Food habits of the rough ray<i>Raja radula</i>(Chondrichthyes: Rajidae) from the Gulf of Gabès (central Mediterranean Sea)

Kadri, Hasna; Saïdi, Béchir; Marouani, Sondes; Bradai, M. N.; Bouaïn, Abderrahmen

doi:10.1080/11250003.2012.697925

Cited by 8 publications

(2 citation statements)

References 30 publications

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“…Maximum total length observed in our study for R. clavata (54.5 cm) were slightly smaller than found in a study carried out (73.2 cm) in the Southeastern Black Sea (Demirhan et al, 2005). Kadri et al (2013) reported that the TL of R. radula collected from the Gulf of Gabes (southern Tunisia, central Mediterranean Sea) ranged from 13.4 to 65 cm, similar to our report (51.5 to 56.5 cm). The average total length and weight of T. marmorata collected from North-Eastern Mediterranean were detected to be between 12.26 to 40 cm, 40.40 to 1062.00 g, respectively by Duman and Basusta (2013).…”

Section: Discussionsupporting

confidence: 91%

Determination of Usage Potential of Some Mediterranean Rays in Fish Oil Production

Ayas¹,

Eliuz

Peri³

et al. 2019

Marine Science and Technology Bulletin

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In this study, it was determined the chemical composition of the four ray species (Dasyatis pastinaca, Raja radula, Raja clavata and Torpedo marmorata) caught from Mersin Bay in the Northeastern Mediterranean Sea. For this purpose, lipid levels, fatty acid profiles, macro-trace elements, and heavy metal levels in the liver and muscle tissues of the Mediterranean rays were investigated. Lipid levels of liver tissue of D. pastinaca, R. radula, R. clavata, T. marmorata were determined to be 80.21%, 53.73%, 45.57% and 45.26%, respectively; while lipid levels for muscle tissue were 1.62%, 1.31%, 1.20% and 1.43%, respectively. In the fatty acid composition of muscle tissues of the rays; ∑SFAs (total saturated fatty acids) levels were reported to be between 30.46% and 35.00%, ∑MUFAs (total saturated fatty acids) levels were 21.49% to 27.77%, ∑PUFAs (total polyunsaturated fatty acids) levels were 28.76% to 35.69%; while for liver tissues; ∑SFAs levels were reported to be between 25.76% and 31.15%, ∑MUFAs levels were 23.43% to 30.66%, ∑PUFAs levels were 21.86% to 30.54%. According to data of this current study, no potential toxic metals (Cr, As, Cd, Pb, Hg) were detected in the fish oils obtained from the tissues. Finally, it was showed that these fish had potential for fish oil production because of their having fat in the liver tissues and there were also no potential heavy metal in the both muscle oil and liver oil, being rather healthy.

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Section: Discussionsupporting

confidence: 91%

Determination of Usage Potential of Some Mediterranean Rays in Fish Oil Production

Ayas¹,

Eliuz

Peri³

et al. 2019

Marine Science and Technology Bulletin

View full text Add to dashboard Cite

show abstract

“…Delpiani, Spath, & Figueroa, 2013; Lipej, Mavrič, Paliska, & Capapé, 2013; Orlov, 1998), which may be due to sexual dimorphism, spatiotemporal segregation and increased energetic requirements during gestation (Delpiani et al., 2013). Many rays showed seasonal and/or regional variation in diet, which has been hypothesized to be related to changes in prey availability, abundance and distribution (Barbini & Lucifora, 2011; Bornatowski, Robert, & Costa, 2010; Braccini & Perez, 2005; Kadri, Saïdi, Marouani, Bradai, & Bouaïn, 2013; Molina & Cazorla, 2015; Saglam, Ak, Kutlu, & Aydin, 2010; Saglam & Bascinar, 2008; San Martin, Braccini, Tamini, Chiaramonte, & Perez, 2007; Szczepanski & Bengtson, 2014), but could also be related to ray seasonal migrations influenced by environmental variables (Schlaff, Heupel, & Simpendorfer, 2014). Ontogenetic shifts in ray diets are widespread, where larger prey items were consumed with increasing body size (e.g.…”

Section: Predator–prey Interactionsmentioning

confidence: 99%