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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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Diversity of Grasshopper in The Rice Fields of Kalijaga Village, East Lombok Siti Nurul Inayah; Mohammad Liwa Ilhamdi; Didik Santoso
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.v23i3.5261

Abstract

Grasshoppers are the main herbivorous insects in the ecosystem, grasshoppers also act as pests, as predators, decomposers of organic matter and carrion eaters. To maintain the ecosystem of rice fields, grasshoppers have a very importants role in maintaining its stability. The research aimed to determine the level of diversity, evenness and dominance of grasshopper species in the rice fields of Kalijaga village. The kinds of this research was done by catching the grasshopper by using sweeping net. The location was taken in five location around Kalijaga such as west, east, north and middle location. The data was taken in nine times repeating for three month. The data was taken in the morning around 08.00-11.00 and afternoon 15.00-17.00 o’clock. The data analysis was used ecology index that include Shanon-Winner (H’), Evennes index (E’) and Simpson domination index (D). Based on data analysis was gotten that (1) there were 1,957 total of diversity index or include medium categories, (2) there were 0,816 the total number of grasshopper species of evenness index or include medium categories (3) there were 0,178 total number domination index of species with low categories.
Antibacterial Activity of Pineapple Peel Eco-enzyme (Ananas comosus L.) on Growth Pseudomonas aeruginosa and Staphylococcus epidermidis Hendri Hendri; Zulfah Zakiah; Rikhsan Kurniatuhadi
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.v23i3.5272

Abstract

Eco-enzyme is a fermented product from an organic waste substrate, molasses, and water. Eco-enzyme can be used as antibacterial because it produces organic compounds such as alcohol and acetic acid. Pineapple peel waste (Ananas comosus L.) can be used as an eco-enzyme. This study aimed to test the antibacterial activity of pineapple peel eco enzyme against Pseudomonas aeruginosa and Staphylococcus epidermidis. The study used the method of determining the Minimum Inhibitory Concentration (MIC) and Minimum Killing Concentration (MBC) of pineapple peel eco-enzyme with 8 treatment levels namely negative control (aquadest), positive control (ciprofloxacin 5 mg/mL), 3.125%, 6.25 %, 12.5%, 25%, 50%, and 100% eco-enzymes. Based on the research results, it was known that the MIC value of pineapple peel eco-enzyme against P. aeruginosa, and S. epidermidis was 12.5% and 3.125%, respectively. Eco- enzymes from pineapple peel did not show minimum killing concentrations. Eco-enzyme of pineapple peel is only bacteriostatic towards the growth of P. aeruginosa and S. epidermidis bacteria.
Carbon Content Potential of Mangrove Species in Gili Sulat, East Lombok Ainun Diniyatushoaliha; Agil Al Idrus; Didik Santoso
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.v23i3.5275

Abstract

Mangroves are a unique ecosystem because they live in two transition zones, always green, and tolerant of salt. However, globally it is under serious threat due to environmental issues that are closely related to deforestation and degradation of mangrove forests. Mangrove ecological services as a carbon sink can help mitigate climate change and global warming. This capability has not been utilized optimally, especially in NTB, specifically Gili Sulat, which has natural mangrove forests. Therefore, this research aims to identify, explain, describe, and understand the carbon content of trees in mangrove species in Gili Sulat. The station determination method is done by purposive sampling. The sampling technique for carbon content was carried out using a non-destructive method, namely measuring the diameter at breast height and tree height. The results of the study found nine mangrove species in the tree category where the highest potential carbon content was found in the species Bruguiera gymnorrhiza, namely 0.285 ton C/ha and 183.255 ton C/643 ha, and the lowest was found in the species Exoecaria agallocha, namely 0.010 ton C/ha and 6.430 ton C/643 Ha. Meanwhile, the total biomass, carbon content, and carbon dioxide absorption of mangrove species in Gili Sulat were 661.004 tonnes/643ha, 331.145 tonnes C/643 ha, and 1212.698 tonnes CO2/643 ha respectively. The high potential carbon content of mangrove tree species in Gili Sulat proves that the ecological services of Gili Sulat's mangroves have a positive impact on climate change mitigation and global warming.
The Effect of Modified Media on The Antibacterial Activity of The Sea Sponge Symbion Fungi, Fusarium solani Muslihuddin Aini
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.v23i3.5281

