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Jurnal Biologi Udayana
Published by Universitas Udayana
ISSN : 14105292     EISSN : 25992856     DOI : https://doi.org/10.24843/jbiounud
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Jurnal Biologi Udayana (p-ISSN 1410-5292 | e-ISSN 2599-2856 | DOI 10.24843/jbiounud) managed by the Department of Biology, Udayana University, published in two formats namely print and online regularly twice a year (June and December).
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 262 Documents
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PERTUMBUHAN DAN AKTIVITAS ANAK TIKUS PADA PEMAPARAN CAHAYA YANG BERBEDA Ida Bagus Made Suaskara; Nastiti Kusumorini; Nurhidayat -
Jurnal Biologi Udayana Vol XI, No 1
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

Empat puluh lima (45) ekor anak tikus jantan umur 1 hari digunakan pada penelitian ini. Anak tikus dibagi menjadi satu kelompok kontrol dan dua kelompok perlakuan yaitu; 1) Kelompok perlakuan gelap (D) dan kelompok ini dibagi lagi menjadi 4 sub kelompok perlakuan berdasarkan jumlah hari gelap yaitu; a) 6 hari (D6), b) 12 hari (D12), c) 18 hari (D18) dan d) 24 hari (D24), dan 2) kelompok perlakuan cahaya (L) juga dibagi menjadi 4 sub kelompok yaitu; a) 6 hari (L6), b) 12 hari (L12), c) 18 hari (L18) dan d) 24 hari (L24). Hasil penelitian ini menunjukkan bahwa lama pemberian cahaya memberikan pengaruh yang nyata terhadap pertumbuhan dan perkembangan Nukleus Suprachiasmatik (NSC). Pertumbuhan anak tikus pada pemaparan cahaya yang berbeda selama periode menyusui menyebabkan rataan pertambahan berat badan baik pada kelompok perlakuan gelap maupun cahaya sangat lambat dengan meningkatnya lama perlakuan. Aktivitas anak tikus berupa (jarak tempuh, awal pergerakan, gerakan di tempat maupun total pergerakan di tempat, dan lama waktu istirahat semakin pendek), cenderung meningkat sebanding dengan lama cahaya. Sedangkan pada perlakuan gelap terjadi sebaliknya yaitu cenderung menurun. Tidak ada perbedaan pengaruh pemaparan cahaya dan gelap terhadap perubahan kadar hormon T3 dalam plasma darah tikus.
PENENTUAN JENIS DAN KADAR ZAT PEWARNA MERAH PADA MAKANAN YANG BEREDAR DI SEKOLAH DASAR DI KELURAHAN JIMBARAN, KECAMATAN KUTA SELATAN, KABUPATEN BADUNG Ni Komang Lisna Putri; Ni Luh Suriani; Dwi Ariani Yulihastuti
Jurnal Biologi Udayana Vol 16 No 2 (2012): Jurnal Biologi
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

Penelitian bertujuan untuk mengetahui jenis zat pewarna merah yang dominan dan kadar zat pewarna merah pada makanan yang beredar di Sekolah Dasar di Jimbaran. Penelitian dilakukan dari bulan Agustus-September 2012. Total jumlah sampel yang diambil adalah 16 sampel makanan yang berasal dari 8 sekolah yang mana 2 sampel diambil dari masing-masing makanan. Analisa dilakukan dengan 2 metode uji yaitu uji kualitatif untuk menentukan jenis pewarna dengan kertas kromatografi dan uji kuantitatif untuk menentukan kadar zat pewarna sintetis menggunakan metode spektrofotometri. Hasil penelitian menunjukkan bahwa terdapat 3 jenis zat pewarna makanan yang digunakan yaitu Rhodamin B, Allura Red dan Ponceau 4R. Kadar rata-rata pewarna tertinggi terdapat pada Ponceau 4R (10,046 ppm) dan terendah terdapat pada Allura Red (6,4456 ppm). Konsentrasi tersebut masih berada dibawah batas maksimum penggunaan pewarna makanan yang ditetapkan oleh pemerintah yaitu 70-300 ppm.
PENURUNAN JUMLAH SPERMATOSIT PAKITEN DAN SPERMATID TUBULUS SEMINIFERUS TESTIS PADA MENCIT (MUS MUSCULUS) YANG DIPAPARKAN ASAP ROKOK A.A.Sg A. SUKMANINGSIH
Jurnal Biologi Udayana Vol 13 No 2 (2009): JURNAL BIOLOGI
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

