Jurnal Biologi Tropis
ISSN / EISSN : 1411-9587 / 2549-7863
Published by: Mataram University (10.29303)
Total articles ≅ 309
Latest articles in this journal
Jurnal Biologi Tropis, Volume 21, pp 496-500; https://doi.org/10.29303/jbt.v21i2.2514
More than 6000 plant species, native and introduced, have been recorded in Java that includes the Costaceae family. In the last few years, several additions of alien Costus species have been published from Java. In 2019, a set of specimens of wild Costus sp. was collected from Institut Pertanian Bogor, Bogor, West Java Indonesia. This species is not similar to any previously recorded wild Costus in Java. Therefore, this research aims to identify the collected specimen and provide a taxonomic account for the species. The morphological description was made from the living plant and the collected herbarium. The description was used to identify the species, supported by field notes and photographs. The result showed that the recently collected specimen belongs to Costus dubius. Before this finding, the plant was only known in cultivation in the Bogor Botanical Garden. Therefore, this finding represents the first record of the adventive population of C. dubius in Java and increases the number of wild Costus in Java into seven species. Further researches on Costus in Java are suggested such as the ecological impact due to the presence of several non-native species.
Jurnal Biologi Tropis, Volume 21, pp 427-433; https://doi.org/10.29303/jbt.v21i2.2629
Gyrinops versteegii is an endemic plant in eastern Indonesia that produced agarwood with high quality and economic value. This plant has been threatened by overexploitation which leads on decreasing in the natural population. This research aimed to induce in vitro callus formation to support the sustainable utilization of G. versteegii, which in the end, may support plant productivity. Callus induction was investigated using cotyledon and cultured on MS medium supplemented with several combination of plant growth regulators. The observations were done for the number of explants turned into callus and the duration for the first callus formation. The results showed that combination of 3 mg/L NAA + 0.5 mg/L BAP was recorded as the best combination for callus induction (63.63%). Callus with friable structure and bright color are obtained within nine days of incubation and showed the characteristic of embryonic callus. This result is expected to give a significant opportunity to conserve the natural population of G. versteegii.
Jurnal Biologi Tropis, Volume 21, pp 456-469; https://doi.org/10.29303/jbt.v21i2.2666
One of the cultural characteristics of people in developing countries is that traditional elements are still dominant in everyday life. These activities include the use of plants as medicinal ingredients by various ethnic groups or groups of people living in rural areas, one of which is the Mbojo Tribe, Ndano Village in Madapangga, Bima Regency, NTB. This study aims to identify the types of medicinal plants and to describe the local wisdom of the Mbojo Tribe in Ndano Village regarding the use of medicinal plants around the Madapangga Nature Tourism Park (TWA). The results of this study are expected to contribute to the development of medicinal plant research based on local wisdom for the sustainable management of TWA Madapangga. This research is descriptive exploratory. Data collection techniques in the field by means of observation, interviews and documentation. Selection of informants for interviews using purposive sampling and snowball sampling methods. Qualitative and quantitative data were analyzed descriptively related to the aspects that have been determined. The results obtained 26 species of medicinal plants that are best known and often used by the Mbojo Tribe, Ndano Village. Utilization of this medicinal plant is used to cure diseases which amount to 31 types of diseases. Based on the habitus group, the tree level is the most widely used as medicine. Meanwhile, the part (organ) of the plant that is most widely used is the leaf. The people of Ndano Village still use a simple way of concocting medicinal plants, namely by mashing (mashed, grated, kneaded) and boiled. The use of drugs, generally done by drinking, smeared and dripped. The results of this study are very useful for the development of medicinal plant research based on local wisdom for the sustainable management of TWA Madapangga.
