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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 2,125 Documents
 110   111   112   113   114 
PENGGUNAAN ISOTOP ZAT ARANG (c 14) UNTUK PENGUKURAN PRODUKTIVITAS PRIMER DI LAUTAN Aprilani Soegiarto
BERITA BIOLOGI Vol 1, No 2 (1968)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v1i2.1528

Abstract

Indonesia adalah suatu negara maritim dimana hampir 70 %wilajahnja terdiri dari lautan.Sudan sepantasnja bahwa kita mulai lebih banjak memperhatikan surnber kakajaan jang masih terpendam dilaut untuk kita gali dan dimanfaatkan demi kemakmuran rakjat seluruhnja.
ANOMALI IKLIM, EVALUASI MASA TANAM, TINGKAT KEHILANGAN HASIL DAN PENGATURAN SISTEM PRODUKSI PERTANIAN DI KALIMANTAN TIMUR Elza Surmaini; Gatot lrianto
BERITA BIOLOGI Vol 6, No 6 (2003)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i6.1199

Abstract

Water availability generally enhanced accumulation crop productivity in short time caused yield accumulation in that period. El-Nino, a climate phenomenon that increased of intensity and frequency lately caused planting period determination is being more important in minimizing agriculture risk like El-Nino. El-Nino impact on season displacement and rainfall drop were carried out with weighted regression between anomaly of rainfall and sea surface temperature (SST). Then, the information use to quantify rainfall fluctuation in relation with SST. Rainfall forecasting for next 3-6 month used in evaluation of planting period and then recommend some scenario with different level yield loss.Result showed that rainfall in north-side of East Kalimantan not affected by SST, but in south-side the correlation was significant. Especially El-Nino 1997 has forwarded dry season and delaied wet season.Analysis of planting period on dry season showed that paddy, corn, and tomato had high yield loss caused by water stress.Cropping pattern and planting period modification were required to suppress the yield loss. One alternative was by implementing runoff and rainfall harvesting to avoid yield accumulation only in wet season. Conventional cropping pattern that rely on rainfall should be managed in to whole area, so that quantity and continuity of yield may be able to be optimized.
PERTUMBUHAN DAN MORTALITAS IKAN ENDEMIK BUTINI (Glossogobius matanensis Weber, 1913) DI DANAU TOWUTI, SULAWESI SELATAN Jefry Jack Mamangkey; Syahroma Husni Nasution
BERITA BIOLOGI Vol 13, No 1 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i1.651

Abstract

Lake Towuti is the largest lake in the Malili Complex covering the area of 560 km and 203 m in depth. Butini is an endemic and vulnerable fish species that consumed by the local people and have an important economic value. Various activities occured in the lake was thought to be the cause of decreasing fish populations.The objective of this study was to determine the growth and mortality of butini in Lake Towuti.This research was conducted in Lake Towuti for 12 months from Mei 2006 to April 2007.Fish samples obtained by using long lines with various number of hooks i.e. 8,10,12,14,and 16.Each depth (25, 50, 75, 100, 150, and 200 m) launched one long line unit in three zones (A, B, and C).Growth and fish mortality were calculated based on total length frequency data using FiSAT II software. The results showed that the longest size (46.20 cm) was the male found at a depth of -1,200(t-to)150 m in April in Zone C.The combined Von Bertalanffy’s growth pattern was of L(t)= 46,62 [1 - e ]. While the growth pattern for each male -0,950(t-to) -0,820(t-to) and female was L(t) =46,62 [1 - e ] and L(t)= 46,62 [1 - e ] respectively. The highest total mortality was found in Zone B (5.49 per year) occurred in female fish. The highest natural mortality was observed in Zone B (1.80 per year) occurred in male fish.The highest fishing mortality was recorded in zone B (4.08 per year) and found in female fish. The highest exploitation level was found in zone A (E = 0.76) recorded in female fish.Exploitation level of butini stock in Lake Towuti indicated over-fishing (E=0.56) recorded in Zone A.
KEANEKARAGAMAN DAN SEBARAN SERANGGA DI KAWASAN PULAU-PULAU KECIL TAMAN NASIONAL KARIMUNJAWA Erniwati Erniwati
BERITA BIOLOGI Vol 9, No 4 (2009)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v9i4.2004

Abstract

Study on diversity and distribution of insects was conducted in seven small islands of Karimunjawa National Park. Central Java from March 24 to April 7, 2006. using two collection methods i.e. pitfall traps and sweeping nets. The study collected 108 species of insects from the seven small islands included 9 ordo of 44 families. They were Lepidoptera (27 species), Odonata (7 species).Orthoptera (8 species). Mantodea (2 species). Blattodea (9 species). Hymenoptera (20 species). Diptera (8 species), Coleoptera (12 species) and Hemiptera (15 species). The highest number of species was collected from Karimunjawa Island (96 species), while other islands were low: denting (30 species).Kumbang (23 species).Kembar (26 species), Nyamiik (56 species). Parang (50 species) and Bengkuang (23 species).Base on fuction on nature, these insects could be divided into phytophagous, pollinator, decomposer, pasitoid, vector and unknown.Three species of butterflies were rediscovered during this study - they were Euploea crameri karimondjawensis.Euploea syhesier karimondjawana and Idea leitconoee karimondjawae. while one species Neplis columelle karimondjawae has not been found yet. Shannon. Simpson's, and Fisher's Alpha indexes, and similarity of Jackard to compare the difference among the islands is disccussed.
PEMBIAKAN STOMOXYS CALCITRANS (DIPTERA .: MUSCIDAE) DI LABORATORIUM ENDANG PURWANINGSIH; IYOK BUDIARTI
BERITA BIOLOGI Vol 3, No 5 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i5.1338

