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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 125 Documents
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Search results for , issue "Vol. 24 No. 2 (2024): April - Juni" : 125 Documents clear
Analysis of the Economic Value of Environmental Services of Mangrove Ecosystem in Cendi Manik, Sekotong District, West Lombok Regency Nuryadin, Rusmin; Fitria, Syawalina; Alim, Sahrul; Wahyudi, Rhojim; Amir, Sadikin; Valentino, Niechi
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.v24i2.5749

Abstract

The area of mangrove ecosystems in West Nusa Tenggara Province continues to decline each year. One of the threatening factors that substantially contribute to such condition is socioeconomic activities of human beings in fulfilling their needs. An effort that can be made primarily to preserve the mangrove ecosystem is to quantify the economic value of environmental services provided by the mangrove ecosystem as a whole, so that the existence and sustainability of the mangrove ecosystem could be maintained. This research aims to calculate the total economic value of mangrove ecosystem services which indicate the four categories of ecosystem services including supporting services, provisioning services, regulatory services and cultural services. The research was carried out using a survey method by collecting data and information from location of this study to obtain actual data regarding the existence of the mangrove ecosystem. The results of the analysis show that the total economic value of mangrove ecosystem environmental services is 963,888,060/year. This value is divided into provider services (supply services) amounting to Rp. 153,002,250, regulatory services (arrangement services) Rp. 598,339,702, supporting services (support services) Rp. 2,243,250, and cultural services (cultural services) Rp. 210,308,857. The magnitude of the total economic value of mangrove ecosystem environmental services can be a reference for the government in determining compensation for services if there is degradation to mangrove ecosystem resources in the area.
Growth of Vannamei Shrimp (Litopeneaus vannamei) in Rearing Media with Different Salinities Scabra, Andre Rachmat; Junaidi, Muhammad; Hafizi, Auliyan
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.v24i2.5904

Abstract

The addition of calcium, phosphorus and magnesium minerals has been carried out separately in vannamei shrimp cultivation activities using fresh water media. Furthermore, the combination of the three types of potassium is expected to mutually fulfill the mineral needs of vannamei shrimp so that their growth becomes more optimal. This research aims to analyze the growth of vannamei shrimp reared in various media with different mineral levels. The treatments in this study were P1 (30 ppt), P2 (20 ppt), P3 (10 ppt), P4 (0 ppt without the addition of minerals), and P5 (0 ppt with the addition of various types of mineral sources). The research results show that the best SGR weight is found in P1 at 12.42%/day. The highest SR value was also obtained at P1, namely 65%. The SR and SGR values at P5 are higher than at P4, but still lower than at P1, P2, and P3. Based on these results, it is known that the growth of vannamei shrimp reared in fresh water media with added minerals has increased compared to vannamei shrimp reared in fresh water media without added minerals, but is still lower compared to the growth of vannamei shrimp reared in water media. sea. Furthermore, research is needed on adding other types of minerals to low salinity vannamei shrimp cultivation media.
The Growth Pattern and Condition Factors of Swanggi (Pracanthus tayenus Richardson, 1846) Landed at Coastal Fishing Port of Lempasing Putri, Septi Malidda Eka; Putriani, Rizha Bery; Delis, Putu Cinthia; Kartini, Nidya
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.v24i2.6316

Abstract

Lempasing Coastal Fishery Port is one of the fishing ports in Lampung Province with one of the catches is Swanggi (Priacanthus tayenus) or local people call it king fish gantang. The purpose of this study was to determine the growth pattern and condition factors of Swanggi (Priacanthus tayenus) landed at the Lempasing Coastal Fishery Port as an effort to manage sustainable fishery resources. This research was conducted in May-August 2023. The method used in this research is the survey method. Sampling was done 8 times with an intensity of 2 weeks. Swanggi samples used are the result of fishermen's catch at PPP Lempasing. The results showed that male and female Swanggi had a negative allometric growth pattern. The condition factor value of male Swanggi in May-August 2023 is 1.0437; 0.9414; 1.01; 1.0057, respectively, while the female Swanggi obtained the average condition factor value is 1.4502; 0.9937; 0.9937; 1.0057. 
Application of Rice Straw Compost and NPK Fertilizer to Increase The Growth of Kale Land (Ipomoea reptans poir) Raksun, Ahmad; Merta, I Wayan; Mertha, Gde
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.v24i2.6391