Abstract

The purpose of this study was to analyze the biomass production and bioactivity of sponge symbiont mushroom extracts on modified media using experimental laboratory methods. Biomass was calculated by weighing the wet weight of the symbiont mushroom mycelium and then tested for antibacterial activity with an extract concentration of 500 µg/disk. The results of this study, namely the weight of F.solani mycelium on MKD + MGV media was 10 grams, the mass of mycelium on MKD media was 9 grams, while the mass of mycelium on MEB standard media was 9.7 grams. The yield weight of the F.solani crude extract cultured on MKD + MGV media was 0.0386 grams or 0.3860% of the wet weight, on MKD media it showed that the crude extract weight was 0.0276 grams or 0.3067% of the wet weight, while on MEB the crude extract weight was 0.0119 grams or 0.1190% of the wet weight. The results of the antibacterial test showed that the largest inhibition zone for MDR (Meticilin Resistant Staphylococcus aureus) bacteria was F.solani crude extract cultured on MKD + MGV media, namely 25.83 ± 3.37 mm, F.solani cultured on MKD media of 22.10 ± 2.51 mm , while F. solani cultured on MEB media was 19.00 ± 0.52 mm. The results of the mass culture of the fungus Fusarium solani on modified media showed that the mushrooms cultured on MKD + MGV media had greater biomass, crude extract and antibacterial activity compared to MKD and MEB culture media.
The Effects of Plasticizer Types on Properties of Whey-Gelatin Films Fahrullah Fahrullah; Djoko Kisworo; Bulkaini Bulkaini; Haryanto Haryanto; Baiq Rani Dewi Wulandani; Wahid Yulianto; Azhary Noersidiq; Vebera Maslami
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.v23i3.5283

Abstract

Edible film is an alternative packaging that can be applied to food because it has biodegradable properties. The use of plasticizers can be used in the manufacture of edible films to increase the flexibility and densibility of the film. This study aims to determine the effect of plasticizer type on the thickness, WVTR, and moisture content of whey-gelatin film blends. The research was conducted in a Completely Randomized Design with three treatments, treatments that make a difference are tested with Duncan's Multiple Range Test (DMRT). The treatment used different plasticizer (P1G: Glycerol; P1S: Sorbitol; and P1P: polyethylene glycol (PEG) 400). The properties of whey-gelatin films showed that thickness was at 0.0350-0.0352 mm; the WVTR was at 4.87-6.22 g/m2/day; the water content was at 12.55-15.69%. The use of glycerol as plasticizer produced the best edible film characteristics compared to sorbitol and PEG 400 with a thickness value of 0.0350 mm; WVTR of 6.22 g/mm2/day and moisture content of 12.55%.
Diversity and Dominance of Sea Urchins (Echinoidea) on Sambalagi Beach, Siompu Island, South Buton Regency Maretik Maretik; Ramad Arya Fitra; Winardi Winardi
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.v23i3.5338

Abstract

Many species of sea urchins (Echinoidea) can be found in the waters of Sembalagi Beach, Siompu Island. However, the diversity of sea urchins (Echinoidea) on the coast has not been scientifically researched and published. This study aims to determine the types, hunting, poaching and dominance of sea urchins (Echinoidea) at Sambalagi Beach, Siompu Island, South Buton Regency. This study uses a quantitative descriptive method with observation techniques. There are three research stations, namely station I (rocky and seagrass substrate), station II (sandy and seagrass substrate), and station III (rocky and seagrass substrate). The data obtained were analyzed using the formulation of documents, documents, secrecy and Shannon-Winner domination. The results showed that there were 5 species of sea urchins (Echinoidea) which namely Diadema setosum, Echinothrix calamaris, Tripneustes gratilla, Echinometra mathaei and Salmacis sphaeroides. The species diversity index (H') for the three abnormalities was classified as moderate, namely station I (H' 1,34), station II (H' 1,18) and station III (H' 1,22). The highest relative abundance of Echinoidea was found in Tripneustes gratilla species at Station II (37,67%) which had a lot and the lowest relative decline index was found in Echinothrix calamaris and Echinometra mathaei at Station III (1,52%) less abundant. The highest evenness index is at station II (0,85) which is very even and the lowest is at station III (0,76) which is more evenly distributed. And the highest dominance index is at station II (0,32) with moderate dominance and the lowest dominance index is at station I (0,29) with low dominance.
Reproductive Aspects of Lemuru Fish (Sardinella Lemuru) Landed at PPI Tanjung Luar East Lombok as Enrichment Material for Zoology Subjects Lidia Zindarti Nurmia; Karnan Karnan; Mahrus Mahrus
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.5351

