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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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Phytochemical Screening and Antioxidant Activities of Some Seaweed from Kabung Island Waters West Kalimantan Desriani Lestari; Rafdinal Rafdinal
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4361

Abstract

Seaweed is one of the prima donna marine biota which is widely used as a natural antioxidant. Various species of seaweed are found growing naturally in the waters of Kabung Island, West Kalimantan. This study aims to determine the phytochemical content and antioxidant activity of each genus Turbinaria, Hypnea and Caulerpa from those collected in the waters of Kabung Island. Seaweed extraction uses maceration method with methanol to remove active compounds. Next, a phytochemical screening was performed using specific reagents such as alkaloids, steroids, flavonoids, tannins and saponins which will change color or form precipitates. The free radical scavenging method of 2,2-diphenyl-1-picrylhydrazyl (DPPH) solution was used to test the antioxidant activity of each seaweed extract. The active compound in the sample extract will be formed if there is a change in the color of free radicals from dark purple to light yellow or clean. The results showed that the phytochemical screening of the three seaweed extracts contained tannins, flavonoids and saponins. Meanwhile, positive alkaloids were found in Turbinaria and Caulerpa extracts, and steroids were indicated by the genus Hypnea and Caulerpa. Antioxidant screening showed that Caulerpa extract was categorized as a potent antioxidant with an IC50 value of 88.57 ppm, higher than the IC50 of Turbinaria and Hypnea extracts, which were 114.32 and 138.42 ppm respectively and classified as weak antioxidants.
Identification of Plant Species Diversity at SMAN 1 Nguter as Source of Learning Based on Local Potential Umi Salamah; Hidayatun Nurul Khasanah; Suwarto Suwarto; Pardi Pardi
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4433

Abstract

Learning biology directly in the environment provides experiences for students so they can develop an interest in biology. Local potential can be used as a source of learning biology. Biology material has not been linked much in everyday life and is fixated on books. Some biology teachers are less sensitive to the potential in the environment. The solution is to combine biological materials with local potential. The purpose of this article is to identify local potential at SMA N 1 Nguter as a source of learning biology based on local potential on biodiversity material and a form of integrating local potential into biodiversity material. This type of research uses qualitative. As well as an inventory of local plants along with their morphological characteristics using observation and interview methods as well as the types of flowers, the classification is written down. Based on the results of the study, the local potential of flower plants at SMA N 1 Nguter has 5 types of flowers with 12 kinds of colors that can be used as a source of learning biology based on local potential. The form of integrating the potential of flower plants on biodiversity material at the gene and species level can be arranged in modules.
Supervision and Monitoring with the Smart Patrol Method in the Marine Protected Area of the Gili Balu Marine Tourism Park Rahmat Hidayatullah; Abdul Muis; Hernawati Hernawati; Tezar Refandi; Muslihuddin Aini; Sadikin Amir; Muhammad Haikal Abdurachman
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4602

Abstract

The management of conservation areas includes surveillance and monitoring activities (patrols) carried out by supervisory community groups (pokmaswas) using the Smart Patrol method. Patrol activities aim to determine the utilization pattern and level of zoning compliance in the marine conservation area of Gili Balu Aquatic Tourism Park. Patrol activities are carried out in 2021 as many as 8 times with an average of 1 time every month. The average time used to make observations ±5 hours. During the activity, 32 points of utilization of capture fisheries were found by 36 fishermen. The composition of the fishing gear used is 78% fishing line, 10% drift gill nets, 9% squid angling, the remaining 3% arrows. Fishermen's catches are dominated by soft-skin animals (81%), small pelagic fish (16%), and reef fish (3%). The pressure level of TWP Gili Balu utilization is relatively high with the highest value found on Belang Island, which is 32 people per 4 km2. The compliance rate in the core zone is relatively high with a value of 81% and falls into the excellent category, as well as in the utilization zone it is quite high at 42% and belongs to the category of quite good. The level of knowledge or utilization of the Gili Balu TWP area is included in the sufficient (moderate) category, where 41% of users know about the existence of the Gili Balu TWP conservation area and 59% of people who do not know the existence of the Gili balu TWP conservation area and the rules in it. Pokmaswas who are actively involved in surveillance and monitoring activities are Pokmaswas Liang Kuru of Senayan village, Pokmaswas Bua Lawah of Poto Tano village. However, it is still necessary to carry out regular supervision and monitoring at locations that are prone to zoning violations and socialization related to the existence of the Gili Balu TWP conservation area and the zoning rules in it.
Study of Hard Coral Community Structure and Natural Recruitment on Rote Island in the Sawu Sea Marine National Park (TNP) Idris Idris; Fakhrurrozi; Ofri Johan; Jotham S R Ninef; Edwin Jefri; Mahardika Rizqi Himawan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4688

