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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 2,520 Documents
 118   119   120   121   122 
Associations Between Species and Habitat Niches of Macroalgae In Maitara Island Waters, North Tidore District, Indonesia Fadel, Ariyati H.; Subur, Riyadi; Serosero, Rugaya; Abubakar, Yuyun; Abubakar, Salim; Alhadad, M Said; Susanto, Adi Noman
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): 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.v24i3.7118

Abstract

Macroalgae have many benefits, both ecological and economic benefits for society. The ecological benefits of macroalgae that they provide habitat for several types of marine biota such as crustaceans, mollusks, echinoderms, fish or other small fish. Macroalgae on Maitara Island has a fairly high species diversity; however its existence is currently starting to experience pressure, especially due to human activities (residents) who inhabit Maitara Island. The aim of this research is to determine the types of macroalgae, and patterns of association. The methods used in this research were identify of macroalga and associations between species of organisms. Based on the research, 14 species found in Maitara Island waters, with associatoin pattern consists of 3 types such as; positive association, negative association, and non association.
Vegetation Structure and Diversity of Mangrove Species in The Bagek Kembar Natural Forest, Sekotong, West Lombok Hidayat, XZardht Alex; Arifin, Rizki Dewi Sativa Lestari; Syukur, Abdul
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
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.v24i1.7120

Abstract

Mangroves are a community or individual plants that live with special adaptations and form vegetation structures at the tide lines. This research aims to analyze the composition and structure of natural mangrove vegetation in the Bagek Kembar mangrove forest, Sekotong, West Lombok. Data collection used line transect and quadratic methods. The structure and composition of mangrove forest vegetation were analyzed based on density, frequency, dominance, importance value index, Shannon-Wiener diversity index (H'), species richness index (R), and evenness index (S). The research results show that the structure and composition of the natural Bagek Kembar mangrove consists of 10 species and 4 families. The highest importance index value was obtained for the Avicennia marina species with a value of 151.52 for the tree category, 172.16 for the sapling category, and 99.59 for the seedling category. The mangrove diversity index at all growth levels is included in the medium category. The species richness index at the tree growth and sampling levels is in the medium category, but at the seedling growth level it is in the low category. The evenness index at all growth levels is in the fairly even category. Furthermore, the highest density at all growth levels was obtained from the seedling level, followed by saplings and trees. The diameter class density shows an inverted “J” curve which indicates that the forest is in natural condition. Based on the research results, it can be concluded that the structure and composition of mangroves in the Bagek Kembar natural forest has a fairly stable ecosystem condition. Conservation efforts need to be increased to improve environmental sustainability.
DNA Barcoding Analysis of Betok Fish (Anabas testudineus) from Kampar, Riau Based on Cytochrome Oxidase Subunit I (COI) Rahmah, Miftahul; Hasibuan, Aldy Riau Wansyah; Melia, Tisha; Al Khairi, Hapiz; Roslim, Dewi Indriyani
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.7121

Abstract

Ikan betok (Anabas testudineus, Bloch 1792) is one of fishes which is a member of family Anabantidae. Betok is an endemic fish in Riau Province. The scientific study about DNA barcoding of betok fish is still rarely. This research aims to analyze the DNA barcode sequence of cytochrome c oxidase I (COI) on betok fish. Methods were used in this study such as sampling, total DNA extraction, PCR, electrophoresis, sequencing and data analysis. The COI sequence studied had size of 694 bp. The BLASTn analysis showed that the betok fish had the highest similarity of 99.7% with A. testudineus and the lowest 93.00% with A. cobojinus. There was one nucleotide that characterize the betok fish based on the COI sequence namely nucleotide number 309. This study may enrich the DNA barcode database of betok fish in GeneBank.
Analysis of Drinking Water Quality among Employees of Sulianti Saroso Infectious Disease Hospital Nurlaela; Setyawati, Fajar Dwi; Pratiwi, Tiara Zakiyah; Haryadi, Eko
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): 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.v24i3.7128

Abstract

Drinking water is water through or without processing that meets health requirements and can be drunk directly. The aim of the study  is to check the quality of drinking water for employees of Sulianti Saroso Infectious Disease Hospital (SSIDH) so that it is suitable or not for consumption in accordance with established quality standards. Drinking water sampling is carried out twice a year with a sampling point of 8 (eight) samples at every 6 (six) months. Based on the results of physical tests, namely smell, turbidity, taste, temperature, total dissolved solids, and color, it shows that the employee's drinking water has met the quality standards according to applicable regulations. Chemical drinking water quality requirements show pH concentrations ranging from 7.22 – 8 and other parameters including organic substances have met the quality standard requirements. Biological test results show the bacteriological quality of drinking water Total Coliform and Escherichia Coli is 0 according the required quality standard of 0 per 100 ml. The quality of drinking water for employees of RSPI Prof. Dr. Sulianti Saroso based on the results of laboratory examinations shows 100% of samples meet the requirements in accordance with the drinking water quality standard.
Management and Business Analysis of Common Carp (Cyprinus carpio) at the Aquaculture Installation (IPB) Pandaan Riyasya, Muhammad Indra; Rahim, Andi Rahmad
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): 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.v24i3.7135

