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Biota
Published by Universitas Islam Negeri Mataram
ISSN : 20863586     EISSN : 24608483     DOI : -
Core Subject : Health, Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Medicine & Pharmacology
Focus and Scope of Biota on Bioscience, includes: cell biology and genetics, biodiversity, ecology, physiology and biotechnology. Biota covers all life forms, including microbes, fungi, plants, virus, animal and human. Focus and Scope of Biota on Biology Education, includes: Experimental Research, Class Action Research, Qualitative Research, Quantitative Research, Model Learning Development, Media Learning Development, and Learning Evaluation.
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Articles 5 Documents
 1 
Search results for , issue "Vol 13 No 2 (2020)" : 5 Documents clear
The Ability of Soil Candida albicans Secreted Potential Protease and Lipase Ririn Puspadewi; Putranti Adirestuti; Mira Andam Dewi; Wakilatul Hasanah
Biota Vol 13 No 2 (2020)
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/jb.v13i2.245

Abstract

Candida spp secreted a different kind of extracellular enzymes. Protease and lipase are the enzymes that are commonly used in the food and pharmaceutical industries. This study aimed to examine protease and lipase activity of Candida tropicalis isolated from the soil of the Medicinal Plant Garden of the Faculty of Pharmacy, Universitas Jenderal Achmad Yani, Indonesia. Candida isolate was subjected to the fermentation process to obtain bioactive metabolites. The result was analyzed using ANOVA within a 5% interval of confidence, continuing with PostHoc. The result showed the Candida tropicalis metabolite giving the best proteolytic index value (0,6556 ± 0,0090) U/mL. The metabolite isolate of Candida tropicalis had the highest activity, amounting to 5,776 ± 0,495 U/mL. The best results of lipolytic index value (0,394 ± 0,053) U/mL. The Candida tropicalis metabolites produced the highest lipase enzyme after nine days of fermentation in 5.2917±0,0167 U/mL.
Rheotaxis Response Based on Sexual Dimorphism in the Green Swordtail Fish, Xiphophorus hellerii Muhammad Irsyad Abiyusfi Ghafari; Vita Fitrianti
Biota Vol 13 No 2 (2020)
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/jb.v13i2.298

Abstract

Morphological distinctions between males and females of a species are referred to by sexual dimorphism. It may result from various selection pressures affecting either sex or both and may occur in any dioecious species, including Green Swordtail fish, which are sexually reproductive. This study examined the different rheotaxis responses of Xiphophorus hellerii based on different sexes and morphological features. We analyzed ten adult males, ten gravid females, and ten non-gravid females of Xiphophorus helleri collected down the river and transferred into the column. We counted the number of the individual that performed positive rheotaxis (+), negative rheotaxis (-), and indifference response (0). The result showed different rheotaxis responses shown by male, non-gravid female, and gravid female X. hellerii. The highest percentage of positive rheotaxis response (movement against the current) was shown by non-gravid female X. hellerii, reaching up to 89%. Morphological differences between male, non-gravid female, and gravid female X. hellerii appear to affect the orientation and ability of X. hellerii in giving response against current and certainly has an impact on their survival in nature.
Diversity, Abundance, and Distribution Patterns of Natural Enemy Insects on Chili (Capsicum annum L.) in Bincau Village, Banjar Regency, South Kalimantan Manap Trianto; Fajri Marisa; Moh Dahri Kisman
Biota Vol 13 No 2 (2020)
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/jb.v13i2.304

Abstract

Chili is a widely cultivated plant by the community because of its profit. Currently, in maintaining the quality of chili, people commonly use a lot of pesticides. In contrast, naturally, there are biological agents in the shape of natural enemy insects, more effective, and environmentally friendly. This study aims to determine the diversity, abundance, and distribution patterns of natural enemy insects in chili plantation (Capsicum annum L.) at Bincau Village, Martapura District, Banjar Regency, South Kalimantan. The sample is collected by pitfall trap, yellow pan trap, and sweep net method. Obtained data are analyzed by Shannon Wienner index (H'), Meyer abundance index, Morisita index (Id), and PCA method for environmental parameter analysis. The results showed the diversity of natural enemy insects on chili plants was moderate (H' = 2.396). Furthermore, the highest abundance in research is demonstrated on Hymenoptera order, which consisted of 9 families, 16 species, and 1,009 individuals. The distribution pattern of natural enemy insects in chili plantations is clustered (Id > 1). Based on the PCA analysis method, the temperature has the most impact on natural enemy insects' presence in this study.
Deteksi Awal Aktivitas Antibakteri dari bakteri air tambak terhadap bakteri patogen akuakultur Stella Magdalena; Sindy Sindy; Yogiara Yogiara
Biota Vol 13 No 2 (2020)
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/jb.v13i2.305

Abstract

Aquaculture is currently experiencing massive loss due to the outbreak of pathogenic bacteria. One of the outbreak causes is the development of pathogenic bacterial resistance to the antibacterial. The problem can be solved using microorganisms that can produce new antibacterial compounds. The purpose of this research was to obtain bacteria from fishpond water that could produce antibacterial compounds. About two out of 81 isolates could produce antibacterial compounds. Those two isolates were obtained from saltwater fishponds in North Jakarta (TS2) and Harapan Island (PHY). All fishpond water was grown in marine broth or Luria broth. Extraction of antibacterial compounds was performed using four types of solvents: chloroform, dichloromethane, ethyl acetate, and methanol. Each of the solvents showed a different result. The extraction can only be successfully performed using chloroform and dichloromethane. Extraction using dichloromethane showed a larger inhibitory clear zone than chloroform. Based on 16S rRNA gene sequencing, PHY isolate was identified as Bacillus sp. and TS2 as Acinetobacter sp. In conclusion, isolate TS2 and PHY, which produced antibacterial compounds, showed potential use as aquaculture probiotics.
Stomata Profile Comparisons in Abaxial and Adaxial Zones of Dendrobium aphyllum and Arachnis flos-aeris Leaves Febri Yuda Kurniawan; Agung Dwi Santoso
Biota Vol 13 No 2 (2020)
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/jb.v13i2.310

Abstract

Stomata activity in orchids is related to orchids' adaptation process to their environment. This study aimed to investigate the stomata profile, comprising of anatomical structure and density of the two orchids species, Dendrobium aphyllum, and Arachnis flos-aeris. Data was collected by printing the leaves' surface using glue and observed at 09.00 am and 09.00 pm, then analyzed using Image raster 3.0 software and MS. Excel. The stomata of D. aphyllum and A. flos-aeris were characterized by anomocytic type. Results showed that the highest stomata density was 1177.78 um2, found on the abaxial part of D. aphyllum. The adaxial leaves of both species were classified as low or no stomata. These two orchid species were epiphyte yet grow in different habitats. Arachnis flos-aeris exposed to direct sunlight tends to reduce transpiration rate, resulting in fewer stomata than D. aphyllum less exposed to sunlight.

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