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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 2,520 Documents
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The Marine Organisms as Potential Sources of Inhibits ACE on Hypertension Patient Alma Dyah Perwita; Adam Trojan Alisyahbana; Adinda Ilsa Maulida; Alfia Mawaddah; Ali Ramzi; Legis Ocktaviana Saputri
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): Special Issue
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.v23i1.6162

Abstract

Abstract: Hypertension is a condition of chronic high blood pressure in the systemic arteries which is a major risk factor for cardiovascular disease, kidney disorders, and death. There are two types of hypertension, the primary hypertension is thought to be caused by hereditary factors, age, gender, race, and an unhealthy lifestyle. Secondary hypertension is caused by an obvious cause. The prevalence of hypertension in Indonesia is quite high with the highest incidence rate in South Kalimantan (44,1%) and the lowest in Papua (22,2%). The pathophysiology of hypertension involves the enzyme Angiotensin Converting Enzyme (ACE) which plays a role in regulating blood pressure. The process of converting Angiotensinogen to Angiotensin I, then Angiotensin II by ACE can cause vasoconstriction and fluid retention, which contribute to hypertension. The changes in circulation and blood vessel structure have played a role in the risk of hypertension complications, including stroke. The marine organisms such as fish, shellfish, cephalopods, seaweed, and algae contain peptides with antihypertensive, anticoagulant, antithrombotic, and hypercholesterolemic activities. For example, hydrolyzate of the jellyfish, Rhopilema esculentum can inhibit ACE with a high level of effectiveness. The current hypertension treatment often uses synthetic drugs such as ACE inhibitors and Angiotensin Receptor Blockers (ARBs), but these have undesirable side effects. Therefore, bioactive peptides from marine organisms can be an efficient and safe natural alternative. The research on protein hydrolysates from various sources has found ACE inhibitory activity and several peptides such as Trp-Pro-Met-Gly-Phe (WPMGF) and APP, KPLL, and VYPFPGPIPNSLPQNIPP were identified to have strong ACE inhibitory activity. These findings indicate the potential use of bioactive peptides from marine organisms as a natural alternative for the treatment and prevention of hypertension.
Colonization of Nipa Worms (Namalycastis spp.) Based on Differences in Depth of Placement of Nipah Fronds in Kakap River of West Kalimantan Jennifer Vasilya Panirman; Tri Rima Setyawati; Junardi
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.6165

Abstract

Namalycastis spp. is deposit feeder animal because it eats by utilizing organic matter and omnivorous. The existence of Namalycastis has been found inhabit naturally decomposing nipa fronds (Nypa fruticans). Data regarding the colonization of Namalycastis are currently not available. The purpose of the study is to discover the first time and the peak of colonizations and the number of individual Namalycastis based on the depth of placement of different nipa fronds in Kakap River Mangrove Area of West Borneo. Sampling was carried out at three depths: 0-10 cm, 10-20 cm, and 20-30 cm for three months within a 10 days collection period. The highest number of Namalycastis individual during the study were found in nipa fronds placed at depth of 0-10 cm is 616 individuals with the highest number found in week 4 of incubation. Soil texture in Sungai Kakap mangrove forest was dominated by dust with C-organic content decreased as the number of individual nipa worms decreased.
Identification of Food Types of Ghost Crabs (Ocypode kuhlii L.) in The Intertidal Zone of Peudawa Beach, East Aceh Dwi Syaravicena; Sri Jayanthi; Aini Ramadila; Suci Nurlida Sapitri; Devi Anisa; Viska Anisa Sabrini
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.6166

Abstract

Ghost crabs are one of the arthropod animals that live in coastal ecosystems and are one of the key species that have a very important role in maintaining ecological balance. Here the author refers to the abundance of ghost crabs and the types of food eaten by ghost crabs, this is because there are still many who do not know about the types of ghost crab hands and the abundance of ghost crab hands and the abundance of ghost crabs on an east aceh beach. The type of research used was quantitative research with a random sampling method which was carried out on November 25 2023. From the results of this crab density research, there were 100 individuals with a translation size of 254M and a density index of 1,96 D at 40 54’’ 9’ N 970 51’’ 2’ T. Aceh Regency Timur, the types of food for ghost crabs are Zooplankton, Phytoplankton and Bacterioplankton. The conclusion of this research is that the existence of this crab population is greatly influenced by the condition of the beach which is its habitat. Natural beaches usually find many ghost crabs because the food chain process is still maintained.
The Effect of Giving Tofu Dregs and Manure on The Growth of Pakcoy (Brassica rapa subsp. chinensis) Plants Juni Artika; Marjanah; Siska Rita Mahyuny
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.6168