This study was conducted to observe the effect of cigarette smoke exposure on spermatogenesis of male mice. The animals used in this study were 63 male mice, aged 12 weeks. They were divided randomly into 3 groups, each group consisted of 21 mice. One group was used as control, two groups were used as treatment (KO = control, KM = mice group exposed by a light cigarette smoke, KJS = male exposed by a kretek cigarette smoke). The animals in each treatment were exposed by 21 cigarette smoke once daily for forty days. After 40 days of treatment, analysis on plasma level of nicotine was conducted and the testicles were sectioned and stained for qualitative and quantitative microscopic analysis. The results showed that plasma level of nicotine on the KJS group outweighed significantly (P< 0,05) the KM group. It was also found that the number of pachytent spermatocyt and spermatids for both KM and KJS cigarette smoke exposure reduced significantly (P < 0.05)
PENGARUH PEMBERIAN EKSTRAK DAUN EKOR NAGA (Rhaphidophora pinnata, Schott) TERHADAP PERKEMBANGAN UTERUS MENCIT (Mus musculus) BETINA YANG TELAH DIOVARIEKTOMI Maria Antonia Margaretha Ferandez; Ngurah Intan Wiratmini; Ni Gusti Ayu Manik Ermayanti
Jurnal Biologi Udayana Vol 19 No 2 (2015): JURNAL BIOLOGI
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

Tanaman ekor naga (Rhaphidophora pinnata, Schott.) mengandung zat aktif dari golongan senyawa alkaloid, flavonoid, saponin, tanin dan triterpenoid/steroid. Zat aktif yang terkandung dalam tanaman ekor naga bersifat fitoestrogen. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian ekstrak daun ekor naga terhadap perkembangan uterus mencit (Mus musculus) betina yang telah diovariektomi. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari empat kelompok perlakuan dengan masing-masing enam ulangan. PerlakuanP0 sebagai kontrol diberi NaCl 0,9% dan perlakuan P1, P2 dan P3 diberi ekstrak daun ekor naga dengan dosis 50, 100  dan 150 mg/KgBB. Ekstrak daun ekor naga diberikan setiap hari secara oral selama 14 hari sebanyak 0,2 ml dengan metode gavage. Variabel yang diamati adalah bobot uterus, diameter uterus dan ketebalan endometrium. Data yang diperoleh dianalisis dengan One Way Anova dilanjutkan dengan uji Duncan Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa pemberian ekstrak daun ekor naga (R. pinnata, Schott) menyebabkan peningkatan ketebalan endometrium sebesar 38,7% dan peningkatan diameter uterus sebesar 30,3% dibanding dengan kelompok kontrol. Dosis optimal ekstrak daun ekor naga (R. pinnata, Schott) yang berpengaruh terhadap perkembangan uterus mencit adalah 100 mg/KgBB.
DISTRIBUSI HORIZONTAL MOLUSKA DI KAWASAN PADANG LAMUN PANTAI MERTA SEGARA SANUR, DENPASAR Buya Azmedia Istiqlal; Deny Suhernawan Yusup; Ni Made Suartini
Jurnal Biologi Udayana Vol 17 No 1 (2013): Jurnal Biologi
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

