Morphometric Analyses of the Angular Roughshark, Oxynotus centrina (Oxynotidae), with Biological Notes on Specimens from the Sea of Marmara
- Autores: Kabasakal H.1, Uzer U.2, Gönülal O.3, Akyüz O.3, Karakulak F.2
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Afiliações:
- Istanbul University, Institute of Science, Fisheries Technologies and Management Program, İstanbul, Turkey
- İstanbul University, Faculty of Aquatic Sciences, Department of Fisheries Technologies and Management, İstanbul, Turkey
- Istanbul University, Faculty of Aquatic Sciences, Department of Marine Biology, Vezneciler, İstanbul, Turkey
- Edição: Volume 63, Nº 6 (2023)
- Páginas: 625-625
- Seção: Articles
- URL: https://journals.rcsi.science/0042-8752/article/view/232366
- DOI: https://doi.org/10.31857/S0042875223060127
- EDN: https://elibrary.ru/AQILOB
- ID: 232366
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Resumo
Morphometric measurements as percentages of total length of 6 specimens of Oxynotus centrina (Linnaeus, 1758), captured in the Sea of Marmara were reported. All of the analyzed proportions of landmark measurements as percentage of total length show allometry. Although, slight differences were seen between the morphometrics of Marmara specimens of O. centrina and those reported for the angular roughsharks captured in several geographical subregions of the Mediterranean Sea, these variations can be considered admissible based on allopatry. Regarding the mouth morphology in particular, the proportion of head length/mouth width to total length showed negative allometry, indicating O. centrina is a small-mouthed shark compared to increasing body size. A partly digested shark embryon and vitellus like slurry were found in the stomach content of one specimen captured in the Sea of Marmara, which provided supporting evidence for the predation on elasmobranch eggs by O. centrina in the wild.
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Sobre autores
H. Kabasakal
Istanbul University, Institute of Science, Fisheries Technologies and Management Program, İstanbul, Turkey
Email: j.ichthyology@gmail.com
Турция, Стамбул
U. Uzer
İstanbul University, Faculty of Aquatic Sciences, Department of Fisheries Technologies and Management, İstanbul, Turkey
Email: j.ichthyology@gmail.com
Турция, Стамбул
O. Gönülal
Istanbul University, Faculty of Aquatic Sciences, Department of Marine Biology, Vezneciler, İstanbul, Turkey
Email: j.ichthyology@gmail.com
Турция, Стамбул
O. Akyüz
Istanbul University, Faculty of Aquatic Sciences, Department of Marine Biology, Vezneciler, İstanbul, Turkey
Email: j.ichthyology@gmail.com
Турция, Стамбул
F. Karakulak
İstanbul University, Faculty of Aquatic Sciences, Department of Fisheries Technologies and Management, İstanbul, Turkey
Autor responsável pela correspondência
Email: j.ichthyology@gmail.com
Турция, Стамбул