Abstract
Narrow-barred Spanish mackerel, Scomberomorus commerson, is an epipelagic and migratory species of family Scombridae which have a significant role in terms of ecology and fishery. 100 samples were collected from the Persian Gulf, Oman Sea and Arabian Sea. Part of their dorsal fins was snipped and transferred to micro-tubes containing ethanol; then, DNAs were extracted and HRM-Real Time PCR was performed to designate representative specimens for sequencing. Phylogenetic relationships of S. commerson from Persian Gulf, Oman Sea and Arabian Sea were investigated using sequence data of mitochondrial DNA D-loop region. None clustered Neighbor Joining tree indicated the proximity amid S. commerson in four sites. As numbers demonstrated in sequence analyses of mitochondrial DNA D-Loop region a sublimely high degree of genetic similarity among S. commerson from the Persian Gulf and Oman Sea were perceived, thereafter, having one stock structure of S. commerson in four regions were proved, and this approximation can be merely justified by their migration process along the coasts of Oman Sea and Persian Gulf. Therefore, the assessment of distribution patterns of 20 haplotypes in the constructed phylogenetic tree using mtDNA D-Loop sequences ascertained that no significant clustering according to the sampling sites was concluded.
Highlights
The tunas pertaining to the family Scombridae, contain an invaluable group of fishes
The Narrow-barred Spanish mackerel, Scomberomorus commerson (Lacepede 1800), is one of the most important commercial pelagic and migratory species (Al-Hosni and Siddeek 1999) which exploited in the Persian Gulf, Oman Sea
Peak of the fishing is among October and June and their migratory movement from Arabian Sea towards the Persian Gulf, in September and in the opposite direction, around April has been attached with this seasonality occurrence (FAO 1989)
Summary
The tunas pertaining to the family Scombridae, contain an invaluable group of fishes. This fish belongs to the family of Scombridae with 15 genera and 49 species (Collette and Nauen 1983) It is an epipelagic species, with the depth range between 10 and 70 m (Pauly et al 1996), distributed throughout the coastal tropical waters of the Indo-Pacific: Red Sea and South Africa to Southeast Asia, north to China and Japan and south to southeast Australia, and to Fiji (Kailola et al 1993). Southeast Atlantic, the Narrow-barred Spanish mackerel, customarily named Kingfish This highly valued pelagic fish, caught seasonally along the Iranian coastal waters of the Persian Gulf, Oman Sea and Arabian Sea. Seasonally, peak of the fishing is among October and June and their migratory movement from Arabian Sea towards the Persian Gulf, in September and in the opposite direction, around April has been attached with this seasonality occurrence (FAO 1989)
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