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All Journal HAYATI Journal of Biosciences Biospecies Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Jurnal Ilmiah Mahasiswa Kelautan Perikanan Unsyiah DERIVATIF BERITA BIOLOGI Biosaintifika: Journal of Biology & Biology Education Jurnal Laot Ilmu Kelautan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Aceh Journal of Animal Science Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Nur Fadli
Department Of Aquaculture, Faculty Of Marine And Fisheries, Syiah Kuala University Banda Aceh, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Physics Veterinary

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Exploring the Genetic Landscape of Octopus cyanea: Connectivity and Population Structure in Northern Waters of Sumatra Ramadhaniaty, Mutia; Damora, Adrian; Moula, Intania; Fadli, Nur; Razi, Nanda Muhammad; Muchlisin, Zainal A
HAYATI Journal of Biosciences Vol. 33 No. 2 (2026): March 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.2.529-539

Abstract

Octopus cyanea is an ecologically and economically important cephalopod with wide larval dispersal influenced by ocean currents. However, geographic isolation among island clusters in northern Sumatra may restrict gene flow and shape population structure. This study investigated the genetic diversity and connectivity of O. cyanea from five populations (Aceh Island, Weh Island, Banyak Island, Simeulue Island, and Nias Island) using mitochondrial cytochrome c oxidase subunit I (COI) sequences. A total of 21 individuals were successfully amplified, yielding 651 bp fragments. Sequence analysis revealed 11 haplotypes across populations, with haplotype diversity (Hd) ranging from 0.285 in Banyak Island to 0.800 in Aceh Island, and nucleotide diversity (π) between 0.001 and 0.009. Pairwise genetic distances varied from 0.000 to 0.004, with the highest divergence observed between Simeulue Island and Nias Island (0.004), while Aceh Island and Weh Island showed no differentiation. AMOVA indicated that most genetic variation occurred within populations (68.74%), with an overall Fst of 0.315, suggesting low to moderate genetic structuring. The haplotype network demonstrated shared haplotypes among four populations, whereas Simeulue Island harbored unique haplotypes, indicating partial genetic isolation. These results highlight substantial genetic connectivity among O. cyanea populations in northern Sumatra, facilitated by larval dispersal via ocean currents, but also emphasize localized divergence in Simeulue Island. The findings provide critical baseline data for developing ecosystem-based fisheries management, supporting shared stock strategies while accounting for population-specific conservation needs.
New Distribution Record and Genetic Relationship of Bottlenose Wedgefish (Rhynchobatus australiae) Found in the Waters of Meulaboh, West Aceh Bahri, Samsul; Arjayanda, Elsa; Fadli, Nur; Ramadhaniaty, Mutia; Razi, Nanda M.; Erima, Derila; Hasibuan, Muhammad B.A.F.
Aceh Journal of Animal Science Vol 10, No 3 (2025): December 2025
Publisher : Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/ajas.10.3.46165

Abstract

Bottlenose Wedgefishes are fish that belong to the subclass Elasmobranchii, which are cartilaginous fish. West Aceh waters are one of the areas directly connected to the Indian Ocean. Bottlenose Wedgefish can be found in the Indian Ocean. Some information on Bottlenose Wedgefish DNA has now developed molecular approaches, which provide a fast and precise alternative to identify species. This research activity aims to report the presence of Bottlenose Wedgefish sharks (Rhynchobatus australiae) and analyze the relationship between Bottlenose Wedgefish sharks found in West Aceh with other regions. This research was conducted from October to December 2021. The specimens were taken from the Ujong Baroh Fish Landing Site (PPI), West Aceh, and analyzed at the Laboratory of Genetics and Aquatic Biodiversity, Faculty of Marine and Fisheries, Syiah Kuala University. The results of the study resulted in several conclusions, namely the Query Cover value of Meulaboh 1 and Meulaboh 2 samples of 93%. The Ident value of 99.70%-99.85% indicates that the same species is R. australiae. Thymine (T) nucleotide composition is 30.8%, Cytosine (C) is 24.9%, Adenine (A) is 27.4%, and Guanine (G) is 16.9%. Based on the results of phylogenetic tree reconstruction, the relationship between Rhynchobatus australiae Meulaboh samples 1 and 2 has a close kinship with Rhynchobatus australiae from India1, India2, India3, Malaysia1, Indonesia3, and Indonesia5. This research confirms the presence of Rhynchobatus australiae in West Aceh and establishes a close genetic link to regional populations.
Morphometric variation of five dominant parrotfish (Scaridae) harvested from the Northern Waters of Aceh Khaira, Nanda Ulfa; Muchlisin, ZA; Fadli, Nur
Depik Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.41572

