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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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Heavy metal content of Pb and Cd in bandik grouper (Cephalopholis boenak) in Banten Bay, Indonesia Endang Juniardi; Sulistiono Sulistiono; Sigid Hariyadi; Mohammad Mukhlis Kamal
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2830

Abstract

Banten Bay is a developing area that is used by various activities such as fishing ports, industry and hotels. Many activities in the coastal areas of Serang City and Cilegon Regency have a serious impact on the quality of waters and fishery resources along Banten Bay. This study aims to analyze and determine maximum tolerance limit for bandik grouper (C. boenak) meat and gills which are safe for consumption by adults and children. The study was conducted at six stations, namely Panjang Island and Pamujaan Besar Island during the period of May, June and July 2019. Measurement of heavy metal content on meat and gills carried out using Atomic Absorption Spectrophotometric (AAS). The content of Pb and Cd in water fluctuates. The metal content of Pb and Cd in the meat and gills of bandik grouper has exceeded the quality standards set by BPOM and FAO/WHO, and is classified as polluted mild to moderate Pb bioconcentration factor values in grouper meat ranged from 6.78-72.00 and Pb bioconcentration in grouper gills 32.86-762.61. The maximum weight of grouper meat that can be tolerated for consumption for adults is 3,5 kg/week and children 1.0 kg/week.
Metabolite Activity of Endophy Fungi Isolated from Betle Leaf (Piper betle) Against Candida Albicans Aini Aini; Edi Kurniawan; Sumiatun Sumiatun
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.v22i1.3246

Abstract

Betle (Piper betle) is a type of plant producing antimicrobial substances and secondary metabolites that are potentially used for the production of new drugs. Candidiasis is a disease caused by Candida albicans and causes diseases of the mucosa of the mouth, digestive tract, and vagina. The study aimed to isolate the betle leaf endophyte fungus (Piper betle L.) and find out the activity of its metabolites against Candida albicans. The research was conducted at the Laboratory of Plant Physiology and Biotechnology, Faculty of Agriculture, University of Mataram. The research method used was descriptive observation. The purpose of this study was to isolate endophytic fungi and their activity against Candida albicans from beetle leaves. The yield of endophytic fungal secondary metabolites was obtained by fermentation method, and the activity of Candida albicans was detected by diffusion method. Isolation test obtained from R&D hospital NTB Province. The research results obtained the endophytic fungi isolated from beetle leaves (Piper betle L.) and obtained the identification results of the fungus Cephalosporium.
Effect of Organic Fertilizer on Growth and Productivity of Ipomoea reptans Poir Klementinus Bhato; Yohanes Bare; Oktavius Yoseph Tuta Mago
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.v22i1.3232

Abstract

Kangkung Darat (Ipomoea reptans Poir) is the vegetable that is popular and consumed by the community. Chemical fertilizers bring negative impacts on soil and consumer health, lead to change thewith liquid organic fertilizer from cattle dung and tofu industrial waste with floating raft hydroponic planting techniques. The purpose of this study was to analyze the effect of liquid organic fertilizer on the growth and productivity of Ipomoea reptans Poir. The research was conducted on the campus of the University of Nusa Nipa Indonesia. The research method, quantitative data collection using a Randomized Block Design (RAK) consisting of 5 treatments, namely P0 = 0% (control), P1 = 20%, P2 = 40%, P3 = 60%, P4 = 80%. Parameters observed were plant height, number of leaves and wet weight. The data obtained were analyzed using SPSS version 16.0 with an advanced test, namely the DMRT (Duncan's Mutiple Range Test) test. The results showed that the application of liquid organic fertilizer from cow dung and tofu industrial waste had a significant effect on the growth and productivity of Ipomoea reptans Poir. The effects include the growth of plant height and number of leaves as well as the yield of Ipomoea reptans Poir including wet weight (fresh) with the best concentration of P2 treatment with 40% POC concentration This research provides benefits for the community, especially the potential as farmers to further motivate the use of liquid organic fertilizer made from cow dung and tofu waste to increase crop income and soil fertility.
Preliminary Study: Habitat Characteristics of Amorphophallus spp. to Support Cultivation Development in East Lombok Janwar Wahyu; Arben Virgota; Sukiman Sukiman; Baiq Farista; Suripto Suripto
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.v22i1.3102

Abstract

One type of the Amorphophallus genus that has high economic value is Amorphophallus Muelleri, which is known as the local name Porang. Porang tubers are used to obtain glucomannan which is widely used in the drug industry. Currently, many porang tubers come from the forest and have not been widely cultivated. In Lombok island of, several species of Amorphophallus spp are found. Therefore, a preliminary study of the habitat information of Amorphophallus spp. in East Lombok is urgently needed, especially in the Kokok Tojang sub-watershed. This study aims to determine the habitat of Amorphophallus spp based on actual and potential existence data. The method used in this study is a purposive sampling method, namely by looking for actual and potential locations where Amorphophallus spp.  In this study, two types of Amorphophallus were found, namely A. paeoniifollius and A muelleri. Habitat characteristics of Amorphophallus spp described by soil and microclimate parameters. Soil parameters include soil moisture (15-70% and an average of 28.5%); Soil temperature (24-29 oC), soil fertility (ideal) soil texture (clay clay, sandy loam, and dusty clay), conductivity (0.07 – 0.52 mS/cm). Microclimate parameters measured include temperature (19.4 – 30.3oC), humidity (64.4% – 81.4%), light intensity (60.3 – 22526.8 lux).
Technical Efficiency of Lobster (Panulirus sp) Farming in East Lombok Regency Muhammad Nursan; Syarif Husni; M. Yusuf; Aeko Fria Utama FR; Ni Made Nike Zeamita Widiyanti
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.3090

