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INDONESIA
Jurnal Natur Indonesia
Published by Universitas Riau
ISSN : 14109379     EISSN : 25030345     DOI : https://doi.org/10.31258/jnat
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry
Jurnal Natur Indonesia published since 1998, is a science journal that presents articles on research results, thoughts and views from researchers and experts in the field of biosciences (basic science), including biology, physics, chemistry and mathematics. In the field of biosciences (basic science); Biology, Physics, Chemistry, Mathematics.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 306 Documents
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Identification of Types and Abundance of Solid Waste in Pangkalan Jambi Village, Bengkalis Regency Ayu Septiani; Aras Mulyadi; Bintal Amin
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.63-68

Abstract

Various human activities to fulfill their welfare by producing food, drinks and other goods which in turn can generate solid waste and liquid waste. Solid waste often contaminates residential areas, coastal mangroves, and the aquatic environment. In addition, the mangrove coast which is used as a tourist area can also receive solid waste as a result of local activities. This study aims to identify the type and abundance of solid waste in Pangkalan Jambi Village, Bengkalis Regency. This research was conducted in Pangkalan Jambi Village, Bukit Batu District, Bengkalis Regency. The method in this study is a survey method. Sampling technique using the quadrant transect method, each station was drawn as many as 5 transects, each transect consisted of 5 plots with a quadrant plot size of 5 x 5 m2. The data analyzed included identifying the amount of solid waste, calculating the abundance of solid waste, analyzing the differences in the type and abundance of solid waste between stations and measuring environmental parameters. The results showed that the highest abundance of solid waste was obtained during the weekend at 3.15 units/m2. The second highest was before the weekend of 2.53 units/m2, the lowest solid waste was obtained during the weekend of 2.36 units/m2. Meanwhile, the highest weight of solid waste was found in the tourist area of the Mangrove Education Center (MEC), the second highest came from the community settlements of Pangkalan Jambi Village and the lowest was in the Mangrove Area of Pangkalan Jambi Village. The types of solid waste at the research location are plastic, metal, glass, rubber, wood, cloth and others
Survival and Growth of Pangasianodon hypopthalmus Fed with Moringa oleifera Enriched Pellets and Reared in Tank With Aquaponic System and Dark Condition Windarti Windarti; Sofyan Husein Siregar; Asmika Harnalin Simarmata; Joko Samiaji
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.1-6

Abstract

Pangasianodon hypophthalmus grows well in a dark tank completed with an aquaponic system.  To improve the growth, a feed supplement made from Moringa oleifera might be used as it is rich in protein, vitamins A, B, C, and minerals. To understand the effect of  M.oleifera addition in the feed of fish, research has been conducted in June-July 2022. M. oleifera leaves were dried and powdered and then mixed with commercial fish feed pellets. There were 4 treatments of M. oleifera dosages, namely T0 (no M. oleifera), T1 (10 g/kg), T2 (15 g/kg), and T3 (20 g/kg). The fish was reared in a 100L container (30 fishes/tank, around 4 g BW and 8 cm TL), covered with a dark-colored tarp, and completed with the aquaponic system using Ipomoea aquatica. The feed was given 2 times/day, ad libitum. Samplings were conducted once/10 days, for 40 days. Results showed that the survival of fish in all treatments was 93.3 – 98.89%. The growth of fish, however, was different. There was no difference in fish body weight (BW), total length (TL), and specific growth rate (SGR) of fish fed with Moringa, they were around 23.5 g BW, 5.8 cm TL, and 4.3 cm SGR respectively. While those of the control fish were 13.0 g BW, 4.23 cm TL, and 2.89% per day SGR respectively. The fish that was fed with Moringa-enriched pellets showed the highest Feed Efficiency (90.42-97.46%) and the lowest FCR (1.03 – 1.11). While in the fish that was not fed with Moringa showed the lowest   FE (75.48%) and the highest FCR (1.33%). Data obtained indicate that Moringa positively improves the growth of fish as well as improving feed efficiency
Kidney Structure of Pangasianodon hypophthalmus Fed with Fermented Red Ginger and Infection by Aeromonas hydrophila Morina Riauwaty; Windarti Windarti; Mariani Natalina Linggasari
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.36-41

