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Kota mataram,
Nusa tenggara barat
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 51 Documents
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Search results for , issue "Vol. 22 No. 3 (2022): July - September" : 51 Documents clear
Anti-Ovipositor Power of Jayanti Plant (Sesbania sesban) for Integrated Control of Cabbage Pest (Plutella xylostella) Suripto Suripto; Hilman Ahyadi; Rachmawati Noviana Rehayu
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4120

Abstract

Cabbage harvest failure is often caused by failure to control cabbage pests. Cabbage pest control by eradicating Plutella xylostella larvae is considered less effective because the cabbage plant has been damaged due to infection with P. xylostella eggs and larvae. Thus, the control target needs to be shifted to prevent P. xylostella amago from laying eggs (ova-positioning) on cabbage plants. This study aims to determine the anti-ovipositor power of Sesbania sesban leaf extract against P. xylostella. The leaves of S. sesban were air-dried and then ground. The dry powder (simplicia) of S. sesban leaves was extracted with water as the sole solvent. The water-extract of S. sesban leaves was tested for anti-ovipositor against P. xylostella in situ on cabbage plants according to a completely randomized block design. Experimental groups were made according to variations in extract concentration. Complete randomization was carried out on experimental units in each group according to the variation in the length of exposure to the extract before access to the ovipositor was opened (Cages were opened after 1,2,3,4,5 and 6 days from the time of extract spraying). Each experimental unit consisted of 4 cabbage plants as replicates. The treatment was given by spraying a solution of S. sesban leaf extract with a concentration according to the group evenly on the entire leaf surface of each cabbage plant. The observed research variable was the number of P. xylostella eggs per cabbage plant after the cage of cabbage plant unit was opened. The results showed that the leaf extract of S. sesban could inhibit P. xylostella as an ovipositor to lay its eggs on cabbage plants effectively for up to three days. With concentrations of 1.83 to 2.14 ppm, the aqueous extract of S. sesban leaves did not inhibit P. xylostella egg laying, but with concentrations of 478.63 to 1283.88 ppm it could inhibit 50 to 100%.
Study of Morphological and Morphometric Characteristics of Worker Bees Tetragonula clypearis in North Lombok Regency, West Nusa Tenggara Province, Indonesia Erwan Erwan; Munaris Munaris; Muhammad Muhsinin
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4132

Abstract

This study aimed to describe the morphometric characteristics of the worker bee Tetragonula clypearis in Salut Village, District Kayangan, North Lombok Regency. The research material used was worker bee Tetragonula clypearis taken from 40 stup in two livestock groups, namely 20 stup in the Harapan Keluarga group and 20 stup in the Tunas Muda group in Salut Village, Kayangan District, North Lombok Regency. Each stup took three samples of worker bees for morphometric analysis (n=120). Morphological characters were observed under a stereo microscope connected to an Optilab camera. The character of T. clypearis is the thorax is black and hairy, and there are six hair bands on the mesoscutum and dark brown tibia. Metasoma has a variety of colours, ranging from pale yellow with black stripes, yellow and black, and pale yellow. The morphometric measurements included body length, head width, wing length, genna width, second flagellomere diameter, and body weight. The results showed that the seven morphometric measurement variables of the worker bee Tetragonula clypearis did not show significant differences (P>0.05) in the two cultivation groups. The value of the diversity coefficient <15% indicates that the morphometrics of the worker bee Tetragonula clypearis is uniform in both cultivation groups in Salut Village, District, Kayangan, North Lombok Regency.
Diversity of Soil Fauna in the Sesaot Nature Tourism Forest, West Lombok Mohammad Liwa Ilhamdi; Agil Al Idrus; Muhamad Syazali
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4142

