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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 Effect of Fermentation Time on The Organoleptic Test of Kombucha Tea M. Ali Akbar; Khairunnisa Khairunnisa; Mardiah Mardiah; Ekariana S Pandia
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5096

Abstract

Kombucha is a fermented product of sweet tea solution which is added with kombucha starter and scoby. Kombucha culture is a combination of bacteria and yeast called SCOBY (Symbiotic Culture of Bacteria and Yeast). This activity aims to determine the effect of time on the organoleptic test in making kombucha tea. This study used quantitative methods and data collection techniques by conducting organoleptic tests on respondents, in this study using a completely randomized design (CRD). Organoleptic consisting of taste, aroma and color. The results showed that on average all respondents preferred kombucha tea on the 15th day of fermentation. The organoleptic test conducted on 30 respondents had a preference level with the highest percentage for each parameter consisting of 60% taste, 70% aroma and 70% color. Where the longer the fermentation time, the level of preference of the testers for the organoleptic response increases.
Growth Pattern, Sex Ratio and Distribution of Humpback Fish (Hemisilurus heterorhynchus, Bleeker 1854) in the Flooded River Basin, Kampar Kiri, Riau Province Roza Elvyra; Febrian Lailatul Fitri; Yusfiati Yusfiati; Khairijon Khairijon; Imelda Wardani
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5176

Abstract

Flood plain river is one of the characteristics of Riau Province. The difference between H. heterorhynchus fish and other species is its distinctive mouth and bent body. H. heterorhynchus is a fish with high economic value. These fish are often overfished, which can lead to a decline in the fish population in the future. Therefore, this research was carried out to be able to see the growth pattern, sex ratio and distribution of fish so that it can become the basis for information, cultivation and preservation of H. heterorhynchus. The number caught was 78 (56.67%) male fish and 36 (43.33%) female fish. The total body length of male fish is 19-41 and female fish is 19-50 cm, the total body weight of male fish is 40-310 g and female fish is 40-600 g. The allometric growth pattern of male and female fish was negative, with b values ​​of 2.8 (males) and 2.2 (females). Correlation analysis of H. heterorhynchus fish are r= 0.98 (male) and r=0.877 (female). The sex ratio of male and female fish is 1.16:1. Male fish are 19-22 cm and 23-26 cm (small fish), 27-30 cm and 31-34 cm (medium fish), and 35-38 cm and 39-42 cm (large fish). Female fish are 19-24 cm and 25-30 cm (small fish, 31-36 cm and 37-42 cm (medium fish), 43-48 cm and 49-54 cm (large fish).
Identification of Rare Medical Plant and Community Understanding in Manggeh Village, Karanganyar District, Karanganyar Regency Farhah Qurrotu 'Aini; Nur Rokhimah Hanik; Tri Wiharti
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5179

Abstract

This study aims to identify rare medicinal plants in Manggeh Village, Karanganyar District, Karanganyar Regency, as well as to understand the level of knowledge and understanding of the community regarding rare medicinal plants in areas with a low tendency. The research method used was field surveys, interviews, and direct observation of 40 respondents who were randomly selected from people in low inclined areas. The results showed that there were a number of rare medicinal plants in Manggeh Village. These plants have high medicinal potential and have been used traditionally by the local community. However, the level of public knowledge and understanding regarding rare medicinal plants is still limited. Although some people are familiar with rare medicinal plants in general, in-depth knowledge about their benefits, uses and potential side effects is still limited. This research provides a deeper understanding of the biodiversity in Manggeh Village and provides useful information for the community in the proper and responsible use of medicinal plants. The results of this study can also be a basis for local governments in developing policies for the conservation of rare medicinal plants.
Utilization of Cassava into Mocaf Flour as A Processed Product by The Sumber Makmur Women Farmer Group in Tepisari Village Umi Salamah; Nur Rokhimah Hanik; Ratna Dewi Eskundari
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5191

