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All Journal HAYATI Journal of Biosciences Jurnal Akuakultur Indonesia Jurnal Ilmu Dasar Protobiont: Jurnal Elektronik Biologi Jurnal Biologi Tropis JURNAL PENGABDI Biosaintifika: Journal of Biology & Biology Education Jurnal Penelitian Perikanan Indonesia Jurnal Labora Medika Jurnal Riset Biologi dan Aplikasinya Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Life Science Life Science
Ari Hepi Yanti
Program Studi Biologi, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Tanjungpura Jalan Prof. Dr. H. Hadari Nawawi, Pontianak
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Control & Systems Engineering Earth & Planetary Sciences Education Energy Environmental Science Health Professions Immunology & microbiology Mathematics Mechanical Engineering Medicine & Pharmacology Social Sciences

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Habitat Characteristic of Softshell Turtle (Amyda cartilaginea Boddaert,1770) in Engkelitau River Sekadau Regency, West Borneo Arbi, Florensius Joko; Yanti, Ari Hepi; Riyandi, Riyandi
Jurnal ILMU DASAR Vol 22 No 1 (2021)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v22i1.17041

Abstract

Information about the character of softshell turtle’s habitat (Amyda cartilaginea) is needed as conservation effort and to prevent softshell turtle’s extinction. The research on habitat, morphometric holes, and environmental factors that suitable for softshell turtle is needed to be approved. The research was conducted in Engkelitau River, Sekadau, West Borneo. Sampling area was divided into 3 stations based on the type of cover between primary dryland forest, farming land and open field. Data on the softshell turtle’s number, holes and scratch marks were analyzed using principal component analysis (PCA). The highest river slope at Station I is 60o and the lowest river slope at Station III is 42o. Substrate’s type that found in Engkelitau River consist of sandy, dusty, and muddy substrates. The number of softshell turtle’s hole in the Engkelitau River is 45 holes, consisting one hole with softshell turtle, 15 holes with scratch marks, and 29 holes not including both of them. The highest height, width and distance between holes are in Station I and both hole’s length and height from the surface as well as highest river are in Station II. The environmental factors that affected A. cartilaginea in the Engkelitau River consisted of river velocity and river’s slope with loading factors of 4.08135 and 3.94019 respectively. The characteristics of A. cartilaginea’s hole in the Engkelitau River including a pond in the hole, an air hole, and located in the middle of a riverbank. Keywords: habitat characteristics, Amyda cartilaginea, softshell turtle, Engkelitau river.
Scale brightness of common goldfish on diet supplemented with seaweed Sargassum sp. and pumpkin Cucurbita moschata Astari, Irfina Manda; Setyawati, Tri Rima; Yanti, Ari Hepi
Jurnal Akuakultur Indonesia Vol. 15 No. 1 (2016): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3247.364 KB) | DOI: 10.19027/jai.15.80-88

Abstract

ABSTRACT The common goldfish Carassius auratus auratus is an ornamental freshwater fish species with  high market value. The market value of ornamental fish can be determined through some parameters, one of them is brightness of the fish scales. Brightness level may be enhanced by supplementing plant powder containing carotenoid into fish diet. The purpose of this research was to examine the scale brightness level of common goldfish fed diet supplemented with Sargassum sp. and pumpkin powder, and to determine the dose of those powders that allows higher brightness level of scale.  The feed of common goldfish was supplemented with either Sargassum sp. or pumpkin powder at the doses of 10, 20 and 30%, and without supplementation as control. Fishes were reared for 75 days and fed diet at feeding rate of 5% biomass daily. The results of ANOVA test showed that the Sargassum sp. and pumpkin mill addition on food significantly improved of scales brightness of  common goldfish. Increasing supplementation levels of Sargassum sp. and pumpkin powder increased brightness level of scale. The highest improvement in brightness was the fish that fed by 30% concentration of Sargassum sp. flour with the value scale of brightness was 2.67 and the total number of 2,890.67 chromatophore cells. The results suggest that Sargassum sp. powder is better to improve the brightness level of common goldfish scale. Keywords: Carassius auratus auratus, Sargassum sp., Cucurbita moschata, carotenoid, brightness  ABSTRAK Ikan komet Carassius auratus auratus merupakan salah satu spesies ikan hias air tawar yang memiliki nilai jual tinggi. Nilai jual ikan hias dapat ditentukan melalui beberapa parameter, salah satunya yaitu kecerahan sisik ikan. Kecerahan sisik ikan dapat ditingkatkan melalui pemberian pakan yang diperkaya karotenoid. Tujuan penelitian ini adalah menguji tingkat kecerahan warna sisik ikan komet setelah diberi pakan dengan tambahan tepung Sargassum sp. dan labu kuning, dan menentukan dosis masing-masing tepung tersebut yang memberikan tingkat kecerahan tertinggi pada sisik ikan komet. Pakan ikan komet ditambahkan dengan tepung Sargassum sp. atau tepung labu kuning sebanyak 10, 20 dan 30%, serta tanpa suplementasi sebagai kontrol. Ikan dipelihara selama 75 hari dan diberi pakan uji sebanyak 5% biomassa setiap hari. Hasil uji ANOVA menunjukkan bahwa penambahan tepung Sargassum sp. dan labu kuning berpengaruh nyata terhadap peningkatan kecerahan sisik ikan komet. Semakin tinggi kadar tepung Sargassum sp. dan labu kuning yang ditambahkan ke pakan, maka semakin tinggi tingkat kecerahan sisik ikan komet. Tingkat kecerahan tertinggi terjadi pada ikan komet yang diberi pakan tambahan berupa tepung Sargassum sp. sebesar  30% dengan nilai kecerahan 2,67 dan jumlah kromatofor sebanyak 2.890,67 sel. Hal tersebut menunjukkan bahwa Sargassum sp. lebih bagus digunakan untuk meningkatkan kecerahan sisik ikan komet daripada labu kuning. Kata kunci: Carassius auratus auratus, Sargassum sp., Cucurbita moschata, karotenoid, kecerahan
The Therapeutic Potential of Humic Acid in Streptozotocin-Induced Hyperglycemic White Rats (Rattus norvegicus L.) Sirait, Evi Marina; Rousdy, Diah Wulandari; Yanti, Ari Hepi
Jurnal Riset Biologi dan Aplikasinya Vol. 7 No. 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrba.v7n1.p110-117