Jurnal Biologi Tropis, Volume 21, pp 361-367; https://doi.org/10.29303/jbt.v21i2.2552
Catfish was one of the most popular consumption fish in Indonesia. Increasing the production of catfish farming by means of super intensive cultivation has a negative impact on the quality of the aquaculture environment which in turn can have an impact on fish health. Biofloc technology was an alternative that can be done to solve the problem of aquaculture waste. In fact, it could provide more benefits because besides being able to reduce inorganic nitrogen waste also provide additional feed for cultured fish so that it can increase growth and feed efficiency. This study aims to evaluate the growth performance of catfish (Clariassp.) In biofloc-based super intensive cultivation with the addition of different commercial probiotics. This research will be conducted for 5 months. The research was conducted in an aquarium in the form of an aquarium measuring 90 × 40 × 50 cm filled with 100 L. The treatment given was the addition of commercial probiotics in the culture medium with the biofloc system and fermented pellet feed with various commercial probiotics, namely commercial probiotic I, commercial probiotic II. , commercial probiotic III, positive control (biofloc culture media and without the addition of commercial probiotics), and negative control (without biofloc). Each treatment was repeated three times. Specific data growth, survival (SR), feed conversion ratio (FCR) and quality were statistical analysis with one-way analysis of variance. The results showed that the best growth performance of catfish using the biofloc culture system produced in this study was shown in PK3 treatment with a survival rate of 93.33%, a specific growth rate of 6.60, and a feed conversion ratio of 0.92.
Jurnal Biologi Tropis, Volume 21, pp 526-533; https://doi.org/10.29303/jbt.v21i2.2725
Seagrass meadows or seagrass beds are one of the important components in coastal ecosystems. Seagrasses provide ecosystem services for various biota that live in it as well as components of the surrounding coastal ecosystems. The Sancang Nature Reserve is one of the coastal areas that has seagrass communities, and seagrass observation data is needed for reference to conservation strategies. This study aims to determine the condition of the cover and the structure of the seagrass community that fills the littoral zone of the Sancang Nature Reserve using the quadratic transect method, which was conducted from March 17 – 21, 2021. The data collected were seagrass species, species frequency, species cover and total cover, and the importance value index of species. Observations were made at 3 stations with an area of 100 m2 each along Ciporeang Beach, at each station 30 square transects with a size of 50 cm were placed, with 1 square transect divided into 25 grids measuring 10 cm. As well as the observation of environmental physical and chemical indicators. The results showed that the seagrass community in the research sites were overgrown by species Cymodocea rotundata and Thalassia hempricii which had a cover condition in the rich category with a percentage of 61.09%. Species densities were 117 i/m and 679 i/m, species closures were 36.95% and 25.63%, and the importance value index of species were 1.49 and 0.54. The difference was significantly influenced by physical indicators such as substrate structure and current velocity, while the chemical indicators at each station did not show a significant difference. Nutrient content data in the substrate at each station is needed to get more detailed conclusions about the factors that affect seagrass cover on the Sancang coast.
Jurnal Biologi Tropis, Volume 21, pp 368-382; https://doi.org/10.29303/jbt.v21i2.2614
Systematics of honey bees has developed rapidly. Several studies have attempted to infer the kinship between each group of honey bees. One approach is the use identification and phylogenetic analysis using combination of morphology, morphometric, and molecular characteristics data. There are three species of honey bees found in the Central Sulawesi, namely Apis dorsata, A. cerana and A. nigrocincta. The last two species mentioned have similar biological properties, so they present some difficulties to identify especially with morphological characters only. The results showed that the two Apis bee species analyzed in this study, had similar morphological features compared to specimens of the same species from the other regions, whereas the morphometry of the two had variations in size compared to the same species that have been reported in other regions. The variations in the size or morphometric character of worker bees, both those with a larger or smaller size, possibly being a form of morphological adaptation to different environmental conditions. The CO1 and 16S Mitochondrial DNA sequencesof A. cerana and A. nigrocincta from this studywere similarto thesequences of the same species in the GeneBank’s database. This study provide preliminary data contributing to the preservation and utilization of one of Indonesia’s important biodiversity resources.
