Jurnal Biologi Tropis
ISSN / EISSN : 1411-9587 / 2549-7863
Current Publisher: Universitas Mataram (10.29303)
Total articles ≅ 294
Latest articles in this journal
Jurnal Biologi Tropis, Volume 21, pp 361-367; doi: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 427-433; doi: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 368-382; doi: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; doi: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; doi: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 383-392; doi:10.29303/jbt.v21i2.2619
Asteraceae is the second largest plant family in the world. The family member has reached 227 species in Java. However, there is no current record of wild Asteraceae around local village within Gunung Halimun-Salak National Park. This study is to provide current Asteraceae species data and the threat for the conservation area. Explorative method has been conducted in 6 sites. The result shows that there are 20 species found with the tribes composition are 8 Heliantheae, 6 Eupatorieae, 3 Senecioneae, 1 Astereae, 1 Cichorieae, and 1 new record Vernonieae in Java. Key identification for species are provided and the new record has been described. Most species categorized as introduced with several other categorized as invasive alien species. In conclusion, numbers of Asteraceae family has been recorded with some potential ivansive threat in Gunung Halimun-Salak National Park. Regular population control and treatment are recommended in order to protect native species in the conservation area.
Jurnal Biologi Tropis, Volume 21, pp 393-402; doi:10.29303/jbt.v21i2.2607
Indonesia, as a mega biodiversity country, has various types of wild plants. Sempolan Village, part of Jember Regency, has fertile land to support the growth of a wild plant. This research investigates wild plants used as food sources by indigenous peoples in Plalangan, Sempolan Village. This study also conducts data on how wild plants were cooked, served, and enriched by nutrition notice. The method is qualitative descriptive analysis obtained from observation, interview, documentation, and literature study. So, research results found 26 species and grouped them into 19 families. In addition, the locality of these species is in yards, fields, and roadsides. The habitus identified is an herb (77%), tree (11%), shrub (8%), and liana (4%). Those foods categorize into 1) carbohydrates sources, 2) vegetables, and 3) fresh fruits. The carbohydrate sources mostly served as a side dish, compote, and flour by stewing and frying. The vegetables include 18 species served as complements of the main menu, which cooked for soup, curry, stir fry, ointment, and pothok. Fresh fruits comprise of 4 species were directly consume or make a salad. Furthermore, all food resources contain essential nutrients like vitamins, macro and micro minerals, and phytochemicals that are important for society's growth and healthy lives. Finally, Information on wild plants as a food source will increase food diversification as well as dishes.
Jurnal Biologi Tropis, Volume 21, pp 403-411; doi:10.29303/jbt.v21i2.2582
Macro algae is a part of marine plants whose whole body is called the "thallus". Macro algae are widespread in tropical and sub-tropical waters. The purpose of this study was to determine the composition of the macro algae species, the width of the micro-habitat niches, and the overlapping of the micro-habitat niches in the intertidal zone of the waters of Sibu Island, Oba Utara District, Tidore Islands City. The data was collected using survey method using belt transects and squares measuring 1x1 m2 which are placed systematically in zigzags along the tansek belt. In this study, 20 species of macro algae were found in the waters of the island of Sibu, consisting of Halimeda macroloba, Halimeada opuntia forma chordata, Halimeda incrassata, Halimeda opuntia forma renschii, Chaetamorpha sp, Eucheuma cottonii, Sargassum duplicatum, S.polycestum, Turbina ornata, T. conoides, Padina boergesenii, Dictyota dichotoma, Amphiroa fragilissima, Acanthopora spicifera, Eucheuma denticulatum, E. spinosum, Glacilaria salicornia, Hypnea nidulans, Galaxaura apiculata. The results of the analysis of the width of the recesses showed that the macro algae species with the largest recess width were Eucheuma denticulatum with a value of 0.905, while Galaxura apiculata had the narrowest recess widths with a value of 0.200. Furthermore, based on the results of overlapping analysis of microhabitat niches, it shows that the overlap of microbaitate niches is quite large by Sargassum polycestum against Galaxaura apiculata with a value of 0.337, while the lowest was carried out by Halimeda macroloba against Galaxaura apiculata, Halimeda opuntia forma chordata against Galaxaura apiculata with a value of 0.337, while the lowest was carried out by Halimeda macroloba against Galaxaura apiculata, Halimeda opuntia forma chordata against Galaxaura apiculata, Eucheuma spinosum against Galaxaura apiculata with a value of 0.000.
Jurnal Biologi Tropis, Volume 21, pp 353-360; doi:10.29303/jbt.v21i2.2567
Ridan (Nephelium mangayi) is one of Nephelium (Sapindaceae) member distributed in Riau Province. This underutilized edible plant is commonly found as wild species, and poses three different fruit morphologies (oval, asymmetric and round shaped fruit). The phytochemical contents of these fruit species had not been reported. This study aimed to identify the phytochemical contents of fruit parts (peel, aril and seed) of three different fruit shapes of N, mangayi (oval shaped fruit, asymmetric fruit and rounded fruit) from Riau Province. A total of six secondary metabolite groups were tested (alkaloid, terpenoid, steroid, flavonoid, saponin dan tannin), using qualitative analysis based on the presence of precipitation (alkaloid), the change of mixture color (steroid, terpenoid, flavonoid and tannin) and soapy foaming substance for saponin. The result showed that peels of Ridan (N. mangayi) gave the highest phytochemical contents (alkaloid, terpenoid, flavonoid, saponin and tannin.). Terpenoid and saponin were found in peel, aril and seed of three different fruit shapes. This study concluded that the phytochemical contents of three fruit shapes of Ridan (N. mangayi) varies among the different shapes of fruit. This result of this study provide the first information of bioactive profile of N. mangayi form Riau Province.
Jurnal Biologi Tropis, Volume 21, pp 324-335; doi:10.29303/jbt.v21i2.2557
Plants have an essential role in people's lives because of their benefits and properties, such as for medicinal properties. In Landak District, only limited studies on medicinal plant had been carried out. This study analyzes the species of medicinal plants used by the Dayak Kanayatn tribal traditional healers in Tonang Village, Sengah Temila District, Landak Regency. The sampling used the snowball sampling technique. The results found that traditional healers of Dayak Kanayatn in Tonang Village used a total of 60 species belong to 36 families. The most utilized families (8.47%) are Zingiberaceae and Asteraceae. The extensive use of plant habitus is herbs (41,67%). Leaves are the most dominant plant part used (44.78%), while the highest processing method was boiled (39.74%). The highest form of use was drinking (38.67%), the most common location of plants was in the yard (67.74%), the highest plant status is cultivated (52%), and the highest form of the potion is in the form of a mixture (72%). The result shows that the traditional healers in the Dayak Kanayatn community in Tonang Village, Sengah Temila District, Landak Regency, still use medicinal plants to overcome health problems and treat disease.