Abstract

The waters of Aceh are surrounded by three major water bodies: the Andaman Sea, the Indian Ocean, and the Malacca Strait. Differences in current patterns extend the distribution range and contribute to the species diversity. Fish from the Scaridae family are among the species that thrive in these environments. The family Scaridae (Rafinesque 1810), commonly known as parrotfish, inhabits tropical seas, including the Pacific, Indian, and Atlantic Oceans, and is often found in coral reef areas. Parrotfish play a crucial role in maintaining coral reef health as one of the herbivorous fish species. This study aims to analyze the morphometric variation of five parrotfish species harvested from the Northern waters of Aceh. Traditional morphometrics using 12 measurement characters were applied to 60 fish samples from five species of the Scaridae family (Chlorurus capistratoides, Chlorurus sordidus, Scarus ghobban, Scarus niger, and Scarus rubroviolaceus). The results showed that Scarus rubroviolaceus shares four similar characters with Scarus ghobban: ED, HL, CPL, and PFL; it also shares four characters with Scarus niger: ED, HL, CPL, and SNL. Chlorurus capistratoides shares three similar characteristics with Scarus niger: CPL, ED, and PFL. In addition, the results of the DFA analysis revealed that Scarus ghobban and Scarus niger exhibit the highest degree of similarity in morphometric traits, particularly in HL, SNL, DFBL, ED, and PFL. Furthermore, Scarus rubroviolaceus demonstrates a slight overlap with Chlorurus capistratoides, while Scarus niger shows a minor overlap with Scarus rubroviolaceus. This study provides morphological diversity of parrotfish species in the northern Aceh waters.Keywords:Aceh watersmorphometricsParrotfishMeasurement charactersDFA
Co-Authors Abdullah A. Muhammadar Abdullah A. Muhammadar Adrian Damora Agus Halim, Agus Aidia N Aldila, Dhea Febby Arifsyah M. Nasution Arifsyah M. Nasution Arjayanda, Elsa Cut Yulvizar Cut Yulvizar Darmawi Musni Edi Rudi Edi Rudi Edi Rudi Erima, Derila Essy Harnelly Fachrurozi Amir Fardin Afrido Fardin Afrido, Fardin Firman M. Nur Firman M. Nur Fitriana, Mustika Marzah Habib, Ahasan Hasibuan, Muhammad B.A.F. Ichsan Setiawan Indra Indra Indra Indra Irma Dewiyanti Iwan Hasri Jamhari Jamhari KARTINI ERIANI Khaira, Nanda Ulfa Kocabas, Filiz Kutluyer Maria Ulfah Maria Ulfah Marzuki M Marzuki Marzuki Mohd Nor Siti-Azizah Moula, Intania Muchlisin, ZA Muchlisin, Zainal A Muhammad M Muhammadar, Abdullah Abbas Mursito, Bambang Mustika Marzah Fitriana Mutia Ramadhaniaty Mutia Ramadhaniaty Mutia Ramadhaniaty Nanda Muhammad Razi Nurul Fadhilah Purwoko, Agus Qurrata Akyun, Qurrata Rahayu, Sri Riska Ramadhaniaty, Mutia Razi, Nanda M. Rika Astuti Rika Astuti Rika Astuti Rika Astuti Rika Astuti Rochmi Widayanti Samsul Bahri Sarah, Putri Inten Satria Rizka, Satria Setiawan, Diky Agung Siti Maulida Siti-Azizah, Mohd Nor Sri Jumiati, Sri Sumarni Laila Buang Manalu Tanzil Murda Tanzil Murda, Tanzil Taufiq Ismail Zainal A. Muchlisin Zainal A. Muchlisin Zainal A. Muchlisin Zainal A. Muchlisin Zainal A. Muchlisin ZAINAL ABIDIN MUCHLISIN Zainal Abidin Muchlisin Zainal Abidin Muchlisin Zulkarnain Jalil Zulkarnain Jalil