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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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New Data of Morphological Variation in Microhyla gadjahmadai Atmaja et al., 2018 (Anura: Microhylidae) from West Sumatra Shinta Triana Putri; Rijal Satria; Reki Kardiman; Fitra Arya Dwi Nugraha
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.4962

Abstract

Microhyla gadjahmadai was first described by Atmaja et al. in 2018. For the newly described species category, there is not much information explaining this species and there has been no further research after this species was described, especially in West Sumatra. This study aims to provide information on variations in the morphological characteristics of M. gadjahmadai in West Sumatra, through morphological and morphometric analysis of 8 samples (1 adult male and 7 adult females) found in Puncak Anai (Dempo Anailand), Kanagarian Guguak, District 2x11 Timber Planting, Padang Pariaman Regency, West Sumatra. This study used the Visual Encounter Survey (VES) method. The result of the present study shows that no significant morphological differences between the holotype and paratype of Microhyla gadjahmadai and other specimens from West Sumatera. However, the present study reported that the morphological variations of this species.
Evaluation of Chili Nazla IPB as An Ornamental Chilli for Releasing Variety Abdul Hakim; Muhamad Syukur; Sobir; Awang Maharijaya; Syarifah Iis Aisyah; Dewi Sukma; Arya Widura Ritonga; Muhammad Ridha Alfarabi Istiqlal; Sulassih; Bagas Akmala Putra; Arum Sholikhah
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.4976

Abstract

Chili (Capsicum annuum L.) exhibits a wide range of variations in terms of crown shape, fruit shape, fruit color, leaf color, leaf shape, and taste. While chili is commonly known as a food plant, it also serves as an attractive ornamental plant. Specifically, ornamental chili plants are desired to possess specific traits, such as compact growth, high fruit yield, and a variety of fruit colors within a single plant. This study aims to comprehensively describe the quantitative and qualitative superiority of the Nazla IPB variety in terms of its characteristics. The research was conducted in the Leuwikopo Darmaga experimental garden's greenhouse, located in Bogor, utilizing a randomized complete block design with four replications. The Nazla IPB variety, which is an open-pollinated (OP) cultivar, stands out due to its short plant height, ranging from 17.83 to 26.42 cm, making it highly suitable for ornamental purposes. Furthermore, the chili plants of the Nazla IPB variety possess a compact crown shape, enhancing their visual appeal, coupled with their short stature (ranging from 21.83 to 26.69 cm). The primary distinguishing features of the ornamental chili variety Nazla IPB include: 1) the color of the leaves, which transition from green (Green 137 C) to purple (Purple N186 A); 2) the black color of the young chili fruit (Black 203 A); 3) the fruit shape of Nazla IPB, which can be described as moderately triangular; and 4) the fruit undergoes a color transformation from black to dark green and finally to red. Nazla IPB has potential to serve as an attractive decorative plant option.
Can Landuse Intensification Decrease Soil Carbon Stock in Upstream Sumber Brantas Watershed? Anita Dwy Fitria; Syahrul Kurniawan
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.4979

Abstract

Upper Brantas watershed with volcanic ash soil has potentially high carbon stock. However, land-use intensification in the upstream watershed area is the potential deterioration of soil quality, mainly degradation. The study aimed to assess the effect of land-use intensification in the upper Sumberbrantas watershed on soil carbon stock. The study was conducted in the upper Sumber brantas watershed, particularly in Kali kungkuk micro watershed, Batu City, East Java – Indonesia. Soil samples were taken at 0-30 cm and 30-100 cm on 4 land uses (i.e., forest, agroforestry, cropland, and shrubland) with three replications. The variable measured include basal area, standing litter mass, soil bulk density, and soil organic C. The results showed that land-use intensification strongly impacted soil carbon stock at 0-30 cm and 30-100 cm depth of soil. The soil carbon stock degradation of around 60% to 67% in the intensive cropping systems and in the post-cropping cultivation was covered by a shrub as compared to the forest soil, especially at a depth of 0–30 cm. The correlation value (p<0.05) between the basal area (0.65) and standing litter mass (0.42) on soil carbon stock, especially at a depth of 0-30 cm, indicated that the basal area and standing litter mass increase soil carbon stock. The result was in line with the soil bulk density by ANOVA test at a depth of 0-30 cm and 30-100 cm showing the effect (p<0.05) where intensive land use consisting of treeless (i.e., cropland and shrubland) increases the soil bulk density.
Biological Agent Trichoderma asperellum and Its in Vitro Inhibitory Activity Against Mango Fruit Rot Pathogens Gilang Vaza Benatar; Yeyet Nurhayati; Umi Kulsum
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.4982

