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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 3 Documents
Search results for , issue " Vol 31, No 3 (2014)" : 3 Documents clear
Pengujian Skala Karamba Jaring Apung Benih F2 Lukas (Puntius bramoides) Produk Pradomestikasi (I): Kualitas Telur, Sintasan Benih dan Kemampuan Memijah Susatyo, Priyo; Sugiharto, Sugiharto
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 31, No 3 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2014.31.3.306

Abstract

Pre domestication research has been done on fish catches from the Serayu river,  Banyumas, lukas fish (Puntius bramoides) and brek fish (P. orphoides) in natural ponds. The parents as pre domestication product is already successfully demonstrated the ability of adaptive in the new environment in terms of aspects of natural food, has been known to their periodically hormonal profiles, profiles of gametogenesis and spawning capabilities in the new environment (natural pond). Further research aims to determine : (1) The degree of eggs hatching of lukas, (2) survival rate of  F2 seeds and (3) the degree of mortality in the floating net on Serayu river. (4) how long it will take and how the ability of the  post spawning F1 parents to be able to spawn again. Research using survey method. Some units of floating net used for maintenance, testing spawning and growth of parents and seeds of lukas. The results : (1) The degree of eggs hatching between 51%-89%; (2) degree of viability of seeds in floating net  is 54%-92%; (3) while the mortality rate of  seeds 8%-48% and (4) the length of time it takes  male and female parents to reach the next spawning period is ± 6 months. The F1 parents spawn after 6 months on a scale of cages.
Tipe Echolokasi serta Struktur Larynx pada Miniopterus dan Rhinolophus Rachman, Abdul; Sugiyanto, Johanes; Nurhidayat, Luthfi; Nuriliani, Ardaning; Rofiqoh, Aswi A.; Hermawan, Agus; Narulita, Roesma
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 31, No 3 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2014.31.3.209

Abstract

A bat is the only mamal with true flight ability and have capability to perform echolocation. Miniopterus  and Rhinolopus  are bat species that have some different morphological characteristics but both of them commonly live in the cave. The research were purposed to study the differences and connection of echolocation call type and larynx’s structure of Miniopterus and Rhinolopus  The two bat species were collected from 20th and 23th cave of Japanese Cave Complex, Kaliurang, Sleman, Yogyakarta. Specimens were taken to the laboratory for further analysis. Echolocation signals of both bat species were recorded using ultrasonic microphone and were analyzed with Batscan 9.0 software. Specimens were subjected for anatomical and histological structure analysis of the larynx. Anatomical structure observations were carried out with specimens dissection and they were fixed in 20% formol solution. Some samples of larynx of each species were processed and stained with Alizarin Red’s-Alcian Blue staining for larynx’s bones observation. Histological preparation of larynx was performed using paraffin method and stained with Hematoxylin-Eosin and MAF. The results showed that echolocation signals of Minipterus  have lower frequency (peak frequency between 44.1-51.6kHz) compared to that of Rhinolopus  (peak frequency between 54.4-64.1 kHz). However, Miniopterus  has better ability to modulate the signal frequency than Rhinolopus  Both species are able to produce a long-duration signal but Rhinolopus  can produce longer signal duration. These results can be related to the differences of larynx’s anatomical and histological structure of both species which are equally able to keep the intensity of echolocation signals but have different work mechanisms.
Kajian Tingkat Bahaya Erosi Dan Indeks Nilai Penting Di Hutan Rakyat Di Desa Candiwulan Kecamatan Kutasari Kabupaten Purbalingga Saputro, Gunanto Eko; Sastranegara, Moh. Husein
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 31, No 3 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2014.31.3.210

Abstract

This study was aimed at assessing the danger level of erosion, vegetation conditions, and the relationship between the level of erosion and vegetation in the community forest in Candiwulan Village, District Kutasari, Purbalingga. The results showed that the rate of erosion in forest areas studied was at 56.62 or go to class II or mild (erosion rate between 15-60 tonnes / ha / year), plants that are found in forest areas quite diverse.  There are12 plant seedling species, 14 species of saplings plants, 11 species of pole plants and 12 species of trees.  While in zone II there were only 9 plant species.  The calculation included the relative density, relative frequency and relative dominance to known important value index (IVI) to determine the role of each of the plants in both zones. The dominant role of plants at the seedling stage is coffee with IVI 70.49, coffee saplings showed INP 51.77,  the teak poles with IVI 76.69 and tree of Albizia with IVI 108.79. The vegetation diversity in the area of community forest Candiwulan Village has caused mild erosion at hazard level. The cultivating patterns and the type of crops cultivated influence the erosion and run off because it affects the land and the soil cover and the production of organic material that serves as a ground cover.

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