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Journals / Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries / 2026 / Cilt: 9 Sayı: 1

First Mediterranean Record of the Tintinnid, Leprotintinnus simplex (Schmidt, 1902) from İzmir Bay (Aegean Sea, Türkiye)

İzmir Körfezi’nden (Ege Denizi, Türkiye) Tintinnid, Leprotintinnus simplex (Schmidt, 1902)’in Akdeniz'deki İlk Kaydı

Levent Yurga(EGE ÜNİVERSİTESİ)0000-0003-4033-7567
Pages
26–38
Publication Date
2026-07-07
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

This study documents the first Mediterranean occurrence of L. simplex and provides a concise biogeographical overview of its global distribution.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Leprotintinnus simplex Schmidt, 1902 was recorded for the first time in İzmir Bay during plankton monitoring conducted in September 2025.
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Key Findings & Data:Morphometric analyses based on 100 individuals revealed a mean lorica length of 124.8 µm (range: 65.0–208.5 µm), a mean lorica oral diameter (LOD) of 19.6 µm (range: 10.0–36.0 µm), and a mean L/LOD ratio of 6.5 (range: 3.8–9.2).
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Conclusion & Impact:This study documents the first Mediterranean occurrence of L. simplex and provides a concise biogeographical overview of its global distribution.
🔬Design:Araştırma Makalesi
📍Scope:2025 Verileri
⚙️Variables:Tintinnidiidae · lorica morfolojisi · mikrozooplankton

Abstract

Leprotintinnus simplex Schmidt, 1902 was recorded for the first time in İzmir Bay during plankton monitoring conducted in September 2025. The species was observed at all three sampling stations, albeit at varying abundances. Morphometric analyses based on 100 individuals revealed a mean lorica length of 124.8 µm (range: 65.0–208.5 µm), a mean lorica oral diameter (LOD) of 19.6 µm (range: 10.0–36.0 µm), and a mean L/LOD ratio of 6.5 (range: 3.8–9.2). The tapering angle of the lorica from the oral to the aboral end averaged 2.4° (range: 0.9°–3.8°). These measurements fall within the range of global morphological variation previously reported for the species. The detection of L. simplex in İzmir Bay suggests that the species may have been introduced via maritime transport, most likely through ship ballast water. Previously reported from the Indian Ocean, the South Pacific Ocean, the Atlantic Ocean, and the Gulf of Mexico, the species is here recorded for the first time from the Mediterranean Sea. This study documents the first Mediterranean occurrence of L. simplex and provides a concise biogeographical overview of its global distribution.

Özet

Leprotintinnus simplex Schmidt, 1902, 2025 yılı Eylül ayında gerçekleştirilen plankton izleme çalışmaları sırasında İzmir Körfezi'nde ilk kez kaydedildi. Tür, üç örnekleme istasyonunda da farklı yoğunluklarda gözlendi. 100 bireye dayalı morfometrik analizler, ortalama lorikanın uzunluğunun 124,8 µm (aralığı: 65,0–208,5 µm), ortalama lorikanın ağız çapının (LOD) 19,6 µm (aralığı: 10,0–36,0 µm) ve ortalama L/LOD oranının 6,5 (aralığı: 3,8–9,2) olduğunu ortaya koydu. Lorikanın ağız ucundan aboral uca doğru incelme açısı ortalama 2,4° (0,9°–3,8°) olarak bulundu. Bu ölçümler, tür için bildirilen küresel morfolojik varyasyon içinde yer almaktadır. İzmir Körfezi'nde L. simplex'in tespit edilmesi, türün deniz yoluyla, büyük olasılıkla gemi balast suları aracılığıyla taşınmış olabileceğini düşündürmektedir. Daha önce Hint Okyanusu, Güney Pasifik Okyanusu, Atlantik Okyanusu ve Meksika Körfezinde saptanan tür ilk kez olarak Akdeniz'de bu çalışmada İzmir Körfezi’nde rastlanmıştır. Bu çalışma, L. simplex'in Akdeniz’deki ilk bulunuşunu belgelemekte ve türün küresel dağılımı hakkında biyocoğrafik özet bilgiler sunmaktadır.

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Cite This Article

Yurga, L. (2026). First Mediterranean Record of the Tintinnid, Leprotintinnus simplex (Schmidt, 1902) from İzmir Bay (Aegean Sea, Türkiye). Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries, Cilt: 9 Sayı: 1, 26–38. https://doi.org/10.46384/jmsf.1835234

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