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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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Isolation of Endophytic Fungi from Vitex trifolia L and Antagonism Test against Sclerotium rolfsii and pathogenic bacteria Muhammad Hasan Basri; Lalu Zulkifli; Abdul Syukur
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.v21i1.2340

Abstract

Plant damage by pathogenic fungi is often found in plants, one of which is caused by Sclerotium rolfsii. Biological control strategy offers a promising alternative for managing disease in plants because they are environmental friendly compared to pesticides application. One of the biological control offered is by using endophytic fungi isolated from Vitex trivolia L. The aim of the study was to isolate, to identify macroscopic and microscopic endophytic fungi from Vitex trifolia L and to test their antagonism potency against the pathogenic fungus Sclerotium rolfsii in vitro. The isolation obtained 7 endophytic fungi isolates identified based on their genus characteristics, nsmely Periconia sp, Aspergillussp, Dendrophoma  sp, Geotrichum  sp, Ampulliferina  sp, Chalara  sp, dan Bispora sp and 2 isolates have not been identified. The Antibacterial test of the fungi isolate on the 4 tested bacteria showed that of all the fungi isolate have low activity. The antagonism test using the direct opposition method with the PIRG formula, showed that the 3 isolates had high percentage of growth inhibition, in which ALJ1, BLJ5, and ALJ3 isolate has  85%, 90%, and 100% respectively. This potency could be used as biological agents on the pathogenic fungus Sclerotium rolfsii.
The Effect of Biofloc with the Addition of Different Commercial Probiotics in Catfish (Clarias sp.) Dewi Putri Lestari; Fariq Azhar; Muhammad Marzuki
Jurnal Biologi Tropis Vol. 21 No. 2 (2021): Mei - Agustus
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.v21i2.2552

Abstract

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. 
POLA PRILAKU KEBERADAAN SEMUT FAMILI FORMICIDAE PADA TEPIAN SUNGAI MUSI GANDUS KOTA PALEMBANG SUMATERA SELATAN Riyanto Riyanto; Ari Saputra; Zainal Arifin
Jurnal Biologi Tropis Vol. 20 No. 1 (2020): Januari - April
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v20i1.1735

