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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Biotika: Jurnal Ilmiah Biologi Cropsaver : Journal of Plant Protection Indonesian Journal of Limnology
Hikmat Kasmara
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science Immunology & microbiology Library & Information Science

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Effectiveness of Storage Time Formulation of Bacillus Thuringiensis Against Aedes aegypti Larvae (Linnaeus, 1757) Melanie Melanie; Mia Miranti Rustama; Inriyani Sintia Sihotang; Hikmat Kasmara
CROPSAVER Vol 1, No 1 (2018)
Publisher : Departemen Hama dan Penyakit Tumbuhan Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (600.668 KB) | DOI: 10.24198/cs.v1i1.16999

Abstract

Aedes aegypti is known as the main vector of dengue fever in Indonesia which causes a high number of deaths and become an outbreak every year. This disease is generally controlled by breaking the life cycle of mosquitoes with restricted breeds and using synthetic insecticides. So far biological agents from natural enemies and natural pathogens have been developed to anticipate the negative effects of synthetic insecticides. Bacillus thuringiensis is well known as entomopathogenic bacteria that can control various insect pests of cultivated plants and vector insects, such as Ae.aegypti.  B. thuringiensis can form endospores that produced toxin to Ae.aegypti, while the advatages are safe against non-target organisms such as natural predators and parasites, safe for mammals and humans and do not pollute the environment. Effective duration of B. thuringiensis in infecting Ae. aegypti is an important thing to be studied, moreover it is important to know the effectiveness of the expired formulation on the market and the residual effect. This ensures that the use of B. thuringiensis remains safe and does not create new problems such as Ae. aegypti  resistance. The experimental research was used bioassay method, toxicity test was performed B. thuringiensis expired and non expire as comparison at concentration 0 ppm (control), 0,3 ppm; 0.1 ppm; 0.07 ppm; 0.05 ppm; 0.03 ppm; 0.01 ppm. The parameters observed were mortality for 48 hours of toxicity test that results were indicated by LC 50, LC90 and recidual values. The results obtained were LC50 and LC formulations B.thuringiensis expired 0.305 ppm and 1.513 ppm much higher than the non expire LC50 and LC formulations of 0.0363 ppm and 0.8971 ppm. The recidual effect of expired B. thuringiensis on larvae Ae. Aegypti was only effective until day 12, whereas B. thuringiensis  that  non expire formulation was effectively until day 14.Keywords : Ae. aegypti, B. thuringiensis, mortality, recidual values, expired formulation
PERTUMBUHAN Lumbricus rubellus Hoffmeister, (1843) DI MEDIA KOMPOS BERBAHAN DASAR SAMPAH ORGANIK KAMPUS UNPAD DAN PENGARUH VERMIKOMPOS YANG DIHASILKAN TERHADAP PERTUMBUHAN TANAMAN KANGKUNG DARAT (Ipomoea reptans Poir.) Hikmat Kasmara; Candra Raharja Pramasyka; Asep Zainal Mutaqin
BIOTIKA Jurnal Ilmiah Biologi Vol 13, No 2 (2015): BIOTIKA DESEMBER 2015
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bjib.v13i2.10109

Abstract

INFEKSI JAMUR ENTOMOPATOGEN Metarhizium anisopliae (Sorokin) (1883) YANG DIAPLIKASIKAN BERSAMA SENYAWA ANDROGRAFOLIDA TERHADAP MORTALITAS LARVA Crocidolomia pavonana (Fabricus) (1794) Ghina Ganiyya; Melanie Melanie; Hikmat Kasmara
BIOTIKA Jurnal Ilmiah Biologi Vol 12, No 2 (2014): BIOTIKA DESEMBER 2014
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bjib.v12i2.10083

Abstract

KONDISI TERUMBU KARANG DAN STRUKTUR KOMUNITAS KARANG PERAIRAN KABUPATEN KARAWANG PROVINSI JAWA BARAT Tatang Suharmana Erawan; Hikmat Kasmara; Betty Mayawatie
BIOTIKA Jurnal Ilmiah Biologi Vol 15, No 2 (2017): BIOTIKA DESEMBER 2017
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bjib.v15i2.19297

