Growth responses of a Cylindrotheca closterium strain from the Golden Horn Estuary to temperature, salinity and irradiance

Sebahat Şemin; Seyfettin Taş; Fuat Dursun; Rabia Sezgin; Turgay Durmuş; Muharrem Balcı; Halim Aytekin Ergül

doi:10.12714/egejfas.43.2.05

EN TR

Growth responses of a Cylindrotheca closterium strain from the Golden Horn Estuary to temperature, salinity and irradiance

Abstract

The growth response of a diatom Cylindrotheca closterium strain (DEB132303) isolated from the Golden Horn Estuary (Sea of Marmara) was investigated under different environmental conditions. C. closterium cells were grown in a silica-enriched K-medium under various temperatures (11, 18, 25 and 32°C), salinities (6, 12, 18, 24, 30 and 36 psu) and irradiances (10, 20, 50 and 65 μmol photons m⁻² s⁻¹). By the end of the acclimatization period, no viable C. closterium cells were present at temperatures of 4°C and 32°C and salinities of 6 and 36 psu, which marked the upper and lower boundaries of its environmental tolerance. The maximum specific growth rates (µmax) were 1.45 d⁻¹ at temperature of 18°C (18 psu, 50 μmol foton m⁻² s⁻¹), 1.08 d⁻¹ at salinity of 24 psu ( 18°C, 50 μmol foton m⁻² s⁻¹) and 1.80 d⁻¹ at irradiance of 65 μmol photons m⁻² s⁻¹ (18°C, 18 psu), in temperature, salinity and light experiments, respectively. The maximum cell density (Dmax) was 5×10⁵ cells mL⁻¹ at temperature of 25°C, salinity of 18 psu and irradiance of 50 μmol photons m⁻² s⁻¹. Growth rate varied significantly among different temperature, salinity and irradiance treatments (ANOVA, p<0.001) and there was a positive correlation between growth rate and irradiance (r= 0.98, p<0.01). These results demonstrate that these environmental parameters affect significantly the growth of this C. closterium strain.

Keywords

Destekleyen Kurum

This work was supported by the Scientific Research Projects Coordination Unit of Istanbul University and The Scientific and Technological Research Council of Türkiye (TUBITAK). Project numbers: FBA-2022-39324, FDK-2023-39989 and TUBITAK 1001–121Y389.

Proje Numarası

FBA-2022-39324, FDK-2023-39989 and TUBITAK 1001–121Y389.

Etik Beyan

No specific ethical approval was required for this study.

Kaynakça

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Ayrıntılar

Birincil Dil

İngilizce

Konular

Deniz ve Nehir Ağzı Ekolojisi , Sucul Kültür

Bölüm

Araştırma Makalesi

Yazarlar

Sebahat Şemin ^*
0000-0002-1411-0089
Türkiye

Seyfettin Taş
0000-0002-4660-3937
Türkiye

Fuat Dursun
0000-0002-7729-5893
Türkiye

Rabia Sezgin
0000-0002-6321-2954
Türkiye

Turgay Durmuş
0000-0002-8242-1823
Türkiye

Muharrem Balcı
0000-0001-9373-6647
Türkiye

Halim Aytekin Ergül
0000-0002-9313-1426
Türkiye

Yayımlanma Tarihi

31 Mart 2026

Gönderilme Tarihi

19 Ocak 2026

Kabul Tarihi

23 Mart 2026

Yayımlandığı Sayı

Yıl 1970 Cilt: 43 Sayı: 2

DOI

https://doi.org/10.12714/egejfas.43.2.05

IZ

https://izlik.org/JA62BZ83LD

Kaynak Göster

RIS / Bibtex

APA

Şemin, S., Taş, S., Dursun, F., Sezgin, R., Durmuş, T., Balcı, M., & Ergül, H. A. (2026). Growth responses of a Cylindrotheca closterium strain from the Golden Horn Estuary to temperature, salinity and irradiance. Ege Journal of Fisheries and Aquatic Sciences, 43(2), 129-137. https://doi.org/10.12714/egejfas.43.2.05

Haliç'ten elde edilen Cylindrotheca closterium suşunun sıcaklık, tuzluluk ve ışık karşısındaki büyüme tepkileri

Growth responses of a Cylindrotheca closterium strain from the Golden Horn Estuary to temperature, salinity and irradiance

Abstract

Keywords

Haliç'ten elde edilen Cylindrotheca closterium suşunun sıcaklık, tuzluluk ve ışık karşısındaki büyüme tepkileri

Öz

Anahtar Kelimeler

Destekleyen Kurum

Proje Numarası

Etik Beyan

Kaynakça

Ayrıntılar

Birincil Dil

Konular

Bölüm

Yazarlar

Yayımlanma Tarihi

Gönderilme Tarihi

Kabul Tarihi

Yayımlandığı Sayı

DOI

IZ

Kaynak Göster