Abstract

Humic acid, an organic compound from peat soil, rich in antioxidants such as quinone and phenol, shows potential as an antidiabetic agent. This study aims to identify the optimal dose of humic acid extract for increasing body weight, lowering blood glucose levels, reducing malondialdehyde (MDA) levels, and improving the microanatomical structure of the pancreas in streptozotocin-induced diabetic rats. The humic acid was extracted from peat soil at Tanjungpura University. The study utilized 25 male Wistar rats (Rattus norvegicus), aged 8-12 weeks, organized in a group randomized design (GRD). Interventions included a single dose of streptozotocin (40 mg/kg b.w.) and varying doses of humic acid extract administered over 14 days post-induction. Results indicated that a dose of 375 mg/kg b.w. humic acid extract resulted in an increased final body weight by 11.86%, a reduction in fasting blood glucose levels by 79.23%, an AUC0-120 value of 19.311, and a final MDA level of 1.09 ±0.27 nmol/ml. These findings indicate the potential of humic acid as a therapeutic agent for diabetes.
Immune Response of Nipah Worms (Namalycastis rhodochorde) Following Injection of Pseudonocardia spp.: Indonesia Wiranata, Aufar Ismi; Dea, Uray; Nabila, Vioni Talitha; Putri, Fiqih Fazira; Wibowo, Raynata Zwietenia; Yanti, Ari Hepi
Jurnal ILMU DASAR Vol. 26 No. 2 (2025)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jid.v26i2.53694

Abstract

The nipah worm (Namalycastis rhodochorde) is a Polychaete species found in the nipah (Nypa sp.) mangrove ecosystem of West Kalimantan. Since its identification in 2007, research on this species has been limited. Nipah worms play a crucial role in trophic levels, serving as a food source for various aquatic animals due to their high nutritional content. Although attempts have been made to cultivate nipah worms, these efforts are still hindered by disease outbreaks, one of which is caused by a bacteria. This study aims to investigate the immune response of nipah worms following induction with Pseudonocardia spp. isolated from nipah fronds. The research methodology included the preparation of tools and materials, acclimation of nipah worms, reculturing of Pseudonocardia spp. and the creation of test suspensions, as well as the calculation of the total and differential counts of coelomocytes before and after bacterial induction. The results indicated an increase in the number of several types of coelomocytes in nipah worms, specifically type I by 53,2%, type III by 54%, type IV by 56,2%, and type V by 61,4% after induction with Pseudonocardia spp.
Growth Respone of Bara Variety (Capsicum Frustencens) to Heavy Metal Stress of Cadmium Sulfate (CdSO4) Oktaviani, Riska; Mukarlina; Linda, Riza
Jurnal Biologi Tropis Vol. 24 No. 1 (2024): Januari - Maret
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.v24i1.6216

