Judul: Autekologi dan studi populasi Myristica teijsmannii Miq.  (Myristicaceae) di Cagar Alam Pulau Sempu, Jawa Timur
Abstrak: Myristicaceae merupakan famili khas tropis dengan Myristica sebagai genus terbesar. Di antara 175 spesies Myristica di dunia 9 spesies merupakan spesies asli Indonesia bahkan beberapa termasuk endemik, langka dan dilindungi undang-undang. Myristica teijsmannii Miq. atau dikenal dengan nama Durenan, Palan, Kosar atau Kayu Resep merupakan salah satu spesies yang termasuk ke dalam kategori endangered atau genting menurut IUCN dengan kriteria EN B1+2C. Spesies ini memiliki penyebaran jarang dan baru dilaporkan ditemukan di Jawa Timur, yaitu di kawasan Pacitan - Gunung Kawi, Gunung Wilis, Gunung Anjasmoro dan Pulau Sempu. Data kuantitatif status populasi serta aspek-aspek ekologis, kebutuhan dan interaksi ekologis M. teijsmannii dengan habitatnya (autekologi) belum diketahui. Berdasarkan hal tersebut, maka penelitian ini dilakukan untuk mempelajari populasi, karakteristik habitat, interaksi dan kebutuhan-kebutuhan ekologis M. teijsmannii dengan memfokuskan penelitian di Pulau Sempu yang berstatus sebagai cagar alam. Studi ini dilakukan di enam lokasi yang secara estimasi visual mewakili keragaman floristik dan kondisi lingkungan Cagar Alam, yaitu Telaga Lele, Telaga Sat, Teluk Semut, Air Tawar, Gua Macan, dan Waru-waru.
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Judul: Keanekaragaman dan Pola Sebaran Spesies Tumbuhan Asing Invasif di Cagar Alam Pulau Sempu, Jawa Timur
Abstrak: The presence of invasive alien plant species has been known to cause various negative impacts on ecosystems in the invaded conservation area. This research aims to identify the diversity and distribution pattern of invasive alien plants species occurred in Sempu Island Nature Reserve, and to determine the most influential environmental factors to their dispersion. The methods used were the standard vegetation analysis and rapid assessment technique. According to the results, as many as 10 invasive alien plants species (belonging to 7 families) have been identified to occurred in this conservation area, e.g., Pistia stratoites, Ageratum mexicanum, Vernonia cinerea, Cyperus rotundus, Passiflora foetida, Centotheca lappacea, Eleusine indica, Imperata cylindrica, Hedyotis corymbosa, and Lantana camara. All invasive alien plant species found in the sampling plots had a clumped distribution pattern. The most influential environmental factors to the invasive alien plants dispersion were land slope and distance from shoreline.
Keyword: Sempu Island Nature Reserve, invasive alien plants, environmental factors, distribution pattern

Judul: Evaluation of Influenza Antibody Titers in Serum and Egg Yolk of Layers Vaccinated with Influenza Vaccines.
Abstrak: Influenza belongs to the Orthomyxoviridae family which causes upper and lower respiratory tract infection. The aim of this study was to evaluate influenza-A specific antibody titers from serum and egg yolk of hens vaccinated with quadrivalent influenza vaccines. Three Hy-line Brown layers were vaccinated with quadrivalent influenza type A and B inactivated vaccines. Vaccination was carried out three times at a dose of 0.25 ml/chicken via the intramuscular route. The first vaccination was carried out at 24 weeks of age, then boosters were performed at 28 and 32 weeks of age. Serum and egg yolk were collected every week for 20 weeks since the first vaccination. Influenza A H3N2 and H1N1 antibody titers were determined using hemagglutination-inhibition (HI) test and agar-gel-precipitation (AGP) test. Influenza-A H3N2 and H1N1 specific antibodies were detected in both serum and egg yolk from the first to twenty weeks after the initial vaccination. Highest HI geometric mean titer (GMT) of H1N1 antibody reached 26.67 HIU at nine weeks post first vaccination (p.f.v), while H3N2 antibody reached 26 HIU at six weeks p.f.v. Our result showed that influenza antibodies can be produced in layers using quadrivalent vaccines and layer chickens are able to produce equivalent antibody levels for each influenza subtype.
Keyword: antibody, egg yolk, influenza, layer chickens, serum