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Roni Koneri
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Jurusan Biologi FMIPA Universitas Sam Ratulangi
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Jurnal Bios Logos
Published by Universitas Sam Ratulangi
ISSN : 20889569     EISSN : 26563282     DOI : https://doi.org/10.35799/jbl.11.2.2020.28153
Core Subject : Health, Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology
JURNAL BIOS LOGOS is the journal published by Department of Biology, Faculty of Mathematics and Natural Sciences, Sam Ratulangi University. The aims of the journal are to publish original research papers and article review in biology science i.e. botany, zoology, molecular biology, microbiology, ecology, diversity and conservation, taxonomy and biogeography. BIOS LOGOS is published two times per year (February and August)
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 6 Documents
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Search results for , issue "Vol 3, No 2 (2013): JURNAL BIOSLOGOS" : 6 Documents clear
Kebiasaan Makanan Ikan Gelodok (Periophthalmus sp.) di Kawasan Mangrove Pantai Meras, Kecamatan Bunaken, Kota Manado, Sulawesi Utara (The Food Habit of Mudskipper Fish, Periophthalmus sp. in Mangrove Areas of Meras Beach, Bunaken District, Manado City, No Gosal, Lidyana Maya; Katili, Deidy Yulius; Singkoh, Marina FO; Tamanampo, Jan EWS
JURNAL BIOS LOGOS Vol 3, No 2 (2013): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.3.2.2013.4429

Abstract

AbstrakTelah dilakukan penelitian untuk mengamati kebiasaan makanan ikan gelodok di kawasan mangrove Pantai Meras, Kecamatan Bunaken, Kota Manado, Sulawesi Utara. Kebiasaan makanan ikan gelodok menyangkut jenis-jenis makanan, persentase nilai dari suatu jenis makanan dan nilai bagian terbesar dari komposisi makanannya. Metode yang digunakan di lapangan adalah metode random sampling dengan 30 individu ikan sebagai sampel. Identifikasi jenis-jenis makanan ikan menggunakan mikroskop dengan pembesaran 100x. Hasil analisis dengan menggunakan Indeks Bagian Terbesar didapatkan bahwa makanan utama adalah Crustacea, makanan pelengkap adalah zooplankton, fitoplankton, Polychaeta dan makanan tambahan adalah Hexapoda.Kata kunci : Ikan gelodok, kebiasaan makananAbstractA study to observe the food habit of mudskipper fish in mangrove areas of Meras Beach, Bunaken District, Manado City, and North Sulawesi was conducted. This feeding manner included food types, the percentage value of a particular food and the largest value of food composition. The random sampling method using 30 fish was applied in the site location. The food type of this fish was identified using a microscope with 100x magnification. Results of this research showed that the main food was crustacean, the complementary food was zooplankton, phytoplankton, Polychaeta, and the supplementary food was Hexapoda.Keywords : mudskipper fish, food habits
Keanekaragaman Vegetasi Mangrove di Pantai Tanamon Sulawesi Utara (Diversity of Mangrove Vegetation in Tanamon Beach North Sulawesi) Yuningsih, Eka; Simbala, Herni E.I; Kandou, Febby E.F; Sumarto, Saroyo
JURNAL BIOS LOGOS Vol 3, No 2 (2013): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.3.2.2013.4434

Abstract

AbstrakStudi keanekaragaman dan indeks nilai penting telah dilakukan pada vegetasi mangrove di kawasan Pantai Tanamon dengan menggunakan metode purposive sampling. Ukuran petak ditentukan dengan menggunakan kategori pengelompokan semai (2x2 m2), pancang (5x5 m2), tiang (10x10 m2) dan pohon (20x20 m2). Keanekaragaman vegetasi mangrove di Pantai Tanamon ditentukan dengan menggunakan rumus indeks keanekaragaman Shannon-Wienner. Hasil penelitian menunjukkan bahwa keanekaragaman vegetasi tergolong sedang dengan nilai indeks 1,412. Di kawasan Pantai Tanamon terdapat 6 jenis mangrove yaitu Avicennia marina, Sonneratia alba, Xylocarpus granatum, Rhizophora apiculata, Nypa fruticans dan Terminalia catappa. Indeks nilai penting tertinggi pada pada X. granatum untuk kategori semai (72,977 %), A. marina untuk kategori pancang (80,357 %), A. marina untuk kategori tiang (91,623 %) dan S. alba untuk kategori pohon (142,191 %).Kata kunci: mangrove, keanekaragaman, PantaiTanamonAbstractA study on the diversity and the importance value index of mangrove vegetation in the area of Tanamon Beach was conducted using purposive sampling method. Plot size was determined using classification category of seedling (2x2 m2), stake (5x5 m2), pole (10x10 m2) and tree (20x20 m2). The diversity of mangrove vegetation in the Tanamon Beach was determined using the diversity index formula of Shannon-Wienner. The results indicated that vegetation diversity was medium and the index value was 1.412. The mangrove vegetation consisted of 6 species, i.e. Avicennia marina, Sonneratia alba, Xylocarpus granatum, Rhizophora apiculata, Nypa fruticans and Terminalia catappa. The highest importance-value-index was in the X. granatum seedling (72.977 %), A. marina stake (80.357 %), A. marina pole (91.623 %) and S. alba tree (142.191 %).Keywords: mangrove, diversity, Tanamon Beach
Uji Ekstrak Daun Tithonia diversifolia sebagai Penghambat Daya Makan Nilaparvata lugens Stal. pada Oryza sativa L. (Evaluation of Tithonia diversifolia Leaf Extract as Feeding Capacity Inhibitor of Nilaparvata lugens in Oryza sativa L.) Mokodompit, Tri A.; Koneri, Roni; Siahaan, Parluhutan; Tangapo, Agustina M
JURNAL BIOS LOGOS Vol 3, No 2 (2013): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.3.2.2013.4430