Abstract

The Sesaot Nature Tourism Forest Area is a tourist area and an area that is used for the production of several plantation commodities, along with increasing human activities in the Sesaot Nature Tourism Forest area, it raises questions related to the state of its ecosystem, one aspect that reflects the state of the ecosystem, namely the diversity of soil fauna. The sample locations are divided into three paths based on the characteristics of the ecosystem, namely the waterway which is niche points located along the river flow, the middle lane in the form of a path around a forest area filled with large tree stands, and the edge lane which is a path located in the middle of the river around residential areas and rice fields. The purpose of this study was to determine the index of diversity, evenness of species, and species richness of soil fauna in the Sesaot Nature Tourism Forest. Sampling of soil fauna using the pitt fall trap method is placed along 3 predetermined paths. The results showed that in the Sesaot Nature Tourism Forest, there were at least 30 types of soil fauna dominated by the Formicidae family. The highest soil fauna diversity index was found in the waterway with 2.24, followed by the edge lane at 2.22, and the middle lane at 1.13. The evenness value of soil surface fauna species in the Sesaot Nature Tourism Forest in the waterway is 0.66, followed by 0.65 in the edge lane, and 0.33 in the waterway. The highest value of species richness (Margalef index) was found in the waterway with 3.26, followed by the edge and middle lane with 2.69.
Exploration in utilization of Lablab purpureus (L.) Sweet in Central Lombok Regency as a support in food security based on local germplasm management and conservation Kurniasih Sukenti; Nur Indah Julisaniah; Sukiman Sukiman; Rina Kurnianingsih
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4145

Abstract

Komak (generally assumed and known as Lablab purpureus (L.) Sweet) is one of the important food commodities in Fabaceae family, especially for people on Lombok Island, West Nusa Tenggara. Komak bean is also one of the common plants which is widely grown on Lombok Island in general. The objects of this research are to explore the various uses on some morphological variants of komak plant in Central Lombok Regency as one of komak production area on Lombok Island, including its potency of development strategies. This descriptive exploratory research was conducted in Central Lombok Regency as one of the important areas for komak population, supported by interviews, participatory observation and documentation. Snowball sampling method was applied in informant selection. Data were analyzed based on the calculation of Reported Use (RU) and Index of Cultural Significance (ICS). As the results, there are about 10 (ten) utilizations of komak plant reported by the community: as food, yard plants, land boundaries, economic plants, natural fertilizers, ecological functions (soil cover/erosion prevention), animal feed, seasonal indicators, ritual, and socio-cultural functions. Dissemination of information about processing technology and utilization of komak plant are still needed in order to support the optimalization of the management and utilization of this commodity as one of potential legumes that has a strategic role in realizing national food security.
Pre-Weaning Growth Performance of Boerka (Boer >< Kacang) Crossbred Kids in the Difference Genotype and Birth Types Lalu Wira Pribadi; Rr. Agustien Suhardiani; Tahyah Hidjaz; M. Ashari; Happy Poerwoto; Rina Andriati; Lalu Ahmad Zaenuri
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4146

Abstract

Breeding programs to promote the productivity of Indonesian local goats (i.e. Kacang Goats) in various regions have been carried out by cross-breeding with predominant breeds of meat goats in the world such as Boer Goats. Currently, considering that the various genotypes of the cross-bred goat (namely Boerka Goat) have been spread and farmed by various goat farms throughout the country, it is necessary to evaluate the increase in productivity achieved. This study aims to investigate the pre-weaning growth performance of Boerka (Boer x Kacang) Crossbred Kids at different genotypes and birth types. The study was carried out experimentally using 167 Boer x Kacang crossbred kids which was arranged in a Split-Plot Design covering 3 plots of kid genotype, namely: BK (50% Boer, 50% Kacang), BBK (75% Boer, 25% Kacang) , and KBK (25% Boer, 75% Kacang), each with 3 sub-plots of kid birth types, namely single born kid (CT), twin born kid (CK-2), and triplet born kid (CK-3), all including male and female kids. The response variable that measured on pre-weaning growth performance, was observed directly by measuring birth weight (BL), 90-day-old weaning weight (BS90), and daily body weight gain (PBBH) for pre-weaning period. The data is tabulated and analyzed using software “Genstat”. The results showed that BL, BS.90, and pre-weaning PBBH of Boer x Kacang crossbred kids were influenced by genotype (P<0.01) and birth type (P<0.05) of the kids, and differed (P<0.05) between males and females kid. Male kids showed BL, BS90, and Pre-Weaning PBBH 12.88, 9.20, and 9.24% higher than female kids, respectively. Based on the genotype and birth type of the kids, the highest pre-weaning growth performance was shown by single-born male BBK kids, with BL, BS.90 and Pre-Weaning PBBH 3.32±0.33, 13.06±3.46 and 0.114±0.020 kg, respectively.
Antibacterial Screenings of Chromolaena odorata L. and its potential against Staphyloccocus aureus, Bacillus subtilis, Staphyloccocus typhimurium, and Escherhicia coli in Sumbawa Ainurrohmah Aulia; Khotibul Umam
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4220