Abstract

Kale land can grow well in various environmental conditions. Fertilization is one way that can be done to increase the growth of  Ipomoea reptans poir using both organic and inorganic fertilizers. Research on the application of rice straw compost and NPK fertilizer to increase the size of  stems and leaves of Ipomoea reptans poir has been completed in 2023. This research aims to analyze: (1) the effectiveness of using NPK fertilizer on the size of  stems and leaves of Ipomoea reptans poir, 2) the effectiveness of using rice straw compost on the size of  stems and leaves of Ipomoea reptans poir, (3) the effectiveness of the combination of using rice straw compost and NPK fertilizer on the size of stems and leaves of Ipomoea reptans poir. Two factorial design was applied in this research. The results were obtained: (1) the application of rice straw compost was significantly effective in increasing stem height, leaf length and leaf width but could not increase the rate of increase in the number of  kale land leaves, (2) NPK fertilizer treatment had a real effect on increasing the overall growth parameters observed, (3) ) the combined application of rice straw compost and NPK fertilizer did not have a significant effect on leaf width, number of leaves, leaf length and stem height of  kale land.
Carcass Characteristics of Male Peking Ducks with Fermented Yeast (Saccharomyces cereviceae) Culture Pineapple Peel Feed Bulkaini , Bulkaini; Kisworo, Djoko; Wulandani, Baiq Rani Dewi; Fahrullah , Fahrullah; Sutaryono, Yusuf Ahkyar; Sumadi, I Ketut; Ariana, Tirta
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.v24i2.6446

Abstract

The male Peking duck is a type of meat duck that has great potential to be developed as a producer of carcasses and primal carcass cuts. The research was carried out with the aim of finding out the best level of addition of pineapple peel fermented yeast (Saccharomyces cereviceae) culture to the percentage of carcasses and carcass primal cuts of male Peking ducks. The material used in this research was 240 male Peking ducks with an initial weight of 343.90 ± 0.90 g. The ration used contains 16% crude protein, with a metabolic energy (ME) of 2.900 kcal/kg. The cage system used is a battery colony cage measuring 200 cm x 60 cm x 50 cm with 30 plots. Each plot contained eight male Peking ducks which were kept until 8 weeks of age. The research data were analyzed using One Way Anova based on a Completely Randomized Design with a unidirectional pattern and followed by the Duncan Multiple Range Test (DMRT) using the SPSS version 16 program. The research results showed that the treatment with the addition of 10% fermented pineapple peel in the ration (P2) could produce a male Peking duck carcass percentage of 55.52% higher than the P0 treatment (54.94%); P1 (54.11%); P3 (53.85%); P4 (53.61%) and P5 (52.07%), while in primal carcass cuts the highest percentage was found in the chest at 37.17%, followed by the back (22.67%), wings (13.96%), lower thighs (13.72%) and upper thighs (12.43%).  Conclusion: The addition of yeast (Saccharomyces cereviceae) culture fermented pineapple peel at a level of 10% in the ration can produce a higher percentage of carcasses and carcass primal cuts of male Peking ducks compared to other treatments.
Study on Water Quality of Sekadau River Using Pollution Index Method Hardina, Ellan; Wahyuni, Dwiria; Zulfian
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.v24i2.6531

Abstract

One of the leading causes of declining water quality is contamination from human activities. The Sekadau River serves as a primary water source for the residents of Sekadau Regency, facilitating bathing, laundry, kitchen equipment cleaning, and freshwater fish cultivation. The objective of this study is to evaluate the water quality of the Sekadau River, comparing it against Class II standards as stipulated in Government Regulation No. 22 of 2021 on Environmental Protection and Management. Subsequently, pollution levels in the Sekadau River at the measurement point were determined using the Pollution Index Method (PIM). The research findings reveal that the pollution index values for 2018, 2022, and 2023 fall within the lightly polluted category. Conversely, in 2019, the water quality of the Sekadau River exhibited improvement. It complied with water quality standards per the Minister of Environment and Forestry Decree No. 115 on Quality Status Determination Guidelines. Consequently, the Sekadau River remains suitable for bathing, laundry, freshwater fish cultivation, and other purposes requiring water of the same quality as its designated use. However, considering the increasing pollution trends in 2022 and 2023, appropriate measures are necessary to prevent the Sekadau River from becoming more polluted.
Optimizing The Effects of Auxin and Cytokinin Combinations on Shoot and Root Induction of Dendrobium mussauense Noli, Zozy Aneloi; Nur, Fauziah; Suwirmen
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.v24i2.6637

