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Molecular identification of sharks and rays species from Aceh waters, Indonesia Mutia Ramadhaniaty; Maria Ulfah; Indra Indra; Nur Fadli; Nanda Muhammad Razi
Depik Vol 12, No 1 (2023): APRIL 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Shark is a cartilaginous fish that is widely hunted because it has high economic value. The waters of Aceh are directly adjacent to the Indian Ocean and the Malacca Strait making it a preferred habitat for pelagic fish, especially sharks. Information on shark species landed in the waters west and east of Aceh is very limited due to difficulties in identification and commonly used local names. This study aimed to determine the types of sharks landed in Banda Aceh, Meulaboh, Langsa, Southwest Aceh and Simeulu and to find out specifically what species of sharks are most often landed in Aceh waters. Primary data gathering consisted of four stages, namely sample collection, identification using identification books, molecular identification cytochrome oxidase subunit I (COI) and phylogenetic analysis. The results of the molecular analysis of 46 tissue samples from five locations identified 13 species of sharks, namely Carcharhinhus sorrah, Carcharhinhus amboinensis, Triaenodon obesus, Isurus oxyrinchus, Sphyrna zygaena, Sphyrna lewini, Loxodon macrorhinus, Hemipristis elongaria, Stagostoma fasciatum, Nebrius ferrugineus, Chilloscyllium punctatum, Isurus oxyrinchus, Alopias pelagicus, Alopias supercillosus and 1 species of rays, namely Rhynchobatus australiae. Phylogenetic tree reconstruction using the Neighbor Joining method of 610 basepairs consisting of two large clades separates the species Alopias pelagicus and Isurus oxyrichus with Carcharhinus sorrah, Sphyrna lewini, Loxodon macrorhinus and Rhyncobatus australiae with boostrap values of 87% and 64%. The haplotype diversity shown ranged from 0.667-0.889 while the nucleotide diversity ranged from 0.001-0.097. These values indicates high diversity because of the variance in the number of species found.Keywords:BarcodeCOISharks catchAlopias supercillosusSphyrna lewini

Effect of transplantation media on Pocillopora coral growth rate at TWAL Pulau Weh Chitra Octavina; Maria Ulfah; Adrian Damora; Zulkarnain Jalil; Nanda Muhammad Razi; Muhammad Agustiar; Puad Batari Harahap; Nurul Najmi; Samsul Bahri; Munandar Munandar; Shan-Yin Vanson Liu
Depik Vol 10, No 2 (2021): August 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Coral reef ecosystems have a vital role in waters so that damage to coral reef ecosystems can reduce ecological and socio-economic functions that can impact environmental imbalances, such as reef fish and benthic communities. This study aims to determine the effect of transplant media on the growth rate of the genus Pocillopora coral and see whether it has a significant effect on the rate of coral growth in TWAL Pulau Weh, Aceh Province. The method used is a purposive sampling method in determining stations, analysis using the ImageJ 1.52 application. The results showed that the effect of transplant media on the growth rate of Pocillopora corals were significant differences between structures given an electric current and those not given an electric current with a 95% confidence interval. The average growth value of Pocillopora corals given an electric current is 25.06 mm/month. While the Pocillopora corals that were not given an electric current average growth value was 16.50 mm/month.Keywords:Coral reefCoral transplantElectrical stimulationPocilloporaImagej

Effect of transplantation media on Pocillopora coral growth rate at TWAL Pulau Weh Chitra Octavina; Maria Ulfah; Adrian Damora; Zulkarnain Jalil; Nanda Muhammad Razi; Muhammad Agustiar; Puad Batari Harahap; Nurul Najmi; Samsul Bahri; Munandar Munandar; Shan-Yin Vanson Liu
Depik Vol 10, No 2 (2021): August 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.2.19222

