Judul: Host acceptance and food efficiency by Epilachna vigintioctopunctata on several host plants
Abstrak: Epilachna vigintioctopunctata (Fabricius) (Coleoptera: Coccinellidae) is commonly known as hadda beetle. This insect is a phytophagous and causes a serious pest and built a tremendous damage to solanaceaeous crops. The suitability of a certain host plant could affect on feeding activity and digestibility of food that support insect growth and development. Recently, food acceptance and suitability on several varieties of host plants by E. vigintioctopunctata has not been reported in Indonesia. The objective of this research was to investigate the host acceptance and food efficiency by E. vigintioctopunctata on several host plants. Both larvae and adults bite on six species of leaves Solanum melongena, S. tuberosum, Lycopersicon esculentum, Physalis angulata, Cucumis sativus, and Cucurbita pepo. The larvae and adult beetles mostly fed on S. melongena with the areal leaf consumed 6.75 and 1.771 cm2/insect/day, followed by L. esculentum, 4.416 and 1.35 cm2/insect/day. The average rate of consumption on L. esculentum by early 4th instar larvae was 1.5 x 105 μg/insect/day higher than S. melongena was 1.0 x 105 μg/insect/day. On the other hand, the average growth rate and efficiency of conversion of digested food were 3723.7 μg/insect/day and 43.17% higher than in S. melongena than L. esculentum were 2984.8 μg/insect/day and 19.94% respectively. This beetle has low consumption but high efficiency of utilization food on S. melongena.
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Judul: Siklus Hidup dan Demografi Kumbang Lembing Henosepilachna vigintioctopunctata Fabricius (Coleoptera: Coccinellidae) Pada Tanaman Inang yang Berbeda
Abstrak: Phytophagous lady beetle Henosepilachna vigintioctopunctata Fabricius is a serious pest of solanaceous crops, such as eggplants and potatoes. The beetles distributes from sub temperate of Asia to the tropics of Indonesia. The beetle feeds on several species of agricultural plants as well as wild solanaceous plants. Their life cycle has been known in a certain species of plant, however none comparing both their life cycle and demography on different host plants. It has been well known that the species of insect responds physiologically different to the different of food plants. This research aimed to study the respons of H. vigintioctopunctata to the different of given food plants of S. torvum, S. nigrum, S. melongena, and Brugmansia suaveolens. Life cycle, demography, life table, and survivorship curve of the beetle were studied. Results showed that the longest time in life-cycle of H. vigintioctopunctata fed with S.nigrum (93,8 days, male and 104,1 days, female), respectively. The shortest time in life-cycle of H.vigintioctopunctata fed with S.melongena (16,5 days,male and 16,9 days, female), respectively. Highest number of eggs per egg mass occurred in H. vigintioctopunctata fed by S. nigrum (26,20 eggs per egg mass) and the lowest number occurred ini beetle fed by B. suaveolens (19,80 eggs per egg mass). Statistic demography of H.vigintioctopunctata showed that the highest value of gross reproductive rate was in S. torvum (5,5 individu) and the lowest value was in B. suaveolens (0,3 individu). The highest value of net reproductive Rrate was in S. torvum (2,11) and the lowest value was in B.suaveolens (0,02). The shortest of generation time was in S. melongena (5,9 days) and the longest of generation time was in S.nigrum (29,33 days). The higher value of intrinsic growth rate were in S.torvum (0,04) and S.nigrum (0,04), respectively and the lower value were in S. melongena (0,01) and B.suaveolens (0,01), respectively. Life-table analysis showed that the highest value of life expectation of egg and larval stages found on treatment with foliage of S. torvum. The highest value of mortality was found on S. nigrum (32,86%) and the lowest was found in S. melongena (16,67%). Based on value of its life-table, the most suitable host for development of H. vigintioctopunctata were S. torvum and S. nigrum. Survivorship curve of H. vigintioctopunctata showed that the highest number of mortality occurred in egg and larval stage.
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Judul: Peranan Public Relations Pada Perusahaan Media Massa Televisi Setelah Relaunch Perusahaan (Kasus Marketing Public Relations Perusahaan Media Massa Televisi Trans7)
Abstrak: Strategi yang ditempuh perusahaan untuk menaikkan citranya adalah dengan melakukan hubungan dengan publik atau kegiatan Public Relations. Peranan Public Relations tidak hanya ke dalam perusahaan atau organisasi saja tetapi juga keluar perusahaan. Kegiatan Public Relations berperan dalam menyusun strategi komunikasi yang tepat untuk menaikkan citra perusahaannya. Dalam hubungannya dengan pencitraan positif terhadap publik internal, Public Relations berperan untuk menumbuhkembangkan tanggung jawab sosial perusahaan. Dengan demikian, akan menciptakan motivasi kerja, loyalitas, dan peningkatan kinerja karyawan. Penelitian ini bertujuan untuk : 1). Mengkaji proses perubahan manajemen perusahaan dari TV7 menjadi Trans7, dan 2). Mengkaji peran PR dalam pembentukan citra perusahaan dan mengkaji strategi yang dilakukan perusahaan dalam mempromosikan program yang ditayangkan setelah perusahaan melakukan relaunch. Metode penelitian ini menggunakan pendekatan kualitatif. Penerapan metode kualitatif ini menggunakan strategi penelitian kasus. Trans7 terletak di Menara Bank Mega, Jalan Kapten P. Tendean Kav. 12- 14A Lantai 20, Jakarta Selatan. Berawal dari kerjasama strategis antara Para Group dan Kelompok Kompas Gramedia pada tanggal 4 Agustus 2006, Trans7 lahir sebagai sebuah stasiun swasta yang menyajikan tayangan yang mengutamakan kecerdasan, ketajaman, kehangatan penuh hiburan serta kepribadian bangsa yang membumi. Trans7 yang semula bernama TV7 berdiri dengan ijin dari Departemen Perdagangan dan Perindustrian Jakarta Pusat dengan Nomor 809/BH.09.0S/III/2000. Pada tanggal 22 Maret 2000 keberadaan TV7 telah diumumkan dalam Berita Negara Nomor 8687 sebagai PT. Duta Visual Nusantara Tivi Tujuh.
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