Abstract

AbstrakWereng Batang Coklat (WBC) (Nilaparvata lugens Stal.) merupakan serangga hama yang dapat merusak tanaman padi (Oryza sativa L.). Tanaman kipait (Tithonia diversifolia) berpotensi sebagai insektisida nabati karena memiliki senyawa toksik terhadap serangga. Penelitian ini bertujuan untuk mengkaji aktifitas makan akibat pemberian ekstrak daun kipait. Konsentrasi ekstrak daun kipait yang digunakan adalah 0% (kontrol), 1%, 3%,5% dan 7% dalam RAL (Rancangan Acak Lengkap) dengan 5 kali ulangan. Hasil penelitian menunjukkan bahwa pemberian ekstrak daun kipait berpengaruh terhadap penghambatan daya makan WBC. Penghambatan makan tertinggi terjadi pada konsentrasi 7% setelah 24 jam.Kata kunci : penghambatan daya makan, Nilaparvata lugens Stal., Tithonia diversifoliaAbstractBrown planthopper (BPH) (Nilaparvata lugens Stal.) Is an insect pest that can damage rice plants (Oryza sativa L.). Kipait (Tithonia diversifolia) is potential as a bioinsecticide because it is toxic to insects. This study aimed to evaluate the feeding activity that was influenced by kipait leaf extract. The concentration of kipait leaf extract were 0% (control), 1%, 3%, 5% and 7%. The experiment design was CRD (completely randomized design) with 5 replications. The results showed that the kipait leaf extract influenced the feeding inhibition of BHP. The highest inhibition occurred in the concentration of 7% after 24 hours treatment.Keywords : brown planthopper, feeding inhibition, Tithonia diversifolia
Karakter morfologi akar sebagai indikator kekurangan air pada padi lokal Superwin (Root-morphological characters as water-deficit indicators in local rice Superwin) Torey, Patricia Claudya; Nio, Song Ai; Siahaan, Parluhutan; Mambu, Susan M
JURNAL BIOS LOGOS Vol 3, No 2 (2013): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.3.2.2013.4431

Abstract

Abstrak Evaluasi karakter morfologi akar telah dilakukan untuk menentukan karakter morfologi akar yang potensial sebagai indikator adanya kekurangan air pada padi (Oryza sativa L.) di antara panjang akar, volume akar, berat basah akar, berat kering akar, rasio akar:tajuk dan rasio panjang akar:tinggi tanaman. Eksperimen ini dilakukan di rumah kaca dan menggunakan 2 varietas padi (Superwin dan IR 64) pada fase vegetatif  yang ditumbuhkan pada media tanah di polybag dengan perlakuan kekeringan (tidak disirami selama 14 hari) dan disirami sampai kapasitas lapang (kontrol). Panjang akar dan rasio panjang akar:tinggi tanaman dapat dijadikan indikator kekurangan air pada padi Superwin dan IR 64. Superwin yang merupakan padi sawah dapat dipertimbangkan untuk ditanam di lahan kering. Kata kunci: indikator, kekeringan, morfologi akar Abstract Root-morphological characters in rice (Oryza sativa L.) were evaluated to determine the potential characters as water-deficit indicators among the length, volume, fresh weight, dry weight, ratio root:shoot and ratio root length:plant height. The experiment was conducted in the glasshouse using 2 rice varieties (cv. Superwin and IR 64) grown in the soil mixture at the vegetative phase. The treatments in this experiment were water deficit (without water for 14 days) and well-watered (watering until field capacity). The root length and ratio root length:plant height were potential as water- deficit indicators in Superwin dan IR 64. The upland rice, Superwin, should be considered to be cultivated in the water limited area. Keywords: drought, indicator, root morphology
Keanekaragaman Echinodermata di Pantai Tanamon Kecamatan Sinonsayang Sulawesi Utara (Diversity of Echinoderms in The Tanamon Beach, Sinosayang District, North Sulawesi) Tahe, Oktaviyanti S.; Langoy, Marnix L.D.; Katili, Deidy Y.; Papu, Adelfia
JURNAL BIOS LOGOS Vol 3, No 2 (2013): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.3.2.2013.4432