Abstract

Cassava (Manihot esculenta crantz) is a type of tuber which has a carbohydrate content of 34% and can be processed as an alternative staple. One of which is mocaf flour (Modified Cassava Flour) which is flour derived from cassava and modified by lactic acid bacteria fermentation. Mocaf flour can be used to make bread, noodles and cakes. One of the efforts to utilize cassava into mocaf flour into processed products has been carried out by the Sumber Makmur Women Farmers Group (KWT). The purpose of this research is to improve the skills of KWT Sumber Makmur members of Tepisari Village in producing mocaf flour independently so they can create processed food products from mocaf flour that are of higher quality and variety. This research method uses a descriptive qualitative approach with the results obtained from making Mocaf Cookies which will be discussed and observed, namely swelling power, taste, aroma and texture. The results obtained from the process of making mocaf flour with tape yeast can produce good quality mocaf flour and processing mocaf cookies has produced cookies with sufficient expansion power, savory taste, distinctive aroma and crunchy texture. The use of cassava into mocaf flour at KWT Sumber Makmur, it is able to provide increased insight into the process of making mocaf flour. As well as the development of KWT mocaf cookies processed products that have high selling value.
Food Habits of Snakehead, Channa Striata (Bloch), in Aquatic Habitats: a Review Literature Rizha Bery Putriani; Nidya Kartini; Septi Malidda Eka Putri
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5193

Abstract

Snakehead fish as a fish of high economic value is currently still caught through nature where cork maintenance has not been widely done. Snakehead fish contains high protein, good for health can also for recover damaged. This investigation intends to produce findings from earlier research into the feeding patterns of snakehead fish (Channa striata) in aquatic environments. Because it can serve as a resource for the public and other parties in terms of ecological and biological studies as well as serve as a guide for activities involving the farming of snakehead fish, this study literature is fascinating to address the feeding habits of snakehead fish (Channa striata). Fish fries are the principal diet for carnivorous snakehead fish. when zooplankton or other tiny crustaceans are more commonly consumed by snakehead fish larvae. This disparity in eating patterns is determined by things including fish kind, age, food availability, environment, and fish size. Due to the lack of food, the effects of the season, and the time spent searching for food, snakehead fish are found to have an empty stomach in both their larval and adult stages.
The Effect of Vegetable Waste Compost on The Growth of Robusta Coffee Seeds (Coffea canephora) Mulyanti Mulyanti; Lukman Martunis; Ade Zahara
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5195

Abstract

Vegetable compost is an organic fertilizer derived from vegetable waste which can be used as a source of nutrients for plants.  This study aims to determine the effect of vegetable waste compost on the growth of robusta coffee seedlings. This study used a non-factorial completely randomized design with 6 treatments and 4 replications to obtain 24 experimental units. The treatment given was a dose of vegetable waste compost consisting of 6 levels, namely: K0 = without adding vegetable waste compost K1 = 100 gram dose of vegetable waste compost, K2 = 200 gram dose of vegetable waste compost, K3 = 300 gram dose of vegetable waste compost, K4 = 400 gram dose of vegetable waste compost, K5 = 500 gram dose of vegetable waste compost. The results showed that the application of vegetable waste compost with different doses had a very significant effect on the parameters of seedling height, number of leaves and stem diameter of robusta coffee plant seedlings. The best treatment was obtained in the K5 treatment, namely 50 grams/plant of vegetable waste compost.
Production of Shallots (Allium ascalonicum L. var. bauji) with The Provision of Liquid Organic Fertilizer Mixed Pineaplle Peel Waste (Ananas comosus L.) and Water Hyacinth (Eichornia crassipes L.) Ruth Isabella Elisabeth Sari Mutiara Sianturi; Mukarlina Mukarlina; Zulfa Zakiah
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5211

Abstract

Red onion is a rural commodity developed by people in West Kalimantan. The development of shallots in West Kalimantan is mostly completed in the formation of media in the form of peat soil with physical and substantive qualities that are unfit for the production of shallots. The application of Liquid Organic Fertilizer (LOF) is one method used to overcome the limitations of shallot cultivation on peatlands. The aim of the study was to determine the production of shallots of the Bauji variety influenced by a mixture of liquid organic fertilizer containing waste pineapple skin and water hyacinth. The study used an experimental method with a completely randomized design (CRD) and there were seven treatment standards for liquid organic fertilizer. The results of the study found that liquid organic fertilizer mixed with water hyacinth waste and pineapple peel had an effect on tuber wet weight, tuber dry weight, tuber number and tuber diameter. The best concentration is on. LOF treatment of 50 ml/L to increase the production of shallots of the bauji variety planted on peatlands in West Kalimantan. This treatment resulted in the highest tuber wet weight value of 55.07 grams and tuber dry weight of 15.22 grams, the number of tubers was 8 pieces and the tuber diameter was 2.44 cm.
Utilization of Plants in Pangari Activities by The Dayak Ribun Tribe Community in Suka Gerundi Village, Parindu District Sanggau Regency Muhammad Yuda Putratama; Rafdinal; Dwi Gusmalawati
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5227

