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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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The Preference of Trigona sp for pollen various plant species in Kawasan Rumah Pangan Lestari Wardatul Uyun; Karnan Karnan; M. Yamin
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.v22i1.3061

Abstract

Kawasan Rumah Pangan Lesatri (KRPL) is one of the efforts that can be done to manage food security in the face of climate change. The management of the potential contained in KRPL is by applying Trigona sp honey bee cultivation which is integrated with agricultural land. The success of honey bee cultivation is highly dependent on the availability of feed in the environment. This study aims to determine the preferences of pollen collected by Trigona sp at KRPL. This type of research is a qualitative research with Chi square analysis. The research sample was bee pollen contained in 14 stup. The research was conducted from July-November. Data collection was carried out in October and November by making observations at KRPL with an area of 784 meters then making plant reference preparations that have the potential to be Trigona sp pollen feed in KRPL and comparing reference preparations with pollen preparations in Trigona sp stup. The results of the research at KRPL showed that there were 20 types of plant pollen in KRPL. The results of the descriptive analysis with chi square showed that there was a preference for the type of pollen that was fed to Trigona sp bees with a value of x2h > x2t so that H0 was rejected and Ha was accepted.
Improvement of Microalga Biodiesel Production Capacity Suripto Suripto; Lalu Japa
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): 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.v20i3.2365

Abstract

This research is directed at developing renewable fuel sources, which are not only environmentally friendly, but also more importantly harvested faster and not competitive with agricultural land. For this reason, the potential oil-producing microalgae need to be explored, because it has fast growth and its cultivation development will not compete in land use with food agriculture. This study aims specifically to determine the types of microalgae producing biodiesel oil that can be isolated from the natural Wallacea in NTB waters, to determine light spectrum treatment and N elimination in microalgae culture which significantly increases the productivity and quality of the biodiesel it produces. Based on the distribution map of potential biofuel-producing microalgae types in NTB waters, samples will be collected from several NTB waters, then the target types of microalgae are isolated and cultured in two systems: a closed system (bioreactor) and an open system (raceway pool) with light spectrum variation treatment and elimination of N in microalgae culture nutrients to increase the productivity and quality of the biodiesel oil produced. Biomass was harvested every 48 hours from the bioreactor and every 4 weeks from the experimental pond. Microalgae biomass was extracted with hexane to produce primary oil. This primary oil usually still has a relatively high viscosity compared to petrodiesel, so it is then trans-esterified with methanol and an acid catalyst to increase the fire point and reduce its viscosity. Oil fractionation is also carried out to sort and determine the composition of saturated, mono-unsaturated and poly-unsaturated fatty acids which greatly determine the biodeasel quality of these microalgae. The biodiesel quality variables to be measured are density, viscosity, flash point, freezing point, solubility in water, vapor pressure, reactivity, physical appearance, odor and toxicity. The result showed that, in the community of marine microalgae from Lombok and Sumbawa Islands consist of 62 species of potential producing-oil microalgae were dominated by Bacteriastrum delicatulum, B. variance, Chaetoceros amini, C. affinis, C. liciniosum, C. lorenzianum, Gyrosigma sp., Nannochloropsis oculata, Nitzchia spp., Oscillatoria sp., Pseudonitzschia spp., and Thalassionema nitzschicoides. Types of oil-producing freshwater microalgae in Lombok Island consist of 19 species of potential producing-oil microalgae, identified with high abundance and dominance, covering Microcystis aeruginosa, M. incerta, Nostoc sp., and Pediastrum boryanum. The oil content of the three species of microalgae, namely Chaetoceros amini, Nannochloropsis oculata, and Nitzchia spp which had been cultured by trietmant were 34, 68, and 46% dry weight, respectively.
Benthic Habitat Mapping Using Sentinel-2A Satellite Imagery in Serewe Bay Denianto Yoga Sativa; I Gede Nano Septian; Febrian Kusuma Atmanegara
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.v22i1.3157