Abstract

Rote Island and its surroundings are included in the Savu Sea Marine National Park (TNP) area and are administratively included in the Rote Ndao Regency, East Nusa Tenggara (NTT) Province. The waters of the area have high potential for coral reef ecosystem resources and are an important for the marine biota. But when the condition is under pressure due to anthropogenic and natural influences. Therefore it is necessary to carry out routine observations related to the condition of the community structure and its potenstial natural recruitment. Observations were made on 26-28 September 2021 at 12 observation stations. The observation method used was the belt transect method with 3 repetitions (20 m) with an area of 60 m2. Data collection using SCUBA equipment at a depth of 5-7 m on the reef flat. The results of the study found a total of 37 hard coral genera and the highest species richness was in Daiama 2 (30 genera) and the lowest was in Oelua and metina (13 genera). The dominant hard coral genera found were the Porites genera. Furthermore, the potential for natural recruitment of hard coral tillers reaches 21%. The highest potential for natural recovery is at Sotimori 1 (station 3) and the lowest at Boni (station 12). In general, the hard coral community structure at the observation site is in a stable condition with good natural recruitment potential.
Analysis of Cadmium (Cd) Heavy Metal Content in Mosambique Tilapia Fish (Oreochromis mossambicus) Derived from Rawa Taliwang Lake to Enrich Ecotoxicology Lecture Material in 2022 Alda Saputri; Khairuddin Khairuddin; M. Yamin
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4845

Abstract

Rawa Taliwang Lake is used as a tourist spot, recreation, irrigation of agricultural land and fishing grounds by local fishermen. Increased community activity around the lake causes heavy metal pollution to enter the waters. The purpose of this study was to determine the levels of cadmium (Cd) in mosambique tilapia fish from Rawa Taliwang Lake thus enrich ecotoxicology lecture material and find out whether mosambique tilapia fish from Rawa Taliwang Lake is still safe for consumption based on the Food and Drug Control Agency (BPOM) Regulation No. 9 of 2022 concerning requirements for heavy metal contamination in food processing. Sampling used a purposive sampling method and analysis of cadmium using Atomic Absorption Spectrophotometer. The results showed that the concentration of cadmium heavy metal in mosambique tilapia fish 0,1977 mg/kg and it is still safe for consumption by the public because it still below 0,30 mg/kg. Suggested further research regarding analysis of metals in various types of fish and fish body tissues such as kidneys, liver and gills as a comparison.
Effect of Glutamate Supplementation in Broiler Chicken Feed to The Quality of Carcass Vebera Maslami; Azhary Noersidiq; Fahrullah Fahrullah; Dwi Kusuma Purnamasari; Yetti Marlida; Mirnawati; Yuliaty Shan Nur
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4873

Abstract

: Glutamate is an alternative feed additive that is safe and environmentally friendly in improving the quality of broiler chicken carcass. This study aims to determine the effect of glutamate produced by Lactobacilus plantarum MV on the quality of broiler chicken carcass. The aim of this research was to get the optimum doses of glutamate in feed broiler for increasing the quality of carcass. The design used was a Completely Randomized Design (CRD), with 6 treatments and 4 replications. This study used 240 broiler chicken strain MB 202 from PT Charoen Phokphand Indonesia, 1 day old and the treatment started at 7 days of age with 5 weeks of treatment. Each experimental unit consisted of 10 chickens. The Glutamate doses in groups were, A (0.4% commercial glutamate; B (0% glutamate); C (0.2% glutamate); D (0.4% glutamate); E (0.6% glutamate); F (0.8% glutamate). The results indicated that glutamate up to 0.8% had significant effects on carcass quality, consisting of reducing abdominal fat (0,64%) and cholesterol (0,64%), as well as increasing meat protein (73,09%) and cooking losses (26.69%). It can be concluded that 0,8% glutamate in broiler feed was increasing the quality of carcass.
Analysis of Mercury (Hg) Heavy Metal Content in Rice Snail (Pila ampullacea) Derived from Rawa Taliwang Lake, West Sumbawa Regency Khairuddin; M. Yamin; Kusmiyati
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4875