Abstract

Cadmium is a non-essential heavy metal that is toxic to plants. This study aims to determine the growth response of cayenne pepper var bara plants on planting media treated with different concentrations of cadmium sulfate heavy metal stress (CdSO4). This research was conducted at the Biology Laboratory of the Department of Biology, Faculty of Mathematics and Natural Sciences, Tanjungpura University Pontianak, Chlorophyll Test was conducted at the Integrated Biology Laboratory UPT, Tanjungpura University Pontianak, and soil analysis tests were conducted at the Chemistry and Soil Fertility Laboratory, Faculty of Agriculture, Tanjungpura University, Pontianak. This study used a completely randomized design (CRD) with 4 treatment levels of cadmium sulfate concentration, namely control (0 ppm), 80 ppm, 120 ppm, and 160 ppm. Data were analyzed using one-way Anova followed by Duncan test with 95% confidence level. The results showed that the administration of heavy metal cadmium sulfate (CdSO4) at the lowest concentration of 80 ppm had a significant effect on the growth of cayenne pepper var bara, namely leaf area, dry weight and chlorophyll content, while the 120 and 160 concentration treatments had a significant effect on the growth of cayenne pepper var bara plants, namely plant height, and wet weight.
Undesirable Microbial Growth from The Biodegradation Process of Nypa Palm Fronds Suplemented with Cellulolytic Bacteria Culture Isolated from Nypa Palm Worms (Namalycastis rhodochorde) Williem, Albertus; Kurniatuhadi, Rikhsan; Setyawati, Tri Rima; Yanti, Ari Hepi
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.6724

Abstract

Biodegradation of nipa palm fronds using cellulolytic bacteria on an in-vitro scale was conducted to produce feed for cultivating palm worms (Namalycastis rhodochorde). The spontaneous degradation process is thought to trigger the growth of other microbes from raw materials from unsterilized nypa palm fronds. This research aims to determine the presence of different microbes that participate in the degradation process of palm fronds supplemented with cellulolytic bacterial isolates. The biodegradation process was conducted using dry palm fronds that were not sterilized, without pressurized heat, for 30 days in a sterile container. Cellulolytic bacterial isolates were added to facilitate the process. The research results revealed three characteristics of bacterial colonies with two cell shapes: bacilli and spirals bacterial isolates. The study also identified the presence of protozoa that exhibited morphological similarities to the Ciliophora group. This research provides valuable reports for further studies on the biodegradation process of palm fronds, specifically about ensuring feed safety for cultivating nypa palm worms.
Keanekaragaman Jenis Ikan di Danau Tang Desa Penepian Raya Kabupaten Kapuas Hulu Romini, Romini; Riyandi, Riyandi; Yanti, Ari Hepi
Life Science Vol 12 No 1 (2023): May 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/lifesci.v12i1.66274

Abstract

Keanekaragaman ikan sangat dipengaruhi oleh kondisi lingkungan. Aktivitas manusia merupakan faktor terbesar yang menyebabkan terjadinya perubahan keanekaragaman dan distribusi ikan. Penelitian ini bertujuan untuk mengetahui keanekaragaman jenis ikan dan faktor yang memengaruhi keanekaragaman ikan di Danau Tang Desa Penepian Raya Kabupaten Kapuas Hulu. Penelitian ini menggunakan metode survei, dan pengambilan sampel menggunakan metode purposive random sampling. pengambilan sampel ikan dilakukan menggunakan variasi alat tangkap yang terdiri dari rawai, jala, pukat dan bubu payung. Hasil penelitiaan ini mencatat sebanyak 14.159 individu dari 53 jenis, 32 genus dan 14 famili. Indeks keanekaragaman Shannon-winner berkisar antara 1,28-2,48 (rendah-sedang). Keanekaragaman tertinggi terjadi pada stasiun 1 yang merupakan inlet menuju danau. Faktor fisika dan kimia yang paling berpengaruh di Danau Tang yaitu kecerahan, karbondioksida dan suhu air.
Pertumbuhan Maggot Hermetia illucens L. pada Media Kombinasi Bungkil Kelapa Sawit yang Difermentasi dan Dedak Padi Yanti, Ari Hepi; Rahmanisya, Afifah; Saputra, Firman
Life Science Vol 13 No 1 (2024): May 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/lifesci.v13i1.75978

Abstract

Maggot Hermetia illucens is the larval phase of the black soldier fly. This study aims to analyze the development of maggots in the form of length, body weight and population density in a combination of fermented oil palm meal and rice bran. The study used a Complete Randomized Design (RAL) with 5 treatments and 5 repeats for 21 days, namely 100% oil palm meal, 75% oil palm meal and 25% rice bran, 50% oil palm meal and 50% rice bran, 25% oil palm meal and 75% rice bran, and 100% rice bran. Random sampling is used for data collection. The length of the maggot's body is measured using a digital caliper. The total weight of the maggots on each treatment on the 21st day was weighed for weight measurement. Density is measured by counting the number of individuals per volume of media. Data were analyzed with single-track ANOVA and Tukey test. The results showed significant growth of Hermetia illucens maggots (p = 0.000) using a combination of fermented oil palm meal media and rice bran. The combination of 75% oil palm meal and 25% rice bran has a significant effect with the highest length for 21 days at 27.56 mm, a total weight of 34.86 grams. Its population density is insignificant.
Kepadatan Bakteri Biofertilizer Cair Air Kelapa Menggunakan Bakteri Pelarut Fosfat (Bacillus spp.) Asal Tanah Gambut Kalimantan Barat: Density of Liquid Biofertilizer Coconut Water Bacteria Using Phosphate Solubilizing Bacteria (Bacillus spp.) from West Kalimantan Peat Soil Sari, Lala; Rahmawati; Khotimah, Siti; Mukarlina
Life Science Vol. 14 No. 1 (2025): May 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/unnesjlifesci.v14.i1.1673