Abstract

Abstrak: Faktor alam dan lingkungan dapat mempengaruhi pola keberadaan semut. Penelitian ini bertujuan untuk mempelajari pola keberadaan semut tanah di area permukiman tepian Sungai Musi Kecamatan Gandus Palembang. Metode penelitian ini adalah deskriftif.Stasiun penelitian meliputi rumah, tepi sungai, semak, butan dan kebun. Pengambilan contoh sampel semut menggunakan metode hand collecting dan perangkap umpan (baited trap).Hasil penelitian semut tanah Solenopsis germinata dan Paratrechina longicornis hampir ditemukan disemua stasiun.Spesies semut yang paling sedikit ditemukan, yaitu Diacamma intricatum danPheidole megacephala. Rumah kurang dari 100 m dari tepi sungai Musi ditemukan tiga spesies semut, yaitu dua dari subsuku Myrmicinae dan satu dari Formicinae (S. germinata, P. megacephala dan P. longicornis). Ketiga spesies ini sama dengan yang ditemakan pada semak-semak.  Lokasi yang berjarak 100-200 m dari tepi sungai memiliki komposisi dan keanekaragaman semut yang semakin meningkat. Stasiun rumah ditemukan sebanyak tiga spesies, yaitu S. germinata, Pheidole sp, dan P. longicornis. Stasiun semakditemukantiga jenis semut, yaitu S. Germinate, Monomorium pharaonisdan T. melanocephalum. Stasiun kebun ditemukan empat spesies, yaitu: Acanthomyrmex sp., S. germinata, P. longicornis, danCamponotus ligniperda.Stasiun hutan ditemukan enam spesies yaitu: Acanthomyrmex sp., S. germinata, P.longicornis, Camponotus ligniperda danDiacamma intricatum. Jumlah jenis semut yang paling banyak ditemukan adalah di stasiun hutan. Pola keberadaan semut di berbagai lokasi tepian sungai Musi Gandus Palembang memiliki pola fluktuasi jumlah dan jenisnya.Kata kunci: semut tanah, pola keberadaan, sungai Musi danPalembangAbstract: The natural and environmental factors can affect the pattern of ants. This study aims to study the pattern of the presence of soil ants in the settlement area of the banks of the Musi River, Gandus, Palembang. This research method is descriptive. The research station includes houses, river banks, bushes, butane and gardens. The sampling ant samples using the method of hand collecting and baited traps. The results of research on the ground ants Solenopsis germinata and Paratrechina longicornis are found in almost all of stations. The fewest ant species found were Diacamma intricatum and Pheidole megacephala. The houses less than 100 m from the banks of the Musi river are found by three ant species, namely two from the Myrmicinae sub-tribe and one from Formicinae (S. germinata, P. megacephala and P. longicornis). These three species are the same as those found in bushes. The location which is 100-200 m from the river bank has an ant composition and diversity that is increasing. The housestations were found as many as three species, namely S. germinata, Pheidole sp, and P. longicornis. The bush station found three types of ants, namely S. Germinate, Monomorium pharaonis and T. melanocephalum. The garden station found four species, namely: Acanthomyrmex sp., S. germinata, P. longicornis, and Camponotus ligniperda. The forest station found six species, namely: Acanthomyrmex sp., S. germinata, P.longicornis, Camponotus ligniperda and Diacamma intricatum. The number of ant species most commonly found is at the forest station. It can be concluded that the pattern of the presence of ants in various locations on the banks of the Palembang Gandus Musi river has a fluctuation in the number and type.Keywords: soil ants, existance pattern, Musi river, Palembang
Ethnobotany Study through the Utilization of Medicinal Plants in Obesi Village, Mollo Utara District, South Central Timor Regency Angreni Beaktris Liunokas; Nonci Melinda Uki
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): 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.v20i3.2065

Abstract

The culture of using plants as traditional medicine by a group of local people is always related to regional identity, rituals, and plant diversity that need to be studied in depth. This study is known as ethnobotany study. This study aims to determine, describe, and analyze the level of ethnobotany knowledge of plants in their use as traditional medicine by the Obesi village community, North Mollo district, South Central Timor district. The methods used were surveys and direct interviews which were guided by a list of questions for several Obesi villagers with the snowball sampling technique. The data obtained were presented in tabulated form and analyzed descriptively with a quantitative approach to determine the ethnobotany level of medicinal plants. The results showed that there were 40 types of plants from 28 families that were used by the community to treat various diseases such as rheumatism, appendicitis, hypertension, fever, convulsions, diarrhea, flatulence, and itching with the most used plant parts, namely leaves, fruit, roots/rhizomes, tubers, midrib, bark, and seeds and flowers in a very simple or traditional way. Ethnobotany level of knowledge based on age class is at a moderate level where the lowest (KU1) 0.574 and the highest (KU4) 0.899, and based on gender, women have a higher level of knowledge than men. The research results are expected to be used as a reference source for important information in the utilization of various types of medicinal plants in the surrounding environment.
Study of Ethno Cosmetics Natural Care of Batujai Village Community, West Praya, Central Lombok Nurul Istiqomah; Nisa Isneni Hanifa; Kurniasih Sukenti
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.v21i1.2342