Coral reef ecosystems have a vital role in waters so that damage to coral reef ecosystems can reduce ecological and socio-economic functions that can impact environmental imbalances, such as reef fish and benthic communities. This study aims to determine the effect of transplant media on the growth rate of the genus Pocillopora coral and see whether it has a significant effect on the rate of coral growth in TWAL Pulau Weh, Aceh Province. The method used is a purposive sampling method in determining stations, analysis using the ImageJ 1.52 application. The results showed that the effect of transplant media on the growth rate of Pocillopora corals were significant differences between structures given an electric current and those not given an electric current with a 95% confidence interval. The average growth value of Pocillopora corals given an electric current is 25.06 mm/month. While the Pocillopora corals that were not given an electric current average growth value was 16.50 mm/month.Keywords:Coral reefCoral transplantElectrical stimulationPocilloporaImagej

Diversity of commercially important grouper (Family: Epinephelidae) in Simeulue and Banyak Islands, Aceh, Indonesia Nanda Muhammad Razi; Zainal A. Muchlisin; Mutia Ramadhaniaty; Adrian Damora; Firman M. Nur; Mohd Nor Siti-Azizah; Nur Fadli
Depik Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.1.23790

Grouper is one of the economically important fish groups in the Simeulue and Banyak Islands. However, data on the diversity of the grouper in this region is still limited. This study aimed to inventory the commercially important grouper in Simeulue and Banyak Islands. Sampling was carried out in April - September 2021 at sixteen locations around Simeulue and Banyak Islands. In total, 20 species of commercial grouper consisting of 6 genera were recorded during the study. Epinephelus was the most dominant genus with ten species, followed by Cephalopholis with four species. In addition, seventeen species (85%) were included in the Least Concern (LC), two species (10%) were categorized as Vulnerable (VU), and one species (5%) was Data Deficient (DD). This study provides a database of commercially important grouper in Simeulue and Banyak Islands that can be used to manage the fish group.

Diversity of commercially important grouper (Family: Epinephelidae) in Simeulue and Banyak Islands, Aceh, Indonesia Nanda Muhammad Razi; Zainal A. Muchlisin; Mutia Ramadhaniaty; Adrian Damora; Firman M. Nur; Mohd Nor Siti-Azizah; Nur Fadli
Depik Vol 11, No 1 (2022): April 2022
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.11.1.23790

Grouper is one of the economically important fish groups in the Simeulue and Banyak Islands. However, data on the diversity of the grouper in this region is still limited. This study aimed to inventory the commercially important grouper in Simeulue and Banyak Islands. Sampling was carried out in April - September 2021 at sixteen locations around Simeulue and Banyak Islands. In total, 20 species of commercial grouper consisting of 6 genera were recorded during the study. Epinephelus was the most dominant genus with ten species, followed by Cephalopholis with four species. In addition, seventeen species (85%) were included in the Least Concern (LC), two species (10%) were categorized as Vulnerable (VU), and one species (5%) was Data Deficient (DD). This study provides a database of commercially important grouper in Simeulue and Banyak Islands that can be used to manage the fish group.

The Current Condition of Coral Reef and Fish Diversity in Gosong Island, Southwest Aceh Nurul Najmi; Ananingtyas S. Darmarini; Nanda Muhammad Razi; Mai Suriani; Samsul Kahar
Jurnal Ilmiah Perikanan dan Kelautan Vol. 15 No. 1 (2023): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v15i1.35917

