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Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
ISSN : 08531629     EISSN : 08531629     DOI : -
Majalah Ilmiah Biologi Biosfera : A Scientific Journal merupakan peer reviewed jurnal yang diterbitkan oleh Fakultas Biologi Universitas Jenderal Soedirman. Media ini mewadahi hasil-hasil penelitian di bidang biologi tropika yang terbit tiga kali setahun (Januari, Mei, September).
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Articles 5 Documents
Search results for , issue " Vol 30, No 3 (2013)" : 5 Documents clear
Ular Welang, Bungarus fasciatus (Schneider, 1801), di Lereng Selatan Gunung Merapi, Daerah Istimewa Yogyakarta Yudha, Donan Satria; Eprilurahman, Rury; Hilmi, M. Fahrul; Muhtianda, Iman Akbar; Arimbi, Aisyah
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 30, No 3 (2013)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2013.30.3.136

Abstract

There are three known kraits species of the Genus Bungarus (Elapidae) inhabit Java Island, Indonesia. Two species out of the three species, i.e., Bungarus candidus (Malayan kraits) and Bungarus fasciatus (Banded kraits) are commonly found in Daerah Istimewa Yogyakarta (DIY) Province. However, a longterm  research about herpetofauna diversity in the Southern slope of Mount Merapi since 2006 until 2011 shows no species records from genus Bungarus. A nocturnal survey on April 28th, 2012 was administerd around the Kaliurang recreational area. We found snake which was suggested belong to the genus Bungarus. Detailed identification showed that this snake was Bungarus fasciatus or banded kraits snake. This finding provide the new record of genus Bungarus in Southern slope of Merapi especially since the periodical research of herpetofauna diversity which was started in 2006. To complete the data, it needs intensive research to know the distribution and species abundance of Bungarus fasciatus in Southern slope of Mount Merapi.
Pengaruh Variabel Kualitas Air terhadap Produktivitas Udang Vaname (Litopenaeus vannamei) di Kawasan Pertambakan Kabupaten Gresik, Jawa imur Pirzan, A. Marsambuana; Utojo, Utojo
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 30, No 3 (2013)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2013.30.3.137

Abstract

Water quality variable to affect the productivity of Pacific white shrimp (L. vannamei) in the brackishwater ponds. Therefore the aimed of this research to study the water quality variable  to  influent on the productivity of Pacific white shrimp (L. vannamei) in the brackishwater ponds. The research was conducted in the brackishwater ponds area that were in fish farming operation in the brackishwater ponds in the brackishwater ponds of Gresik Regency, East Java Province by conducting interviews with respondents to obtained primary data in the brackishwater ponds productivity through the submission of questionnaires, while the technical data of water quality variable were obtained by direct measurement in situ. As independent variable were water quality variables, namely: temperature, dissolved oxygen (DO), salinity, pH, total suspended solid (TSS), turbidity, nitrate, nitrite, phosphate, and total organic matter (TOM) while the dependent variable was  the productivity of Pacific white shrimp. Regression model selection “best” method was based on the backward. The results showed that productivity of Pacific white shrimp in the range from 133.3 to 3,000 kg / ha with an average of  690.38  kg / ha. Water quality variables that a have positive effect on the productivity of Pacific white shrimp  were nitrate and phosphate, while water quality variables have a negative effect on the productivity of Pacific white shrimp. were pH and TSS.
Pengaruh Bakteri Pelarut Fosfat Dan Bakteri Penambat Nitrogen terhadap Pertumbuhan Tanaman Tomat pada Tanah Masam Astuti, Yenni Widi; Widodo, Lestanto Unggul; Budisantoso, Iman
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 30, No 3 (2013)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2013.30.3.138