Abstract

The growing global population increases the demand for protein, making the aquaculture and fisheries industries vital. This study aims to optimize goldfish hatchery management at the IPB Pandaan, East Java, to improve production and seed quality. The research was conducted in January-February 2024 at the IPB Pandaan Fisheries Breeding Installation, using observation and interview methods. Primary data were obtained from interviews with business actors and stakeholders, while secondary data were from literature studies. Data analysis includes production management, water quality, feed, and financial evaluations such as R/C Ratio, BEP, and PP to assess performance and potential efficiency improvements in the goldfish hatchery business. Goldfish hatchery management at IPB Pandaan includes pond preparation, broodstock selection, spawning with temperature and water quality control, egg hatching, feeding, nursery, and seed harvesting. Water quality is maintained with temperatures of 23.9-30.5 ºC, pH 7.3-8.9, and DO 3.2-6.3 ppm. Total investment is Rp 37,500,000, with fixed monthly costs of Rp 3,335,414 and operational costs of Rp 500,000. The total revenue is Rp 7,784,000, and the profit is Rp 3,752,752. An R/C Ratio of 1.93 indicates a profitable business, with a payback period of 16.39 months and a BEP production price of Rp 14,497 per cup.
Reef Fish Abundance and Diversity at Marine Protected Area Gili Sulat and Gili Lawang, East Lombok, West Nusa Tenggara Putra, Nyoman Widi Artha; Paryono, Paryono; Jefri, Edwin
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): 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.v24i3.7138

Abstract

Gili Sulat and Gili Lawang have the potential to become a source of livelihood for the community due to their high biodiversity, where these two small islands can be used as a place for fisheries and ecotourism development. However, in West Nusa Tenggara itself there is still widespread destructive fishing which can affect the abundance of reef fish. Therefore, this research focuses on assessing the diversity and abundance of reef fish in the waters of Gili Sulat and Gili Lawang, Sambelia District, East Lombok Regency. This research was conducted from November 2023 to February 2024. Reef fish abundance data was collected using the UVC (Underwater Visual Census) method. The research results showed that there were 76 species, 38 genera and 16 families of reef fish in total at the six observation stations. The largest number of reef fish individuals is in the Pomacentridae family with 1180 individuals (0.79 ind/m2). The highest biomass of herbivorous fish and target fish is found in the Gili Sulat Sustainable Fisheries Zone, namely 2312.72 gr/m2, followed by the Gili Lawang Core Zone with a biomass value of 1221.32 gr/m2, while the Gili Lawang Utilization Zone has the lowest biomass value among all observation station.
Screening of Endosymbion Fungus Potential on The Stem of Avicennia sp. from Shore of Bandar Lampung City as an Antibacterial Susanti, Oktora; Harpeni, Esti; Efendi, Eko; Karima, Nisa; Muamar, Aslam
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.7141

Abstract

Mangroves scattered in the shore of Lampung have considerable potential to be used as medicines and antibiotics, because the distribution of various mangroves on almost every shore of Lampung is overgrown with various mangrove plants. Mangroves have a symbiotic relationship with microbes, so that mangrove endosymbion microbes generally have the same bioactive compounds as their hosts. Mangrove Avicennia sp. is one of the mangrove species that has the ability to be antibacterial. Mangrove endosymbion microbes can also have the ability to inhibit antibacterial pathogens that cause disease. Diseases whose cases are found in the community, one of which is caused by Staphylococcus aureus bacteria and Escherichia coli. The purpose of this study is to screen the potential isolate of the endosymbion fungus Avicennia sp. as an antibacterial against S.aureus and E.coli bacteria. Isolation results of Avicennia sp. 12 isolates of endosymbion fungi were obtained that have inhibitory activity against S. aureus and E. coli. and 5 isolates (WBJ-R01, WBJ-R04, WBJ-R05, WBJ-R09, and WBJ-R12) that had the best inhibitory zone activity. Extracts from the five endosymbion fungi isolates have inhibitory zones in both pathogenic bacteria. It is proven that the five extracts at the highest concentration are in a strong inhibition zone. WBJ-R01, WBJ-R04, WBJ-R05, WBJ-R09, and WBJ-R12 isolates had inhibition zones of 11.4 mm, 11 mm, 11.73 mm, 12.3 mm, and 13.23 mm, against S.aureus bacteria respectively. and against E.coli bacteria 14.03 mm, 10.3 mm, 13.13 mm, 9.73 mm, and 6.5 mm.
Association of Mollusks with Mangroves to Support Ecotourism Development on the South Coast of Lombok Island Samtika , Nuning; Muh Arafatir Al Jarwi; Abdul Syukur
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
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.v24i1.7142