Abstract

East Lombok Regency is one of the centers for the development of aquaculture and the largest lobster seed producer in Indonesia. However, in terms of productivity, lobster cultivation is still relatively low due to the less optimal use of production factors and management in carrying out lobster rearing cultivation. The purpose of this study was to analyze the factors that affect the production of lobster rearing aquaculture and to analyze the level of technical efficiency and the factors that influence the technical inefficiency of lobster rearing aquaculture in East Lombok Regency. Descriptive research method was selected in this research. Cross section data was collected using a survey technique on 40 respondents who were selected by simple random sampling. The collected data was then analyzed using the Cobb-Douglas Stochastic Frontier production function with the Maximum Likelihood Estimator (MLE) method. The results showed that the production of lobster rearing aquaculture in East Lombok Regency was significantly influenced at the alpha level 5% by the variables of the number of cages, feed, number of family dependents and dummy species. The level of technical efficiency of lobster rearing cultivation is classified as efficient with a technical efficiency value of 0.94. Then the factors that affect the inefficiency of lobster rearing business in East Lombok Regency include age, education level and training dummy.
Analysis of Cd and Cu Heavy Metal Content in Climbing perch (Anabas testudineus) Derived from Rawa Taliwang Lake, West Sumbawa Regency Khairuddin Khairuddin; M. Yamin; Kusmiyati Kusmiyati
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.v22i1.3105

Abstract

Many species of fish in Rawa Taliwang Lake can be used as bioindicators. Climbing perch (Anabas testudineus) is a species of freshwater fish that is used as a bioindicator. The aims of this study were: Want to know the heavy metal content of Copper (Cu) and Cadmium (Cd) in Climbing perch from Rawa Taliwang Lake to enrich the Environmental Knowledge course material. A special benefit is to protect consumers who consume fish from heavy metal contaminants. The research was conducted in Rawa Taliwang Lake, which is an area that is submerged in water. Methods Data collection was carried out by determining 2 research stations, namely in the east and west of the lake. Next, fishing is done using gill nets. Fish samples were taken from 3 to 4 fish at each station. The fish species taken were Climbing perch (Anabas testudineus). Then each fish sample was put into a plastic bag and then stored in a sample box. The research sample was then analyzed in the West Nusa Tenggara Health, Testing and Calibration laboratory. The data analysis method was carried out by taking muscle tissue from Climbing perch and then analyzing the content of heavy metals in the form of Copper (Cu), and Cadmium (Cd) using an Atomic Absorption Spectrophotometer. Measurement of heavy metals in fish tissue was carried out by adding concentrated HNO3 and HClO4, heated at a temperature of 60-70ºC for 2-3 hours until the solution was clear. Ready samples were measured by AAS using an air-acetylene flame. The measurement results show the presence of heavy metals Copper (Cu) and Cadmium (Cd) in the fish tissue studied. The conclusion of this study is that the heavy metal content in Climbing perch  (Anabas testudineus) originating from Rawa Taliwang Lake to enrich the Environmental knowledge course material is; Copper (Cu) ranged from 0.067 ppm to 0.126 ppm, and Cadmium (Cd) ranged from 0.011 ppm to 0.016 ppm.
Anti Fungi Potential of Psidium cattleianum afzel ex Sabin extraction as an inhibitor of fungi Fusarium solani Lina Febriantini; Khotibul Umam; Putu Agus Hendra Wibawa; Wawan Sujarwo
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.v22i1.3167

Abstract

The use of fungicides plays an important role in controlling plant diseases caused by Fusarium. However, the development of environment friendly fungicides is considered more effective, which used the plant secondary metabolites. This study aims to find the latest alternative fungicides using Psidium Cattleianum Afzel plant extract, ex Sabine from the collection of the "Eka Karya" LIPI-Bali Botanical Garden, which can inhibit the growth of F. solani and to find the minimum dose of the plant extract in inhibiting growth of F. solani. The method used was early screening of plant and fungi, medium preparation for fusarium and minimum dose analyze. This study found that based on 19 plants tested, Psidium cattleianum proved effective in inhibiting the F. solani.  Further testing of psidium plants was carried out by looking at the minimum dose of inhibition against fusarium. The inhibition zone contained in the 1% treatment was greater than the concentrations of 0.75%, 0.50% and 0.25%. The research was continued at a concentration reduction of 0.20-0.005% with the results showing that a concentration of 0.20% to a concentration of 0.05% resulted in a moderate inhibition zone of 8 mm to 9.2 mm. Therefore, it can be concluded that the concentration of 1% is the concentration with the minimum dose of Psidium cattleianum in inhibiting the growth of the fungus Fusarium solani.
Utilization of Home Yard for Lettuce Cultivation with a Hydroponic Ungki Marnando; Widayanti Widayanti; Septilia Septilia; Uswatun Hasanah; Arini Rosa Sinensis
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.v22i1.3196

