Heterostropha species of the Turkish coasts: Anisocycla, eulimella, puposyrnola, syrnola and Turbonilla (gastropoda, heterobranchia)

Anisocycla, Eulimella, Puposyrnola, Syrnola ve Turbonilla genuslarını içeren bu çalışma, Chrysallida ve Odostomiinae türlerini kapsayan çalışmaların ardından, Türkiye kıyılarında dağılım gösteren heterostrofik protokonka sahip türler ile ilgili üçüncü araştırmadır. İncelenen materyal, 1996-2012 yılları arasında Türkiyenin Levantine Denizi, Ege Denizi ve Marmara Denizinin 0,5 ile 1302 m arasında değişen derinliklerinden toplanmıştır. Örneklenen materyalin incelenmesi sonucu Anisocycla genusuna ait dört tür (A. gradata, A. nitidissima, A. pointeli ve A. striatula), Eulimellla genusuna ait 5 tür (E. acicula, E. neoattenuata, E. scillae, E. ventricosa ve E. unifasciata), Puposyrnola genusuna ait bir tür (P. minuta), Syrnola genusuna ait iki tür (S. fasciata ve S. lendix) ve Turbonilla genusuna ait on iki tür (T. acuta, T. acutissima, T. hamata, T. jeffreysi, T. lactea, T. micans, T. paucistriata, T. pseudogradata, T. pumila, T. pusilla, T. rufa ve T. striatula) saptanmıştır. Bu türlerden E. neoattenuata Doğu Akdeniz, T. paucistriata Levantine Denizi ve Ege Denizi, P. minuta ve T. micans Ege Denizi, E. striatula ve T. pseudogradata Türkiye Mollusca faunası, T. acutissima Türkiyenin Ege Denizi kıyıları ve Marmara Denizi ve altı tür (A. gradata, A. nitidissima, E. scillae, E. unifasciata, T. lactea ve T. pumila) Türkiyenin Ege Denizi kıyıları için ilk defa bildirilmektedir. Tespit edilen türlerin çoğunluğu 100 m derinliğe kadar olan kıyı bölgesinde dağılım gösterirken, 1302 m derinliklere kadar rastlanmış olan E. ventricosa, T. micans ve T. paucistriata ise daha derin dağılımlı türler olarak dikkat çekmektedirler. Diğer taraftan, saptanan 23 türden, T. rufa Türkiye kıyılarında en bol bulunan tür, E. acicula, T. acuta ve T. pusilla ise dört denizimizde de rastlanan en geniş dağılımlı türlerdir. Bu çalışmada, türlerin ekolojik ve taksonomik özelliklerinin yanısıra, denizlerimize göre dağılımları ile ilgili bilgilere de yer verilmiştir

Türkiye kıyıları heterostropha türleri: Anisocycla, eulimella, puposyrnola, syrnola ve Turbonilla (gastropoda, heterobranchia)

The present study, including Anisocycla, Eulimella, Puposyrnola, Syrnola and Turbonilla genera, is the third one dealing with the species having heterostrophic protoconch distributed along the Turkish coasts, following the genus Chrysallida and the subfamily Odostomiinae. The material was collected in the Turkish Levantine and Aegean Seas, and the Sea of Marmara at depths varying from 0.5 to 1302 m between the years 1996 and 2012. The examination of the collected material revealed four species of Anisocycla (A. gradata, A. nitidissima, A. pointeli and A. striatula), five species of Eulimella (E. acicula, E. neoattenuata, E. scillae, E. ventricosa and E. unifasciata), one species of Puposyrnola (P. minuta), two species of Syrnola (S. fasciata and S. lendix) and twelve species of Turbonilla (T. acuta, T. acutissima, T. hamata, T. jeffreysi, T. lactea, T. micans, T. paucistriata, T. pseudogradata, T.pumila, T. pusilla, T. rufa and T. striatula). Of the identified species, E. neoattenuata forms a new record for the eastern Mediterranean, T. paucistriata is new report for the Levantine and Aegean Seas, P. minuta and T. micans are new ones for the Aegean Sea, E. striatula and T. pseudogradata are new records for the Turkish molluscan fauna, T. acutissima is a new one for the Turkish Aegean Sea fauna and Sea of Marmara and six species ( A. gradata, A. nitidissima, E. scillae, E. unifasciata, T. lactea and T. pumila) are new records for the Turkish Aegean coast. Most of the identified species are distributed in littoral depths down to 100 m, whereas E. ventricosa, T. micans and T. paucistriata are significant as species distributed at deeper bottoms, found at depths of up to 1302 m. On the other hand, out of the 23 species encountered in this study, T. rufa is the most abundant species along the Turkish coasts, however E. acicula, T. acuta and T. pusilla are species with the widest distribution. Some ecological characteristics and taxonomic remarks, with distribution features of the species dealt with herein are also provided

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