Abstract

Sardinella lemur is a pelagic fish with the most population in Indonesia, precisely in the Bali Strait. This study aims to determine the reproductive lemurs of lemurs fish (S. lemur) that landed at PPI Tanjung Luar East Lombok as enrichment material for zoology subjects. This research was conducted in January-March 2023, taking place in Tanjung Luar, East Lombok. This study used lemurs fish (S. lemurs) with a total sample of 188 individuals, 56 females, and 132 males. This research is included in the quantitative descriptive research with PCAS sampling. Data was collected by measuring body length, weighing body weight, calculating sex, classifying TKG, and analyzing GMI. It is estimated that the lemurs spawn in April-June with reference to TKG and IKG. TKG analysis by observing the morphology and weighing the gonad weight of the fish while the IKG compares the gonad weight and body weight multiplied by 100%. The TKG found ranged from TKG I to TKG V with the dominant sex being male. The highest TKG was found in March for females who were pregnant while TKG for males with developed gonads. From the results of the data analysis, the highest female sex index was obtained in February 3.5% and the lowest was in March 0.3% male. The results of observations of the highest average body length of lemurs fish were in February at 15.75 cm and the lowest in March at 15.04 cm. Based on the body weight of lemurs fish, the highest was in February at 33.03 gr and the lowest was in Marat ch 30.63 gr. Based on the results of the research and discussion it can be concluded that lemurs fish in the waters of Tanjung Luar, gonads mature for lemurs fish in March and are expected to spawn from April to June.
Ability of Melon (Cucumis melo. L) Fruit Juices Based Tris Diluent on The Quality of Frozen Spermatozoa of Bali Cattle After Thawing Mujahidurrohman Mujahidurrohman; Enny Yuliani; Lukman HY
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.v23i3.5380

Abstract

The high potassium content in melon plays a role in maintaining the normal function of the muscles, heart, nervous system, and potassium is also the main regulator of blood pressure. The aim of this study was to evaluate the effect of using melon juice (Cucumis melo L.) as a diluent on the quality of spermatozoa and semen of Bali cattle both before and after freezing. The Banyumulek Artificial Insemination Center produces sperm used in Bali cattle breeding. The technique used was a completely randomized design (CRD) with 4 treatments and 15 replications. The first treatment was 100% egg yolk tris buffer without the addition of melon juice (P0), the second treatment was 80% buffer without the addition of 20% melon juice (P1), the third treatment was 60% buffer with the addition of 40% melon juice (P2). The fourth treatment was 40% buffer with the addition of 60% melon juice (P3). The outcomes showed that the worth of flawless plasma film and mortality upsides of ox-like semen after weakening and subsequent to defrosting were not essentially unique. Be that as it may, not altogether disparate in that frame of mind of motility, level of reasonability, level of ordinariness and post-defrosting anomalies. According to the findings of this study, melon juice can be used as an alternative extender for fresh Bali cattle sperm and preserve the quality of spermatozoa.
Phytoplankton as Bioindikator of Water Quality in The Batu Dendeng River West Lombok Afiatul Hafifah; Agil Al Idrus; Lalu Japa
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.v23i3.5407

Abstract

This exploratory descriptive study with a qualitative approach was aims to analyze the water quality of the Batu Dendeng River in West Lombok through a study of the phytoplankton community structure. Sampling was carried out using purposive sampling method. Water sampling was carried out using plankton net of 20µ mesh sized. Observation and identification of phytoplankton was carried out at the Biology Laboratory of FKIP University of Mataram using a binocular microscope. Phytoplankton data was analyzed based on abundance, species diversity, species uniformity and species dominance indexs. The results showed that the community structure of identified phytoplankton in the Batu Dendeng River consisted of 5 classes and 52 species with abundance value of 714.074 (ind/L). Phytoplankton species diversity, uniformity, and dominance indexs of Batu Dendeng River were 2.591, 0.66, and 0.13 respectively. The water pollution criteria based on the diversity index of phytoplankton species, indicates the water quality of the Batu Dendeng River West Lombok was in the slightly polluted category.
Diversity of Molluscs Associated with Mangroves on The Gerupuk Beach in Central Lombok in 2023 Jennifer Isabelana Dasilva; Abdul Syukur; Mahrus Mahrus
Jurnal Biologi Tropis Vol. 23 No. 4 (2023): October - December
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.v23i3.5425

Abstract

Mangrove ecosystems have an important role in coastal areas. One of the roles of mangroves is to protect the shoreline and prevent seawater intrusion. Molluscs are one of the mangrove association biota whose lives are influenced by the presence of mangrove forests. Therefore, the purpose of this study was to determine the diversity of molluscs and the relationship between mangrove density and limiting molluscs to the coastal mangrove area of ​​Gerupuk Beach, Central Lombok. Sampling of molluscs used the quadrate sampling method with purposive sampling by taking into account the mangrove species found in the observation plots. The data obtained were then analyzed with the charisma index, associations, and Pearson's correlation coefficient. The results of this study obtained 13 species of Molluscs consisting of 12 species of the Gastropod family and 1 species of the Bivalvia family. The Brachyura diversity index at the research station was moderate with a value between 1.48–1.88. Furthermore, there were 8 species of Molluscs associated with 4 species of mangrove from 13 species of Molluscs found. The linear regression equation y = 0.1429x + 0.0007 with a Pearson correlation coefficient (r) of 0.57 indicates a strong relationship between the independent variable (x) mangrove density and the dependent variable (y) exposure to molluscs. The conclusion of this study is that the diversity of molluscs in the mangrove area of ​​Gerupuk Beach is included in the moderate category and there is a significant relationship between mangrove density and mollusk attractions.

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