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INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,562 Documents
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The Diversity of Dragonflies (Odonata) in the Joben Resort Area, East Lombok Juni Kartini; Syachruddin Syachruddin; Mohammad Liwa Ilhamdi
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3458

Abstract

Dragonfly is a family of insects that are closely related to water. During their life cycle, especially when laying eggs and at the stage of dragonfly nymphs, they spend their lives in healthy water areas because dragonfly nymphs are very sensitive to polluted water quality. Therefore, dragonflies have an important role for the sustainability of the ecosystem, namely acting as predators and indicators of environmental pollution. The high diversity of dragonflies in an area indicates that the area is still not polluted because the environment supports the life of dragonflies. This study aims to determine the diversity of dragonflies (odonata) in the Joben Resort area of ​​East Lombok. This research is an exploratory descriptive study conducted from November to December 2021. Data collection was carried out 4 times and was repeated within 1 month in the morning and evening (08.00-17.00 WITA). The method used is a survey method with a sweeping net technique following a 500 m research path on 3 research paths, namely lane 1 (the river that borders Joben Ecopark), lane 2 (the path leading to the Resort Office and Joben Ecopark) and lane 3 (the river that flows through Joben Ecopark). Bordered by rice fields and Kokok Joben Brain Baths). The calculation of the diversity index of dragonflies uses the Shannon-Wienner formula (H'). The results showed that the types of dragonflies (odonata) found in the Joben Resort Area consisted of 20 species with a total number of individuals found from 3 lanes as many as 864 individuals. The diversity index of dragonflies in the Joben Resort area of ​​East Lombok is 2,309. The conclusion is that the diversity of dragonflies in the Joben Resort area of ​​East Lombok is in the medium category.
Income and Efficiency Analysis of Maize Farming in Pringgabaya District East Lombok Regency Aeko Fria Utama FR; Dudi Septiadi; Muhammad Nursan
Jurnal Biologi Tropis Vol. 22 No. 1 (2022): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i1.3471

Abstract

East Lombok Regency is one of the maize development areas in NTB Province, however, maize productivity in that area is still relatively low due to the inefficient use of production inputs.The aims of this research are to; 1) analyze the income of corn farming in Pringgabaya District, East Lombok Regency; 2) analyze the factors that influence corn production in Pringgabaya District, East Lombok Regency; 3) analyze the level of economic efficiency in the use of production factors in corn farming in Pringgabaya District, East Lombok Regency. The research method used is descriptive method with a quantitative approach. The location of the research was carried out in Bagek Papan Village and Pringgabaya Village, Pringgabaya District, East Lombok Regency. Respondents in this study were farmers who cultivate corn in paddy fields as many as 30 respondent farmers. Data collection techniques used in this study are survey and interview techniques. Analysis of the data used in corn farming is farm income analysis, Cobb-Douglass production function analysis and efficiency analysis of production factors. The results showed that the income of farmers obtained from corn farming in Pringgabaya District, East Lombok Regency in 2021 was IDR 11,671,745 per arable area or IDR 15,559,705 per hectare. The factors that affect production that have a significant (significant) effect on production are land area at a significant level of 5% and NPK fertilizer at a significant level of 10%. Meanwhile, other variables, namely labor, seeds, urea, TSP and pesticides had no significant effect at the 5% and 10% levels. The production factors used in corn farming in Pringgabaya District, East Lombok Regency are not and have not been efficient to cultivate, this can be seen from the efficiency criteria that have not and none have achieved efficiency with a value of NPMx/Px = 1.
Analysis of Cadmium (Cd) Heavy Metal Content in Headsnake Fish (Channa striata) Derived from Rawa Taliwang Lake, West Sumbawa Regency 2021 Karina Legiarsi; Khairuddin Khairuddin; M. Yamin
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3509

Abstract

Fish is one of the aquatic organisms that is often used as a biological indicators of heavy metals in waters. The purpose of the research about analysis of cadmium (Cd) heavy metal content in headsnake fish (Channa striata) derived from Rawa Taliwang Lake, West Sumbawa Regency 2021 is to determine the cadmium in headsnake fish from Rawa Taliwang Lake. The research was conducted for 2 months, starting from September-October 2021. Sampling was carried out by purposive sampling at 2 research stations. Fish samples were taken 2 fishes at each station using gill nets and plaited rattan fish trap. The fish species taken were headsnake fish. The research sample was then analyzed in the West Nusa Tenggara Health, Testing and Calibration Laboratory. The data analysis was carried out by taking muscle tissue from headsnake fish and then analyzing the content of heavy metal in the from cadmium using AAS (Atomic Absorbtion Spectrophotometry). The measurement result showed that heavy metal content of cadmium in headsnake fish from Rawa Taliwang Lake ranged from 0,115 mg/kg (ppm) to 0,161 mg/kg (ppm). This shows that Rawa Taliwang Lake has been contaminated by cadmium exceeds the threshold set by Food and Drug Supervisory Agency (BPOM) No.5 of 2018 concerning the Maximum Limit of Heavy Metal Contamination in Processed Food which is 0,1 mg/kg.
Application of Dry Probiotic Rabal (Yeast and Lactic Acid Bacteria) to Prevent Mas (Motile Aeromonas Septicemia) Disease in Catfish (Clarias sp.) Lukman Anugrah Agung; Imas Rohmawati; Eltis Panca Ningsih
Jurnal Biologi Tropis Vol. 22 No. 1 (2022): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i1.3524