Highlight Research The current condition coverage percentage of coral reefs in the waters of Gosong Island was 55% Percentage of dead coral with algae founded on Gosong Island is 28% On Gosong Island there are 11 families, namely Acroporidae, Agariciidae, Faviidae, Fungiidae, Merulinidae , Mussidae, Dendrophylliidae, Oculinidae, Pectiniidae, Pocilloporidae and Poritidae Abstract The coral reef ecosystem is an important ecosystem; its existence has a very close relationship with the surrounding ecosystem and the reef fish community. The direct and indirect dependence of reef fish on coral reefs has become an important issue at the national and international levels. This study aimed to determine the characteristics of coral reef ecosystem conditions, the percentage of coral growth, identify the types of coral reefs, and the diversity of reef fish species on Gosong Island, Southwest Aceh. Coral reef biophysical characteristics were collected by measuring water quality, calculating the percentage of coral coverage using the Point Intercept Transect (PIT) method, and the abundance of reef fish using the Underwater Fish Visual Census (UFVC) method. The condition of average percentage of coral reefs in the waters of Gosong Island was in a good category (55%), found as many as 31 genera of hard corals included in the line transect. The percentage of base substrate that dominates other than live coral is dead coral with algae (DCA) of 28%. The average abundance of reef fish in Gosong Island waters is 11,260 ind/ha with an average reef fish biomass of 2074,095 kg/yield. The water quality results show good conditions for coral growth in location. Based on the analysis of the structure of the fish community found in the coral reef area, the results showed good results, so the research location became a good habitat for various types of fish associated with coral reef ecosystems on Gosong Island

DNA Barcoding of Six Commercially Important Groupers (Epinephelidae) from Langsa, Aceh, Indonesia Fadli, Nur; Jumiati, Sri; Razi, Nanda Muhammad; Damora, Adrian; Muchlisin, Zainal A.; Dewiyanti, Irma; Ramadhaniaty, Mutia; Harnelly, Essy; Habib, Ahasan; Siti-Azizah, Mohd Nor
HAYATI Journal of Biosciences Vol. 31 No. 2 (2024): March 2024
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.31.2.328-335

Groupers are among the fish groups that are difficult to recognize due to their high morphological similarities. Therefore, molecular techniques, particularly DNA barcoding, are extensively utilized to differentiate this fish group. This study aimed to analyze and validate six grouper species belonging to the Epinephelidae family that were harvested from Langsa district waters in Aceh province, Indonesia, based on DNA barcode data. It was conducted from June to December 2021, with the fish specimens collected from fishers at fish landing sites and the fish market in Langsa City, Aceh province. A total of 22 grouper sequences belonging to six species were generated, namely Epinephelus coioides, E. bleekeri, E. malabaricus, E. erythrurus, E. sexfasciatus and Mycteroperca poecilonotus (formerly Epinephelus poecilonotus). Genetic distance within these species ranged from 0.10 to 0.73% (average: 0.40%). Notably, E. malabaricus and E. coioides exhibited the closest genetic kinship (4.07%), while E. sexfasciatus and M. poecilonotus displayed the greatest genetic distance (19.33%). This study provides the first DNA reference for grouper in Langsa district, Indonesia, with significant implications for future sustainable grouper management.

Tren Kejadian Dengue (Incidence Rate) dan Kematian Akibat Dengue (Case Fatality Rate) di Indonesia Meyrita Meyrita; Suwarno Suwarno; Nurdin Saidi; Nanda Muhammad Razi
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9500

Dengue Hemorrhagic Fever (DHF) is a disease that currently has significant morbidity and mortality rates. In Indonesia, the trend of DHF cases has increased and decreased every year. This study aims to analyze the development of dengue cases by considering two indicators, namely dengue incidence rate and dengue case fatality rate (CFR) during the period 2012-2022, to know the pattern of dengue disease in Indonesia, and evaluate the government's target in handling dengue cases based on IR and CFR rates. The data used is secondary data obtained from the 2021 Indonesian Health Profile and the 2022 Dengue Fever Annual Report. IR and CFR data were analyzed using Microsoft Excel which will be interpreted in the form of graphs to illustrate the trends and patterns of DHF cases in Indonesia, IR maps in 2021 and 2022 were analyzed using ArcGIS software. Based on the results of the analysis, the development of dengue cases during the period 2012-2022 experienced a misalignment between the increasing trend of IR and CFR. The IR value experienced significant fluctuations from 37.3 per 100,000 population in 2012 to 52.07 per 100,000 population in 2022, while the CFR value during the period 2012-2022 tended to decrease from 0.90% (2012) to 0.86% (2022). This pattern reflects the complex dynamics of DHF epidemiology, where an increase in cases is not always followed by an increase in fatalities. The IR and CFR achievements for 2022 have not met the government's expectations, with only 16% of districts/cities having IR values ≤ 10/100,000, while the CFR value reached 0.86%, slightly above the set target of 0.7%.