Abstract

Red ginger contain antioxidant that can be used to enhance the immune system of fish. A study was conducted from September to December 2021 to understand the kidney structure of Pangasianodon hypophthalmus that fed with red ginger fermented pellets. The fermented red ginger juice was obtained by juicing 500 g of red ginger in 3L water, boiled and mixed with 175 ml molasses, 65 ml yogurt and 50 mg yeast and then was fermented for seven days. The fermented red ginger juice was obtained by juicing 500 g of red ginger in days. The fermented red ginger juice was mixed with fish feed pellets, namely T1 (150 mL/Kg), T2 (175 mL/Kg), T3 (200 mL/Kg), Cn (no red ginger juice and no infection), Cp (no red ginger juice and infection by A. hydrophila). The fish were reared in 30L aquaria. Fish sample was P. hypophthalmus fingerling (10-12 cm and 5-7 g), 10 fishes/aquarium. The fish were fed 3 time a day, adlibitum. In the 30th day, A. hydrophila was injected to the treated fish   (0.1.ml of 108 cells/ml, subcutan injection). In the 14th after the infection kidney sample was collected and processed for histological study. Result shown that there were differences in kidney tissue of fish in each treatment. The worst condition was obtain in Cp, while the best was in T2. The renal structure of Cp showed abnormalities such as hemorrhage, cell necrosis, enlarged Bowman's cyst, and tubular degeneration, while the T2 kidney showed mild lesions specifically haemorrhagic. This fact indicates that fermented red ginger can improve fish immunity against A. hydrophila infection
The Indication of Gastropods Extinctions at Intertidal Zone of the Teluk Nipah Waters, the Pesisir Selatan Regency the Province of the West Sumatera Afrizal Tanjung
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.69-74

Abstract

Intensive observation of gastropods, every March from the year 2008 to the year 2012, was carried out to document some indicators of gastropod extinction. The purposive sampling technic was used in this work. The physicochemical parameters of its habitat were also monitored during every sampling done.  It was found that the intertidal substrate consist of sand, while the habitat parameters were more than 5,6 mg/L dissolved oxygen, pH around 7,0-7,2, salinity 30,2-32,2 ppt, temperature 28,6-29,60C, the visibility 100%.  The number of species, the number of found gastropods, the abundance, and the maximum shell size of found gastropods showed decreasing from year to year, while routine collecting by the visitor and the marine organism shell collector, and the disturbance by the fisherman activities occurred. This indication showed a tendency for gastropods extinction
Growth, Mortality, Exploitation Rate, and Recruitment of Blood Clam (Anadara granosa) in the Rangsang Barat Waters, Riau Province Efriyeldi Efriyeldi; Ronal Kurniawan
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.7-14

Abstract

Growth, mortality, exploitation rate, and recruitment of Anadara granosa cockle in Rangsang Barat coastal waters were studied from July to October  2019. The objective of this research was to study growth. mortality. exploitation rate and recruitment of A granosa cockle. Sampling was done monthly at three main stations. The cockle collected from plot 1 x 1 m2  on quadrat transect. The result showed that the asymptotic length (L∞) of P. acutidens was 30.45 mm. annual growth coefficient (K) was 0.83 per year. The total mortality (Z)  was 4.46 per year.  natural mortalities (M) was 1.60  per year and fishing mortalities (F) was 2.86 per year. The rate of exploitation (E = 0.64) of blood clams in Rangsang Barat waters has begun to threaten sustainability. The recruitment occurred every month. the peaks occurred in July  (13.83 %) dan August (13.08 %).
Optimization of TDZ Hormone on the Formation of Somatic Embryogenesis in Dendrobium Orchids (D.50TH Stage Beauty X D. Bobby Mesina) Didik Pudji Restanto; Iqbal Felayati; Wahyu Indra Duwi Fanata; Parawita Dewanti; Budi Kriswanto; Mohammad Nur Khozin; Mohammad Candra Prayoga
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.42-46

