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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
 154   155   156   157   158 
PENINGKATAN SINTASAN LARVA IKAN KERAPU SUNU (Plectropomus leopardus) MELALUI MANAJEMEN PEMELIHARAAN YANG SESUAI Daniar Kusumawati; Yasmina Nirmala Asih; Ketut Maha Seti
BERITA BIOLOGI Vol 18, No 1 (2019)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v18i1.2951

Abstract

Survival rate of coral trout seed produced from aquaculture was relatively low. In 2015, high mortality was found at the early stage of larval development (<D10), approximately 64.37 % of the total production. There has been no standard management for coral trout (Plectropomus leopardus) larval rearing, which was used to adopt management for grouper (Epinephelus spp.) larval rearing. This study was to apply suitable management for coral trout larval rearing into aimed to decrase mortality at early stage larval development and to increase survival rate. There were two different managements in this study: A. applying the results of previous research of coral trout larval rearing from 2004 to 2015, and B. using standard management for grouper larval rearing. The results showed that management A was more suitable management for coral trout larval rearing compared to management B. Management A resulted in the increasing of survival rate by five times (p=0.0056) and of growth rate at early stage by 1.15 times (p=0.2338) higher than those of management B.  
TIGA SPESIES PERONOSCLEROSPORA PENYEBAB PENYAKIT BULAI JAGUNG DI INDONESIA Ummu S. Rustiani; Meity S. Sinaga; Sri Hendrastuti Hidayat; Suryo Wiyono
BERITA BIOLOGI Vol 14, No 1 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i1.1860

Abstract

Downy mildew is very detrimental disease of maize production in Indonesia. Adequate information regarding the identification key based on morphological and morphometric characteristic of the causal fungi of maize downy mildew in Indonesia is limited. Study for detection and identification of morphological, morphometric, and moleculer base is urgently required. Artificial sporulation induction method performed to obtain the morphology of the fungus as a whole.The fungi were morphologically identified as symptomatic maize downy mildew collected from 13 provinces in Indonesia.Three species, namely P. maydis, P.sorghi, and P. philippinensis were identified based on the shape,size, and conidial cell wall thickness, size and number of branching coniodiophores, and long sterigmata.Confirmation by PCR succesfully amplified target DNA of P. maydis, P. sorghi, and P. philippinensis. The identification key of third species of Peronosclerospora accurately to be used in identification of Peronosclerospora causes downy mildew of maize in Indonesia.This identification key is recommended as a method of identification of the causal downy mildew of maize in Indonesia.
EKOLOGI CAPUNG JARUM CALOPTERYGIDAE: Neurobasis chinensis DAN Vestalis luctuosa DI SUNGAI CIKANIKI, TAMAN NASIONAL GUNUNG HALIMUN Pudji Aswari
BERITA BIOLOGI Vol 7, No 1&2 (2004)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v7i1&2.1236

Abstract

Studies on ecological aspects of two species of damselflies, Neurobasis chinensis and Vestalis luctuosa (Odonata:Calopterygidae) were conducted at Cikaniki stream, Taman Nasional Gunung Halimun (TNGH).The two species of damselflies were selected from 26 species of dragonflies that have been collected in the study area.Selection was based on their appearance which is big in size, metallic colour are conspicuous and also on the habitat specificity.
PERSEBARAN DAN HABITAT PERSINGGAHAN BURUNG MIGRAN DI KABUPATEN NATUNA PROVINSI KEPULAUAN RIAU Tri Haryoko
BERITA BIOLOGI Vol 13, No 2 (2014)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v13i2.696