Abstract

Pangari activity is a mutual cooperation activity in farming carried out by the Dayak people in West Kalimantan. However, there is no scientific information that examines the use of plants in pangari activities by the Dayak Ribun people in Suka Gerundi Village, Parindu District, Sanggau Regency. Therefore, this research was carried out with the aim of finding out how the pangari activities were carried out by the Dayak Ribun people, identifying the types of plants, the proportions of plant organ parts, and the benefits of the forms of the types and plant organs used. This research was conducted for 6 months, from March to September 2022. The method used in this study was the snowball sampling method with 15 respondents. The results showed that the pangari activities carried out took place at the time of planting and harvesting rice. 58 species from 32 plant families were used. The highest Citation Frequency value is rice (Oryza sativa L.) at 100%. The most commonly found plant families are Arecaceae, Moraceae, Poaceae, and Zingiberaceae. The percentage of plant parts that are widely used are leaves (31%). Forms of utilization of plants, namely, as building materials, crafts, medicines and food. The highest Informant Agreement Ratio (IAR) value is a form of utilization as food with a value of 0.8156.
The DNA Barcode of cytb on Selais Bungkuk Fish (Hemisilurus heterorhynchus Bleeker) Originating from Riau, Indonesia Roza Elvyra
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5233

Abstract

Selais bungkuk (Hemisilurus heterorhynchus Bleeker) is one of catfishes which is a member of family Siluridae and order Siluriformes. Selais bungkuk is an endemic fish in Riau Province. The scientific study of this fish is still limited including DNA barcoding study. This research aims to analyze the DNA barcode of cytochrome b (cytb) on selais bungkuk. Methods included colleting the fishes from Kampar River (three individuals) and Tapung River (three individuals); total DNA extraction from the muscle; electrophoresis, PCR, sequencing; and bioinformatics analysis. In this study, cytb DNA sequences were obtained from the six individual fishes studied with a size of 339 bp. The six sequences have been registered at GenBank with registration numbers MH633750, MH633751, MH633752 from Kampar River, MH633753, MH633754, and MH633755 from Tapung River. The BLASTn analysis showed that the selais bungkuk fish had the highest similarity of 92.63% with H. mekongensis and the lowest (90.00%) with selais janggut (Kryptopterus limpok). There were three nucleotides that characterize the selais bungkuk fish based on the cytb sequence such as nucleotide number 205, 229, and 280. The cytb sequence can distinguish groups of catfish separately based on their species. Conclusions and recommendations, the cytb sequences obtained in this study are the first to be reported in selais bungkuk fish and can be used as a reference for identifying this species.
Community Structure of Phytoplankton in The Bongkok River of Kubu Raya Regency, West Kalimantan Armawati Armawati; Entin Daningsih; Wolly Candramila
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5238

Abstract

Located around the Mangrove Production and Protection Forest in Tanjung Harapan Village, Kubu Raya Regency, the Bongkok River quality needs to be studied to determine the quality of the river. This study aims to determine the physicochemical quality of water and the community structure of phytoplankton in the Bongkok River during the dry and rainy seasons. The survey method was used at three stations and 9 observation points in both seasons. Phytoplankton types are identified up to the species level. The physicochemical factors observed included temperature, transparency, water flow, pH, salinity, dissolved oxygen, dissolved carbon dioxide, and levels of nitrate and phosphate. The community structure is seen from the abundance, diversity, uniformity, and dominance index values. From a physicochemical perspective, the Bongkok River is a brackish water type with relatively low levels of phosphate and nitrate nutrients and high dissolved CO2, but dissolved oxygen is still good enough to support aquatic life. There are 41 phytoplankton species from 6 classes, including Bacillariophyceae, Chlorophyceae, Cyanophyceae, Dinophyceae, Euglenaphyceae, and Xanthophyceae. The phytoplankton abundance in the dry season is higher than in the rainy season but is still at a low to moderate level. The phytoplankton diversity in the Bongkok River is in the medium category (2.46 – 2.67) but has a high evenness (0.72-0.89) and low dominance (0.11-0.18). Overall, the water conditions in the Bongkok River are sufficient to support the life of aquatic biota. However, the abundance of phytoplankton is still at a low to moderate level, especially during the rainy season.

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