Abstract

Penelitian  mengenai  kondisi  terumbu  karang  dan  struktur  komunitas  karang  telah  dilakukan  di perairan Kabupaten Karawang Provinsi Jawa Barat pada bulan April 2017. Tujuan penelitian mengumpulkan data-data yang diharapkan akan merupakan data dasar bagi penelitian lebih lanjut dan pengelolaan lingkungan daerah tersebut. Penelitian dilakukan dengan jalan menjelajahi perairan dan mengecek keberadaannya pada lokasi yang ditunjukan oleh peta pelayaran Indonesia. Metode yang digunakan: Manta Taw dan Line Intercept Transect (LIT). Terumbu karang tersebar mulai dari tepian pantai sampai lebih kurang 5 km ke tengah laut, dikenal dengan sebutan Karang-Karang Sedulang, merupakan karang takat (patch reefs) dangkal yang sering menyebabkan perahu nelayan kandas, sebagian muncul ke permukaan pada saat laut surut. Sebagian gugusan terumbu karang telah hilang tertutup  lumpur,  sebagian  lain  kondisinya  termasuk  dalam  kategori  buruk/rusak  memerlukan pengelolaan. Teridentifikasi 21 species karang keras (hard coral), biota lainnya terdiri dari karang lunak (soft coral), Algae makro: Padina dan Halimeda; sponge, Tridacna (giant clam), bintang ular, gorgonia,  hydroid  dan  zooanthid.  Species  karang  yang  dominan:  Montipora  informis,  Acropora tenuis, A. aspera, A. palifera dan Montipora sp. yang dominan di suatu gugusan terumbu tetapi tidak dominan atau bahkan tidak ditemukan di gugusan terumbu lainnya. Berdasarkan ukuran koloni (=coverage) hanya Montipora informis dan Acropora aspera yang dominan.
POTENSI INSEKTISIDA NABATI MENGANDUNG EUGENOL DAN SITRONELLAL DALAM PENGENDALIAN Helopeltis antonii HAMA TANAMAN Anacardium occidentale Melanie Melanie; Aidha Utami; Hikmat Kasmara; I Wayan Laba
BIOTIKA Jurnal Ilmiah Biologi Vol 14, No 1 (2016): BIOTIKA JUNI 2016
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bjib.v14i1.14409

Abstract

Telah dilakukan penelitian mengenai potensi insektisida nabati yang mengandung Eugenol dan Sitroenellal terhadap Helopeltis antonii (Hemiptera: Miridae) hama pada tanaman jambu mete (Anacardium occidentale). Tujuan dari penelitian ini adalah untuk mengetahui efektivitas dan daya simpan insektisida nabati yang mengandung Eugenol dan Sitronellal untuk mengendalikan hama H. antonii dan tingkat serangan hama tersebut terhadap tanaman jambu mete. Metode yang digunakan adalah eksperimental dengan uji hayati di Rumah Kaca laboratorium uji hayati Balitro, menggunakan Rancangan Acak Lengkap (RAL) pola faktorial yang terdiri atas dua faktor, yaitu waktu simpan dengan 5 taraf dan insektisida yang digunakan 6 taraf, dilakukan sebanyak 4 ulangan. Aplikasi dilakukan dengan metode semprot serangga dan semprot pakan. Parameter yang diamati adalah mortalitas hewan uji dan tingkat serangan pada tanaman. Data dianalisis menggunakan uji sidik ragam dengan taraf kepercayaan 95%. Apabila terdapat perbedaan nyata, analisis dilanjutkan dengan menggunakan uji jarak berganda dengan taraf nyata 5%. Hasil penelitian menunjukkan meningkatnya mortalitas H. antonii di minggu ke-6, ke-8, dan ke-10 akibat aplikasi Eugenol dan di minggu ke-6, hingga ke-12 pada aplikasi Sitronellal, tingkat kerusakan pada tanaman menurun pada minggu ke-6 hingga ke-10 dengan metode semprot pakan. Aplikasi metode semprot serangga, Sitronellal meningkatkan mortalitas H. antonii di minggu ke-6 hingga ke-12, dan di minggu ke-6 dan ke-8 pada penggunaan Eugenol, tingkat kerusakan menurun mulai minggu ke-6 hingga ke-12.
BENTHIC FORAMINIFERA AS BIOINDICATOR OF CORAL REEF ENVIRONMENTAL CONDITION BASED ON FORAM Index IN NATUNA ISLANDS, PROVINCE OF RIAU ISLANDS Kinanti Gitaputri; Hikmat Kasmara; Tatang S. Erawan; Suhartati M.
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (113.862 KB) | DOI: 10.29244/jitkt.v5i1.7743

