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Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal
Published by Universitas Jenderal Soedirman
ISSN : 08531629     EISSN : 08531629     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
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).
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 29, No 1 (2012)" : 8 Documents clear
Upaya Penurunan Tingkat Kanibalisme Udang Windu (Penaeus monodon) dengan Penambahan Dosis Suplemasi TriptofanYang Berbeda Suharyanto Suharyanto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 29, No 1 (2012)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2012.29.1.230

Abstract

The aim of this experiment was to find out the suitable dosage of tryptophan  mixed  in diet of  trash fish were fed and to decrease canibalism levels of tiger prawn (Penaeus monodon) reared in  the aquarium. The research was conducted in research station of Research Institute for Brackishwater Aquaculture Maranak, Maros South Sulawesi for 28 days.Twelve aquaria were used of this research and the dimention of 60 x 40 x 40 cm.  Tiger prawn seed of post larva of 35th from hatchery were used to this research and the dimention of 1,4 ± 0.1 cm body length and 0,01 ± 0.01 g body weight.  Twentyfive pieces of tiger prawn seed were spreaded on the each aquaria. The treatments were applied of dosage of tryptophan were mixed in the trash fish  (Sardinella sp) as much as  (A): 0 % of  biomass total, (B): 0,5 %, (C): 1,0 % and (D): 1,5 % of  biomass total with three replicates respectively. Variables monitored growth of body weigth, canibalism levels, survival rate of twentyfive tiger prawn seed and water quality. Experimental design used complate randomized design. During of rearing were fed trash fish with frequency of twice a days of dosage 15 % of total body weight. The result showed that the   tiger prawn seed fed the diet with additional 0,5 - 1,5 % tryptophan had significantly lower (P<0.05) cannibalisms compared to the tiger prawn seed feed the control diet.  The tiger prawn seed fed the diet with additional 1,5 % tryptophan had significantly higher (P<0.05) survival rate compared to the crablet fed the control diet.  However, there were not significantly different specific growth rate among the treaments.  Based on this result that additional 0,5 - 1,5 % tryptophan could be decrease cannibalisms of tiger prawn seed during experiment.
Biologi Ikan Uceng (Nemachilus fasciatus C.V.) di Sungai Banjaran Kabupaten Banyumas Slamet Risyanto; Erwin Riyanto Ardli; Isdy Sulistiyo
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 29, No 1 (2012)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2012.29.1.235

Abstract

A research on fish biology Nemachilus fasciatus CV was conducted in River Banjaran Banyumas. The purpose of this study was to assess the biological aspects, including the nature of growth, Gonado somatic index, fecundity, sex ratio and natural food habits. The method used is survey, the technique used was stratified random sampling.  Banjaran river was divided into nine stations: three stations on the upstream side of the river, three stations in the middle of the river and three stations on the river downstream. The results showed the data aspects of the biology of N. fasciatus in rivers Banjaran was allometrik growth, the gonado somatic index ranged from 5.40 to 17.46%. The highest fecundity of 7,567 items found in fish N. fasciatus which has a total length of 74 mm and 3.25 g body weight. Fecundity was as low as 1,665 points with fish body length of 58 mm and 2.02 g body weight.  The sex ratio is 1:1,25.  The natural food with the highest frequency of occurrence was on Pediastrum and low frequency of occurrence is in Cosmarium and Bronchionus.
Perilaku Harian Rusa tutul (Axis-axis) di Kawasan Industri Pt Kujang Cikampek Jawa Barat Salasti Nafi Izlima; Erie Kolya Nasution; Soeminto Soeminto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 29, No 1 (2012)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2012.29.1.231

Abstract

A study entitled daily spotted deer (Axis-axis) Behavior in the PT Kujang Cikampek Industrial Area of West Java” wa aimed to determine the daily bahaviour and types of vegetation as habitat for spotted deer in PT Kujang Cikampek West Java. The study was conducted by using survey methods, daily behavioural observations were made by the Scan sampling and Time sampling method. The vegetation data were collected by census method.  Five individual of the spotted deers in the Industrial Area of PT Kujang Cikampek were captured and classified by age and sex distribution.  The result showed the highest activity is performed either in the feeding behavior for the breeding region is 45,67%. While the average breeding area of 1b eating behavior was 46,26%. The pattern of eating behavior the most performed is grazing and the most preferred vegetation is grassland.
Aktivitas dan Karakter Kitinase Isolat Trichoderma sp. W34 A4 Asal Kepulauan Raja Ampat Papua Barat Nunuk Widhyastuti; Muhammad Ilyas
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 29, No 1 (2012)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2012.29.1.228

Abstract

The study of chitinase activity was conducted on 13 selected fungal isolates Trichoderma sp. from Raja Ampat, West Papua and Mount Bromo, East Java. The result showed that fungal isolate Trichoderma sp. W34 A4 isolated from Raja Ampat has the highest chitinase activity (14.3 x10-3 U/ml). The highest chitinase was produced by Trichoderma sp. W34 A4 grown on the media containing colloidal chitin (1%), polypepton (0.1%), KH2PO4 (0.1%) and MgSO4.7H2O (0.05%) for 2 days of incubation. Those isolates produced high chitinase with initial pH range 3.0-8.0 and levels of colloidal chitin between 0.2% -2.0%. Chitinase of Trichoderma sp. W34 A4 has optimal activity at pH 5.0 and in temperature 45 °C. Chitinase from those isolate stable at a wide pH range but it is not stable to the high temperatures.
Karakterisasi Ganoderma spp. di Kabupaten Banyumas dan Uji Peran Basidiospora dalam Siklus Penyakit Busuk Batang Nuniek Ina Ratnaningtyas; Siti Samiyarsih
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 29, No 1 (2012)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2012.29.1.233

