Stock Discrimination in the Horse Mackerel Trachurus trachurus (Teleostei: Carangidae) off the Moroccan Atlantic Coastal Waters using a Morphometric-Meristic Analysis

Mghazli, Hayat El; Znari, Mohammed; Mounir, Abdelaziz

doi:10.1007/s41208-021-00372-7

Cited by 5 publications

(2 citation statements)

References 42 publications

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“…These differences between population differences can be ascribed to each population's distinct geographical locations and environmental constraints (Siddik et al 2016). According to the cluster analysis, our findings are comparable to the results obtained by Siddik et al (2016) andEl Mghazli et al (2021), who found that the populations of Gangetic whiting (Sillaginopsis panijus) from the Bangladesh and Atlantic horse mackerel (Trachurus trachurus) from the Moroccan Atlantic coast were each clustered into two groups. Fish exhibit notable morphological diversity within and across populations, making them particularly sensitive to environmental adaptation, eventually influencing their phenotypes (Verma et al 2014).…”

Section: Principal Component Analysis (Pca)supporting

confidence: 87%

Morphometric variations of Kawakawa (Euthynnus affinis Cantor, 1849) in Malaysian and Yemeni waters

BINASHIKHBUBKR,

SETYAWAN,

NAIM

2023

Nusantara Biosci

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Abstract. Binashikhbubkr K, Setyawan AD, Naim DM. 2023. Morphometric variations of Kawakawa (Euthynnus affinis Cantor, 1849) in Malaysian and Yemeni waters. Nusantara Bioscience 15: 269-278. Euthynnus affinis Cantor, 1849 (Kawakawa), a small epipelagic tuna that migrates, is one of the most commercially significant tunas in Indo-Pacific subtropical and tropical waters. Unfortunately, there is a lack of knowledge on the region's stock structure and management of the particular migratory species. The present investigation aimed to distinguish body shape differences among 20 populations of E. affinis across Malaysian and Yemen coastal waters. A total of 416 specimens of E. affinis were sampled from five central geographic regions: the South China Sea, Straits of Malacca, Sulu Sea, Celebes Sea, and the Arabian Sea. Multivariate analyses, such as Principal Component Analysis (PCA), Discriminant Function Analysis (DFA), and Cluster Analysis (CA) of 12 morphometric variables, were conducted to differentiate 20 populations of E. affinis. The findings revealed significant differences in the body form among 20 populations. Morphological homogeneity was observed among populations from Peninsular Malaysia and Malaysian Borneo (Sabah and Sarawak). As expected, Yemen's (Mukalla City) populations were clearly segregated and formed a separate cluster. The highest percentage of correctly classified specimens (100%) came from populations in Pulau Tenggol (Terengganu) and Kukup (Johor). In contrast, the highest percentage of misclassified specimens (100%) came from populations in Kota Kinabalu (Sabah), Bintawa (Sarawak), Lumut (Perak), and Endau (Johor). Based on the Mahalanobis distances, hierarchical cluster analyses revealed that 20 populations of E. affinis could be clustered into three distinct groups. This is the first report on E. affinis from Peninsular Malaysia, Malaysian Borneo (Sabah and Sarawak), and the waters of Yemen using morphometric techniques.

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Section: Principal Component Analysis (Pca)supporting

confidence: 87%

Morphometric variations of Kawakawa (Euthynnus affinis Cantor, 1849) in Malaysian and Yemeni waters

BINASHIKHBUBKR,

SETYAWAN,

NAIM

2023

Nusantara Biosci

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“…Atlantic horse mackerel (Trachurus trachurus), also known as European horse mackerel or common scad, is a pelagic fish species found in the eastern Atlantic Ocean of Europa and Africa and in the South-Eastern Indian Ocean [14,15]. Previous research regarding quality changes in this species during processing has been focused on fresh and frozen products [16,17].…”

Section: Introductionmentioning

confidence: 99%

Influence of Different Previous Frozen Holding Periods on the Canned Fish Quality

Villamarín,

Martínez,

Trigo

et al. 2023

Foods

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The combined effects of thermal processing (i.e., sterilisation treatment) and the prior frozen storage time (3 or 6 months at −18 °C) on the quality loss in canned Atlantic horse mackerel (Trachurus trachurus) were determined. Thus, the sterilisation step led to a remarkable (p < 0.05) formation in the canned fish muscle of fluorescent compounds, free fatty acids (FFAs), and trimethylamine and an increase in the L* and b* colour parameters; meanwhile, a decrease (p < 0.05) in the total ω3 FA/total ω6 FA ratio and the a* colour value were detected. The prior frozen storage period led to an increased (p < 0.05) lipid oxidation (peroxide, thiobarbituric acid reactive substance, and fluorescent compound formation) and hydrolysis (FFA formation) development and to increased L* and b* colour values in the corresponding canned samples; additionally, a lower (p < 0.05) polyene index and phospholipid content were observed in canned fish previously subjected to frozen storage. In most indices, physico-chemical changes related to quality loss were found to be higher if the previous storage period was increased. According to the marked effects of the sterilisation step and the prior frozen storage period, the optimisation of such processing conditions is recommended to maximise the quality of canned horse mackerel.

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Stock structure delineation of Kawakawa Euthynnus affinis (Cantor, 1849) from Malaysian Borneo using multivariate morphometric analysis

Binashikhbubkr,

Babangida Kachi,

Al-Misned

et al. 2024

Journal of King Saud University - Science

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Stock Discrimination in the Horse Mackerel Trachurus trachurus (Teleostei: Carangidae) off the Moroccan Atlantic Coastal Waters using a Morphometric-Meristic Analysis

Cited by 5 publications

References 42 publications

Morphometric variations of Kawakawa (Euthynnus affinis Cantor, 1849) in Malaysian and Yemeni waters

Morphometric variations of Kawakawa (Euthynnus affinis Cantor, 1849) in Malaysian and Yemeni waters

Influence of Different Previous Frozen Holding Periods on the Canned Fish Quality

Stock structure delineation of Kawakawa Euthynnus affinis (Cantor, 1849) from Malaysian Borneo using multivariate morphometric analysis

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