Abstract

Indonesia has become an important part in the flyway of migratory birds due to the existing of high variety of habitat types that support for their life.Until now, the migratory birds records from Natuna Regency, which is the border area of Indonesia located in the South China Sea, are limited. This study was aimed to determine distribution and stopover habitat of migratory birds in the Natuna Regency area. The study was conducted in 2011 and 2013.Result from observations showed 14 species of migratory birds that belongs to five district birds families were identified in this area.They were Ardeidae (two species), Charadriidae (four species), Scolopacidae (six species),Laridae(one species) and Hirundinidae (one species).Southern Bunguran area has the highest record of migratory birds than other regions in Natuna. The migratory bird used four types of stopover habitat in Natuna Regency. i.e mangrovs, coastal, lakes / wetlands and other open areas.
KERUSAKAN MORFOLOGI TUMBUHAN KOLEKSI KEBUN RAYA PURWODADI OLEH BENALU (LORANTHACEAE DAN VISCACEAE) Sunaryo Sunaryo; Erlin Rachman; Tahan Uji
BERITA BIOLOGI Vol 8, No 2 (2006)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i2.2038

Abstract

Purwodadi Botanic Gardens-LIPI (The Indonesian Institute of Sciences), East Java, is an ex-situ conservation area accommodating various living plant collections.Identification of the parasitic plants conducted in August 200S found five species parasiting 10S trees belonging to SI species of 24 genera. The highest parasite frequency was found on Ficus (Moraceae). The mistletoes found in the study area were Dendrophthoe pentandra (L.) Miq. (Loranthaceae), Macrosolen tetragonus (Bl.) Miq. (Loranthaceae),Scurrula atropurpurea (Bl.) Dans. (Loranthaceae), Viscum articulation Burm. f. (Viscaceae), and Viscum ovalifolium DC. (Viscaceae).The damaging effect of the parasitic mistletoes generally occurred on the distal part of branches or twigs of the host tree species.
PENGARUH JAMUR PHYTOPHTHORA COLOCASIAE TERHADAP PENYEBARAN VARIETAS-VARIETAS COLOCASIA ESCULENTA DI P. JAWA RAZALI YUSUF
BERITA BIOLOGI Vol 3, No 7 (1987): (Supplement)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i7.1372

Abstract

RAZALI YUSUF.1987.The influence of Phytophthora colocasiae on distribution of Colocasia esculenta varieties in Jawa island. Suppl.Berita Biologi 3 : 17 - 19.Field observation on varieties of Colocasia esculenta var.esculenta and C.esculenta var.antiquorum showed that the distribution of these two botanical varieties has distinct pattern. The population of C.esculenta var.esculenta are more prevalent in the lowland, whereas the population of C.esculenta var.antiquorum are confined to higher elevations.Differences in their succeptibility to the attack of the fungus Phytophthora colocasiae'it one important factor which determines the natural distribution of these two botanical varieties.
PERBANYAKAN TANAMAN BUAH NAGA BERDAGING BUAH MERAH {Hylocereus costaricensis) MELALUI TEKNIK KULTUR JARINGAN Priyono Priyono
BERITA BIOLOGI Vol 7, No 5 (2005)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v7i5.878