DNA Barcoding of Commercially Important Groupers (Epinephelidae) in Simeulue and Banyak Islands, Aceh, Indonesia Fadli, Nur; Razi, Nanda Muhammad; Damora, Adrian; Muchlisin, Zainal A.; Ramadhaniaty, Mutia; Rahayu, Sri Riska; Harnelly, Essy; Habib, Ahasan; Siti-Azizah, Mohd Nor
HAYATI Journal of Biosciences Vol. 32 No. 4 (2025): July 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.4.1080-1091

The groupers are a group of demersal fish that live in tropical and subtropical areas and are mostly linked to coral reefs. The fish are highly valued in international markets and are subjected to overfishing in the wild. Accurate fish resource identification knowledge is essential for sustainable fisheries management. This research is aimed to generate a reference COI sequence library of grouper species caught in Simeulue and Banyak Islands, Aceh. The study was conducted from April-September 2021 at sixteen fish landing sites in Simeulue and Banyak Islands. In total, this study generated 70 COI sequences representing 20 grouper species. Epinephelus (54%) was the most prevalent grouper genus at the study site, followed by Cephalopholis (19%), Plectropomus (13%), Variola (12%), Hyporthodus (1%), and Anyperodon (1%). According to the IUCN classification, 17 species (85%) fall into the category of Least Concern, two (10%) fall into the category of Vulnerable, and one (5%) falls into the category of Data Deficient. The average genetic distance based on the Kimura-2-Parameter (K2P) between specimens was 0.51% at the species level and 8.34% at the genus level. Overall, this study has provided the COI sequence database of grouper for the Simeulue and Banyak Islands.

Daya Dukung Tambak Udang Vaname (Litopenaeus vannamei) Berdasarkan Parameter Kualitas Air di Desa Purworejo, Kecamatan Pasir Sakti, Kabupaten Lampung Timur Alfionita, Wuni; Larasati, Ellen; Pradana, Hengki; Rahman, Agus Arif; Husna, Asmaul; Riandi, Muhammad; Razi, Nanda Muhammad
Jurnal Ilmiah Samudra Akuatika Vol 9 No 1 (2025): Jurnal Ilmiah Samudra Akuatika
Publisher : Fakultas Pertanian Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jisa.v9i1.11345

This study evaluates the carrying capacity of Litopenaeus vannamei ponds based on water quality parameters in Purworejo Village, East Lampung, Indonesia. Water samples were collected from five ponds over a 90-day culture period, measuring physicochemical parameters including temperature, pH, dissolved oxygen (DO), salinity, ammonia, nitrite, and hardness. Results showed temperature ranging from 28 to 31°C, pH 7.5 to 8.2, DO 6.8 mg/L, salinity 15–22 ppt, ammonia 0.02 to 0.07 mg/L, nitrite 0.05 to 0.12 mg/L, and hardness 1,200 to 2,300 mg/L. Most values were within the optimal ranges for vannamei shrimp culture according to FAO and national standards, although DO fluctuations and elevated nitrite levels may constrain stocking density. These findings indicate that the studied ponds remain suitable, with an estimated optimal carrying capacity of 80–100 shrimp/m². This study provides baseline data for water quality management and sustainable stocking strategies in vannamei shrimp aquaculture at Purworejo Village, Pasir Sakti Subdistrict, East Lampung District, East Lampung.

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