Abstract

Danu Rawa Taliwang is a large body of water that receives sources of heavy metal pollution from human activities such as agriculture and mining. By using bioindicators such as fish, heavy metals have been detected in the waters. The aim of the study was to determine the content of heavy metal mercury (Hg) in the Rice Field Snail (Pila ampullacea) originating from Lake Rawa Taliwang to enrich Ecotoxicology course material. The special benefit is to protect consumers who consume fish from heavy metal contaminants.  Sample Snail was put into a plastic bag and then stored in a sample box. The research sample was then analyzed at the Environmental Laboratory Center for the West Nusa Tenggara Environment and Forestry Office. The method of data analysis was carried out by taking muscle tissue from snails and then analyzing the content of heavy metals in the form of Hg using an Atomic Absorption Spectrophotometer. Heavy metals in snail tissue were measured after adding concentrated HNO3 and HClO4, which were heated at 60-70ºC for 2-3 hours until the solution was clear. Ready samples were measured by AAS using an air-acetylene flame. The conclusion of this study is that the heavy metal content of Hg in rice field snails (Pila ampullacea) originating from Lake Rawa Taliwang to enrich Ecotoxicology course material ranges from 0.96 ppm to 1.91 ppm.
Pharmaceutical Biotechnology Products in the Form of Hand Washing Soap Kombucha Bunga Telang (Clitoria ternatea L) as Antibacterial for Salmonella thypi and Listeria monocytogenes Devita Anugrah Anggraini; Firman Rezaldi; Anggita Sofianti; Irmawati Mathar; Yuliana Kolo
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4892

Abstract

The growth of Salmonella thypi and Listeria monocytogenes bacteria can be inhibited by butterfly pea flower kombucha. This is because telang flower kombucha has pharmacological activity so it can be developed in the pharmaceutical field. This research needs to be carried out to make hand washing soap made from an active solution of telang kombucha diffusing solution so that it can stop the growth of Salmonella thypi and Listeria monocytogenes bacteria. The research method uses laboratory experiments. The data obtained were then analyzed using One Way Analysis of Variance and post hoc. The results of the study showed that the formulation and preparation of hand washing soap with a concentration of 40% active ingredient in a solution of butterfly pea flower was able to stop the growth of both bacteria with a P value <0.05. In conclusion, these two bacteria can be inhibited with hand washing soap containing 40% of a decoction of butterfly pea flower kombucha.
A healthy lifestyle of the diabetic sufferer to avoid the risk of complications: Literature Review Nini Asri Rahmayunita; Hamsu Kadriyan; Eka Arie Yuliyani
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4923

Abstract

Diabetes Mellitus (DM) is a chronic disease with high blood sugar levels in the blood. DM can cause complications of various diseases because the body can not use blood sugar in the blood cannot be used. The number of DM sufferers, both in the world and in Indonesia, continues to increase from time to time, so this disease is a scourge for everyone. Writing this paper aims to discuss the healthy lifestyle of diabetics to avoid the risk of complications. The most severe disorder of this disease is a chronic metabolic disorder because the pancreas does not produce enough insulin hormone, which has the principal role in regulating and controlling glucose metabolism into energy. Over time, diabetes can interfere with the function of human organs. For example, some organs work improperly, and some should be amputated. One of the most effective efforts to keep blood sugar levels stable is dietary compliance in people with diabetes mellitus has role function. The impact of dietary regulation is maintaining normal-body weight, reducing systolic and diastolic blood pressure, lowering blood glucose levels, improving lipid profiles, increasing insulin receptor sensitivity, and improving the blood coagulation system. This disease requires continuous medical care by carrying out independent health management in patients to prevent acute complications and reduce the risk of long-term complications. It is principal to adopt a healthy lifestyle for diabetic patients in a frame to anticipate the risk of complications.
Survival Rate and Growth Rate of Transplant Acropora sp and Porites sp Corals in Kecinan, North Lombok Sigit Hariyanto; Ibadur Rahman; Mahardika Rizqi Himawan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
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.v23i2.4876

Abstract

Coral reef ecosystem is an ecosystem that plays a vital role as spawning floor, feeding floor and nursery ground for marine biota. This study aims to determine the survival and in growth rate of Acropora sp and Porites sp sp corals transplanted using frame media. This research was done in Kecinan Coastal Waters, Malaka Village, Pamenang District, North Lombok Regency. West Nusa Tenggara. The method used in this study an experimental method with 2 month observation, which repeated in every 2 weeks. Coral growth rate is observed twice, at the beginning of coral planting and at the end of the observation. The frame media used were 4 units a size of 1 x 1 m2, which placed 30 coral fragments each. So the total number of coral fragments observed was 120 in the media frame at the same depth. Acropora sp corals that were able to survive until the end of the study reached 96.67% while Porites sp sp corals reached 86.67%. The growth rate of Acropora sp was obtained at a value of 0.51 cm/month, while for Porites sp sp was 0.37 cm/month. The two transplanted corals had different growth forms so that they had different growth rate values. Acropora sp coral had a branching growth form with a hollow and porous limestone structure while Porites sp sp had a massive growth form with a denser and harder limestone skeletal structure.

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