Abstract

Pakcoy is a variety of mustard greens whose leaves are used as a vegetable. Pakcoy mustard greens are also often called spoon mustard greens because their shape resembles a spoon. The aim of this research was to determine which factors and chemical combinations had the greatest influence on the growth of pak choy (Brassica rapa subsp. chinensis) plants. Experimental methodology was used in this research's quantitative approach. There were 24 samples used in this research experiment, which included 6 treatments and 4 replications. Statistical analysis of variance (ANOVA) test was used in data analysis for this study. The hypothesis testing process then continues using data from the prerequisite tests, namely ordinariness test and homogeneity test. The results showed that tofu dregs and manure had no effect on the total fresh weight of harvested plants, but did affect plant height and number of leaves at 2 WAP and 6 WAP observations.including the addition of soil and manure, has the best composition for growth in plant height and wet weight of the entire crop.The combination of soil, tofu dregs and manure is a good treatment for increasing the number of leaves.The plant height parameter observed at 2 WAP and 4 WAP in treatments P3 and P1 was the as it were parameter that was altogether diverse between each treatment, based on the findings of the BNT test.
Morphological and Morphometric Identification of Amphibians (Rana) in Meurandeh Dayah Village, Langsa City Miduk Leonardo Tambun; Lusi Selvina Hutabarat; Sirem Suri; Nuryati; Siti Rhadiatun Mardiah; Ayu Wahyuni
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.6175

Abstract

Amphibians, categorized as vertebrate animals and characterized as poikilotherms, comprise three main groups known as Caudata, Gymnophiona, and Anura, with the latter commonly recognized as frogs or toads. The objective of this study is to examine the morphology and morphometrics of various frog species in Meurandeh Dayah Village, Langsa City. The research employs quantitative methods to facilitate a comparative analysis of each sample. The findings reveal the presence of six shutter species: Fejervarya cancrivora, Hylarana macrodactyia, Rana erythraea, Hylarana nicobariensis, Hyperolius horstockii, and Hylarana erythraea. The morphometric measurements conducted on these Rana species demonstrate distinctive morphological variations among them.
Growth Performances and Carcass of KUB Chicken Fed on A Diet Containing Different Levels of Fermented Mixture of Rice Bran and Protein from Slaughtered House Ade Akmaludin; Asnawi; Vebera Maslami; I Ketut Gede Wiryawan
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): Special Issue
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.v23i1.6176

Abstract

Rice bran is a common poultry feed ingredients. However, its use is limited due to its high fiber content and low phosphorus content. This study aimed to evaluate the effects of feeding a fermented mixture of rice bran and PSW (RPSW) on the growth performances and carcass of KUB chicken. A mixture of two parts of rice bran and one part of PSH was fermented using rumen liquor for 5 days. Two hundred two-week-old KUB chickens were randomly allocated into four dietary treatments with different levels of fermented RPSW i.e.; 0, 10, 20, and 30% for treatments 1, 2, 3, and 4 respectively. Feed was provided ad libitum for ten-week observation period, and drinking water was always available. At the end of the feeding trial, chickens were slaughtered to measure carcasses and their components. The results showed that there were no significant differences in feed consumption and carcass percentage between treatments, but the final body weight, body weight gain, carcass weight, and organ weight of chickens fed rations containing 20 and 30% fermented RPSH were lower than those fed rations containing 20 and 30% fermented RPSH. 30% fermented RPSH. The control or ration was fed a ration containing 10% fermented RPSH. The results indicate that a fermented blend of rice bran and protein from slaughtered house waste incubated with rumen liquor for 5 days can be included in the KUB chicken diet up to 10%.
Insecta Diversity on Peudawa Coast, East Aceh District Samsul Fajri; Sri Jayanthi; Khairunnisa Khairunnisa; Arini Shinta Zahara; Mardiah Mardiah
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.6178