Abstract

Abstrak Echinodermata biasanya muncul di perairan intertidal terutama pada ekosistem terumbu karang. Kerusakan terumbu karang secara tidak langsung dapat menyebabkan penurunan populasi Echinodermata  yang ada di Pantai Tanamon. Penelitian ini bertujuan untuk menganalisis keanekaragaman Echinodermata di Pantai Tanamon, Kecamatan Sinonsayang, Kabupaten Minahasa Selatan, Provinsi Sulawesi Utara. Pengambilan sampel pada tiap lokasi dilakukan pada saat surut terendah dengan menggunakan metode purposive random sampling. Hasil penelitian menunjukkan bahwa Pantai Tanamon dihuni 18 jenis Echinodermata yang merupakan anggota dari 4 kelas yaitu Kelas Asteroidea (4 jenis), Kelas Ophiuroidea (6 jenis), Kelas Holothuroidea (3 jenis) dan Kelas Echinoidea (5 jenis). Keanekaragaman Echinodermata di Pantai Tanamon tergolong sedang dengan nilai indeks keanekaragaman (H’) di Stasiun I, II, III berturut-turut yaitu 1,83; 2,56; 2,37. Kata kunci : keanekaragaman Echinodermata, Pantai Tanamon, Sulawesi Utara Abstract Echinoderms usually appear in the intertidal area especially in the coral reef ecosystem. The damage of coral reef may indirectly cause the decline of the existing Echinoderms at Tanamon Beach. This study aimed to analyze Echinoderms diversity of Tanamon Beach, Sinonsayang District, South Minahasa Regency, North Sulawesi Province. Sampling was carried out in each location of the lowest tide using the method of purposive random sampling. The results showed that 18 species of Echinoderms inhabited Tanamon Beach which grouped into 4 classes i.e. Class Asteroidea (4 species), Ophiuroidea (6 species), Holothuroidea (3 species) and Echinoidea (5 species). Echinoderms diversity in the Tanamon Beach was classified into moderate class with diversity index (H ') in the Station I, II, III were 1.83; 2.56; 2.37, respectively. Keywords: Echinoderms diversity, Tanamon Beach, North Sulawesi
Isolasi dan Identifikasi Bakteri yang Toleran terhadap Fungisida Mankozeb pada Lahan Pertanian Tomat di Desa Tempok, Kecamatan Tompaso, Sulawesi Utara (Isolation and Identification Mankozeb Fungicide-Tolerant on the Tomato Farm in Tempok Village, Tompaso Lumantouw, Semuel F.; Kandou, Febby EF; Rondonuwu, Sendy B; Singkoh, Marina F.O.
JURNAL BIOS LOGOS Vol 3, No 2 (2013): JURNAL BIOSLOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.3.2.2013.4433

Abstract

AbstrakPenggunaan fungisida mankozeb secara terus-menerus untuk menangani penyakit yang disebabkan jamur dapat mengakibatkan kerusakan pada lingkungan dan mengganggu kesehatan. Penelitian ini bertujuan untuk mengisolasi dan indentifikasi bakteri yang toleran terhadap fungisida mankozeb yang terdapat pada lahan pertanian tomat di Desa Tempok Kecamatan Tompaso. Penelitian dilakukan dengan cara mengisolasi bakteri pada medium seleksi yang mengandung fungisida mankozeb 10% selama 2 hari pada suhu 37ËšC kemudian dimurnikan dengan menggunakan medium seleksi yang sama. Setelah didapatkan isolat murni, uji morfologi dan uji biokimia dilakukan. Uji morfologi dan biokimia serta identifikasi menunjukkan ada 3 genus bakteri yang toleran terhadap fungisida mankozeb, yaitu Vibrio sp., Mycobacterium sp., dan Corynebaterium sp.Kata kunci : koloni, bakteri, fungisida mankozebAbstractThe continuous use of mankozeb fungicide to treat diseases caused by fungi can result in the damage of the environment and the community health. This study aimed to isolate and identify the bacteria that are tolerant to mancozeb on the tomato farms in the Tempok Village , Tompaso District. This study was carried out by isolating the bacteria on the selection medium containing 10% mancozeb for 2 days at 37ËšC and then purifying them using the same medium. After obtaining the pure isolates, the morphological and biochemical tests were conducted. The morphological and biochemical tests as well as the identification indicated that there were 3 genera of mancozeb-tolerant-bacteria,i.e. Vibrio sp., Mycobacterium sp., and Corynebacterium sp.Keywords : colony, bacteria, mancozeb fungicide

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