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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
 33   34   35   36   37 
The Types of Trigona Bee (Apidae: Meliponinae) in Three Different Habitat in South Sumatra Ani Suderajat; Riyanto Riyanto; Mulawarman Mulawarman
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.v21i1.2461

Abstract

Bees are known to be useful directly or indirectly in human life and ecosystem. This study aims to obtain information about the types of Trigona bees in three different habitats in South Sumatra. This research uses a descriptive method with a purposive sampling technique. Identification is done by observing the morphological characters. Trigona bee samples were taken from three different habitats, namely the Indralaya Sriwijaya University campus, the village of Aurduri Muara Enim, and the village of Kota Agung Lahat. The research found three species of Trigona bees from three different habitats. The three species are from three subgenera, namely Tetragonula, Heterotrigona, and Lepidotrigona. The location of the habitat for the Indralaya Sriwijaya University campus was found Tetragonula laeviceps, and Heterotrigona itama. The habitat of the village of Aurduri Muara Enim was found  T. laeviceps and Lepidotrigona terminate. The location of the habitat for the village of Kota Agung Lahat was found  T. laeviceps. The most common type of Trigona bee and found in almost every type of habitat is T. laeviceps. H. itama is only found on the Indralaya Sriwijaya university campus, while L. Terminate is only found in the village of Aurduri Muara Enim. Conclusion Trigona bees from 3 different habitats in South Sumatra found as many as 3 subgenuses, namely Tetragonula, Heterotrigona, and Lepidotrigona. The types of Trigona bees are T. laeviceps, H.itama, and L. terminata. 
Stomatal Characteristics of 5 Citrus L. Species (Rutaceae) From Pekanbaru, Riau Province Nery Sofiyanti; Putri Intan Wahyuni; Dyah Iriani
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.v22i1.3100

Abstract

Stomata of leaf is one of the important trait in plant taxonomic study. This trait can be used to characterisize the members of a plant group including Citrus.This genus is one of fruit plant that commonly known in Pekanbaru, Riau. The aim of this study was to examine the characteristic of stomata of 5 Citrus species from Pekanbaru, Riau Province, Indonesia. Leaves were collected from the field. The stomatal preparations were conducted using replica method. Stomata were then observed and photographed using Mikroskop Binokuler Olympus CX23 and Mikroskop LCD Digital Celestron Model 44340. The results show that stomata of all Citrus species examined in this study shows the similar type, hypostomatic with reniform-shaped stomata. However, the variations are found in stomata density and index, as well as the length and length of stomata. C. hystrix and C. aurantifolia have the lowest (419.89/1 mm²).), and the highest stomatal density (685.89/1 mm²).), respectively. The size of stomata varies within the species. C. microcarpa has the biggest stomata size (20.5 x 18.5 µm).  Stomatal density of Citrus examined in this study are high (> 500 / mm2) in C. aurantifolia and C. limon) and medium (300 - 500 / mm2) in C. amblicarpa, C. hystrix and C. microcarpa. The density, index and size of stomata can be used to characterize each Citrus members that examined in this study.
Durian variety (Durio zibethinus L.) in Kota Bahagia District, South Aceh, Indonesia Mardudi Mardudi; Eka Selviyanti; Adi Bejo Suwardi
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.v21i1.2361

Abstract

Durian (Durio zibethinus L.) is one of tropical fruit grown in Southeast Asia and known as King of the fruit. Durian (D. zibethinus) has many varieties with distinctive of morphological characters. The study aim is to explore the diversity of durian varieties in Kota Bahagia sub-district, Aceh, Indonesia. This study was carried out in October-December 2020 in five villages, namely Jambo Keupok, Alur Duamas, Seneubok Alur Buloh, Seneubok Keranji and Beutong. Data collection on the morphological characteristics of durian varieties was carried out through direct field observation of morphology. The data were tabulated and the similarity index was calculated. A total of 18 varieties of durian were found in 5 villages in Kota Bahagia sub-district, i.e. Jantung, Semut, Nanas, Kunyit, Bintang, Tamago, Labu, Bingen, Patai, Jelatang, Jerat, Ampo, Toba, Lilin, Kondo, Limeng, Langsat, dan Gadang Tampok. The highest similarity index value was found in Limeng (Lm) and Patai (Pa) varieties with an association coefficient value of 63.04, while the lowest values were found in Nanas (Na) and Semut (Se) varieties and Kondo (Ko) and Nanas (Na) varieties with an association coefficient of 15.21.
The Effect of Young Leaves Extract of Arumanis Mango as an Antidepressant in Zebrafish (Danio rerio) Risda Arba Ulfa; Tri Cahyanto; Ikeu Winda Larasati; Adisty Virakawugi Darniwa; Ayuni Adawiyah; Afriansyah Fadillah
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.v22i1.3231

