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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Bioscientist : Jurnal Ilmiah Biologi
Stilaf Terbit Galih Walsandy
Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Immunology & microbiology Materials Science & Nanotechnology Physics Social Sciences

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Morphometric Characteristics of Freshwater Shrimp in Lotic and Lentic Habitats of Ogan Ilir Regency, South Sumatra Stilaf Terbit Galih Walsandy; Arum Setiawan; Kodri Madang
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 2 (2026): June
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.v14i2.20603

Abstract

This study aimed to analyze the length–weight relationship and morphometric variation of three freshwater shrimp species from lotic and lentic habitats in Ogan Ilir Regency, South Sumatra, Indonesia. The study was conducted from November 2025 to May 2026 using purposive sampling at six aquatic stations, comprising three lotic and three lentic habitats. A total of 300 shrimp specimens were collected using baited traps (bubu) and hand nets. The observed parameters included total length and body weight. Length–weight relationships were analyzed using the allometric equation W = aLᵇ, whereas morphometric variation was evaluated using Principal Component Analysis (PCA). The results showed that Palaemon carcinus exhibited positive allometric growth in both lotic (b = 5.805) and lentic habitats (b = 6.963). Similarly, Macrobrachium rosenbergii showed positive allometric growth in lotic (b = 8.230) and lentic habitats (b = 3.973). In contrast, Macrobrachium nipponense demonstrated positive allometric growth in lotic habitats (b = 4.960) but negative allometric growth in lentic habitats (b = 0.899). PCA revealed that most morphometric variation was explained by the first principal component (PC1), indicating a strong association between total length and body weight. These findings suggest that habitat type, particularly differences between lotic and lentic aquatic systems, influences growth patterns and morphometric variation in freshwater shrimps in South Sumatra.
Deskripsi Keanekaragaman Udang Air Tawar di Perairan Lentik dan Lotik Kabupaten Ogan Ilir, Sumatera Selatan Stilaf Terbit Galih Walsandy; Arum Setiawan; Kodri Madang
Jurnal Penelitian Pendidikan IPA Vol 12 No 6 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i6.15160

Abstract

Freshwater shrimps are important components of inland aquatic ecosystems and contribute to biodiversity, nutrient cycling, and ecosystem stability. Despite their ecological importance, information regarding freshwater shrimp diversity in lentic and lotic ecosystems of Ogan Ilir Regency, South Sumatra, remains limited. This study aimed to identify freshwater shrimp species and describe their diagnostic morphological characteristics in contrasting freshwater habitats. Field sampling was conducted from November 2025 to January 2026 at six sampling stations representing three lentic and three lotic ecosystems. Specimens were collected using baited traps (bubu) and identified using standard taxonomic keys based on external morphological characteristics, including body shape, rostrum, cephalothorax, abdomen, telson, antennae, pereopods, pleopods, and body coloration. Three freshwater shrimp species belonging to the family Palaemonidae were identified, namely Macrobrachium lanchesteri, Macrobrachium rosenbergii, and Macrobrachium nipponense. Each species exhibited distinctive morphological characteristics that enabled reliable identification. Differences in species occurrence between lentic and lotic ecosystems indicate habitat-related variation in freshwater shrimp assemblages. This study provides baseline information on freshwater shrimp diversity in Ogan Ilir Regency and contributes to biodiversity inventories, taxonomic studies, and freshwater ecosystem conservation in South Sumatra.
Co-Authors Arum Setiawan Kodri Madang