Abstract

Ganoderma sp., one of fungi belonged to the family Ganodermataceae, order of Aphyllophorales, class of Basidiomycetes is very widely spread.  This fungus is a soil-borne, and has parasitic and saprophytic features which are interesting because of their two contradictory roles namely harmful and beneficial effects.  As a plant parasite, Ganoderma is able to cause root and stem rot of tropical perennial crop plantation and forest which cause serious losses.  The fungus is well known as white rot fungus which is able to cause a wood rotten by lignin destruction.  On the contrary, the fungus has some advantages such as medical potentials.  In this study, some collections and characterization of Ganoderma spp. found in Banyumas has been conducted.  The technique used for sampling Ganoderma spp. mushroom is a survey with Purposive Random Sampling method.  Samples were taken from nature in the area of Banyumas Regency and its natural substrate were noted. Characterization based on the macromorphology and micromorphology was done for grouping and identification.  Micromorphology observations were done by slicing and painting samples with plants microtechnique method.  The result showed that there were 43 Ganoderma spp isolates, distributed from low to high lands of 100 - 500 m above sea level.  The most fungi were found on the high lands, in Baturraden sub district, which included 16 isolates.  The interesting finding is the discovery of Ganoderma spp. which attacked flamboyant plant (Delonix regia) in West Purwokerto sub district.  Based on micromorphology observations, these fungi form a basidium and basidiospore inside and below as well as the surface of the fruit body.  Some species were also found having such phenomenon so it needs further research on the role of basidiospora in the cycle of stem rot disease, especially basidiospora role in the initiation of diseases infection.  As the soil infecting mushroom, study of the disease spreading is focused more on the role of the mycelium found in the remaining plants as infecting the material.  Basidiopore role in the spread of the disease is rarely studied, but actually basidiospore is a potential source of genetic variation.
Pertumbuhan dan Laju Sintasan Krablet Kepiting Bakau (Scyla serrata) dengan Pemberian Jenis Pakan Rucah yang Berbeda Suharyanto Suharyanto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 29, No 1 (2012)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2012.29.1.229

Abstract

The aim of this experiment was to find out information on suitable trash fish for the growth and survival rate of mud crabs (Scyla serrata). The research was conducted in Marana Brackishwater pond research station of the Research Institute for Coastal Aquaculture, Maros, South Sulawesi for 28 days. Twelve  aquaria of 60 x 40 x 40 cm3 were used in this experiment using Completely Randomized Design. Treatments tested were four differents species of trash fishes i.e. A; sibula   (Sardinella sp), B; tembang  (Clupea sp), C; Anchovy (Stolephorus sp) and D; Tilapia  (Tilapia mosambica), each with three replications. Twentyfive pieces of crablets  of  5,9 + 0,2 mm in carapace width and 0,06 + 0,02 g in body weigth were stocked in each  aquarium.  Crablets  were then fed with trash fish with the dosage of 15% of total biomass per days  given twice a day. The results showed that the growth of crablets fed with tilapia was the best trash fish (P>0.05), among the treatments which were tested. The use of other fishes were not significantly different  (P>0.05) on the crablet growth.
Keanekaragaman dan Kekerabatan Syzygium aksesi Purwokerto Edy Purnomo Hadi; Yayu Widiawati; Sukarsa Sukarsa
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 29, No 1 (2012)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2012.29.1.234

Abstract

A study on the diversity and phenetics of Syzygium in Purwokerto has been conducted. The aim of this study was to find out the diversity and phenetic relationship of Syzygium cultivars. The method used in this study is explorative survey, by recording all available cultivars.  The data were analysed descriptively and the data were analysed with UPGMA. The result of this study showed that there were four spesies dan seven cultivars of Syzygium namely S. aqueum, S. samarangense including cultivar S. samarangense ‘Kaget Merah’, ‘Kaget Putih’, ‘Kaget Hijau’, ‘Madura Putih’, ‘Delima’, ‘Lilin Merah’, ‘Lilin Merah Jambu’, S. malaccense dan S. jambos. The results of phenetic analysis showed that there were four groups namely S. samarangense, A. aqueum, S. malaccense, and S. jambos.
Potensi Jamur Mikoriza Arbuskular dalam Mengendalikan Penyakit Busuk Pelepah pada Tanaman Jagung Soenartiningsih Soenartiningsih
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 29, No 1 (2012)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2012.29.1.232

Abstract

Sheath blight disease is important disease on maize, it caused by Rhizoctonia solani. biological control using arbuscular mycorrhizal is assumed can reduce expansion of the soil borne disease. The experiment was carried out using arranged in completely randomized design of factorial, with different density spore and two isolate of AM fungus ie: Glomus sp and Acaulospora mellea. There were three replicates arbuscular mycorrhizal at 100-300 spore per 10-30 grams propagule was inoculated to each planting hole and inoculated R. solani fungi 30 days after planting. Sheath blight disease observation was taken 10-50 days after inoculation R. solani, while observation their  histology stalk and root at 50 days after inoculation of R. solani. The result of the experiment that inoculation  of AM fungus with 100-300 spore have potential to control sheath blight disease on maize. At the plant infected by AM fungi isolate of Glomus sp its emphasis reach of 21,9%–40,98%, while infected by A. mellea emphasis reach 21,48%–39,93%. The damage of stalk tissue at the plant infected by R. solani was more acute than at the plant infected by both R. solani and mycorrhizal fungus even they had the same symptom, that was an necrosis at their stalk tissue. The plant infected by R. solani and mycorrhizal fungus were not different with the root tissue of healthy plant.

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