A research on spatial distribution of Mollusc inhabitant seagrass bed at Merta Segara Beach Sanur, Denpasar was carried out from October to December 2012. The study site is well recognized as a place of tourist activities. Line transects with quadrate methods were applied as the sampling technique. Samples were collected in a total of 60 quadrates (10 m x 2.5 m) from four line transects with the interval of 50 m between each transect. At a sampling point chosen randomly, one transect was lined up toward the sea, then on each side of transect, 15 quadrates were laid with the interval of 20 m. The study found 31 individuals which 24 were classified as Gastropods, and 7 individuals classified as Bivalve. Overall, the study indicated that the Mollusc communities were in stable condition (H’= 3,74 and E= 0,75). The horizontal distribution of Mollusc was neither associated with seagrass percentage cover or the use of jetty piling. The spatial distribution seemed related to the use of area as tourist activities.
DAILY ACTIVITIES OF LITTLE EGRET (Egretta garzetta) AT SERANGAN ISLAND, BALI M. RHEZA RIZKI SYAHPUTRA; I KETUT GINANTRA; AA. Gde Raka Dalem
Jurnal Biologi Udayana Vol 22 No 1 (2018): JURNAL BIOLOGI UDAYANA
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.05 KB) | DOI: 10.24843/JBIOUNUD.2018.v22.i01.p01

Abstract

A study on activity of the Little Egret (Egretta garzetta) was conducted in Serangan Island, southern part ofBali between May and June 2016. The aim of this study was to find out daily activities of these birds in threedifferent habitats: lagoons, mangrove forests and muddy beaches. Preliminary observation was conducted throughAd Libitum sampling, while the sample on the main study was through a scan sampling method. The data wascollected through recording activities of the egret on interval of 30 seconds within two hours. The data collectionwas undertaken in three periods: morning, afternoon and evening. The colony of observed egrets was chosenrandomly across habitats and time periods. Data collected were descriptively or quantitatively analysed. Results ofthe study showed that from the three observation periods, the egret activities were dominated by the sameactivities, that was foraging, but with different magnitudes or percentages. In contrast, activities with the lowestpercentage was agonistic. In the lagoon area, the percentage of the activity of foraging was as follows: in themorning it was 50.15%, in the afternoon 46,62%, and in the evening 49,63%. In mangrove areas the percentage offoraging activities was as follows: in the morning it was 52.46%, in the afternoon 41.60%, and in the evening50.83%. The percentage of foraging activities in muddy beaches was as follows: in the morning it was 50.18%, inthe afternoon 42.70%, and in the evening 49,65%.Keywords : little egret, Serangan Island, daily activities, habitat, Bali
VARIASI GENETIK SOROH BRAHMANA BUDHA DI BALI BERDASARKAN PENANDA DNA MIKROSATELIT KROMOSOM-Y Ida Ayu Manik Damayanti; I Ketut Junitha; Ida Bagus Made Suaskara
Jurnal Biologi Udayana Vol 18 No 2 (2014): JURNAL BIOLOGI
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

Perbedaan sifat-sifat indukatau orang tua dalam ilmu genetika akan diturunkan secara turun-temurun kepada keturunannya sehingga terdapat variasi genetik antar individu. Variasi genetik dapat dilihat dari ragam alel pada masing-masing lokus mikrosatelit kromosom Y (Y-spesifik). Penelitian ini bertujuan untuk mengetahui variasi genetik soroh Brahmana Budha di Bali. Pada penelitian ini digunakan empat lokus DNA mikrosatelit kromosom Y yaitu DYS19, DYS390, DYS393 dan DYS395. Amplifikasi DNA dilakukan dengan menggunakan reagen PCR master mix i-Taq dengan mesin PCR dan amplikon dielektroforesis pada gel poliakrilamid 6% serta pewarnaan dengan perak nitrat. Hasil penelitian ini mendapatkan bahwa tidak semua Kabupaten di Bali terdapat Griya pendeta Budha. Ditemukan sembilan ragam alel yaitu masing-masing dua pada lokus DYS19 (200 dan 204 pb), DYS390 (203 dan 207 pb), dan DYS393 (125 dan 137 pb) dan lokus DYS395 ditemukan tiga ragam alel (123,127 131 pb). Padapenelitian ini ditemukan tiga haplotipe yaitu haplotipe A,Bdan C. Haplotipe A memiliki frekuensi paling tinggi (0,85) yang tersebar di lima daerah, haplotipe B ditemukan di daerah Karangasem sedangkan haplotipe C hanya ditemukan di Kabupaten Tabanan. Kombinasi alel pada haplotipe C yang sangat berbeda dengan haplotipe A dan B, menunjukkan bahwa individu dengan haplotipe C bukan keturunan soroh Brahmana Budha. Nilai keragaman rata-rata atau heterozigositas pada soroh Brahmana Budha di Bali rendah yaitu 0,15 ± 0,07. 
UCAPAN TERIMAKASIH - -
Jurnal Biologi Udayana Vol 15 No 2 (2011): Jurnal Biologi
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