Abstract

Serewe Bay is an important area for sustainable fisheries. This information on benthic habitats is important to know for sustainable management. However, at the moment there is no information on the distribution of benthic habitats in Serewe Bay. The research utilizes Sentinel 2A satellite imagery where the image used is obtained through the earthexplorer.usgs.gov website. Image data will be analyzed through several correction analysis processes, namely reflectance correction, sunglint, and water column or Lyzenga in order to obtain an image display that can be used to identify benthic habitats in Serewe Bay. In addition, a field data survey was also carried out to test the accuracy of the results of processing the Sentinel 2A satellite image of Serewe Bay. Image processing results show that there are 3 categories of benthic habitats, namely Seagrass, Sand and Mixed habitats in which there are macroalgae, dead coral, and coral fractures. The results of the field survey and accuracy calculations show that the accuracy of sentinel 2A image processing in Serewe Bay reaches 63.41% with the dominant benthic distribution consisting of seagrass, mixed benthic habitat and sand. Meanwhile, the calculation of the area of important benthic habitats such as seagrass beds in Serewe Bay can reach 156 Ha.
The Weight of Seedlings Differs on the Growth of Sargassum sp. Ifla Afifilah; Nunik Cokrowati; Nanda Diniarti
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.v21i1.2540

Abstract

Sargassum sp. is a brown alga containing alginate and iodine and is used in the food, pharmaceutical, cosmetic and textile industries. Cultivation of Sargassum sp. has not been carried out, but it needs efforts to be cultivated so that its availability is sustainable. This study aims to determine the growth of Sargassum sp. cultivated with different seed weight in the longline method. This research was conducted from December 2020 to January 2021, in the waters of Ekas Bay, Ekas Buana Village, Jerowaru District, East Lombok Regency. This research was conducted using experimental methods and using the weight difference treatment of the seeds of Sargassum sp. Cultivation was carried out for 30 days. The experimental design used in this study was a completely randomized design consisting of 5 treatments and 4 replications. The treatments were treatment A (seeds weighing 25 g), B (seeds weighing 50 g), C (seeds weighing 100 g as a control), D (seeds weighing 150 g) and E (seeds with a weight of 150 g). weight 200 g). The results showed that E treatment showed the best growth results with the growth parameters measured were absolute growth, specific growth, number of leaves and number of fruits. This study concludes that different seed weight has a significant effect on the growth of seaweed Sargassum sp. with the longline method with the best seed weight in this study was the E treatment (200 g) with an absolute growth of 437.5 g, a specific growth rate of 21.50%, 4999 fruit numbers, and 3614 leaves.
The Distribution Pattern of Mollusks Has Economic Value Concerning Substrate Characteristics in Lake Maninjau Muhamad Suhaemi Syawal; Yusli Wardiatno; Sigid Hariyadi
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): 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.v20i3.2263

Abstract

Lake Maninjau is one of the tectovulcanic type lakes in West Sumatra Province which is used as a food source in the presence of fauna groups such as mollusks. The main purpose of this study is to determine the distribution of mollusks concerning the substrate in Lake Maninjau. This research was conducted three times from March-September 2015 at seven points of the river estuary around Lake Maninjau. The result of the study shows that Corbicula moltkiana was mostly found at Pandan station, while Melanoides tuberculata and Anodonta woodiana were mostly found at Muko-Muko station. The distribution pattern of Corbicula moltkiana and Melanoides tuberculata shows a tendency to live in groups. The waters of the estuary around Lake Maninjau are dominated by sand with TN and TP concentrations ranged from 0.093 - 0.610 mg kg-1 and 0.427 - 2.137 mg kg-1, respectively.
Identification of Parasitic Worm Eggs in Cow Feces from Sepang Bay, Lembar District, West Lombok Regency, West Nusa Tenggara Ahmad Jupri; Nina Nurraudatul Jannah
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.v21i3.3002

