Canik Tuzlası’ndaki (Erciş-Van) Kriptik Siliyat (Ciliophora) Biyoçeşitliliği

Year 2025, Volume: 30 Issue: 2, 412 - 420, 31.08.2025

Naciye Gülkız Şenler , İsmail Yıldız

https://doi.org/10.53433/yyufbed.1649822

Abstract

Bu çalışmada, aşırı tuzlu ekstrem bir ekosistem olan Canik Tuzlası’ndaki (Erciş-Van) kriptik (örnekleme sırasında aktif olmayan) siliyat çeşitliliği belirlendi. Örnekler tuz tesisinde bulunan 56 buharlaştırma havuzundan steril koşullar altında kompozit olarak alındı. Alınan su örneklerinin başlangıç tuzluluk oranları ‰170-340 arasında ölçüldü. Bu tuzluluklara sahip örnekler üzerinde yapılan incelemelerde hiçbir aktif siliyat türü gözlenmedi. Ancak hazırlanan seyreltme kültürlerinde tuz yoğunluğunun ‰5-85 aralığında seyreltilmesi ve besin ilavesi ile zenginleştirilmiş alt kültürlerde siliyat türleri gözlendi ve Canik Tuzlası’ndaki siliyat türlerinin tümünün kriptik (gizli) olarak tohum bankasında saklı olduğunu ve uygun büyüme koşullarını bekledikleri anlaşıldı. Seyreltme kültürlerinde üreyen siliyat türleri hem canlı hem de çeşitli gümüş boyama teknikleri uygulanarak ve siliyatolojide kullanılan temel eserlerden yararlanılarak türlerin teşhisleri gerçekleştirildi. Çalışmada 8 siliyat türü (Euplotes moebiusi, Urosoma sp., Oxytricha oxymarina, Oxytricha sp., Bryophyllum sp., Edaphospathula sp., Pseudocohnilembus pusillus, P. persalinus) teşhis edildi. Yeterli sayıda birey elde edilemediği için üç hypotrich türünün teşhisi yapılamadı. Tür çeşitliliği açısından Canik Tuzlası’nın oldukça fakir olduğu bulunmuştur. Bu durumun olası nedenleri tartışılmıştır.

Keywords

Ekstrem habitat , Gizli biyoçeşitlilik , Siliyat , Tuzla

Supporting Institution

Van Yüzüncü Yıl Üniversitesi, Bilimsel Araştırma Projeleri Koordinasyon Birimi

Project Number

2009 FBE-YL-027

Thanks

Bu çalışmayı 2009 FBE-YL-027 numaralı proje ile destekleyen Van Yüzüncü Yıl Üniversitesi, Bilimsel Araştırma Projeleri Koordinasyon Birimi’ne teşekkür ederiz.

Cryptic Ciliate (Ciliophora) Biodiversity in Canik Tuzlası (Erciş-Van)

Abstract

In this study, the cryptic (inactive at the time of sampling) ciliate diversity in Canik solar saltern (Erciş-Van), an extremely saline ecosystem, was determined. Samples were taken as composites from 56 evaporation ponds in the saltern under sterile conditions. The initial salinities of the water samples were measured between 170-340 ‰. No active ciliate species were observed in the samples at these salinities. However, ciliate species were observed in subcultures enriched by dilution of the salt concentration in the range of 5-85 ‰ and addition of nutrients, and it was understood that all of the ciliate species in Canik Tuzlası were cryptically hidden in the seed bank and were waiting for suitable growth conditions. The ciliate species grown in dilution cultures were identified both in vivo and by applying various silver staining techniques and using the basic literature used in ciliatology. In present work eight ciliate species (Euplotes moebiusi, Urosoma sp., Oxytricha oxymarina, Oxytricha sp., Bryophyllum sp., Edaphospathula sp., Pseudocohnilembus pusillus, P. persalinus) were identified. Three hypotrich species could not be identified due to insufficient number of individuals. Canik Tuzlası was found to be rather poor in terms of species diversity. Possible reasons for this situation are discussed.

Keywords

Ciliate , Cryptic biodiversity , Extreme habitat , Solar saltern

Project Number

2009 FBE-YL-027

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