Abstract

Peudawa Beach is one of the beaches in East Aceh or more precisely East Aceh Regency. Insects are  part of the coastal ecosystem. Insects are found in almost all ecosystems. Information on the insect diversity of the banks of Peudawa  has not been thoroughly studied. The purpose of this study is to see the diversity of insect species in Peudawa beach. The method used in this study is an exploratory descriptive research method. In this study, three techniques are used in data collection  technique, namely well drop technique, insect net technique and manual sorting technique. The Shannon-Wiever diversity index (Hand#039;) is used in the data analysis technique. The results of this study show that the insect diversity of Peudawa coast, East Aceh District belongs to the moderate diversity index category, which is influenced by the physical factors of the surrounding environment. The result was 22 insect species in 3 research  stations.
Diversity and distribution of Sargassum spp on Lombok Island Mursal Ghazali
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.6183

Abstract

Sargassum is a genus that grows naturally in waters with strong currents and rocky bottoms. This genus has high diversity and distribution, including on Lombok Island. This research aims to analyze the diversity and distribution of sargassum on Lombok Island. Research sampling was carried out in 15 locations spread across 4 districts on Lombok Island. Morphological diversity analysis was carried out using MVSP 3.1 software. Meanwhile, distribution is carried out by sampling the distribution in the waters of Lombok Island. The research results showed that the number of Sargassum species found was 4 species. Each species found from different sampling locations has variations with a similarity percentage of 52.8% to 100%. Sargassum was found in 15 sampling locations with the following details: Sargassum polycystum was found in five locations, Sargassum crassifolium in 5 locations, Sargassum cristaefolium in 7 locations, and Sargassum sp in 3 locations.
Identification of Aves Diversity in Samudra University Area Diyah Anjani; Adelia Putri; Lili Anna Sari Siregar; Meineta Tinambunan; Ayu Wahyuni
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): Special Issue
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.v23i2.6187

Abstract

Birds, or avians, are living organisms classified in the animal kingdom and share characteristic features such as a body covering of feathers that enables them to fly. Birds are also a biodiversity asset that needs to be conserved and preserved due to their significance and roles in human life. Samudra University, with its expansive grounds adorned with various trees, provides a potential habitat for birds. This research, conducted in October-November 2023, aims to explore the diversity of bird species within the Samudra University area. The study employs a quantitative descriptive method, covering four locations, Location I in the Faculty of Agriculture, Location II by the sea, Location III in the Student Building, and Location IV in the Faculty of Primary School Teacher Education. The findings reveal four avian species from four families in the Samudra University area: Passer montanus, Ardea alba, Geopelia striata, and Todirhampus chloris. The avian diversity index in that area is considered moderate.
Pathophysiology and Clinical Manifestations of Hypogonadism Nurma'rifatullah; Ni Made Meta Satya Buda Duarsa; Ranti Filarma Negara Purnama; Yumna Iftinan Khalda; Eva Triani
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): Special Issue
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.v23i1.6189

Abstract

Hypogonadism is a condition where the function of the gonad glands decreases, resulting in a decrease in hormone levels due to the hypothalamus-pituitary-gonad (HPG) axis. Hypogonadism occurs in approximately 2.1% – 12.8% of the middle-aged to older male population. This article was written to find out more about explaining the pathophysiology and clinical symptoms of hypogonadism. The method used is literature reflection combined with related search sources from the National Center for Biotechnology Information (NCBI), Google Scholar, and Research Gate. The results of a literature review of articles carried out can conclude that hypogonadism often causes symptoms of delayed puberty, loss of libido, erectile dysfunction, loss of muscle mass, and depression. Hypogonadism is also classified based on the reason into primary and secondary hypogonadism. Primary hypogonadism occurs due to gonadal dysfunction, while secondary hypogonadism occurs due to dysfunction of the hypothalamus and/or pituitary gland.

Page 147 of 252 | Total Record : 2520

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