on the surface of the host, sucking blood, or find food in the hair, fur, skin, or skin secretions. This study was aimed to explore the ectoparasite mites on E. multifasciata lizard in Bogor Agricultural University (IPB) Dramaga and Salak Endah Mountain, West Java. Observations were carried out for the parts of lizard body that were infested by the mites. Whole mount polyvinillactophenol slide were prepared for mites identification. The results showed that most mite infestations on lizard E. multifasciata were found in the body surface i.e. at stomach, rear legs and the base of the rear legs region, for 43, 22, 19 mites, respectively. This study found five mites families infested E. multifasciata lizard i.e. Trombiculidae, Erythraeidae, Microgyniidae, Ixodorhynchidae, Paramegistidae. Several mites from the family Trombiculidae and Erythraeidae were also existed in larvae and nymphs phase. The dominant mites that infested on E. multifasciata were Trombiculidae which was mostly infested by the larval stage. Based on the previous study, the development process of Trombiculidae mites from egg up to imago was outside the host (in the grass and ground litter). This study result is a particularly important founding since Trombiculidae mites is possible to become the agent of Trombiculiasis disease which cause irritation, swelling and itching in the skin.
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Judul: Kinerja model pengering bangunan tembus cahaya dari plastik tahan UV untuk pengeringan buah kopi
Abstrak: Kopi merupakan komoditas ekspor yang memerlukan pengeringan sebelum dikonsumsi, sehingga kemampuannya dapat disimpan dalam waktu lama sangat menentukan mutu dan nilai ekonominya. Penyediaan sarana pengeringan yang memadai sangat dibutuhkan untuk mencapai tujuan tersebut. Sebuah model bangunan tembus cahaya untuk pengeringan kopi skala 1.5 ton sudah dirancang dan diuji coba. Bangunan tersebut berukuran 6 m x3 m, tinggi 2.46 m terbagi menjadi dua. yaitu atap 0.56 m dengan sudut kemiringan 32.4" dan dinding 1.9 m membentuk sudut kemiringan 85.6" terhadap lantai. Plastik tahan UV menutupi atap dan dindingnya. Penelitian ini bertujuan menguji kinerja model pengering bangunan tembus cahaya pada kapasitas maksimum. Percobaan dilakukan dengan mengeringkan kopi pada ketebalan 30 cm dan 40 cm (kapasitas penuh) dibantu blower 0.5 11P, 220 volt untuk mengalirkan udara pengering di dalam bangunan tembus cahaya dan mengeluarkan uap air bahan yang telah diuapkan dari bangunan tersebut. Hasil percobaan memperlihatkan bahwa penutup transparan mampu memanfaatkan 70% radiasi matahari yang jatuh di permukaannya. Pada kondisi radiasi termanfaatkan rata-rata sebesar 435.1 W/m². laju aliran udara sebesar 2520...
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