Abstract

Acid soil is the dried soil which has great potential for growing of agriculture commodity but this kind of soil has not been used optimally. The acid soil which has acidity reaction at pH<5,0 has Al poisonous potency, less of organic material and sensitivity toward erosion, and also less of nitrogen (N) and phosphor (P). Those problems can be solved by doing phosphate-solubilizing bacteria and nitrogen fixing bacteria inoculation. The aims of this study were to know the effect of phosphate-solubilizing bacteria, nitrogen fixing bacteria, and the mixture of both of them to the wet weight, height, level of nitrogen and phosphor of tomato plants. This research was conducted experimentally for six weeks by using completely randomized design (CRD) with 4 treatments. One treatment is a treatment without bacteria inoculation and the other treatments used bacteria inoculations which were phosphate-solubilizing bacteria inoculation, nitrogen fixing bacteria inoculation, and the mixture of both of them inoculations. Data were analyzed by using analysis of variance (ANOVA) at the 95% and 99% confidence level. The result proved the mixture of phosphate-solubilizing bacteria and nitrogen fixing bacteria is the most effective inoculation to improve the wet weight, height, level of nitrogen, and level of phosphor of tomato plant in acid soil.
Variasi Genetik Spesies Mangrove Ceriops tagal berdasarkan Marka RAPD Sukmarani, Dhuta
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 30, No 3 (2013)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2013.30.3.134

Abstract

Ceriops tagal are found at Segara Anakan Cilacap, Baluran National Park and Karimunjawa National Park. Information on the genetic diversity can be used for conservation policy. Genetic variation of C. tagal were analysed by using Random Amplified Polymorphic DNA (RAPD). This study aims to determine the genetic variation in each population and between populations C. tagal based on RAPD markers. The total DNA was extracted with CTAB extraction method. Amplification was performed using 10 primer (OPA-3, OPA-10, OPB-1, OPB-6, OPB-7, OPB-8, OPB-10, OPB-12, OPB-17 and OPB-18).  Amplification includes pradenaturation at 94°C for 5 min, followed by 45 cycles of denaturation at 94°C for 1 min, primer annealing at 37°C for 1 min, and primer elongation on 72°C for 1 min 30 sec, final extension at 72°C for 5 min and ends with holding at 4°C for 1 min. The analysis was done by changing the pattern of fragments to binary data (for bands appear = "1" and for bands do not appear = "0"). It is done using a program GenAlEx 2.1 and NTSYS-PC 6.1. A population that has the highest genetic variation (h) was Segara Anakan (0.308), followed by Baluran (0.295) and Karimunjawa (0.123). Baluran has the highest polymorphism (75.00%), Segara Anakan 69.23%, while Karimunjawa was 30.77%. The results of AMOVA, showed that the percentage of genetic variation within populations is greater (77%) than among populations (23%). The results of PCA analysis showed a similar pattern of genetic distance and UPGMA. Samples of Karimunjawa clustered with samples of the population, SA1 and SA3 likely close to the sample of Karimunjawa and SA2 are likely not one group with another sample of the Segara Anakan. Results of mantel test, the value of r = 0.347 and p = 0.02.
Fekunditas Udang Galah (Macrobrachium rosenbergii ) Betina Pasca Ablasi Unilateral dan Suplementasi Vitamin E pada Pakan Nasution, Rachmawati; Sastranegara, Moh. Husein; Sistina, Yulia
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 30, No 3 (2013)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2013.30.3.135

Abstract

This study reports on giant freshwater prawn fecundity with or without unilateral ablation treatment combined with alpha tocopherol (vit E) during 3 month culture. This exsperimental study applied 8 combination treatments of 4 different vit E dosages, i.e. 0, 200, 400, and 600 IU per kg feed with or without unilateral ablation. The results showed that treatments very highly significantly different (p<0,01) in fecundity with the 200 IU vit E dose combined with unilateral ablation was the best (45.228 ± 3.867 egg) optimum resulted in fecundity of the treated females. The overall fecundities averages were ablation group with 0 IU = 41.835 ± 837 eggs; 200 IU = 45.228 ± 3.867 eggs; 400 IU = 43394 ± 1523 eggs ; and the 600 IU = 43.718 ± 2.255 eggs, and for the non ablation with vit E group were 0 IU = 45.293 ± 2.899 eggs, 200 IU = 44.106 ± 1.759 eggs, 400 IU = 46.623 ± 2.556 eggs, and 600 IU=51.824 ± 1.132 eggs. The analysis results also proven that ablation factor gave very highly significantly (p<0,01) and vit E factor separately and in combination with ablation significantly (p<0,05) determined the females fecundity. In conclution, combination of unilateral ablation and tocopherol effective improved fecundity and the combination of unilateral ablation and vit E 200 IU the optimum resulted in giant freshwater prawn females fecundity.

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