Abstract

Catfish is one of the important fish commodities in Indonesia. There is some problem that becomes trouble in catfish culture, and the most trouble which cause losses in catfish culture is a disease, especially motile aeromonads septicemia (MAS). The purpose of the study was to analyze the effectiveness of giving dry rabal probiotics for the prevention of motile Aeromonas septicemia (MAS) in catfish (Clarias sp.). This experiment consisted of four treatments, namely catfish farming with the addition of dry rabal probiotics with concentrations of 0%, 5%, 10% and 15%. Catfish (6.03±0.38 g) were reared in a rearing tank with a volume (41x50x57 cm) with a density of 15 fish/aquarium for 50 days. Probiotic bacteria were given daily through feed, while the pathogenic bacteria A. hydrophila was infected on day 51. The results showed that the treatment of giving dry rabal probiotics through feed was effective in improving the immune, and increasing the survival of African catfish. The 10% (C) rabal probiotic treatment gave the best results with the highest survival rate of 75.56 ± 3.85%.
Stingless Bee Beekeeping as a Coping Strategy of Poor Households to Cope with Impacts of Disasters in Lombok Island, Indonesia Baiq Yulfia Elsadewi Yanuartati; Rinda Desan; Syarifuddin Syarifuddin; Ni Made Wirastika Sari; Muhammad Nursan
Jurnal Biologi Tropis Vol. 22 No. 1 (2022): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i1.3531

Abstract

Communities in Lombok, especially North Lombok, have faced several disasters in recent years. The disasters include the Earthquake in 2018 and the Covid-19 pandemic that began in 2020, having a social and economic adverse impact. During these disasters, Trigona (stingless bee) was observed of being an income activity that was quickly recovered. This study looks at how Trigona helped beekeepers as a coping strategy after facing disasters. A qualitative study was conducted in North Lombok by conducting interviews using open questions with interview guidance. The interviews involved 35 beekeepers as participants and two key informants who were related to the activities of beekeepers in the society. The data was analyzed qualitatively and the findings were presented descriptively. This study found that Trigona was a household business that was able to help farmers coped with the impacts of disasters in North Lombok. The beekeeping could recover soon after the 2018 earthquakes, and was survived during pandemi because it was supported by five livelihood assets, which were available around them, easy to access, easy to use, and/or profitable. The assets included natural, human, social, physical, and financial assets for both beekeeping and livelihoods. Trigona beekeeping was also supported by institutions, both formal and informal.
The Effect of Seed Weight on Growth of Seaweeds Kappaphycus alvarezii in Integrated Marine Aquaculture of Ekas Bay, East Lombok Regency Lalu Sofyan Satria Jaya; Muhammad Junaidi; Nanda Diniarti
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3551

Abstract

Integrated marine aquaculture or known as Integrated Multi-Tropical Aquaculture (IMTA) is an alternative development in aquaculture activities under the concept of environmental conservation. There are several important aspects in supporting the success of seaweed cultivation including the use of the right weight of seeds at the beginning of cultivation activities. The purpose of this study was to analyze the effect of seedling weight on the growth of Kappaphycus Alvarezii seaweed cultivated in integrated cultivation areas and to determine the best use of seed weight. This study used a completely randomized design (CRD) consisting of 4 treatments and 3 replications to obtain 12 experimental units. The treatments used were the initial seedling weights of 50 g, 100 g, 150 g, and 200 g. The results showed that the effect of different seed weights on the integrated cultivation system with the longline method showed that the absolute average growth obtained ranged from 57.67 g to - 149.00 g while the average specific growth rate of seaweed ranged from 1.28%/day to - 3 ,31%/day and the best chlorophyll-a was found in the 50 g treatment with a value range of 0.628 mg/L to - 1.520 mg/L. It can be concluded that the use of seed weight gave a significantly different effect on the absolute growth and specific growth rate of Kappaphycus Alvarezii seaweed that was cultivated in an integrated manner and the use of the best seed weight with the best weight was 50 g.
The Diversity of Lichens in The Tourist Area of The Stokel Waterfall Central Lombok Suniyanti Suniyanti; Mahrus Mahrus; I Gde Mertha
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3586

