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Genetic Characterization and Morphometric Variation of Siganus Canaliculatus Populations in the Waters of the Makassar Strait and Bone Bay as the Basis of Domestication Strategy Sahabuddin, Sahabuddin; Indah Yani, Fitri; Jufri, Ady
Journal of Multidisciplinary Sustainability Asean Vol. 3 No. 1 (2026)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/ijmsa.v3i1.3446

Abstract

Siganus canaliculatus represents a commercially important herbivorous reef fish with promising potential for aquaculture development in eastern Indonesia. Sustainable domestication requires comprehensive understanding of population genetic structure and morphological variability to ensure adaptive capacity and broodstock quality. This study aimed to characterize the genetic diversity and morphometric variation of S. canaliculatus populations in the Makassar Strait and Bone Bay as a scientific basis for domestication strategies. A comparative cross-sectional design was applied using mitochondrial DNA (COI) analysis and geometric morphometric techniques. A total of 102 specimens were sampled from both regions. Genetic diversity indices, fixation index (F_ST), analysis of molecular variance (AMOVA), principal component analysis (PCA), and discriminant function analysis (DFA) were performed. Results revealed moderate genetic diversity in both populations with significant genetic differentiation (F_ST = 0.118; p < 0.01). Morphometric analyses demonstrated clear shape divergence, particularly in body depth and head proportion, with 78.4% classification accuracy between populations. Concordance between genetic and phenotypic structuring indicates partial connectivity combined with local adaptation. These findings provide an integrative baseline for region-based broodstock selection and support sustainable domestication programs while maintaining genetic diversity and adaptive potential.
Assessment of Lift Net Catch Productivity in Tonyaman Village, Polewali Mandar, West Sulawesi Etika Ariyanti Hidayat; Eka Erliana; Ady Jufri; Muhammad Nur Ihsan; Zulfathri Randhi
Jurnal Perikanan Terpadu Vol 7, No 1 (2026): Jurnal Perikanan Terpadu Volume 7 Nomor 1
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jpterpadu.v7i1.11998

Abstract

Lift net productivity is a key indicator of fishing gear and operational efficiency in Tonyaman. This study aimed to analyze the productivity and species composition of fish catches from two lift net units using experimental fishing, with each unit conducting 15 trips. Data included catch volume per trip and species identification. Results showed fluctuating productivity: Lift net 1 initially declined (1–2 kg/trip) but increased to 6–7 kg/trip, while Lift net 2 showed a significant rise from day 9, reaching up to 15 kg/trip. Species composition varied, with 12 species in net 1 and 10 in net 2. Average productivity was 5.097 kg/trip for net 1 and 6.616 kg/trip for net 2. Catch composition revealed a higher proportion of target species in net 2. To enhance efficiency and yield, it is recommended that fishers adopt fishing technologies and consider seasonal patterns in their operations