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POTENTIAL OF LIVESTOCK MANURE FOR COAL ACTIVATION EllIN HARlIA HARlIA; MARlINA ET; MASITA R; RAHMAH KN
Jurnal Biologi Udayana Vol 21 No 1 (2017): JURNAL BIOLOGI UDAYANA
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (189.007 KB) | DOI: 10.24843/JBIOUNUD.2017.vol21.i01.p06

Abstract

The natural methane formed by bacteria in anaerobic conditions is known as biogenic gas. Gas trapped in coal, formed through thermogenesis as well as biogenesisis known as coal-bed methane (CBM). The availability of organic material as decomposition of this material into methane is continuously required for the production of methane in the coal aquifer. The aim of this research was to investigate whether or not cattle feces bacteria were able to grow and produce methane in coal. Parameters measured were Volatile Fatty Acids (VFA) and the production of biogas, such as nitrogen, hydrogen, carbon dioxide, and methane. Explorative method was used and data obtained was analyzed by descriptive approach. The results showed that the bacteria found in the feces survived in the coal and produce biogas. On day 2 when the process was at the acidogenesis phase, it produced VFA with the largest component of acetic acid. Acetic acid would undergo decarboxylation and reduction of CO2 followed by reactions of H2and CO2 to produce methane (CH4) and carbon dioxide (CO2) as the final products. ,
APLIKASI PENGGUNAAN ZPT PADA PERBANYAKAN RHODODENDRON JAVANICUM BENN. (BATUKAU, BALI) SECARA VEGETATIF (SETEK PUCUK) DYAN M.S. PUTRI; I NYOMAN SUDIATNA
Jurnal Biologi Udayana Vol 13 No 1 (2009): JURNAL BIOLOGI
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

Rhododendron javanicum Benn. has a potential use as an ornamental plant and medicine. The aim of the research was to find out the effect of plant growth regulator on the vegetative growth of Rhododendron javanicum Benn. (Batukau, Bali). The experiment was designed in Cluster Random Sampling, which the groups I consist of concentrations of plant growth regulators (Rootone F: 0 ppm (control), 100 ppm, 150 ppm, 200 ppm). Sampling time treatment of 30, 60, 90 and 120 days after planted were used for groups II. Each treatment was replicated three times. The life materials used in this experiment were shoot cuttings of Rhododendron javanicum Benn. (Batukau, Bali) with equal numbers of leaves (5-7 leaves) and were planted in the pot using media types of Asplenium roots: Cyathea roots:charcoal (2:2:1). Observed parameters were the numbers of shoots, plants height and the environmental factors (temperature and humidity). Analysis of variance (the numbers of shoots) showed that for each concentration the number of shoots was differ significantly between time treatments. The variant analysis of plant heights showed that for each concentration the plant height was not differ significantly between time treatments. The temperature during the research is 15,31 – 23,76 oC and humidity is 56,20 – 85,34 %. From this research, it can be concluded that the vegetative growth of Rhododendron javanicum Benn. (Batukau, Bali) was influenced by time treatment but not by concentration of plant growth regulator. For better results it is suggested to increase the concentrations of plant growth regulator.

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