Abstract

The Dendrobium variety orchid is a plant that has rare potential and growth. This requires large amounts of seeds that can be propagated in vitro. This study aims to determine the effect of TDZ on the direct induction of somatic embryogenesis. The study was conducted using a completely randomized design (CRD) with one factor, namely media consisting of basal Murashige and Skoog (MS) media with growth regulator TDZ. Each treatment out of a total of seven treatments was repeated four times. The research was carried out from March 2022 to August 2022. The results showed that leaf explants (clonal) could only be induced in 2 treatments (1 mg/L and 1.5 mg/L) out of 28 experimental media treatment units. The earliest callus appeared in the 1 mg/L treatment with a growth time of 90 days after planting (DAP) and the earliest PLB appeared in the 1.5 mg/L treatment with a growing time of 45 days after planting (DAP), the percentage of explant growth that became PLB with 1.5 mg/L treatment resulted in a percentage of 20 % and the percentage of callus growth at 1 mg/L yields a percentage of 20%.
Feasibility Assessment of Mangrove in Two Villages on Bengkalis Island for Ecotourism Aryodamar Muhammad Jati; Nurul Qomar; Defri Yoza
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.75-80

Abstract

Mangroves are a unique ecosystem that has an important role both bio-physically and socio-economically. Unfortunately, this ecosystem has suffered damage due to various forms of unwise use. Alternatively, the use of mangroves for ecotourism is often seen as more environmentally friendly and sustainable. On the other hand, some factors limit the success of mangrove ecotourism management. One of the most important factors is the feasibility of the mangrove itself as a capital for ecotourism. This study aims to evaluate the characteristics of mangroves in two villages on Bengkalis Island as ecotourism resources and to analyze their suitability as an ecotourism attraction. Data were collected through direct observation and interviews in Kuala Alam and Pematang Duku Village in Bengkalis District, Bengkalis Regency, Riau Province. The feasibility is analyzed using the Tourism Suitability Index (TSI) based on parameters that have been set by the TSI. The mangroves in Kuala Alam have an average cover thickness of 337 m, with a density of 300 trees/ha, which are composed of nine tree species. Mangroves in Pematang Duku have an average cover thickness of 948 m, with a density of 500 trees/ha, consisting of 14 tree species. The mangrove fauna found in the two villages is generally the same, as with the tidal pattern. The mangroves in Kuala Alam Village achieve a score of 1.75 which means they do not have tourism suitability (TSI<2) while mangroves in Pematang Duku achieve a score of 2.38 which meet the criteria to develop mangrove ecotourism (TSI>2).
Study of Potential and Marine Ecotourism Development at Pasir Jambak Beach Padang City Putri Hanryani; Syafruddin Nasution; Dessy Yoswaty
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.15-20