Abstract

E. PURWANINGSIH & I. BUDIARTI. 1986. Rearing Stomoxys calcitrans (Diptera : Muscidae) in the laboratory. Berita Biologi 3(5): 240 - 243. The stable fly 5. calcitrans was reared in the laboratory in an attempt to the study the biology. Flies captured from the field were used as parent stock. Eggs were laid within 4 days after captured. The total number of eggs deposited were 48 (15-96) with an incubation period of 1,6 (1-3) days. The larval and pupal period were 4,9 (8-23) days and 6,4 (1-3) days respectively. Hatching of eggs reach 26,1 (21,4-31,1) %. Adult emergence reach 86 %. Feeding activities was recorded for the adult as well as larvae. Flies could survive for 2-32 days in the laboratory without any sign of being able to produce offspring. Behaviour and the morphology of each development stage were discussed.
PRODUKSI KITINASE EKSTRASELULER Aspergillus rugulosus 501 SECARA OPTIMAL PADA MEDIA CAIR Nunuk Widhyastuti
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i6.839

Abstract

Chitinases hydrolyzing chitin are produced by various organisms and their physiological functions depend on their sources.Chitinases and its hydrolysis products have a broad range of applications. Increasing commercial interest in chitinase and its products has led to the need of inexpensive, reliable sources of active and stable chitinase preparations.The activity of chitinase produced by Aspergillus rugulosus 501 in liquid culture and the parameters that controlled the enzyme synthesis were studied to find optimal conditions for the enzyme production. Hydrolysis products of chitinase were detected by Reissig method. The results showed that fungal chitinase activity in media containing organic nitrogen and phosphate was higher than that in media containing trace element, organic and anorganic nitrogen but lack of phosphate. The maximum enzyme activity reached in the second day incubation.Chitinase production was affected by the initial pH of media, chitin consentration and source of nitrogen, while the consentrasion of inoculum used in this study did not affect enzyme production. High enzyme activity was found in media with initial pH 5.0-6.5. When using different consentration of colloidal chitin, chitinase activities were also found high in concentration from 0.75% tol .5%. The organic nitrogen sources gave the better results compared to the anorganic ones.
VARIASI GENETIK Lactobacillus fermentum Beijerink ASAL SAYUR ASIN BERDASARKAN ANALISIS RFLP 16S-23S rDNA ISR, RAPD-PCR DAN ERIC-PCR Sulistiani Sulistiani; Wibowo Mangunwardoyo; Abinawanto Abinawanto; Endang Sukara; Achmad Dinoto; Andi Salamah
BERITA BIOLOGI Vol 16, No 2 (2017)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v16i2.2772

Abstract

Molecular analysis of Lactobacillus fermentum isolates is essential to understand their genetic variation in relations to their roles in sayur asin fermentation process. Combination of three molecular techniques which is restriction fragment length polymorphism (RFLP) of 16S23S rDNA intergenic spacer region (ISR), random amplified polymorphic DNA (RAPD-PCR) and an enterobacterial repetitive intergenic consensus (ERIC-PCR) analysis were performed to discriminate 19 representative isolates of L. fermentum isolated from sayur asin. The result showed that L. fermentum strain D11 is distantly related to other isolates based on RFLP using HhaI restriction enzyme and RAPDPCR analyses. In addition, both of RAPD-PCR and ERIC-PCR successfully determined the genetic variation among L. fermentum strains by exhibiting distinct 4-8 bands (800-2080 bp) and 4-10 bands (280-3050 bp), respectively. A dendogram generated from UPGMA cluster analysis of both RAPD-PCR and ERIC-PCR data showed two distinct genotypic groups exist among L. fermentum isolated from sayur asin in Indonesia.
KEBIJAKAN, OTONOMI DAERAH DAN ERA PASAR BEBAS DALAM PEMANFAATAN HASIL HUTAN Aminuddin Ponulele; A Ngaloken Gintings
BERITA BIOLOGI Vol 6, No 2 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i2.1480

Abstract

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KONSERVASI KEANEKARAGAMAN HAYATI TAMAN NASIONAL GUNUNG HALIMUN BAGI PEMBANGUNAN DAERAH TERLANJUTKAN Hadi S Alikodra
BERITA BIOLOGI Vol 6, No 1 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v6i1.1162

Abstract

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KEANEKARAGAMAN KOMUNITAS KRUSTASEA DI KEPULAUAN MATASIRI KALIMANTAN SELATAN Rianta Pratiwi; Nirmalasari Idha Wijaya
BERITA BIOLOGI Vol 12, No 1 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i1.525

Abstract

Studies on the community diversity of crustaceans have been conducted in the waters of Matasiri Islands, South Kalimantan, from 19th November to 1st December 2010. This research was conducted to determine the density, diversity and the presence of crustacean fauna in the waters of South Kalimantan, especially in the Matasiri Islands. Samples were collected using trawl gear operated by KR (Research Ship) BarunaJaya VIII in four Stations and three Stations of free collecting along the islands. Free sampling was conducted along the beach and the reef edge by breaking live and dead rocks, and digging sand and mud in the mangrove or using hand net around the beach of Matasiri Islands. Collection is also done using the gillnet gear which is installed in shallow water during high tides about 4 hours.The samples were collected during low tide. The results obtained were 1882 individuals covering 86 species and 19 families. The diversity index ranges between 0.97 (the lowest at Station 3 of free collecting) and 3.74 (the highest in Station 3 of trawl). While the similarity index ranged from 0.36 (the lowest in Station 1 of trawl) to 0.97 (the highest in Station 3 of free collecting). Penaeidae prawn has the highest density in each observed station. Portunidae crab has the second highest density. South Kalimantan waters especially Matasiri Islands is still in good condition for crustacean life.

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