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: Kapasitas Konsumsi Larva dan Imago Epilachna vigintioctopunctata (Fab.) (Coleoptera: Coccinellidae) pada Inang Terung (Solanum melongena) dan Tomat (Lycopersicum esculentum).
Abstrak: The hadda beetle of Epilachna vigintioctopunctata is an important pest on Solanaceae plants. Crops devoliation are strongly influenced by food consumption pattern on each host plant. The aim of this study is to compare the consumption of E. vigintioctopunctata on eggplant and tomato leaves and its influenced on the acceleration of larval growth rate, the body size, the length of each instars periods, and standing position of the beetles during eating. Each tested leaf was taken from two-month-old host plants and fed to newly hatched instars larvae. The daily leaf areal consumed and the body lengths of insect were measured until the adult died. The changing of instars morph and the position of insect on the leaf surface were also observed. The average rate of food consumption by fourth instar larvae and adult were significantly higher on eggplants 190.5 and 190.8 mm2/days compared with tomatoes 76.40 and 127.1 mm2/days, respectively. The total areas of damaging leaf within 17.2 days during larval and adult feeding stage were 2069.1 mm2/insect on eggplants and 1067.3 mm2/insect on tomatoes. Food consumption on the eggplant shortened the length of the pupal period and increased the longevity of adult to become 4 and 9 days, respectively. Highly food consumption by the third instar larvae almost produced the same size of the next fourth instar, further consumption caused the lengthened of pupal size and the shortened of adult on the eggplant compared with tomato. The growth rate of larval body size was 0.5-0.7 mm/day on eggplants significantly higher than tomatoes was 0.1-0.3 mm/day. The adult beetles tend to stay on the upper surface, while the larvae prefer on the lower surface of both eggplant and tomato leaves. In general, E. vigintioctopunctata devastated more on the eggplant than tomato leaves.
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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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