Abstract

Sustained stress is risked for the emergence of various diseases including disability to depression. Clinically, antidepressant drugs are still the main option even though they are known have side effects for users. Therefore, various types of drug plants that have the potential as natural antidepressants have begun to be used, one of them is the young leaf of mango (Mangifera indica). It is known contains various bioactive compounds, including mangiferin which is useful as an antioxidant, anti-inflammatory, and plays a role in protecting nervous tissue. This study aimed to determine the effect of Mango’s young leaves extract of Arumanis cultivar as an antidepressant in zebrafish (Danio rerio) exposed to Unpredictable Chronic Stress (UCS). The method used is Completely Randomized Design (CRD) which consists of 3 treatments, namely K (Aquadest); P1 (extract concentration 10µg/mL); and P2 (extract concentration 20µg/mL). The parameters include the antioxidant activity and behavioral tests, namely new tank diving and light/dark preferences. The results showed that exposure to UCS tends to increased anxiety as indicated by a decrease in exploration on behavioral test. The data showed that the Mango’s young leaves extract induction with a concentration of 20µg/mL obtained the highest value percentage in the exploration of the upper area (36.8 s) and the preference of the bright area (90.8 s) significantly. The induction of mango’s young leaves extract has the potential as an antidepressant in zebrafish exposed to UCS with an optimal concentration of 20µg/ml.
The Diversity of Butterflies (Lepidoptera) in the Aik Bukak Tourism Park Area Rizka Yulia Ashari; Moh. Liwa Ilhamdi; Didik Santoso
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.v22i1.2850

Abstract

Butterflies have an important role in human life in various fields such as ecology, economy, aesthetics, and education. The Aik Bukak Tourism Park area is one of the butterfly habitats in Aik Bukak Village, Batu Kliang Utara District, Central Lombok Regency. That aims to determine the diversity of butterflies in the Aik Bukak Tourism Park area. Data collection used a purposive survey method with a sweeping technique following three predetermined observation lines, namely the entrance, the path around the pond, and the forest path. This research was fully recorded 327 individuals member of 23 spesies, 18 genera, and 5 families. The analysis of the butterfly species diversity index used the Shannon-Wienner formula and the diversity index value (HÕ›) was 2.939 which means medium category. The species dominance index was analyzed using the Simpson's species dominance formula and obtained the species dominance index value was 0.059, which means that no species dominates at that location.
The Solid Influence of Spread on the Growth and Survival Rate of Sea Worm's (Nereis sp.) Rajuansah Rajuansah; Muhammad Junaidi; Bagus Dwi Hari Setyono
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.v21i1.2504

Abstract

Nereis sp. including one of the commodities that have high economic value as well as important commodities in the world of aquaculture. The survival rate of organisms affected by good cultivation management include solid spread, feed quality, water quality, parasites or diseases. High spread solids will have an impact on the decrease in growth rate, feed consumption and survival rate. Therefore, the importance of research on solid spread because it is very closely related to the production and growth speed of cultivated biota. This study was conducted to find out the influence of different scatter solids on the growth and life's smoothness Nereis sp. The research was conducted for 35 days of maintenance using marine worm biota or Nereis sp. The method used is an experimental method using a Complete Randomized Design (RAL) with 5 treatments and 3 repeats namely, Treatment 1: solid spread 50 individuals/m2, Treatment 2: solid spread 100 individuals/m2, Treatment 3: solid spread 150 individuals/m2, Treatment 4: solid spread 200 individuals/m2 and Treatment 5: solid spread 250 individuals/m2. Treatment with solid spread 150 individuals / m2 (P3) gives the best influence in improving the growth and survival of Nereis sp. 0.7838 g and 93.33%.
Diversity of Reef Fish in Pancuran Beach and The Harbor Area of Karimunjawa National Park Dhanis Nuranggitasari; Ardyan Pramudya Kurniawan
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.v21i3.3010

Abstract

Research on the biodiversity of Ikhthiofauna in coral reef ecosystems in Karimunjawa National Park was carried out in March 2021. This study aimed to study the species of reef fish found in the National Park Karimunjawan, to study the dominant reef fish species, the level of diversity, and the factors that influence reef fish biodiversity in Karimunjawa National Park. Data collection was carried out at two research locations, namely Pancuran Beach and Harbor Pier. This research was conducted using the visual census method at each station made transects with a distance of 5 m per transect. Each transect is 50 m long parallel to the shoreline. Observations were made by snorkeling along the 2.5 m transect line to the right and the left, then the fish obtained were drawn using waterproof paper, numbered per species, and photographed using an underwater camera for identification. Data analysis was carried out, including descriptive analysis to analyze fish characteristics and quantitative analysis to calculate data, including the Shannon Diversity Index (H'), Simpson's Dominance Index (C), and Evenness Index (E). The environmental parameters taken include water temperature, salinity, pH, and DO. This study identified a total of 59 species of reef fish from 17 families, with the dominant family was Pomacentridae. The level of diversity (H') at the research location at Pancuran Beach reached 3.392, while at the Harbor Pier, it reached 3.428. The Simpson Dominance Index (C) value at the Pancuran Beach location is 0.044, and the Harbor Pier is 0.047. The Evenness Index (E) value at the Pancuran Beach location is 0.88, and the Harbor Pier is 0.85. The difference in the index value is influenced by various environmental factors, both physically, chemically, and biologically. 
Benthic and Substrate Category Profile of Coral Reef in Labuan Pandan Waters, East Lombok Noar Muda Satyawan; Novita Tri Artiningrum
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.v21i1.2448