Abstract

Marine tourism is a tourism activity based on marine aspects in coastal and marine waters Pasir Jambak Beach is one of the areas that have the potential to be developed into a marine ecotourism object in Padang City. The purpose of this research was to find out the main marine ecotourism object owned by Pasir Jambak Beach, its support capability, and its development strategy. This research was conducted from July to October 2022 at Pasir Jambak Beach, Pasir Nan Tigo Village, Koto Tangah District, Padang City, West Sumatra Province. The method used was a survey method with the observation of the tourism objects that existed at Pasir Jambak beach, measuring the area large which could be utilized and interviewing the tourism businessmen. The results showed that the main marine ecotourism object of Pasir Jambak Beach is the beauty of the beach scenery with clear waters, clean, fine, and sloping sand, and the phenomenon of sunset. The total carrying capacity that can be physically accepted by Pasir Jambak beach is 26,490 people per day with different activities and times. Based on SWOT analysis, the ecotourism development strategy for Pasir Jambak beach is: (1) Development of marine tourism with the concept of ecotourism (2) Increase tourism promotion and improve the quality of human resources through education and training. (3) Form a special team to supervise marine ecotourism development activities, and develop research and conservation potential (4) Organize counseling on the importance of environmental conservation, the dangers of pollution, natural disaster management, and the development of creative industries.
Supplementation of Turmeric Flour on Survival of Asian Redtail Catfish (Hemibagrus Nemurus) Desi Rahmadani Siagian; Benny Heltonika
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.47-54

Abstract

Asian redtail catfish culture activities are still constrained by the low survival rate in the seeds phase, one of the causes is cannibalism behavior. Several attempts have been made to improve the survival of these fish, and several studies have shown that turmeric powder can increase survival in several species. Based on this, this study aimed to evaluate the addition of turmeric flour with the coating method on the survival rate of Asian redtail catfish (Hemibagrus nemurus) seeds. This study used a completely randomized design using four treatments and was repeated three times. The treatment used was the supplemented turmeric flour to commercial feed which had a protein of 40%., the treatments were 0.0 g kg-1 (K), 2.5 g kg-1 (TK2.5), 5.0 g kg-1 (TK5.0), and 7.5 g kg-1 feed (TK7.5). The size of the Asian redtail catfish was 2.09±0.17 cm, with a stocking density of 3 L-1, and reared in an aquarium measuring 38x25x22 cm3. The study was conducted for 30 days and fed at satiation four times a day. The parameters measured were survival, cannibalism (cannibal type, cannibal index, normal death), and growth performance (absolute weight, absolute length, specific weight growth, and specific length growth). The results showed that TK5.0 was able to increase the survival rate and decrease the cannibalism index and normal death rate. Furthermore, the supplemented turmeric flour did not have an impact on the absolute weight, absolute length, specific growth rate, and specific length.
The Carrying of Capacity of the Pangkal Babu Mangrove Forest on the Abundance of Fish Resources and the Economy of the People of Tungkal Satu Village, Tanjung Jabung Barat Tedy Azmi Nasution; Tedjo Sukmono; Rifli Rindes; Hutwan Syarifuddin; Darlim Darmawi; Ucop Haroen
Jurnal Natur Indonesia Vol 21, No 1 (2023): April 2023
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.21.1.21-28

Abstract

The Pangkal Babu Mangrove Forest has an important role in a fish habitat that is closely related to the livelihoods of fishermen so it has an overall economic relationship. This study aims to analyze the condition of mangrove forests, the triangulation relationship between mangrove forests and fish resources, and the community's economy as well as forms of local wisdom in protecting and preserving mangrove forests. This research was conducted in the Pangkal Babu Mangrove forest area, Tungkal Ilir District, West Tanjung Jabung Regency. The method in this study is a survey method. The sampling technique for the condition of the mangrove forest was using the Line Transect Plot method at 3 different stations. The data analyzed included the density of mangrove forests, fishery resources, the economy, and the local wisdom of the community. The results showed that at station I the condition of mangrove vegetation in Pangkal Babu was in moderate criteria with 1,467 trees/ha, station II was in very dense criteria with 3,367 trees/ha, and station III was in moderate criteria with 1,000 trees/ha. Fishery production for 5 years is 93,221 kg with many trips of 2,115 and a CPUE value of 44.13 kg/trip. Fishery production has exceeded the sustainable potential both biologically (MSY = 82,297 kg) and economically (MEY = 82,296 kg). The value of the coefficient of determination (R2) is 0.82 or 82%, which indicates that the fluctuation in fishery production is caused by the area of mangrove forests by 82%.

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