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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis BIOTROPIA - The Southeast Asian Journal of Tropical Biology
Lalu M Iqbal Sani
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Immunology & microbiology Library & Information Science Veterinary

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POLA KEANEKARAGAMAN DAN DISTRIBUSI SPESIES IKAN TERUMBU MENGGUNAKAN ENVIRONMENTAL DNA (eDNA) METABARCODING PADA JARAK LONGITUDINAL DARI TELUK JAKARTA Lalu M Iqbal Sani; Azhari Benyamin; Alief K Husna; Dondy Arafat; Beginer Subhan; Adriani Sunuddin; Nadya Cakasana; Dea Fauzia Lestari; Dr. Hawis Madduppa
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 13 No. 3 (2021): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v13i3.37971

Abstract

The existence of reef fish is certainly closely related to the existence of reefs coral because the ecosystem is a habitat for reef fish. Coral reefs are ecosystems that are commonly found on small islands in the tropics including the Seribu Islands. The Seribu Islands are a group of 110 islands located off the coast of Jakarta and up to 80 kilometers north of the Java Sea. In this study, we examined the species distribution and diversity of reef fish species on two different distance location in Jakarta Bay using environmental DNA (eDNA) metabarcoding analysis from two sites which are Untung Jawa Island and Harapan Island. The 4L eDNA seawater samples were collected at a depth of 8-9 meters at each site and then analysis using specific primer (MiFish U) of 12S rRNA. Overall, the higher species richness was found on Harapan Island (52 species) followed by Untung Jawa Island (11 species). The Shannon-Wiener Index also showed Harapan Island has higher reef fish diversity based on three taxonomic level (family, genus, and species). There were only five mutual reef fish species found in the two locations, namely Atherinomorus aetholepis, Auxis thazard, Cephalopholis sexmaculata, Epinephelus chlorostigma, and Plectropomus areolatus. The results of these findings in this current study are in line with anthropogenic pressure different where Untung Jawa Island is the closer one to Jakarta Bay than the Harapan Island that located relatively far from Jakarta Bay.
DETECTING GROUPER (EPINEPHELINAE) DIET COMPOSITION AND PREY AVAILABILITY IN RAJA AMPAT CORAL REEFS THROUGH DNA AND eDNA METABARCODING: DETECTING GROUPER (EPINEPHELINAE) DIET THROUGH DNA AND eDNA METABARCODING Hawis Madduppa; Dietriech Geoffrey Bengen; Inna Puspa Ayu; Beginer Subhan; Lalu M Iqbal Sani; Budi Prabowo
BIOTROPIA - The Southeast Asian Journal of Tropical Biology Vol. 30 No. 1 (2023): BIOTROPIA Vol. 30 No. 1 April 2023
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2023.30.1.1608

Abstract

Gaining extensive knowledge of prey sources is an essential approach for understanding trophic structure and relationships, especially in highly diverse coral reef ecosystems. Groupers are a major Asian reef fish commodity, making it important to study grouper prey and the trophic relations involved. The wide distribution of groupers across different environments could lead to distinctive predatory behaviour. Therefore, this study was conducted to investigate and compare the taxonomic classification and composition of prey in the diets of two common groupers (Epinephelus areolatus and E. malabaricus) based on DNA metabarcoding of stomach contents and potential prey detection using environmental DNA tools at sites in the coral reefs of Raja Ampat, Indonesia. DNA recovered from the water column comprised taxa from the Arthropoda, Chordata, Cnidaria and Mollusca, several of which were also found in grouper guts, with Cnidaria the most abundant class. Diversity was high for potential prey species in the environment and prey consumed by each grouper species. The high overlap in prey identified from gut contents indicates these two epinephelids have a similar feeding strategy. However, nMDS ordination showed segregation between the prey consumed by each species and potential prey available in the environment. The results indicate a low likelihood of competition between the two grouper species, related to the abundance and wide choice of potential prey in the highly biodiverse Raja Ampat coral reef ecosystem.
Co-Authors Adriani Sunuddin Alief K Husna Ayu, Inna Puspa Azhari Benyamin Beginer Subhan Budi Prabowo Dea Fauzia Lestari, Dea Fauzia Dietriech Geoffrey Bengen Dondy Arafat Hawis H Madduppa Nadya Cakasana