Abstract

Cows are one of the ruminant animals and farm animals that have a higher economic value compared to other livestock such as chickens, goats, buffalo and others, so many people build cattle farming businesses. In this case, the health of farm animals is one of the main factors that determine the successful production of cows. The study aims to detect the type of eggs from parasitic worms in cow feces and the degree of infection based on Total Standard (Egg Per Gram). Fecal sampling is done randomly from traditional breeder cows in Teluk Sepang Lembar Subdistrict. The sample number of 10 community cattle farms. Identification of the type of worm was carried out at UPTD Animal Hospital and Veterinary Laboratory of Animal Husbandry and Animal Health Office of West Nusa Tenggara Province. Furthermore, quantitative examination uses the buoyant method (Flotation method) and qualitatively with the Mc. Master method that calculates the number of eggs per gram (EPG) of feces. The results showed 6 negative samples and 4 positive samples infected with parasitic worms,and  2 types of worm eggs of the nematode class namely Trichostrongylus sp. and Chabertia ovina , and 1 species of cestoda class namely Moniezia sp. Based on the standard total EPG (Egg Per Gram) feces it is known that the degree of infection of the type of worm eggs Trichostrongylus sp., Chabertia ovina and Moniezia sp. It is low level. 
Uma Lengge: A Local Wisdom of Plants and Environmental Resources Utilisation in Bima Traditional House Architecture, West Nusa Tenggara Maryanti Maryanti; Immy Suci Rohyani; Kurniasih Sukenti
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.v21i1.2471

Abstract

Uma Lengge is a traditional house of Bima tribe located at Maria Village, Sumbawa Island, West Nusa Tenggara, with main raw material consisting of species of woods, bamboos and reeds. As one of the cultural heritage in West Nusa Tenggara, a study that support the  cultural preservation efforts is needed, including the preservation on plants used in its construction. This ethnobotanical research aims to reveal the local wisdom and other ethnobotanical aspects contained in Uma Lengge architecture. This descriptive exploratory research applied qualitative and quantitative ethnobotanical research methods based on data collection carried out through observation, interviews and documentation. Informants selection used purposive sampling and snowball sampling method. Qualitative and quantitative data were analyzed descriptively based on the observations, interviews, and calculations of Reported Use (RU) and Index of Cultural Significance (ICS). The result showed that local wisdom contained in Uma Lengge architecture is still applied by the local people from generation to generation in term of plants utilisation in Uma Lengge construction, ancient habits, customs, and the preservation of annual traditions or rituals that have good values to be passed on. There are 11 species used as materials in Uma Lengge constuction, namely Bambusa vulgaris, Artocarpus heterophyllus, Dalbergia latifolia, Tectona grandis, Areca catechu, Gossampinus malabarica, Imperata cylindrica, Ficus benjamina, Cocos nucifera, Gigantochloa apus and Swietenia macrophylla. Plant utilisation in Uma Lengge is used in 10 categories: poles, floors, beams, sloofs, roofs, unifiers, rodent insulation boards, wind breakers, stairs and fences. Conservation efforts for species involved in Uma Lengge construction need to be done, especially for species with limited availability. It is recommended that this cultural site should get more attention and efforts to preserve the cultural heritage along with all local wisdom related to plants and environmental utilisation contained in it.
Response of Sweet Corn (Zea mays L. Saccharata) Growth on the Treatment of Organic and NPK Fertilizer Ahmad Raksun; I Wayan Merta; I Gde Mertha; Mohammad Liwa Ilhamdi
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.v21i1.2443