Abstract

Lichen is a symbiosis of fungi and algae cause morphology and physiology are in one unit. It can be an indicator for environmental monitoring, especially as a bioindicator of air pollution, and therefore deserves more attention in the tropics. Data for the diversity and distribution of lichens in the Nusa Tenggara region is still very lacking. Benang Stokel Waterfall Tourism has high potential as a diversity center for exploration that needs attention, including the lichen community. This study aims to know and find the diversity of lichen species in the Benang Stokel Waterfall Tourism Area. Collecting data used two methods, i.e., the exploration method and the transect with 50 plots in size 2m x 2m along the transect line. The lichen diversity index analysis used the Shannon-Wiener Diversity Index, and the species Diversity Index (H') was 2,019 (intermediate category). The study found nine species of lichens: Cryptothecia, Cryptothecia Stirton, Lepraria Lepraria, Lepraria sp., Graphis Scripta, Grapes sp., Opegrapha ara, dan Chiodecton sp., were fully identified.  
Consumer Behavior of Middle-Income Class Towards The Utilization of Medicinal Plants During The Covid-19 Pandemic Dudi Septiadi; Pande Komang Suparyana; Sharfina Nabilah
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3618

Abstract

Since the outbreak of Covid-19 in Indonesia, medicinal plants have become viral and are in great demand by the public. The application of healthy living behavior by consuming medicinal plants is one of the efforts for the community to maintain health and increase immunity. The objectives of th is research are to; 1) explain the development and role of the middle-income class in the Indonesian economy; 2) analyze middle-class behavior related to the literacy level of middle-income class society; 3) analyze the behavior of the middle-income class in consuming medicinal plants as an effort to increase immunity. The research method used in this research is a descriptive qualitative approach. The number of samples used in the study is 90 respondents. Based on the research results, it shows that the growth of the middle-income class from 2012 to 2020 has increased by 64% to 68.2 million people. A large number of middle-class people in Indonesia have played a role in supporting the domestic economy in terms of consumption expenditure. Based on this research, the highest number were middle-class people with moderate levels of literacy, which is 44 percent. Middle-class people who have a high literacy rate are as much as 25 percent. Meanwhile, the middle-class people with low literacy levels are quite a lot, namely 31 percent. The interest of the middle class in consuming medicinal plants is relatively high. There were 32 middle-class respondents who had a high interest in consuming medicinal plants during the Covid-19 Pandemic.
Active Components of Komak Beak Bongkor (Lablab purpureus (L.) Sweet) Seeds Nur Indah Julisaniah; Baiq Aulia Dewi Agustin; Sukiman Sukiman; Kurniasih Sukenti
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3633

Abstract

Komak bean (Lablab purpureus (L.) Sweet) belongs to the family Fabaceae and subfamily Papilionidae. Komam bean is cultivated by people for consumption as an additional food source. Informationabout the active compound content of komak bean is needed as a reference in the utilization of komak. This research aims to determine the active compounds contained in komak seed (Lablab purpureus (L.) Sweet). This study used GC-MS analysis to determine the active components of the komak bean seed. Based on research result, komak Beak Bongkor bean contain 13 active components, they were toluenea, methyl octanoat, adacene 12, isododecane, caprylic acid, retardex, 1-undecene 7-methyl-, methyl caprate, capric acid, benzoic acid 4-ethyl-, palmitic aldehyde, methyl laurate dan lauric acid.
Characterization of phytochemical compounds (qualitative and quantitative) in the endophytic fungi the bark of the Duwet plant Titik Wijayanti; Anita Munawwaroh; Nuril Hidayati
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3651

Abstract

This study aims to characterize the phytochemical compounds in the endophytic fungi the bark of the Duwet (S. cumini L.). Duwet skin samples were taken from various regions in East Java, including Batu City, Malang Regency, Pasuruan Regency, Lamongan Regency, Gresik Regency, and Situbondo Regency. The method used in this research is an experiment, namely the isolation of endophytic fungi, qualitative and quantitative phytochemical content tests. The results showed that there were variations in the content of endophytic fungi in the duwet bark from one location to another. All samples of endophytic fungi isolate from Duwet stem bark contained flavonoid compounds, alkaloids, terpenoids, phenolics and tannins. Phytochemical compounds of endophytic fungi in the bark are the result of symbiosis between endophytic fungi and their host plants. Endophytic fungi live in intracellular tissue, then absorb nutrients from their host plants, and include phytochemical compounds found in the bark of the duwet plant.

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