Abstract

Foraminifera is one of single-celled protozoa, living in the water environment especially marine waters. This organism can be used as bioindicator of environmental conditions of coral reefs through a simple index called FORAM Index. The purpose of this research are to obtain FORAM Index values​, to know any species of benthic foraminifera bioindicator of coral reefs environmental conditions that have been found and to find out whether there is a relationship between FORAM Index to the condition of coral reefs based on coral coverage percentage. The research used survey method on sediment sampling and measurement of environment parameters by P20 LIPI team in April 2011. Several important steps in this research such as sediment samples preparation, sample observation, and sample identification. The results showed that there were 80 species and 31 genera benthic foraminifera bioindicator of coral reefs environmental conditions were found in the Natuna Islands. The condition of coral reefs in the Natuna Islands based on FORAM Index (FI) values ​​ranged from 2.6 to 5.94, and overall there was a positive relationship between FORAM Index and the condition of coral reefs based on coral coverage percentage i.e., the increase of FI was followed by the increase of coral coverage percentage.  However, in the terms of correlation there were several different results, there was a strong correlation and a weak correlation. Keywords: foraminifera, FORAM index, coral reef.
WATER CONDITIONS OF CORAL REEFS WITH FORAMINIFERA BENTHIC AS BIOINDICATOR BASED FORAM INDEX IN BANGGAI ISLANDS, PROVINCE OF CENTRAL SULAWESI Khairunisa N. Aulia; Hikmat Kasmara; Tatang S. Erawan; Suhartati M. Natsir
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (299.791 KB) | DOI: 10.29244/jitkt.v4i2.7797

Abstract

Research of water condition of coral reefs with foraminifera benthic as bioindicator based on FORAM Index (FI) in Banggai Islands, Province of Central Sulawesi was conducted by P2O-LIPI, Jakarta team in July 2011.  This study was an exploratory research, conducted using survey methods. Sediment sampling was collected by a Van Veen Grab and measurement of other biotic and abiotic parameters was performed in 8 point sampling stations scattered in Banggai islands. Sediment samples were analyzed qualitatively and quantitatively to identify the types of foraminifera, determines FORAM Index, and find out  the relationship between FORAM Index with condition of coral reefs views by coral cover. The results showed that foraminifera benthonic as bioindicator were 75 species, which belong to  33 genera. Water conditions of Banggai Islands by FORAM Index (FI) values ​​ranged from 2.99 to 5.54. There was a fairly close relationship between FI with condition of coral reefs views by percentage coral cover in Banggai Islands. Keywords : coral reefs, FORAM Index, foraminifera benthic, Banggai Islands
The Dynamic of Blue-Green Algae (Cyanobacteria) in Eutrophic Tropical Waters, The Cirata Reservoir Fariha Luthfiani; Sunardi Sunardi; Hikmat Kasmara
Indonesian Journal of Limnology Vol. 1 No. 1 (2020): Indonesian Journal of Limnology
Publisher : Indonesian Society of Limnology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.123 KB) | DOI: 10.51264/inajl.v1i1.4

Abstract

The quality of reservoir waters depends on changes in their physical, chemical, and biological components. Changes in these parameters lead to the emerging of many problems in the reservoir, such as eutrophication and changes in the composition of the phytoplankton community in the reservoir ecosystem. This eutrophication impact can trigger an explosion of dangerous phytoplankton population, such as blue-green algae (Cyanobacteria). Research on the relationship between water quality and the community structure of Cyanobacteria has been carried out. This study used secondary data from the water monitoring report of the Cirata Reservoir from 2013-2017. This study aimed to obtain information on the community structure of Cyanobacteria and environmental parameters that affected the abundance of Cyanobacteria in the reservoir. Species abundance, diversity index, and dominance index were analyzed to determine changes in the community structure of Cyanobacteria in each of the years. Cyanobacteria abundances were classified using cluster analysis. Water quality parameters such as temperature, transparency, pH, carbon dioxide, nitrate, nitrite, and zooplankton abundance as independent variables, and levels of Cyanobacteria abundances as the dependent variable was analyzed using discriminant analysis. This study showed that the abundance of Cyanobacteria in the Cirata Reservoir is dominated by the Stanieria (a genus of the Pleurocapsales order) every year and the parameter that significantly affects the level of Cyanobacteria abundance was nitrate (NO3-N).
Co-Authors Aidha Utami Asep Zainal Mutaqin Betty Mayawatie Candra Raharja Pramasyka Fariha Luthfiani Ghina Ganiyya I WAYAN LABA Inriyani Sintia Sihotang Khairunisa N. Aulia Kinanti Gitaputri Melanie Melanie Mia Miranti Rustama Suhartati M. Suhartati M. Natsir Sunardi Sunardi Tatang S. Erawan Tatang Suharmana Erawan