Abstract

Kirinyuh plant extract is one of potential antibacterial sources. Metabolite extract of kirinyuh leaf extract, which contains tannins, flavonoids, saponins, and alkaloids, is known to have antibacterial activities. In order to demonstrate the effectiveness of kirinyuh leaf extract against the bacteria Staphyloccocus aureus (SA), Baciluss subtilis (BS), Staphylococus typhimurium (BT), and Escherhicia coli (EC), this study sought to identify the prosite of bioactive compounds as well as an antibacterial. The method used was leaf extraction and several doses level treatments of 0 (control), 1, 2, 4, 3, and 5 (concentrations of 20%, 40%, 60%, 80%, and 100%, respectively). This research findings showed that kirinyuh leaf extract has modest antibacterial activity against SA, BS, and ST, but that it has considerable inhibitory effect against EC. Together, this study demonstrated the potential of Kirinyuh as a antimicrobial to specific microbial since it has widely used in our society.
Isolation, Identification and Antibacterial Testing, Indigenous Bacteria from Apis Mellifera's Honeycomb North Sumatra Origin Esibrena Br Kemit; Yermia S. Mokosuli; Helen J Lawalata
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4343

Abstract

Honeycomb can be used as a source of antibacterial, this is due to the content of secondary metabolites in the form of flavonoids in the honeycomb which serves as a protective determinant of honey quality. This study aims to isolate, identify and test antibacterial isolates of Indigenous bacteria from Apis mellifera nests against gram-positive bacteria S. aureus and gram-negative bacteria E. coli. This research used descriptive method and the research data were obtained through laboratory experiments. The results of the isolation stage of indigenous bacteria obtained seven (7) isolates AM1, AM2, AM3, AM4, AM5, AM6, AM7 Indigenous bacteria from Apis mellifera bee hives. AM1 and AM4 isolates were similar to the Enterobacter genus, AM2 isolates to Corynebacterium genus, AM3 and AM6 isolates to Paracoccus genus, and AM5 and AM7 isolates to Azotobacter Sp. The seven isolates of Indigenous bacteria have potential as antibacterial and the diameter of the inhibition zone against E. coli bacteria is AM1 (8.88 mm), AM2 (8.65 mm), AM3 (8.03 mm), AM4 (6.41 mm) , AM5 (9.07 mm), AM6 (9.53 mm) and AM7 (9.44 mm) while against S. aureus AM1 (9.08 mm), AM2 (9.23 mm), AM3 (9.15 mm), AM4 (8.70 mm), AM5 (10.44 mm), AM6 (11.56 mm) and AM7 (9.0 mm).
Impact Evaluation of the Use of Mercury (Hg) and Cyanide (Cn) in Gold Processing Activities on Lombok Island Based on Knowledge and Experience of Gold Miners and Processers on Lombok Island Hilman Ahyadi; Suripto Suripto; Ahmad Jupri; Immy Suci Rohyani
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4468