Abstract

The development of technology is currently very rapid, especially technological developments in the agricultural sector. However, some farmers do not use the land as an agricultural business. The purpose of the study was to provide a strategy for using yard land as hydroponic lettuce cultivation. This research method is a survey. The research instrument used an open questionnaire, interviews and analyzed descriptively qualitatively. The results showed that vegetable cultivation can be done hydroponically. Vegetables grown hydroponically in this study were lettuce. Planting using a hydroponic system is an environmentally friendly plant process because its cultivation does not require excessive pesticides. In addition, it can take advantage of a narrow land as a planting medium. Further research needs to analyze the types of hydroponic plants that are suitable for each surrounding area
Application of Dry Probiotic Rabal to Increase Growth Performance of Catfish (Clarias sp.) Lukman Anugrah Agung; Imas Rohmawati
Jurnal Biologi Tropis Vol. 21 No. 3 (2021): September - Desember
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.v21i3.2958

Abstract

Catfish have become an important contributor to fish production in Indonesia. Catfish consumption in Indonesia always increases every year. To meet the demand for catfish consumption, it was carried out with an intensive aquaculture system. However, the high cost of feed has been identified as a significant constraint in catfish farming. Efforts to increase catfish growth are needed to reduce feed costs, one of the efforts is by probiotic supplementation through the feed. This study was carried out to determine the best dose of probiotic rabal dried addition to increasing catfish growth. The experiment used four treatments and three replications. Probiotic rabal dried doses: 0% of feed (A)/feed (control), 5% of feed (B), 10% of feed (C), and (D) 15% of were used as treatment. The feed was given ad-satiation with a frequency of feeding three times a day. Observations were made for 45 days. The results indicated that the B treatment of 5% of feed gave the best absolute weight growth and feed conversion ratio. While catfish fish survival rate was not significantly different on all treatments.
Utilization of plants as food source from Sebaju village forest, Nanga Kebebu village, Nanga Pinoh District, Melawi Regency Farah Diba; Muhammad Sholihin; Nurhaida Nurhaida
Jurnal Biologi Tropis Vol. 21 No. 1 (2021): Januari - April
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.v21i1.2317

Abstract

Forests has a role in supporting food security programs. Sebaju Village Forest, Nanga Kebebu Village, Nanga Pinoh District, Melawi Regency is a village forest area that has the potential of non-timber forest product, one of which is that there are many plants that can be used as food for daily living needs. The research objective was to explore local knowledge of the community and to make an inventory of the types of plants used as food by the communities around the Sebaju village forest, Nanga Kebebu village, Melawi regency, as well ass to describe how to uses and process plants that are used as food by the community. The research method was purposive sampling and data collection was carried out by in-depth interviews with the community in Nanga Kebebu village. The data were analyzed descriptive qualitative in order to obtain a systematic and accurate picture. The results found 58 plant species consisting of 31 families, these plants were dominated by the Anacardiaceae family (8 species). Arecaceae and Moraceae (5 species), Sapindaceae, Phyllanthaceae, Myrtaceae, and Fabaceae (3 species), while one other family each has 1-2 species. The most dominant plant habitats were trees with 40 species (68.96%), 8 types of herbs (13.79%), 4 types of shrubs (6.89%) and the least were lianas and 3 types of shrubs. (5.17%). The part of the plant that was used the most was the fruit, namely 44 species (75.38%), 8 types of leaves (13.79%), while the parts of the plant that were least used were 2 types of tubers (3.45%), 2 types tubers (3.45%), 1 flower (1.72%), 1 seed (1.72%). The largest group of foodstuffs is fruit as much as 40 types (67%), 12 types of vegetables (20%), while the lowest is 3 types of drinks (5%), 3 types of spices (5%), and 2 tubers type (3%). The most widely used food crop processing method is directly used 33 types (56.90%), 10 types of boiled (17.24%), 6 types of sauteed (10.34%) and 5 types of chili sauce (8.62%), Meanwhile, the least used processing methods were 2 types of frying (3.45%) and 2 types of drying (3.45%). Based on their growth status, the highest growth was in the wild, consist of 34 species (59%), and the lowest was cultivated by 24 species (41%) that grew in the Sebaju customary forest area, Nanga Kebebu Village, Nanga Pinoh District, Melawi Regency. Sebaju village forest has high biodiversity as food plant and local knowledge of te community in the use of plants in the forest area makes conservation efforst better because the community strives to be able to make a sustainable management of food from forest. 

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