Is There a Third Species of the Genus Squalus (Squalidae) Present in the Marmara Sea, or Just an Extreme Case of Intraspecific Variability of Squalus blainville?
Journal of Ichthyology, cilt.64, sa.5, ss.727-736, 2024 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 64 Sayı: 5
- Basım Tarihi: 2024
- Doi Numarası: 10.1134/s0032945224700462
- Dergi Adı: Journal of Ichthyology
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Veterinary Science Database
- Sayfa Sayıları: ss.727-736
- Anahtar Kelimeler: GSA28, Squalidae, Squalus, taxonomy, variability
- İstanbul Üniversitesi Adresli: Evet
Özet
Abstract: On 21 February 2024, 12 neonate spurdogs (Squaliformes: Squalidae) were captured with a bottom trawl towed over a sandy-muddy bottom at depths of 121–126 m in the eastern sector of the Marmara Sea. Eleven out of 12 spurdogs were identified as Squalus blainville (Risso, 1827), but one of the spurdogs, specimen MD6-24-SquaSp, exhibited several characteristics of both S. blainville and S. megalops. The results of this study suggest two possibilities: (1) either S. blainville shows a significant degree of intraspecific variability, and therefore, there is a highly differentiated variety of S. blainville that may occur in the Marmara Sea, or (2) there is a yet undescribed species belonging to the S. megalops clade that occurs in the region. This uncertainty supports the need for a genetically based taxonomic revision of the species of the genus Squalus in the Marmara Sea.