Abstract

Diseases are one of the major challenges in crop production which can lead to significant economic losses. Ironically, while having multiple negative impacts, synthetic chemical pesticides are considered the main strategy in tackling plant diseases. Trichoderma asperellum is one of the potential fungal species that can inhibit numerous plant diseases. This study reconfirmed the morphological characteristics of Trichoderma isolates obtained and identified it by molecular techniques. In addition, the inhibitory activity of the isolates was tested in vitro against the mango pathogens Colletotrichum asianum and Diaporthe pseudophoenicicola. The results showed that isolate T4 was identified as Trichoderma asperellum. Isolate T4 was able to inhibit C. asianum and D. pseudophoenicicola by 28.19% and 15.64%, respectively. Therefore, this isolate can be used as a biological agent to control plant pathogens in an environmentally friendly, sustainable manner, and as an alternative to synthetic chemical pesticides.
Morphology, Morphometry, and Nest Structure of Tetragonula biroi (Hymenoptera: Meliponini) In Central Sulawesi Sitti Nur Fadhilah; I Made Budiarsa; Masrianih; Fatmah Dhafir; Achmad Ramadhan; Manap Trianto
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.4985

Abstract

Stingless bees are social bees that live in colonies. Indonesia has a variety of stingless bee species that can be identified based on morphological, morphometric and nest structure characters. This study aims to describe the morphological, morphometric and nest structure characteristics of Stingless bee Tetragonula biroi from Sigi Regency. This study used the roaming method to find samples in nature, with a purposive sampling technique. Obtained morphological, morphometry and nest structure data were analyzed using the Principal Component Analysis (PCA) method with PAST4 software. The morphological characters of the worker bee Tetragonula biroi have a dominant black body, blackish brown abdomen, antennae with 11 flagellomeres, black thorax, black hair standing on the mesoscutum and mesoscutellum, brownish black mandibles, with 5 hamuli. The most dominant character in the formation of seven groups of stingless bees in this study, namely Hamuli Number (HN), Fore Wing Length (FWL), and Length of Forewing Including Tegula (WL1). The nest entrance hole of T. biroi is elliptical in shape with a width of 7.1 cm and a height of 2.8 cm and is light brown in color. The internal structure of the nest of T. biroi consists of honey cells, pollen cells and stem cells. The existence of size differences in the same specimen and from different places, can be influenced by several environmental factors and is also a form of morphological adaptation.
Amplification of The GAPDH Gene from The Urine eDNA of Sumatran Rhino in Sumatran Rhino Sanctuary, Way Kambas National Park Priyambodo Priyambodo; Chicka Refina P. Putri; Elly L. Rustiati; Yeyen Kurniawati; Danisworo Zulkarnain; Dian Neli Pratiwi; Zulfi Arsan; Giyono Giyono; Ganis Mustikawati; Vindo R. Pertiwi; Sukatmoko Sukatmoko; Eko A. Srihanto; Enny Saswiyanti
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.4989

Abstract

Profiling the genetic character of each individual sumatran rhino is important in order to maintain individual viability and genetic variability of Sumatran rhinos. Non-invasive sampling is needed to minimize the disturbance of individual sumatran rhinos, this is due to the solitary character of sumatran rhinos and tend to be afraid to interact with humans. Until now, non-invasive sampling of sumatran rhinos in Way Kambas National Park (WKNP) has only been done through the source of the puddle. This study aims to amplify the GAPDH gene from sumatran rhino environmental DNA (eDNA) sourced from urine. Urine sampling was carried out on four of the eight sumatran rhino individuals in WKNP. DNA extraction of four sumatran rhino urine samples was carried out with reference to the DNeasy® Blood & tissue kit extraction protocol. Amplification of eDNA extraction results was carried out by polymerase chain reaction (PCR) using GAPDH primers. Visualization of extraction and amplification results from four individual sumatran rhinos at TNWK was tested qualitatively with 1% agarose gel electrophoresis. Electrophoresis results showed positive results after amplification of four individual sumatran rhino urine samples at sizes between 100-200bp. This study successfully amplified the GAPDH gene from four sumatran rhino individuals in WKNP based on qualitative tests. In further conservation efforts, it is necessary to explore eDNA extraction from other potential sources.
Potential of Compost and Bio Fertilizer Combination in Improving Growth and Yield of Red Curly Chili Indra Permana; Leny Yuliyani; Panji Rahmatullah; Indra Ardiansyah; Tirta Kumala Dewi; Entis Sutisna
Jurnal Biologi Tropis Vol. 23 No. 3 (2023): July - September
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.v23i3.5004

