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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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Evaluation of Planting Success and Mangrove Habitat Suitability in Various Planting Years in Pasar Rawa Village, Langkat Regency Ratna Sari; Sutan Sahala Muda Marpaung; Dini Hardiani Has; Aulia Putra Daulay
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.v23i4.5620

Abstract

Mangroves are a type of tree whose habitat is in areas influenced by sea tides. This research aims to determine the percentage of mangrove plant life and habitat characteristics at the planting location in Pasar Rawa Village in the 2018, 2019, and 2020 planting years. The research location is in the forest area of Pasar Rawa Village, which is administratively located in Gebang District, Langkat Regency, North Sumatra Province. The time of the research was carried out from March to June 2021. The success of planting R. apiculata mangrove species in each planting year is above 80%. Based on the measurement results at the three planting locations, the average thickness of the mud was above 40 cm. This indicates the planting location is suitable for vegetation growth. Salinity, acidity, and dissolved oxygen in all study locations are also suitable for mangrove growth. This study concludes that the survival percentage of mangrove planting in Pasar Swamp Village at three years of planting is above 80% and has suitable habitat characteristics for mangrove growth. The success of planting mangroves is inseparable from the role of the community, which maintains and carries out the planting and the types suitable for planting in that location. Suggestions for this research are that it is necessary to thin the location of the 2020 planting year because the distance is too tight and add even more specific environmental factors, such as substrate and nutrients, for even better results.
Effect of Garlic Filtrate as An Alternative Anticoagulant for Osmotic Fragility Test (OFT) Aini; Hijriani, Baiq Isti; Dewi, Fitriani Kusuma; Atfal, Bustanul
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): Special Issue
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.v23i1.5623

Abstract

Osmotic fragility test (OFT) is an examination conducted to measure the resistance of erythrocytes when exposed to hypotonic saline solutions with various concentrations. The purpose of this study was to analyze the effect of garlic filtrate as an alternative anticoagulant for osmotic fragility test (OFT). The samples used were blood samples with heparin anticoagulant. This study is a pre-experimental study, using NaCl solution with concentrations of 0.2%, 0.3%, 0.35%, and 0.55%. The method used to measure OFT value is spectrophotometric method. The data obtained were analyzed using statistical one way Anova. The results showed the percentage value of hemolysis with garlic filtrate at each concentration was 100%, 99%, 95%, and 5%, respectively. Data analysis using ANOVA showed that there was a significant effect on the effect of garlic filtrate as an alternative anticoagulant on OFT with (p < 0.05) 0.000 < 0.05.
Condition of Coral Diversity in Kuta Mandalika Coastal, Central Lombok Regency Dining Aidil Candri; Bagus Hakimi; Hilman Ahyadi; I Wayan Suana; Eka Sunarwidhi Prasedya; Kartini Ambarwati; Aina Ul Mardiati
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.5627

Abstract

Development and operational activities in KEK Mandalika can increase sedimentation of waters caused by erosion of construction material activities, this have an impact on coral reef ecosystems. Coral reef ecosystems have several important roles in support life of various aquatic organisms, Damage to the coral reef ecosystem directly and indirectly, sooner or later will threaten the sustainability of the use of these resources (social economy) and the safety of the community. Observations were conducted in KEK Mandalika coastal at 6 observation points less than 10 m. The results showed that the highest percentage of live coral cover was found in Kuta Mandalika coastal at PIT 4 area (30%, damaged category, moderate status). While the lowest percentage of coverage was at PIT 5, which was 2% (damaged category, bad status). Overall the percentage of coral cover in the Kuta Mandalika area is included in the damaged category. One of the reasons is because at the lowest tide on the beach, the volume of water is very small so that many hard corals are exposed to solar radiation. This limits the types of hard corals that can grow in the intertidal zone of Mandalika coastal. Genus diversity at this location is low, ranging from 0.0782 to 0.1288. Several genera of the Nephtheidae family dominate the observation sites and form colonies of the same genus with a fairly large distribution. The average value of environmental parameter measurements in the Mandalika coastal is included in the good category for soft coral habitat and growth.
Biomass and Carbon Stocks in Post-Agriculture Secondary Forest in Manokwari, West Papua, Indonesia Slamet Arif Susanto; Agatha Cecilia Maturbongs; Heru Joko Budirianto; Eko Tenoyo Sriwidodo; Agustinus Kilmaskossu; Peniwidiyanti Peniwidiyanti
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.v23i4.5631