Abstract

Biofertilizer is an environmentally friendly fertilizer, has a long release time so it can be absorbed by plants long enough, and has enzymatic activities such as binding nitrogen and dissolving phosphate. Phosphate solubilizing bacteria (BPF) can dissolve phosphate that was previously unavailable to become available. This research aims to further examine the potential of BPF isolates from Kalimantan as a liquid biofertilizer agent using coconut water as a medium. The research was conducted for 3 months, from June to August 2023 at the Microbiology Laboratory, Biology Department, Faculty of Mathematics and Natural Science Tanjungpura University, Pontianak. This research used a Completely Randomized Design (CRD) with 8 treatments and 3 replications using the Total Plate Count method. The results of the study showed that the highest treatment is a treatment of A4 on day 6 with an average density of 9,4x108 CFU/mL. The BPF which has the highest potential as a biofertilizer is found in treatment A4, the combination bacterial isolates of Bacillus sp1 and Bacillus sp2, supported by the high population treatment of A4 during each storage. Liquid biofertilizers have many advantages compared to solid biofertilizers, including having a higher number of microbial cells, longer shelf life, greater protection against the environment and better effectiveness in the field. This study can provide information on the density of liquid biofertilizer bacteria using environmentally friendly coconut water media for the community by using phosphate-solubilizing bacteria (Bacillus spp.) from West Kalimantan peat soil.
Potensi Bakteri Pelarut Fosfat dan Bakteri Penghasil IAA Asal Tanah Gambut terhadap Perkecambahan  Tanaman Jagung (Zea mays L.) Anggita, Via; Khotimah, Siti; Rahmawati; Mukarlina
Life Science Vol. 13 No. 2 (2024): November 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/unnesjlifesci.v13.i2.1729

Abstract

Phosphate solubilizing bacteria and IAA-producing bacteria are bacteria that can help plant growth through their use by increasing the availability of phosphate (P) in the soil and helping plants absorb nutrients in the soil. This study aims to determine the effect of phosphate solubilizing bacteria and IAA-producing bacteria isolated from peat soil on the germination of corn (Zea mays L.) plants grown on peat soil.  This research was conducted from June to September 2023 with a completely randomized design (CRD). Testing the effect of phosphate-solubilizing and IAA-producing bacteria was carried out using the method of soaking seeds and watering bacterial suspensions on plants.  The results showed that A5 treatment had a significant effect on the number of leaves parameter, with A5 treatment (Bacillus cereus PF12, P13 and PF16 + Pseudomonas stutzeriIAA1) producing a germination percentage (100%), the number of leaves (5.09 strands) while the parameters of plant height and root length showed that all treatments were not significantly different.    
Co-Authors Amriani Amir Anggita, Via Arbi, Florensius Joko Barrata Barrata Dea, Uray Desriani Lestari Diah Pratiwi Diah Wulandari Rousdy Edi Kurniadi Edo, Febry Valianto Elvi Rusmiyanto Pancaning Wardoyo, Suci Lestari, Mukarlina, Esta Br Tarigan Firman Saputra Hamidah, Kamisah Nurul Herina Marlisa Ikramullah, Fiza Irfina Manda Astari, Irfina Manda Irwan Lovadi Junardi Junardi Kustiati Kustiati Mukarlina, Mukarlina Nabila, Vioni Talitha Neva Satyahadewi OKTAVIANI, RISKA Putri, Fiqih Fazira Rafdinal Rafdinal Rahmanisya, Afifah Rahmawati Rahmawati, Rahmawati Rikhsan Kurniatuhadi, Rikhsan Ristanto, Andi Riyandi Riyandi Riza Linda Romini, Romini Saputra, Firman Sari, Lala Sinaga, Lia Resa Sirait, Evi Marina Siti Ifadatin Siti Khotimah Syahir, Sutan Tri Rima Setyawati Turnip, Masnur Wibowo, Raynata Zwietenia Williem, Albertus Wiranata, Aufar Ismi Wirda Andani YPandayu Putra, Harits Yowansyah Zulfa Zakiah