Judul: Keanekaragaman dan KeIimpahan Komunitas Makrozoobenthos pada Hutan Mangrove Hasil Rehabilitasi di Taman Hutan Raya Ngurah Rai, Bali
Abstrak: Saat ini luas mangrove telah mengalami degradasi karena berbagai sebab dan permasalahan yang dihadapinya. Degradasi hutan mangrove Indonesia terjadi akibat pemanfaatan yang kurang tepat atau mengalami perubahan fungsi, misalnya menjadi areal pertambakan udang. Hal tersebut terjadi karena pada beberapa dekade ini, pemanfaatan mangrove terus meningkat bukan saja dari segi pemanfaatan lahannya saja tetapi juga dari segi pemanfaatan kayu, baik seeara tradisional maupun komersial. Pengaruh yang ditimbulkannya sangat luas apabiJa ditinjau dari aspek sosial, ekonomi, dan ekologi.
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Judul: Analysis of Community Structure Association Biota in the Mangrove Ecosystem Rehabilitation Area in Tangerang Regency
Abstrak: Wilayah pesisir Kabupaten Tangerang memiliki kawasan mangrove yang sedang dalam proses rehabilitasi. Makrozoobentos merupakan biota asosiasi pada kawasan ekosistem mangrove. Penelitian ini bertujuan untuk menganalisis sebaran makrozoobentos dan komponen utama yang mempengaruhi keberadaan makrozoobentos pada ekosistem mangrove di pesisir Kabupaten Tangerang. Penelitian dilaksanakan pada bulan Februari hingga Maret 2022 di tiga desa, yaitu Desa Ketapang, Desa Patramanggala, dan Desa Tanjung Pasir, Kabupaten Tangerang. Analisis data terdiri atas penentuan stasiun pengambilan contoh, pengolahan data vegetasi mangrove, pengolahan data makrozoobentos, dan penutupan kanopi menggunakan aplikasi ImageJ. Hasil analisis komponen utama menunjukkan sebaran makrozoobentos di pesisir Kabupaten Tangerang di tiga desa dipengaruhi oleh suhu tanah, pH air, penutupan mangrove, tipe substrat, dan jenis mangrove. Komposisi jenis makrozoobentos di Desa Ketapang dan Tanjung Pasir didominasi oleh kelas Gastropoda, serta di Desa Patramanggala didominasi kelas Bivalvia., The coastal area of Tangerang Regency has a mangrove area that is in the process of being rehabilitated. Macrozoobenthos is association biota in the mangrove ecosystem area. This study aims to analyze the distribution of macrozoobenthos and the main components that affect the presence of macrozoobenthos in the mangrove ecosystem on the coast of Tangerang Regency. The research was conducted from February until March 2022 in three villages, Ketapang Village, Patramangala Village, and Tanjung Pasir Village, Tangerang Regency. Data analysis consisted of determining sampling stations, processing mangrove vegetation data, processing macrozoobenthos data, and canopy closure using the ImageJ application. The results of the main component analysis showed that the distribution of macrozoobenthos on the coast of Tangerang Regency in three villages was influenced by soil temperature, water pH, mangrove cover, substrate type, and mangrove species. The composition of the macrozoobenthos species in the Ketapang and Tanjung Pasir villages was dominated by the Gastropod class, and in Patramanggala Village, it was dominated by the Bivalvia class.
Keyword: makrozoobentos, mangrove, pesisir, coastal, macrozoobenthos, mangrove

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