Abstract

Vegetations in post-agriculture forests (PAF) have the potential to absorb carbon dioxide and store it in to the form of biomass. However, information on carbon stocks in post-agriculture secondary forest in Papua, Indonesia still needs to be available. This study aimed to analyze the density of vegetation and its relationship to the carbon stock of aboveground vegetation biomass on PAF in the lowland of Manokwari, West Papua. This study was conducted on PAF aged 4 and 7 years using a one-factor, completely randomized design. Carbon stock is calculated using an allometric equation based on a diameter at breast height of 1.30 m (dbh ≥5cm). The results showed that 60% of the relative density of trees on the two PAF’s was composed by Premna odorata, Piper aduncum, and Macaranga tanarius. Carbon stocks on PAF aged 4 and 7 years reach 550 kg/ha and 140 kg/ha respectively. There is an increase in aboveground biomass and carbon stock with relative tree density and, tree diameter, which is significantly affected by the age of the PAF (P<0,002). The low carbon stock on PAF aged four years indicates that there has been a significant decrease in soil fertility after several years of cultivation by the local Papuan community. Therefore, there must be a difference in land use management between natural secondary forest and post-agriculture forest.
Prevalence and Intensity of Ectoparasites on Mud Crab (Scylla serrata) in Teluk Pakedai District, Kubu Raya Regency Helfiani Helfiani; Firman Saputra; Diah Wulandari Rousdy
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.v23i4.5635

Abstract

Mud crabs (Scylla serrata Forskal, 1775) is a species of fishery commodity that can be attacked by pathogenic agents such as ectoparasites. Ectoparasites that infect mud crabs can trigger damage to the carapace and gills at a certain number of infections. This study aims to determine the prevalence and intensity of ectoparasites in mud crabs in Selat Remis Village, Teluk Pakedai District, Kubu Raya Regency. The study was conducted by taking random samples and determining the sample size based on the Lemeshow formula (95% confidence level), then to obtain prevalence and intensity it was carried out by examining the body organs (carapace, cheliped or (pereiopod I), pereiopods (walking legs), pereiopod V (swimming legs) and gills) of mud crabs (S. serrata) and identify the species of ectoparasites. Based on the results, the average prevalence of ectoparasites in mud crabs is 45,00% included in the commonly prevalence category. The prevalence value of each ectoparasites was Vorticella (17,50%), Zoothamnium (12,50%), Octolasmis cor (12,50%), Epistylis (15%), Octolasmis angulata (7,50%) and Acineta (2,50%). The highest intensity value of ectoparasites in mud crabs was O. angulata, 28 individuals per an infected mud crab.
Food Composition in The Stomach of Selais Bungkuk (Hemisilurus heterorhynchus) in The Kampar Kiri River, Mentulik Village, Riau Province Roza Elvyra; Nurul Hakiki; Yusfiati Yusfiati; Khairijon Khairijon; Imelda Wardani
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.v23i4.5638

Abstract

Food Composition in The Stomach of Selais Bungkuk (Hemisilurus heterorhynchus) in The Kampar Kiri River, Mentulik Village, Riau Province
Ethnobotany of Food Plants in The Malay Community in Ratu Sepudak Village, Galing District, Sambas Regency Renianda; Rafdinal; Siti Ifadatin
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.5649

Abstract

The Malay people in Ratu Sepudak village use some kind of plant foods. The Malay culture of Ratu Sepudak Village is closely related to the use of plants as food. The purpose of this study was to determine the species of plants, plants parts, utilization categories and processing methods of food plants as well as to determine the value of citation frequency and informant agreement factor (FKI). This study was conducted from August to October 2022 in Ratu Sepudak Village, Galing District, Sambas recency. The method used in this study is purposive sampling and semi-structured interviews of 30 respondens. Quantitative analysis of this study using citation frequncy and informant agreement factor(FKI). Based on the research results food plants were obtained 72 species and 39 families. The most species found are Arecaceae, Poaceae,  and Zingiberaceae, which are 6,94 % each. The most widely used part as food is fruit, which is 51,76%. Planst that are used as food ingredients are the most widely inclued in the category of utilization as vegetables as many as 29 types. The highest value of citation frequency of this study reaches 100%. Utilization category as a staple food and food coloring has the highest value of the informant agreement factor (FKI) is 1.
Identification of Pests and Diseases in Red Chili Plants (Capsicum Annuum L.) in Nangsri, Manisrenggo, Klaten Eliuta Denisa Ekawati; Tri Wiharti; Anwari Adi Nugroho
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.v23i4.5650