Abstract

Cosmetics are a major need for women everyday life, which can be seen from the increasing income of the cosmetics industry for up to 12% in 2016. Natural ingredients are the alternative to reduce the negative impact of synthetic cosmetics. Knowledge about it is obtained from generation to generation with oral traditions but has several weaknesses. The aims of study to conduct studies related to use of natural ingredients and to find out the value of the use of plants as natural care cosmetics by the people of Batujai village. This research used descriptive methods with qualitative and quantitative approaches, where quantitative data is the result of the calculation of the Index of Cultural Significance (ICS) and Fidelity Level (FL). The results showed that there were 13 natural care cosmetic ingredients consisting of 27 species and 18 families. The potions are children's rapus, rapus golam, rapus mutu, rapus wajah, soap, shampoo, mamak, kejames 1, kejames 2, kejames 3, kejames 4, serbat, and toothpaste. The highest ICS value of 42 was found in the species Oryza sativa L. and the lowest value of 6 was found in the species Amaranthus arenicola, Musa, Cocos nucifera L., Aleurites moluccanus, Aloe vera, Syzygium aromaticum (L.) Merr., Citrus aurantiifolia, Piper retrofractum Vahl, Lannea coromandelica, Jatropha curcas L., Sida rhombifolia L., Ipomoea alba L., Barringtonia racemosa, and Ipomoea sepiaria. FL values range from 25-100%.
Diversity of Vegetable Types Typical to Lombok Island in an Effort to Support Food Security in the Community Immy Suci Rohyani; Ahmad Jupri; Suripto Suripto; Sukiman Sukiman; Kurniasih Sukenti
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.v21i1.2371

Abstract

The island of Lombok with the majority of its original inhabitants, namely the Sasak tribe, has known and used a number of plants as typical food or vegetables to complement the main menu. Typical vegetables are vegetables that are only found in an area, at a certain season and processed in a special way. Currently, the existence of vegetables typical of the island of Lombok is rarely found and some of them are starting to become extinct. This study aims to obtain data related to the diversity of species, economic value and distribution of typical vegetables on the island of Lombok. The information obtained is very much needed in building a data base that can be used as important information in the process of plant conservation and domestication. The research method used was an exploratory survey with a qualitative approach through a structured interview technique using a questionnaire that was presented orally. The research locations were all districts on the island of Lombok. The results showed that there were 53 types of vegetables typical of the island of Lombok. Trees are the most common types of habitus (17 species), then shrubs (16 species), herbaceous species (14) and 10 creeping types. Young leaves are part of the plant that is most widely used as a vegetable. Most of these vegetables are not traded and grow wild in forests or cultivated areas. The districts of East Lombok and Central Lombok are the areas where the most of these types of vegetables are found, while the city of Mataram is the area with the least. The small area and the lack of green open space are suspected to be the cause of the reduction in the typical vegetables found in the city of Mataram.
Vegetative Growth of Kale Land (Ipomoea reptans poir.) Due to Different doses of NPK and Bokashi Fertilizer Ahmad Raksun; Mahrus Mahrus; I Gde Mertha
Jurnal Biologi Tropis Vol. 20 No. 2 (2020): Mei - Agustus
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v20i2.2022

Abstract

In order to maintain soil fertility, NPK fertilizer applications that have been carried out by farmer need to be combined with non chemical fertilizer such as bokashi. Research on vegetative growth of kale land due to NPK and bokashi fertilizer has been carried out in Bajur Village, West Lombok Regency. The purpose of this research was to detemine: (1) vegetative growth of kale land due to different doses of NPK fertilizer, (2) vegetative growth of kale land due to different doses of bokashi, (3) the effect of interaction of NPK and bokashi fertilizer on growth of kale land, (4) Optimum dose of NPK fertilizer and bokashi for kale land. This research used 2 factors design. The first factor is the dose of NPK fertilizer and the second factors is the dose of bokashi. The growth parameters measured were stem height, leaf length, leaf width and number of kale land leaf. Reseach data analyzed using analysis of variance. The results showed that: (1) NPK fertilizer treatment significantly affected stem height, leaf length and kale leaf width, but have no significant effect on the number of kale land leaves, (2) bokashi aplication significantly affected stem heght, leaf length and kale land leaf width but did not significantly affect the number of kale land leaves, (3) the interaction of NPK fertilizer and bokashi did not significantly affect all growth parameters measured, (4) the optimun dose of bokashi for kale land is 1,2 kg for 8 kg of soil and the optimum dose of NPK fertilizer is 1,5 g per plant.  It is recommended that kale land famers use 1,2 kg bokashi for 8 kg of soil and 1,5 g NPK fertilizer per plant.
Antibacterial Activity of Methanol Extract of Sargassum polycystum on Escherichia coli and Staphylococcus aureus Mursal Ghazali; Muhammad Zaki; Ernin Hidayati
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.v21i1.2485

