<i>Turcinoemacheilus ekmekciae</i>, a new dwarf loach from upper Tigris and Euphrates (Teleostei: Nemacheilidae)

KAYA C., YOĞURTÇUOĞLU B., AKSU İ., BAYÇELEBİ E., TURAN D.

JOURNAL OF FISH BIOLOGY, cilt.104, sa.1, ss.227-239, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 104 Sayı: 1
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1111/jfb.15578
  • Dergi Adı: JOURNAL OF FISH BIOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Animal Behavior Abstracts, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Veterinary Science Database
  • Sayfa Sayıları: ss.227-239
  • Anahtar Kelimeler: cytochrome c oxidase I, freshwater fish, taxonomy, Western Asia
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

Turcinoemacheilus ekmekciae, new species, from upper Euphrates and Tigris drainages is distinguished from other species of Turcinoemacheilus in Western Asia by having a dark stripe broader than the eye diameter along the lateral line, rarely possessing roundish blotches, 5–6 mandibular pores in mandibular canal, a comperatvely smaller head, a deeper body, and a greater pre-pelvic distance. Our specimens collected from the upper Great Zab, near the type locality of Turcinoemacheilus kosswigi, showed notable genetic divergence (a minimum K2P of 3.3%) from sequences reported as T. kosswigi in previous studies. Despite morphological similarities, this molecular difference suggests that the populations analysed in previous studies may represent a potential new species of Turcinoemacheilus, which we tentatively named as Turcinoemacheius cf. kosswigi. Molecular data also suggest that T. ekmekciae is characterized by a minimum K2P distance of 3.5% from Turcinoemacheilus minimus and T. cf. kosswigi. The three methods for species delimitation (assemble species by automatic partitioning [ASAP], Poisson tree processes [PTP], and multi-rate PTP [mPTP]) that were utilized for testing species assignments consistently identified our test group as a distinct species.