Purnamasari L.1,2, Perwitasari-Farajallah D.4, Wowor D.3, Annawaty5, Sukmono T.6, Farajallah A.4* 2025. A comparison of the genetic diversity and population structure of four populations of Macrobrachium sundaicum (Heller, 1862) (Decapoda: Palaemonidae) in peat swamps on Sumatra, based on the sequence COI mt DNA gene marker // Arthropoda Selecta. Vol.34. No.3: 365–376 [in English].
1 Animal Bioscience Study Program, Department of Biology, Faculty of Mathematics and Natural Sciences, Jl. Agatis Kampus IPB Dramaga, Bogor 16680, West Java, Indonesia.
2 Tim Ekspedisi Riset Akuatika (ERA), Jl. Kaluku Poa, Palu, Central Sulawesi, 94119, Indonesia.
3 Museum Zoologicum Bogoriense, Research Centre for Biosystematics and Evolution, National Research and Innovation Agency (BRIN), Jl. Raya Jakarta-Bogor km 46, Cibinong, 16912, West Java, Indonesia.
4 Department of Biology, Faculty of Mathematics and Natural Sciences, Jl. Agatis Kampus IPB Dramaga, Bogor 16680, West Java, Indonesia.
5 Department of Biology, Faculty of Sciences, Tadulako University, Jl. Raya Soekarno-Hatta Kampus Bumi Tadulako Tondo, Palu, 94119, Sulawesi Tengah, Indonesia.
6 Department of Biology, Faculty Sains and Technology, Jambi University, Jl. Jambi – Muara Bulian No.KM. 15, Mendalo Darat, Kec. Jambi Luar Kota, Kabupaten Muaro Jambi, Jambi, Indonesia.
*Corresponding author
Lora Purnamasari: purnamasarilora@apps.ipb.ac.id
Dyah Perwitasari-Farajallah: witafar@apps.ipb.ac.id ORCID https://orcid.org/0000-0001-6206-1675
Daisy Wowor: daisy_wowor@yahoo.com ORCID https://orcid.org/0000-0002-4837-666X
Annawaty: annawaty09@gmail.com ORCID https://orcid.org/0000-0003-0112-7313
Tedjo Sukmono: tedjo_sukmono@unja.ac.id
Achmad Farajallah: achamad@apss.ipb.ac.id ORCID https://orcid.org/0000-0002-7733-6528
doi: 10.15298/arthsel.34.3.08
ABSTRACT. A freshwater prawn Macrobrachium sundaicum (Heller, 1862) (Decapoda: Palaemonidae) is a landlocked species that can be found in peat swamps throughout the island of Sumatra, Indonesia. These peat swamp rivers are characterized by a very acidic pH value (3.3–5.0), and the water color ranges from reddish brown to dark. However, there have been no molecular studies conducted on the genetic diversity of this species in acidic environments. This study is the first attempt to explore the genetic diversity of M. sundaicum living in peat swamps on Riau and Jambi Province of Sumatra Island by examining the partial COI gene of the mitochondrial genome. Our study revealed that the haplotype and nucleotide diversities were low in all the river basin studied. Network analysis showed that each river had a unique haplotype, suggesting a strong population structure. This is likely due to the dispersion of ancestors during the colonization (differences in ancient river basins), habitat fragmentation, and the landlocked life cycle of this species in peat swamps, which act as geographical barriers shaping the current distribution of this species.
KEY WORDS: acidic water, COI, Palaemonidae, freshwater prawn, population shrimp.
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