Abstract

Red chilies are one of the important types of vegetables cultivated commercially in tropical countries. Insect pests are one of the obstacles in efforts to increase the production of red chili ornamental plants. There are some farmers who do not understand the types of pests that exist in red chili plantations. This research aims to identify the types of pests that attack red chili plants in Nangsri Manisrenggo Village and observe the symptoms of pest and disease attacks. The methods used are observation and interviews. The data obtained was analyzed descriptively qualitatively. The results of the research show that there are 2 types of disease, namely fungi that cause leaf spots, Pestalotia sp and Cercospora sp, and 6 types of pests that attack red chilies, namely: Thrips spp., peach aphids (Myzus persicae), armyworms (Spodoptera litura), flies fruit (Bactrocera spp.), mites (Tetranychus sp.; Polyphagotarsonemus sp.) and whitefly (Bemisia tabaci).
The Effect of Providing Fermented Pineapple Peel in The Ration on The Performance of Peking Ducks N. Haiza; K. Sumadi; N. W. Siti; Bulkaini Bulkaini; Djoko Kisworo; Fahrullah Fahrullah
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.v23i4.5652

Abstract

This research aims to determine the performance of male Peking ducks given rations containing fermented pineapple peel at the Teaching Farm, Faculty of Animal Science, University of Mataram. The research was carried out for 10 weeks using a Completely Randomized Design, consisting of 6 treatments and 5 replications. Each replication used 8 male Peking ducks aged two weeks so that the number of ducks used was 240. The treatments were P0 = control, P1 = 5% fermented pineapple peel, P2 = 10% fermented pineapple peel, P3 = 15% fermented pineapple peel, P4 = 20% fermented pineapple peel and P5 = 25% fermented pineapple peel. The research variables were: final body weight, body weight gain, ration consumption, Feed Converation Ratio, percentage of carcass and non-carcass analyzed using analysis of variance. The results of the study showed that giving fermented pineapple peel up to a level of 25% had a significant effect (P<0.05) on final body weight, body weight gain and feed consumption, but was not significantly different (P>0.05) on the feed conversion ratio, carcass percentage, small intestine length, small intestine percentage, liver percentage, and leg percentage. Conclusion: Providing fermented pineapple peel to a level of 10% increased final weight, body weight gain, feed consumption, head and neck percentage but reduced heart percentage and gizzard percentage. Feed conversion ratio, carcass percentage, small intestine length, small intestine percentage, liver percentage, and leg percentage were relatively similar between treatments.
Dietary Spirulina platensis to Increase Color Brightness and Growth of Betta Fish, Betta splendens Alhan Ferdyawan Saputra; Achmad Noerkhaerin Putra; Mas Bayu Syamsunarno
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.v23i4.5654

Abstract

Betta fish (Betta splendens) are ornamental fish that have a unique color and high economic value. The aim of this research was to evaluate the addition of different doses of S. platensis in feed on color brightness and growth of betta fish. Betta fish (length of 32±4.4 mm) were maintained in containers with a volume of 4 liters at a density of 1 fish/container for 35 days and feeding is done twice a day at satiation. This research consisted of 4 treatments adding different doses of S. platensis in the feed and 5 repetitions, namely: P1: adding S. platensis 0%, P2: adding S. platensis 1%, P3: adding S. platensis 1.5%, and P4: addition of S. platensis 2%. The research results showed that the carotenoids contained in S. platensis are 737.16 ppm/50 g. The addition of S. platensis in feed can improve the color quality of betta fish but does not affect the growth of betta fish. The addition of 1.5% S. platensis in the feed produced the highest values in the parameters of color brightness (9.1 in the 4th week), color diversity (body 62.54%, base of tail 59.52% and tail 61 .22%), and chromatophore cell area (673000 µm2).

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