Abstract

Red curly chili production in Indonesia is currently falling short of expectations. The objective of this research was to evaluate the affectivity of bio fertilizer and compost combination in increasing growth and yield two varieties of red curly chili in Rancamaya, Bogor. Split plot design was used as an experimental design with different variety of red curly chili (OR Twist = V1 and Kencana = V2) as main plot and fertilizer (A = Control without chemical fertilizers + Compost + POH, B = 50% Chemical Fertilizer + Compost + POH, C = 75% Chemical Fertilizer + Compost + POH, D = 100% Chemical Fertilizer + Compost + POH, E = 100% Chemical Fertilizer + manure, F = 100% Chemical Fertilizer) combination as sub plot. The collected data was analysed by using ANOVA with 5% of significancy, a further test is performed using duncan mutiple range test. OR Twist variety showed the highest growth performance on plant height with 26.4 cm (21 DAP), 56.3 cm (35 DAP), and 82.8 cm (DAP) and leave number by 86.8 and 285 leaves at 35 and 39 DAP. The highest cumulative yield of red curly chili was resulted by OR Twist variety from 1st until 5th harvesting period. OR Twist variety and 50% chemical fertilizer treatment with the addition of compost and POH was the best combination in increasing average fruit weight and cumulative of red curly chili at Rancamaya, Bogor.
The Effect of Moist Feeding with Different Dosages of Probiotic on the Growth of Sand Lobster (Panulirus homarus) in Floating Cages Sumiati; Muhammad Junaidi; Andre Rahmat Scabra
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4275

Abstract

Lobsters are carnivorous (meat-eating) animals, one of the main types of feed used in lobster cultivation is trash fish. Trash fish has a protein content of 84.67% on dry weight and 18.78 on wet weight. The purpose of this study was to determine the growth of sand lobsters (Panulirus homarus) by providing moist feed and adding different doses of probiotics. This study used the RAL method (completely randomized design) with 6 treatments and 3 replications. The study was conducted for 60 days using sand lobsters measuring 3 cm in length and weighing 2 grams/head, then reared in KJA. The results showed that the use of wet feed with the addition of probiotics in this study had a significant effect on the growth of sand lobsters. The best probiotic dose obtained was 3% in the P2 treatment (wet feed + 3% probiotics). The absolute weight and length are 91.23 grams and 4.19 cm; Specific gravity and length 1.74 grams and 1.46 cm; SR of 81.33%; FCR of 7.60 ; Feed efficiency 91.30%; and protein retention of 28.86%. The growth of sand lobsters continued to decline along with the high doses of probiotics given. Giving probiotics with different doses is thought to affect the value of protein in feed. Laboratory test results showed that the protein value continued to decrease along with the high doses of probiotics given. The author suggests using different types of probiotics to determine the type and effective dosage for the growth of sand lobsters.
Community Structure and Carbon Content of Mangroves in the Tanjung Batu Sekotong Area in the Middle of West Lombok Novia Indra Anggraini; Didik Santoso; I Gde Mertha
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4851

Abstract

The purpose of this research was to determine the community structure and the amount of carbon content and mangrove uptake in the Tanjung Batu Sekotong area, Central Lombok, West Lombok. This type of research is descriptive research. This research was conducted in the Tanjung Batu Sekotong area, Central Lombok, West Lombok. The variables observed were individual mangrove species, mangrove height and trunk diameter at breast height. Then the data obtained were analyzed for density, frequency, cover area, important value index, diversity index, biomass and carbon content. Collecting data on mangrove plant communities used a combined method, namely line and square transects. The research results obtained found 6 species, namely Avicennia alba, Avicennia marina, Rhizophora Apiculata, Rhizophora mucronata, Rhizophora stylosa, and Sonneratia alba. Carbon content and carbon absorption of mangroves in the Tanjung Batu Sekotong Tengah Region, West Lombok. The total carbon content of the tree category is 34.4246 tons C/ha, an average of 5.7374 tons C/ha and the sapling category with a total of 14.4312 tons C/ha, an average of 4.1232 tons C/ha. Mangrove carbon uptake in the tree category with a total of 126.3381 tons C/ha, an average of 21.0564 tons C/ha and mangrove absorption in the sapling category with a total of 52.9625 tons C/ha, an average of 8.8271 tons C/ha.
Species Compotition of Foraminifera Benthos in The Intertidal Coastal Water Of Klui Beach North Lombok Laila Nurul Safitri; Imam Bachtiar; Lalu Japa; Muchlis
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4858

Abstract

Foraminifera can be utilized as a sign of ecological changes, so it is vital in the administration of coral reefs. The purpose of this study was to determine: the species composition of benthos foraminifera, substrate cover of habitat and diversity index, uniformity index, and dominance index species of benthos foraminifera. The method used in this research was systematic sampling, where the sample was systematically taken by making three pairs of squares on each transect so that 18 points were obtained, or 2700 samples. The four identified species of foraminifera namely: Sphaerogypsina globulus, Schlumbergerella neotetraedra, Schlumbergerella floresiana, and Baculogypsina sphaerulata with a comparative abundance of 1611, 775, 275, and 39 respectively. The highest species composition (59.5%) was S. globulus, followed by S. neotetraedra at 28.5%, S. floresiana at 10.1%, and the lowest was B. sphaerulata at 1.5%. At Klui Beach, the species diversity index of foraminifera was 0.960; the evenness index was 0.003; and the species dominance index was 0.448. The most substrate cover was limestone, among the six types of substrate cover. Large algae and live coral substrates were the only substrate covers that showed a significant correlation with the abundance of S. floresiana.

Page 69 of 257 | Total Record : 2562

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