Abstract

Mangroves are a type of plant that has adapted to environments that have salinity, such as in estuary areas. Mangroves that grow and develop contribute to sustainable fauna diversity, such as molluscs. Therefore, the aim of this research is to assess the diversity of molluscs associated with mangroves as a natural tourist attraction on the southern coast of East Lombok (Bale Mangrove). The methods used are belt transect and hand sorting and the data analysis used is species diversity (Shannon-Wiener), species uniformity (uniformity index), species dominance (dominance index). The research results have found 16 species consisting of three bivalves and 22 species consisting of eight Gastropods. Furthermore, there are four species of mangroves found in Bale Mangrove ecotourism, namely: Rhizopora Apiculata, Rhizhopora Mucronata, Sonneratia Alba, and Avecinea Marina. Furthermore, the index values ​​for species diversity, species uniformity and species dominance show that Bivalves have a species diversity of 1.306, while Gastropods have a species diversity of 1.016. The species uniformity of Bivalves is 0.729, while the Gastropods have species uniformity of 0.631. The dominance index for Bivalves is 0.393 and Gastropods is 0.501. Therefore, the conclusion is that the potential of mangroves with their associated biota can become a natural tourist attraction.
The Effectiveness of Cuscuta sp. Crude Extract as an Antibacterial of Streptococcus agalactiae in Tilapia Fry Oreochromis niloticus Fidyandini, Hilma Putri; Setyawan, Agus; Noor, Huriyatul Fitriyah; Sakti, Doni Bilga Komara
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.7148

Abstract

Tilapia (Oreochromis niloticus) is a leading freshwater fishery commodity in Indonesia. However, aquaculture has an obstacle, namely the lack of healthy fish seeds due to Streptococcus disease caused by the bacteria Streptococcus agalactiae. One natural ingredient that is known to have antibacterial properties is dodder (Cuscuta sp.). At the Fisheries Cultivation Laboratory at the University of Lampung, the aim of the research was to determine the efficacy of dodder extract in controlling bacterial infections caused by S. agalactiae in tilapia fry. CE was attempted on an in vitro scale against the microorganism S. agalactiae using a circle dispersion strategy. Then, CE on the dodder was tried for Least Inhibitory Focus (MIC) with a convergence of 100 ppm, 300 ppm, 500 ppm and 700 ppm. Poisoning test on tilapia seeds with focus referring to the MIC test. The research results revealed that the yield of tali putri extract was 1146 percent. Steroids, flavonoids, alkaloids, saponins and tannins are the components of the active compound content of dodder extract in phytochemical tests. The results of the separate GC-MS dodder test produced the compound 9-octadecenoate with a maintenance area of 10.38%. Dodder removal can withstand S. agalactiae from a concentration of 100 ppm with an inhibition zone of 6.64 mm to thickness without weakening with an inhibition zone of 7.50 mm. The MIC test results show that 100 ppm is the optimal concentration for wound healing. The results of the damage test (LC50) at a concentration of 100 ppm showed that the death rate of tilapia fry was the smallest compared to other fixations. It is possible that CE dodder can be made as an antibacterial against S. agalactiae.  
Morphotype Analysis of Endophytic Fungus Isolated from Taxus sumatrana of Mount Singgalang, West Sumatra Region Sari, Wulan Komala; Periadnadi, Periadnadi; Nurmiati, Nurmiati
Jurnal Biologi Tropis Vol. 24 No. 3 (2024): 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.v24i3.7154

Abstract

Taxus sp. plants in temperate climates like Europe and America have been extensively studied and identified as promising sources of endophytic microbes that produce anticancer compounds such as Taxol. These endophytic microbes exhibit high adaptability to the specific growing conditions of their host plants. Research has highlighted metabolic differences between tropical and temperate endophytes. The presence of Taxus sumatrana plants in tropical areas like Mount Singgalang in West Sumatra, Indonesia was subjected to explore potential new sources of bioactive compounds from tropical microbes. This research aims to identify the morphotypes of endophytic fungi isolated from the barks of Taxus sumatrana plants originating from Mount Singgalang. The method used is small pieces of the inner bark of Taxus sumatrana were placed on the surface of growth medium (PDA). The small hyphae emerging from the piece of plant samples were regularly monitored for the morphological characteristics of the colony and conidia structure. Each fungal culture was checked for purity and transferred to another PDA plate by the hyphal tip method. The investigation isolated two endophytic fungi from the bark of Taxus sumatrana: Pestalotiopsis microspora and Neopestalotiopsis sp.

Page 120 of 252 | Total Record : 2520

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