Abstract

The high value and economic prospects of precious metals, have not been able to cover the environmental, health and social and economic impacts. The conversion of land functions and open pit mining activities as well as the amount of sediment waste causes very significant landscape and environmental changes. This study aims to evaluate the impact of using mercury and cyanide based on the knowledge and experience of actors (miners and gold processors) and the surrounding community on the island of Lombok. Field data collection was carried out by triangulation, namely in-depth interviews with actors and the community, and secondary/reference data from related agencies, especially the health center and several related research results. Gold extraction on the island of Lombok uses two methods which are carried out in stages, namely Amalgamation with mercury in the shelling process and Cyanidation with Potassium Cyanide in the bagging process. The results of the study show that the negative impacts of the mining process are more due to land clearing and miner safety. The impact of gold extraction using mercury is long-term, so it is difficult to identify the impact. Meanwhile, the impact of the use of cyanide is directly felt and seen by the public, especially in terms of decreasing the presence and yield of fish caught in rivers and coasts.
Socio-Economic Study of Maize Farming Households in The Buffer Area of Mandalika Special Economic Zone Central Lombok Regency Dudi Septiadi; Rosmilawati Rosmilawati; Abdullah Usman; Asri Hidayati
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4474

Abstract

The Mandalika Special Economic Zone is one of the priority areas for national economic development that aims to create new sources of economic growth in the region. Maize is a type of food crop that has great potential share in the agricultural sector, especially as fulfillment food needs in the Mandalika Special Economic Zone. The objectives of this study were 1) to analyze the income from maize cultivation in the buffer zone of the Mandalika Special Economic Zone; 2) analyze the perceptions of households producing corn in the buffer zone about the socioeconomic benefits of the existence of the Mandalika Special Economic Zone. The method used in this research is the descriptive method. The respondents in this study were farmers who planted maize in Mertak Village and it was determined that there were 30 respondents who were determined by purposive sampling. The results showed that maize farmers in the buffer zone of Mandalika Special Economic Zone earn income in one growing season with an average income from maize cultivation of IDR 15,392,760/LLG or IDR 13,502,577/ha. Also, maize farmers in the buffer zone of the Mandalika Special Economic Zone benefit from the existence of the Mandalika Special Economic Zone in the form of increasing employment, improving public facilities like; the road infrastructure is of better quality, the physical condition of educational facilities and health facilities is also improving.
Isolation and Activity Test of Lipolitic Bacteria on Different pH and Temperature Prapti Sedijani; Dewa Ayu Citra Rasmi; Kusmiyati Kusmiyati; Miko Eniarti; Siti Rohimah
Jurnal Biologi Tropis Vol. 22 No. 3 (2022): 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.v22i3.4552

Abstract

Lipase is an enzyme that can be applied in many industrial fields so it has a good economic prospects. The demand for lipase was still unfulfilled at the time this article was written. The character of the lipase for industrial needs are vary depending on the industry in which the enzyme is used. Temperature and pH are the two factors that most influence enzyme activity. This article reports on bacteria isolated from coconut, avocado, tempeh, and areca nut and their lipolytic activity at pH 7-10, 30-40oC. Isolation was carried out on NA media supplemented with olive oil and Rhodamine B as the activity indicator. Colonies showing clear zones were used in subsequent work. Activity tests were carried out on the isolation medium pH 7-10 and incubated at 30 or 40oC. Characterization of isolates includes morphological and microscopic observations; proteolytic and amylolytic capability. There were 41 isolates showing lipolytic activity, 26, 7, 4, and 4 isolates from coconut, tempeh, avocado, and areca nut, respectively. Five isolates were selected for further work. Activity tests showed that the best isolates at 30oC were K1A1 and K1A2 at pH 7, each of which had an activity index of 9% and 107%. Meanwhile, at 40oC the best activity was shown by K10 pH 8 with an activity index of 59%. Based on Grams staining and microscopic analysis, isolates belong to Gram-positive coccus bacteria. Isolate K1A1 showed proteolytic and amylolytic activity, K1A2 showed high proteolytic activity but not amylolytic, while K10 did not show both activities.

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