Abstract

Sweet corn fruit is one of the food favored by the people of Indonesia. The growth and yield of sweet corn can be increased by fertilizing. Research on the response of sweet corn growth to organic and NPK fertilizer was conducted in the Terong Tawah Village, West Lombok Regency. The purpose of this research was to determine: (1) response of the growth of sweet corn to the organic fertilizer treatment, (2) response of the growth of sweet corn to the NPK fertilizer treatment, (3) the effect of the interaction between organic and NPK fertilizer on the growth of sweet corn. The growth parameters of sweet corn are stem height, leaf lenght, number of leaf and stem diameter. Research data were analyzed using analysis of variance. The results showed that: (1) sweet corn growth has a positive response to the organic fertilizer, organic fertilizer can increas stem height, leaf lenght, number of leaf and stem diameter, (2)  sweet corn growth has a positive response to the NPK fertilizer, NPK fertilizer can increase all  growth parameter, (3) the interaction between organic and NPK fertilizer has no significant effect on all growth parameters, (4) the optimum dose of organic fertilizer is 1.5 kg m-2 of agricultural land, (5) The treatment of 6 g NPK fertilizer was better than other treatments.
Diversity of Butterfly (Rhopalocera) in The River Flow Area at Taman Hutan Raya Sesaot as an Enrichment of Animal Ecology Practicum Materials Rawindy Aulia Hapsari; Agil Al Idrus; Mohammad Liwa Ilhamdi
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.v22i1.2610

Abstract

The butterfly is one of the insects type that originated from the order of lepidoptera, which having scaly wings. The scales is what gives pattern on the butterflies’ wings. In ecosystems, butterflies serves as a pollinator that helps plants to reproduce. Besides, butterflies like the environment that is close to the river flow. Thus allowing the possibility of butterflies activities in the surrounding area over the river flow at Taman Hutan Raya Sesaot. The research is aimed to identify species of butterflies (suborder Rhopalocera) and to determine the level of diversity of butterflies in the river flow areas at Taman Hutan Raya Sesaot. This research is carried out from January until February 2021 in the river flow area at Taman Hutan Raya Sesaot. Conducted in three points, namely the path of water 1, the path skirting the woods and pathways of water 2. The methods of taking samples of butterflies conducted by purposive survey method. The mechanical technic of taking samples is done by using nets insects. Analysis of butterfly diversity index obtained diversity index (H') and index of dominance (D). Analysis of butterfly diversity index obtained diversity index (H') for all species, namely 2.29 (medium category). Analysis index of dominance obtained index of dominance for the entire species, namely 0.13 (relatively low). Based on the results of the research, the writer found 16 species (164 individuals) that were included into the four families of Papilionidae, Nymphalidae, Pieridae and Lycaenidae.
The Evidence of Cadmium (Cd) Heavy Metal in South Asian Apple snail (Pila ampullacea) on The Batu Kuta Village Narmada District Widya Septiani; Khairuddin Khairuddin; M. Yamin
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
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.v22i2.2586

Abstract

Waste produced by society has a negative impact on the environment such as waste from agricultural, household, and industrial sector. The study aims to evaluate the content of heavy metal Cadmium (Cd) in rice field snail (Pila ampullacea) as a pollutant indicator in Narmada sub-district, West Lombok. The research method used observation and laboratory. Furthermore, Sampling at six points was conducted with three repetitions. In addition, the heavy metal content of the research sample was analyzed using AAS (Atomic Absorption Spectrophotometry). The result indicated that the average of heavy metal content Cadmium (Cd) per point in rice field snail (Pila ampullacea) in Batu Kuta village, Narmada sub-district ranged from 0.367 ppm – 0.554 ppm. The highest value was found in the rice field at station 2 point 3, while the lowest was in the irrigation canal at station 2 point 1. The average of the analysis on the heavy metal content Cadmium (Cd) per station in rice field snail (Pila ampullacea) with the highest value of 0.481 ppm was found at station 1, while the lowest value of 0.465 ppm was at station 2. It can be concluded that the heavy metal content of Cadmium in snail is an indicator that society activities, especially in agricultural sector, have a negative impact on the environment. Hence, the result of the study is able to be a source of scientific information for environmentally friendly agricultural system management policies, especially in the study site and other location.

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