Specification of lethal concentration (LC50) of boron toxicity on daphnia pulex (Leydig, 1860) via using probit model

Year 2024, , 76 - 81, 28.06.2024

Burcu Yeşilbudak

https://doi.org/10.30728/boron.1415733

Abstract

Statistical models used in toxicity experiments have been quite useful tools in interpreting the organism's susceptibility, exposure response, amount of tolerable concentration, and function of tolerance time. In order to determine and evaluate the toxic effects of boron on Daphnia pulex (Leydig, 1860), different boron concentrations considered to be tolerable in aquatic ecosystems were tested for D. pulex. Percentage mortality rates at different boron concentrations and probit regression estimates at these concentrations were investigated through the static method. Probit analysis in this study revealed that rising boron concentrations led to mortality, and that finding was statistically significant with P value. These results indicate that the use of episodic boron, which enters the aquatic ecosystem through natural or unnatural means, should be planned due to its potential for stress or toxicity situations on organisms.

Keywords

Boron toxicity, mortality, regression estimate, Daphnia pulex

Daphnia pulex (Leydig, 1860) Üzerindeki Bor Toksisitesinin Öldürücü Konsantrasyonunun (LC50) Probit Model Kullanılarak Belirlenmesi

Abstract

Toksisite deneylerinde kullanılan istatistiksel modeller, organizmanın duyarlılığını, maruziyet tepkisini, tolere edilebilir konsantrasyon miktarını ve tolerans süresinin fonksiyonunu yorumlamada oldukça faydalı araçlar olmuşlardır. Borun Daphnia pulex (Leydig, 1860) üzerindeki toksik etkilerini belirlemek ve değerlendirmek amacıyla, su ekosistemlerinde tolere edilebilir olduğu düşünülen farklı bor derişimleri D. pulex için test edilmiştir. Farklı bor derişimlerindeki yüzde ölüm oranları ve bu derişimlerindeki probit regresyon tahminleri statik yöntemle araştırıldı. Bu çalışmada yapılan probit analizi, artan bor konsantrasyonlarının ölümlere yol açtığını ve bu bulgunun P değeri ile istatistiksel olarak anlamlı olduğunu ortaya koymuştur. Bu sonuçlar, su ekosistemine doğal veya doğal olmayan yollarla giren epizodik borun, organizmalar üzerindeki olası potansiyel stres veya toksisite durumları oluşturması nedeniyle kullanımının planlı olarak sürdürülmesi gerektiğini göstermektedir.

Keywords

Bor toksisitesi, mortalite, regresyon tahmini, Daphnia pulex

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