Jurnal Biologi Tropis, Volume 21, pp 416-426; https://doi.org/10.29303/jbt.v21i2.2638
People use medicinal plants to treat various diseases, one of which is gastric disorders. The study aims to analyze the use of medicinal plants to overcome gastric disorders by the Dayak Muara tribe in Kuala Dua Village, Sanggau Regency. The sampling method was purposive sampling, with the number of respondents was 10% of the total number of households in Kuala Dua Village (91 respondents). The information regarding the medicinal plants used by the Dayak Muara tribe to overcome gastric disorders such as diarrhea, intestinal worms, nausea and vomiting, constipation, gastric, flatulence, and stomachache was collected. Furthermore, data obtained analyzed for the use-value (UV), informant consensus factor (ICF), and fidelity level (FL). The Dayak Muara tribe in Kuala Dua village, Kembayan District, has used 17 species of medicinal plants to overcome gastric disorders. Curcuma longa is the plant with a high use value or UV (0.96), followed by Psidium guajava (0.89) and Zingiber officinale (0.45). The highest value of informant consensus factor or ICF includes the diseases category of diarrhea (0.98), gastric, stomachache, nausea, and vomiting, each of which has an ICF value (0.96), constipation (0.94), intestinal worms and flatulence (0.88). The plants with the highest fidelity level (FL) are Allium sativum, Cymbopogon citratus and Centella asiatica for gastric (100), Areca catechu for constipation (100), Moringa oleifera, and Theobroma cacao (100) for stomachache.
Jurnal Biologi Tropis, Volume 21, pp 412-415; https://doi.org/10.29303/jbt.v21i2.2639
One family of plants that are source of bioactive chemicals is the Moraceae.Artocarpus is the main genus of the Moraceae. Several species of the genus Artocarpus have been isolated their secondary metabolites. The main fractions obtained from the VLC are analyzed again by TLC. Fractions that have same spots (Rf) pooled. Purification process on main factions are done repeatedly by radial chromatography. Flavonoid is the most found from Artocarpus plant. Dihydrobenzoxanthone is one of flavonoid derivatives which is successfully isolated from Artocarpus. Dihydrobenzoxanthone is only formed from the flavone with ring B which isoxygenated with pattern of 2', 4' and 5'. Students can be learned dihydrobenzoxanthone’s Artocarpus by laboratory activities.
Jurnal Biologi Tropis, Volume 21, pp 470-479; https://doi.org/10.29303/jbt.v21i2.2696
One of the most unique plant groups in the world is carnivorous plants. Indonesia is home to many species of this plant group. Nepenthaceae, represented by single genus Nepenthes, is relatively well known, but the others are not. A literature study and several field trips were conducted to give a summary of the diversity and the potential uses of the non-Nepenthes carnivorous plants in Indonesia. Three families with a total number of 29 species have been reported for Indonesia, namely Lentibulariaceae (20 species), Droseraceae (8 species), and Byblidaceae (1 species). One species, Aldrovanda vesiculosa is listed as Endangered based on IUCN Red List. The results reveal that several species possess ethnobotanical and medicinal uses as well as other potential such as in phytoremediation and nanoparticle biosynthesis. Several bioactivities have been reported such as anticancer, antihypertensive, antitumor, antioxidant, antibacterial, or even hepatoprotective. Among the most important bioactivity is anticancer which is supported by the presence of secondary metabolites named plumbagin, which so far has been found in three species. Our result indicates that this plant group is highly potential and warrants further studies and or development.
Jurnal Biologi Tropis, Volume 21, pp 441-447; https://doi.org/10.29303/jbt.v21i2.2698
Community of mangrove in the Bay of Sekotong, West Lombok was studied to know the species composition, individual density of each species, and percentage covering of mangrove canopy. Total 28 plots of 10 m x 10 m were set in 9 transects in 5 stations. Photographs of canopy covering and mangrove community composition were analyzed by using software ImageJ and template spreadsheet 10x10, the new version of March 2018. The community of mangrove of Sekotong bay, West Lombok consists of 8 species, 5 genera, and 4 families. Rhizophora apiculata & Rhizophora stylosa were recorded in seven of nine transects (78% of transect). Ceriops tagal was a species that was also recorded to have the highest density (3700 trees/ha) in transect SKTM02B. The average density of the mangrove sapling category was higher than the mangrove tree category. The three highest covering percentages of canopi mangrove community took place in transects SKTM01A, SKTM01B, and SKTM04T.