Abstract

Macroalgae is a commodity that is used as food, medicine, fertilizer and other materials in industries. Macroalgae in the medical world have the potential to be anticancer, antiviral, antifungal and antibacterial. One type of macroalgae that has the potential as an antibacterial source is Sargassum polycystum. This study aims to analyze the ability of the methanol extract of S. polycystum to inhibit the growth of bacteria (Escherichia coli and Staphylococcus aureus) and analyze the potential compounds contained in the methanol extract of S. polycystum. This research is an experimental study using a completely randomized design. Extraction method by maceration. The test concentrations used were 20%, 40%, 60%, 80%, positive and negative control. While the test method uses a good diffusion method. Data were analyzed using description and SPSS application. The results showed that the methanol extract of S. polycystum had better inhibition against S. aureus growth than E. coli. The methanol extract concentration of S. polycystum, which had the best inhibition against S. aureus and E. coli was 80%. Metabolites content on S. polycystum extract is Tetradecanoic Acid, Loliolide; Hexadecanoid Acid, Methyl Ester, 9-Hexadecanoid Acid, Hexadecenoic Acid, 8-Octadecanoic, Methyl Ester, 5,8,11,14-Eicosatetraenoic Acid and Ethyl Ester.
Comparison of Morphological Characters of Freshwater Crayfish (Cherax quadricarinatus) from Different Ecosystems in Indonesia Bambang Widigdo; Agus Alim Hakim; Ali Mashar; Iya Purnama Sari; Yusli Wardiatno
Jurnal Biologi Tropis Vol. 20 No. 3 (2020): 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.v20i3.2310

Abstract

Freshwater crayfish (Cherax quadricarinatus) as an invasive species has high capability to adapt in most waters in Indonesia. The extant distribution of this species in Indonesia causes observation of morphological characters  is important to be established. This study purpose is to compare the morphological characters of Cherax quadricarinatus from several locations in Indonesia waters, such as the river in Bintan Island, Toba Lake, and Lido Lake. The total of morphological characters was measured in twenty-two characters. The result of the Kruskal-Wallis test represented nine different characters between Toba, Bintan, and Lido. Cluster analysis illustrated the highest level of similarities between Toba and Lido. The growth rate of the dactyls, and carapace width, and ocular carapace length between Toba and Lido were similar, meanwhile between Toba and Bintan were different. C. quadricarinatus originating from river waters in Bintan Island has a different morphological character from Lake Lido and Lake Toba. The differences in morphological characters between locations are caused by differences in habitat characteristics in rivers and lakes.
Socio-Economic Losses of Small Fishermen after Lobster Seeding Banning Policy (Case Study in Batu Nampar Selatan Village, East Lombok Regency) Syarif Husni; M. Yusuf; Muhammad Nursan; Aeko Fria Utama FR
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.v21i1.2398

Abstract

       The objectives of this study are: 1) to find out the perceptions of small fishermen about PERMEN KP No.1 / 2015 in conjunction with Minister of Marine Affairs and Fisheries Regulation No.56 / 2016, 2) to calculate the social losses of small fishermen after the prohibition policy on the prohibition of fishing for lobster seeds, 3) to calculate the economic losses of small fishermen after lobster seed fishing prohibition policy. This research uses descriptive methods and case studies. Apart from interviews with respondents, it was also conducted using the Focus Group Discussion (FGD) method. The number of respondents was determined as many as 30 people by simple random sampling and the data analysis used consisted of descriptive analysis based on tabulations, and after processing it was presented in tabular form, analysis of people's work days (HKO) and analysis of costs and income.  The results showed: 1) The most dominant perception of fishermen is that the existence of the Minister of Marine Affairs and Fisheries Regulation needs to be reviewed and the compensation provided by the government is not in accordance with the conditions of fishermen 2) Social losses for fishermen in terms of employment of 208 HKO / year, and 3) Economic losses, namely the loss of income of small fishermen of 121,329,000 IDR/ year.

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