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KOMPOSISI ALEL SPESIFIK IKAN NILA (Oreochromis niloticus.) DI DANAU TOBA BERDASARKAN SNP MARKER

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There are three common commercial tilapia species Oreochomis niloticus, O. mossambicus, and O. aureus. These species have the opportunity for hybridization. Hybridization between tilapia species is widespread, one of which is red tilapia, is a crossbreed of four different species of the genus Oreochromis, namely O. mossambicus, O. niloticus, O. hornorum, and O. aureus. The purposes of this study were determine the morphological, morphometric, and meristic characteristics of farm Nile tilapia and wild Nile tilapia in Toba Lake, to analyze of species or strain composition of nile tilapia using KASP assay PCR, and to determine the physical and chemical characteristics of Nile tilapia habitat. This research was conducted in November 2024- February 2025. Fish and water samples were taken from Toba Lake. The SNP marker stages included DNA extraction, electrophoresis, and SNP marker diagnostics. The analysis results showed the species composition of farm and wild samples, indicated a difference in diagnostic homozygotes. Individuals from the farm population were consisted mainly of O. niloticus species with a diagnostic allele frequency of 0.64, with contributions from non-O. niloticus with an alternative allele frequency of 0.36. Meanwhile the wild population in Toba Lake showed that five individuals were heterozygous with a diagnostic allele frequency value of 0.5 and an alternative allele frequency of 0.5. The water quality parameters of the two locations included temperature of 25-26°C. pH 7.5-8.5. Dissoleved Oxygen 5.01-9.50 mg L-1. TDS 0.45-0.57 mg L-1. alkalinity 50-60 mg L-1. ammonia 0.45-0.57 mg L-1. transparency 0.89-1.9 m.

Availability
Inventory Code Barcode Call Number Location Status
2507005546T183543T1835432025Central Library (Reference)Available but not for loan - Not for Loan
Detail Information
Series Title
-
Call Number
T1835432025
Publisher
Indralaya : Prodi Budidaya Perairan, Fakultas Pertanian Universitas Sriwijaya.,
Collation
xiii, 41 hlm.; ilus,; tab, 29 cm
Language
Indonesia
ISBN/ISSN
-
Classification
576.507
Content Type
Text
Media Type
unmediated
Carrier Type
other (computer)
Edition
-
Subject(s)
Prodi Budidaya Perairan
genetika populasi ikan nila
Specific Detail Info
-
Statement of Responsibility
Other version/related
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