Abstract

Dendrobium mussaense, an orchid species of high ornamental value, was subjected to experimental treatments involving the addition of combinations of auxin and cytokinin, namely 2,4-D (2,4-dichlorophenoxyacetic acid) with BAP (6-benzylaminopurine) and 2,4-D with TDZ (thidiazuron). The research aim was to evaluate their effects on the emergence time of shoots and roots. The method used an experiment design with seven treatments. Among the treatments, the most effective was 2,4-D at a concentration of 1 mg/L combined with 0.75 mg/L of BAP. This treatment resulted in the shortest time for both shoot and root emergence. These findings underscore the importance of optimizing hormone combinations for efficient shoot and root induction in D. mussaense, providing valuable insights for orchid propagation and cultivation practices.
Estimation of Yield Loss Due to Striped Disease in Peanut Plants in Palopo City, South Sulawesi Kasim, Niken Nur; Prihatin, Prihatin; Sukmawati, Sri; Wiridannisaa, Nurul
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.v24i2.6641

Abstract

Palopo City is one of the peanut production centres in South Sulawesi. However, from 2008 to 2020, groundnut production in Palopo City has decreased. Recently, in South Sulawesi, it was reported that peanut stripe virus infection has spread widely and evenly in peanut plants. Symptoms of stripe disease include dark green and light green leaf colour, chlorosis, and can cause stunting. This study aims to determine the estimation of yield loss caused by stripe disease in peanut plants in Polopo City, South Sulawesi. This research was conducted in a farmer-owned groundnut field located in Purangi Village, Sendana Subdistrict, Palopo City, South Sulawesi, from January to May 2023. Parameters observed were plant height, disease severity and incidence, and yield loss. Observations were made 6 times on plants aged 4 to 9 weeks after planting. The results showed that the symptoms of striped disease showed that the growth of peanut plant height was inhibited, and caused a decrease in the number of pods, pod weight, and pod number. Disease severity increased to 57.2% and disease incidence to 46.6%. Yield loss caused by stripe symptoms in peanut plants was 43.78%, indicating that high disease severity and incidence can reduce yield.
In vitro Propagation of Singgalang Cabbage (Brassica oleracea var. capitata L.) on Murashige and Skoog Modification Media for Preservation Purpose Sari, Maya; Idris, Muhammad
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.v24i2.6651

Abstract

Singgalang Cabbage is one of the local cabbage cultivated on the foothills of Mount Singgalang, West Sumatra. Recently, the existence of this cabbage has decreased, so conservation and preservation efforts need to be carried out. This research was conducted to develop method for in vitro propagation and preservation of singgalang cabbage. The Murashige and Skoog (MS) were used as basal media with two experimental stages, i.e., shoot initiation with 6-Benzylaminopurine (BAP), and root induction and plantlet preservation with modification of MS media. The nodal and shoots were used as explants. The results showed that increment of BAP concentrations gave a significant effect on shoot initiation after 60 days of treatment. MS media-enriched with BAP 2 mg/L gave significant increment of shoots (4 shoots/nodus) and leaves (11.67) numbers when compared to other treatments. For root induction and plantlet preservation, it was found that the earlier of root formation was observed in modification of MS media at ½ and ¼ strength. Meanwhile, MS media at ⅛ strength was observed to be better media for plant height increment (4.75 cm) when compared to other treatments. It was found that the plantlets survived and grew well after 120 days under in vitro condition.
Antioxidant and Anti-inflammatory Potential of Sargassum sp Extract in Lotion Preparations Safitri, Dwi; Yuliani, Dina; Aldi, M Fardinal; Julfika, Titi; Larasati, Chandrika Eka; Rahman, Ibadur; Jefri, Edwin
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.v24i2.6660

Abstract

Sargassum sp. is a type of brown algae found in Indonesian marine waters with great potential in the food and pharmaceutical industries. There is antioxidant and anti-inflammatory potential in Sargassum sp. extract so that it makes this type utilised as a lotion preparation. It is necessary to know the potential of Sargassum sp. extract in making lotions. This research uses extraction method to produce Sargassum sp. extract with organic solvent extraction technique, namely alcohol. In addition, the emulsion method was used in the manufacture of lotion preparations. Furthermore, secondary metabolites and anti-inflammatory (irritation) tests were conducted. In addition, the lotion preparation can be evaluated by conducting organoleptic, pH, and homogeneity tests.  The results showed that the Sargassum sp. extract contained significant antioxidant compounds, as indicated by a decrease in DPPH absorbance. Sargassum extract contains alkaloid, flavonoid, saponin, and tannin. In addition, lotion preparations containing Sargassum sp. extract also showed a significant decrease in pro-inflammatory cytokine expression in skin cells exposed to UVB radiation. In addition, the irritation test showed negative results with a safety level without causing irritation to the skin. These findings indicate the potential of Sargassum sp. extract in producing lotion preparations with antioxidant and anti-inflammatory effects that can contribute to skin protection from oxidative damage and inflammation.

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