Abstract

Coral reefs are unique ecosystems and only occur in the tropics area. One of the coral reef distribution in Indonesia is Lombok Island. The coral reefs in Lombok Island under degradation conditions caused by natural and human activities. The purpose of this study was to provide an overview of the benthic profile and substrate of coral reefs in the Labuhan Pandan waters, Eastern Lombok. Observations were conducted in March 2019 at 5 stations using the Underwater Photo Transect (UPT) method. The results showed that in general benthic coral reefs were dominated by Acropora Branching (35.40%) then followed by Soft Coral (20.89%), DCA (14.08%), Coral Foliose (11.07%), Rubble (7.36%) and Halimeda (2.77%). The highest percentage of Acropora Branching were found at KND_01 station (63.33%) followed by PTG_01 (49.13%), PTG_02 (31.18%), BDR_01 (21.73%), and PTG_03 (11.00%). The highest DCA percentage was found at BDR_01 station (29.27%) while Soft Coral was found dominant at PTG_02 (47.67%). Halimeda was only found in PTG_02 (1.87%) and PTG_03 (12.00%). Differences in the composition of benthic and substrate may be caused by differences in water conditions at each station.
Having More Plants at Home During the Covid-19 Pandemic: Is It Just Following A Trend? Whisnu Febry Afrianto; Rindang Diannita
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.v22i1.3245

Abstract

The Covid-19 pandemic has drastically changed the social and environmental conditions. People should stay at home for self-isolation and social distancing to avoid the spread of Covid-19. People tend to have more plants at home associated with psychological impact during self-isolation. This study aimed to describe having more plants during the Covid-19 pandemic in Indonesia. A nationwide cross-sectional survey involving an online survey was carried out of an Indonesian population-based sample of 412 respondents from 26 provinces, considered demographic, social, and behavioral variables. The variable affecting the having plants during the Covid-19 pandemic was analyzed using non-parametric analysis of the Kruskal Wallis test. The result showed that people preferred having more plants during the Covid-19 pandemic to reduce negative emotions and feelings. The majority of the respondents tend to have 1-10 plants and spend around <100 K (IDR) monthly to maintain and buy plants. They think that efforts to maintain were the most challenging in gardening activities. The majority of the respondents had potted plants at home to make their homes greener. The Kruskal Wallis test showed the p-value (>0.05) for all characteristic respondents. Thus, it can be concluded that there was no significant difference regarding the motivation to have planted during the Covid-19 pandemic from characteristic respondents.
Phylogenetic Analysis of Rasbora spp. Based on the Mitochondrial DNA COI gene in Harapan Forest Ahmad Subari; Abdul Razak; Ramadhan Sumarmin
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.v21i1.2351

Abstract

Harapan forest is the remaining lowland tropical forest in Sumatra which represents about 20 percent of the biodiversity on the island of Sumatra. There are several Rasbora species found in the Sungai Kapas Tengah River Refuge in the Harapan Jambi Forest that the relationship is not yet known.This research aims to know kinship and genetic distance several species of Rasbora from Sungai Kapas Tengah, Hutan Harapan Jambi. The method in this research using secondary data from the NCBI website ((National Center for Biotechnology Information). The data taken, namelynucleotide sequence from the Cytochrome Oxidase I (COI) gene in mitochondrial DNA. The Rasbora species analyzed were Rasbora from identification results in the Sungai Kapas Tengah River Refuge, Harapan Jambi Forest, consisting of, Rasbora bankanensis, R. caudimaculata, R. cf. sumatrana, R. dusonensis, R. elegans, R. sumatrana, and R. trilineata. Based on phylogenetic analysis, the location of the branch length in each Rasbora species, the closest kinship is owned byR. sumatrana and R. elegans species. Based on the results of genetic distance analysis, the closest genetic distance was the species R. elegans and R. sumatrana, with a distance value of 0.023 (2.3%). While the farthest genetic distance between R. bankanensis and R. caudimaculata, with a distance value of 0.172 (17.2%).Based on research results It can be concluded that R. bankanensis has a greater kinship and genetic distance value than other Rasbora species, so that this species forms a separate group. Meanwhile, 5 other species have kinship and the value of close genetic distance so that these species are united in the same group. For future researchers, it is hoped that some additional families of fish species will be analyzed for phylogenetic analysis in Sungai Kapas, Hutan Harapan Jambi, so that they can find out the relationship of several other species.

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