Abstract

Hylocereus costaricensis is new important fruit in Indonesia. One of constrain in its development is limitation of planting material.The aim of the research is to study the regeneration H. costaricensis through micro shoot induction of node explants. The experiments were carried out in the Tissue Culture Laboratory of Indonesian Coffee and Cocoa Research Institute. Experiment on microshoots proliferation stage was arranged in a Factorial Completely Randomized Design, with three replications.The first factor was Kinetin concentration consisted of five treatments i.e.: 0, 2.5, 5.0, 7.5 and 10.0 mg/1.The second factor was Indole acetic acid (IAA) concentration consisted of five levels i.e.: 0, 0.25, 0.5, 0.75 and 1 mg/1. Microshoots multiplication stage was arranged in a Factorial Completely Randomized Design,with three replications. The first factor was polyvinyl pyrrolidone (PVP) concentration consisted of six treatments i.e.: 0, 0.25, 0.5, 0.75, 1.0 and 1.25 %. The second factor was Cystein concentration consisted of four treatments i.e.: 0, 25, 50 and 75 mg/1. The microshoots rooting stage the results experiment was laid in a Factorial Completely Randomized Design, with three replications. The first factor was Giberalic acid (GA3) consisted of five treatments i.e.:0, 0.25, 0.5, 0.75 and 1 mg/1. The second factor was Boric acid concentration consisted of four levels i.e.: 0, 50, 100 and 150 mg/1. In the microshoots proliferation stage the results showed that there was interaction between IAA and Kinetin concentration on the microshoots proliferation and the number of shoot per explnat. The best results were obtained from the treatment 0.75 mg/1 IAA + 7.5 mg/1 Kinetin, whereas in this treatment the rate of microshoots proliferation and the number of microshoots perexplant was 50 % and 3.9, respectively. In the microshoots multiplication stage, the results showed that there was interaction between PVP and Cystein concentration. The best results were obtained from the treatment 0.75% PVP + 75 mg/1 Cystein, whereas in this treatment the rate of microshoots multiplication and the number of microshoots per explant was 95% and 6.3, respectively. In the rooting stage, the results showed that there was interaction between GA and Boric acid concentration. The experiment indicated that 0.5 mg/1 GA3 + 100 mg/1 Boric acid showed the best result to stimulate root induction of the in vitro microshoots propagation, whereas in this treatment the percentage of rooted microshoots and the hight of plantlet were 95% and 5.7 Cm, respectively.
AKTIVITAS ANTIBIOFILM BAKTERI Escherichia coli OLEH BAKTERIOFAG SECARA IN VITRO Evi Triana
BERITA BIOLOGI Vol 17, No 1 (2018)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v17i1.3234

Abstract

Several Escherichia coli strains are pathogenic. Excessive and noncompliant use of antibiotics and disinfectants may cause bacteria to build resistance mechanisms. Forming biofilms cause eradicatation more difficult. An effective cleaning action required antibiofilm and antimicrobial agents that have different mechanisms with antibiotics and disinfectants. Bacteriophages are potential candidates because they meet these requirements. Bacteriophages produce specific polysaccharide lyase enzymes capable of degrading biofilm extracellular polymeric matrix. Study was aimed to determine concentrations of specific bacteriophage showing Escherichia coli antibiofilm activity was conducted. The results of this study showed that the most effective concentrations bacteriophage EC RTH 04 to prevent, inhibit, and degrade Escherichia coli EC 3 biofilms were 106, 102, dan 102 respectively.
Then Ieyer Chromatography Suatu tjara terachir analisa chromatographis Ischak Lubis
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.v1i2.1531

Abstract

Kemadjuan2 jang ditjapai dalam pengetahuan kimia dewasa ini banjak dirintis oleh.kemadjuan2 jang diperoleh dalam metode2 analisis,Salah satu metode2 tersebut adalah analisa chromatographis janji besar peranannja dalam usaha2 pernisahan dan pemurnian senjawa alami.
INTERAKSI ANTARA Trichoderma harzianum, Penicillium sp. DAN Pseudomonas sp. SERTA KAPASITAS ANTAGONISMENYA TERHADAP Phytophthora capsicilN VITRO Nandang Suharna
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.v6i6.1203

Abstract

A preliminary study has been done to know antagonism capacities of three isolates of Trichoderma harzianum, two isolates of Penicillium sp.and one isolate of Pseudomonas sp.against Phytophthora capsici in vitro and interaction among those six antagonists.The highest antagonism capacity possessed by Penicillium sp. KN1, respectively followed by Penicillium sp.KN2,Pseudomonas sp. GH1 and the three T. harzianum isolates. Except for those three T. harzianum isolates, the two Penicillium sp.isolates and Pseudomonas sp. GH1 isolate indicated anti fungal activity against this fungal pathogen.Based on microscopic observation, there was no mycoparasitism within three T.harzianum isolates against Ph. capsici.While interaction occurred among antagonist showed that Pseudomonas sp.GH1 was antagonistic against the other five antagonists.Growth inhibition by Penicillium sp. KN2 showed against this plant pathogen.Beside the need of further study in green house and field, this result appears the need of study to clarify and identify of the chemical subtance of anti fungal possessed by Penicillium sp. KN1 dan Penicillium sp. KN2.The result showed that the six microbes most potential for biological control agents against Ph. capsici.

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