The Effects of Different Malathion Concentrations on Algal Growth in Cultural Conditions

Elif Soylu; Bengü Temizel

Makale detayları

The Effects of Different Malathion Concentrations on Algal Growth in Cultural Conditions

Yazarlar:

Elif Soylu | Bengü Temizel

Yayıncı:

Giresun University

Ana Başlıklar:

Yapısal Biyoloji

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.13 Issue 4, pp.1510-1522

Belge Tipi:

Makale

Yayın Tarihi:

12/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001305311

pISSN:

2564-7377

Anahtar kelimeler:

Özet:

 Malathion is one of the insecticides commonly used to control hazelnut pests in hazelnut orchards in Giresun region. This insecticide pollutes lakes, rivers and sea waters by drifting from the soil with rain, flood and snow waters. In this study, Scenedesmus sp. cultures were prepared in BG-11 medium for use in laboratory experiments. It was aimed to determine the change in algal growth due to the increase in malathion concentration applied to these cultures. Growth of strains in cultures treated with malathion at doses of 0.05 mgL, 0.5 mgL, 1 mgL, 5 mgL and 10 mgL were compared with those grown in non-malathion cultures. In addition, pH was measured and chlorophyll-a values were also calculated for the control group and the cultures to which malathion was added during the study. Cell number showed different changes over time according to pesticide concentrations. The highest number of cells was 3.61x106 cellsml at 10 mgL dose at the end of 24th hour and the lowest number of cells was 2.05x106 cellsml at 10 mgL dose at the end of 48th hour. pH values did not fluctuate much and generally decreased at the end of 96th hour. The lowest chlorophyll-a was calculated as 0.35 µgL at 96th hour. As a result, it was determined that the doses studied negatively affected algal growth, although not too much.

 Malathion is one of the insecticides commonly used to control hazelnut pests in hazelnut orchards in Giresun region. This insecticide pollutes lakes, rivers and sea waters by drifting from the soil with rain, flood and snow waters. In this study, Scenedesmus sp. cultures were prepared in BG-11 medium for use in laboratory experiments. It was aimed to determine the change in algal growth due to the increase in malathion concentration applied to these cultures. Growth of strains in cultures treated with malathion at doses of 0.05 mgL, 0.5 mgL, 1 mgL, 5 mgL and 10 mgL were compared with those grown in non-malathion cultures. In addition, pH was measured and chlorophyll-a values were also calculated for the control group and the cultures to which malathion was added during the study. Cell number showed different changes over time according to pesticide concentrations. The highest number of cells was 3.61x106 cellsml at 10 mgL dose at the end of 24th hour and the lowest number of cells was 2.05x106 cellsml at 10 mgL dose at the end of 48th hour. pH values did not fluctuate much and generally decreased at the end of 96th hour. The lowest chlorophyll-a was calculated as 0.35 µgL at 96th hour. As a result, it was determined that the doses studied negatively affected algal growth, although not too much.

 Malathion is one of the insecticides commonly used to control hazelnut pests in hazelnut orchards in Giresun region. This insecticide pollutes lakes, rivers and sea waters by drifting from the soil with rain, flood and snow waters. In this study, Scenedesmus sp. cultures were prepared in BG-11 medium for use in laboratory experiments. It was aimed to determine the change in algal growth due to the increase in malathion concentration applied to these cultures. Growth of strains in cultures treated with malathion at doses of 0.05 mgL, 0.5 mgL, 1 mgL, 5 mgL and 10 mgL were compared with those grown in non-malathion cultures. In addition, pH was measured and chlorophyll-a values were also calculated for the control group and the cultures to which malathion was added during the study. Cell number showed different changes over time according to pesticide concentrations. The highest number of cells was 3.61x106 cellsml at 10 mgL dose at the end of 24th hour and the lowest number of cells was 2.05x106 cellsml at 10 mgL dose at the end of 48th hour. pH values did not fluctuate much and generally decreased at the end of 96th hour. The lowest chlorophyll-a was calculated as 0.35 µgL at 96th hour. As a result, it was determined that the doses studied negatively affected algal growth, although not too much.

 Malathion, Giresun yöresindeki fındık bahçelerinde fındık zararlılarını yok etmek için yaygın olarak kullanılan insektisitlerden biridir. Bu insektisit yağmur, sel ve kar suları ile topraktan sürüklenerek göl, nehir ve deniz sularını kirletmektedir. Bu çalışmada, laboratuar deneylerinde kullanılmak üzere BG-11 besiyerinde Scenedesmus sp. kültürleri hazırlanmıştır. Bu kültürlere uygulanan malathion konsantrasyonundaki artışa bağlı olarak alg gelişimindeki değişimin belirlenmesi amaçlanmıştır. 0.05 mgL, 0.5 mgL, 1 mgL, 5 mgL ve 10 mgL dozlarında malathion uygulanan kültürlerdeki suşların büyümesi, malathion olmayan kültürde yetiştirilenlerle karşılaştırılmıştır. Ek olarak kontrol grubu ve çalışma sırasında malathion eklenmiş kültürlerin çalışma süresince pH ölçümleri yapılmış ve klorofil-a değerleri de ayrıca hesaplanmıştır. Hücre sayısı pestisit konsantrasyonlarına göre zamanla farklı değişimler göstermiştir. En fazla hücre 24. saat sonunda 10 mgL dozunda 3,61x106 hücreml; en az hücre ise 48. saat sonunda yine 10 mgL dozunda 2,05x106 hücreml olarak ölçülmüştür. pH değerlerinin çok fazla dalgalanma göstermediği, 96. saat sonunda genel olarak düştüğü belirlendi. En düşük klorofil-a ise 96. saatte 0,35 µgL olarak hesaplanmıştır. Sonuç olarak çalışılan dozların alg gelişimini çok fazla olmasa da olumsuz etkilediği belirlenmiştir.

Makale detayları

The Effects of Different Malathion Concentrations on Algal Growth in Cultural Conditions

Yazarlar:

Elif Soylu | Bengü Temizel

Yayıncı:

Giresun University

Ana Başlıklar:

Yapısal Biyoloji

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.13 Issue 4, pp.1510-1522

Belge Tipi:

Makale

Yayın Tarihi:

12/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001305311

pISSN:

2564-7377

Stream

green algae

algal growth

pesticide

malathionNehir

yeşil alg

algal büyüme

pestisit

malathion

Sayı

Makale detayları

Yazarlar: Elif Soylu | Bengü Temizel

Yayıncı: Giresun University

Ana Başlıklar: Yapısal Biyoloji

Dergi: Karadeniz Fen Bilimleri Dergisi Vol.13 Issue 4, pp.1510-1522

Belge Tipi: Makale

Yayın Tarihi: 12/2023

Belge Dili: İngilizce

Document ID (Org No.): 2001305311

pISSN: 2564-7377

Sayı

Yazarlar:

Elif Soylu | Bengü Temizel

Yayıncı:

Giresun University

Ana Başlıklar:

Yapısal Biyoloji

Dergi:

Karadeniz Fen Bilimleri Dergisi Vol.13 Issue 4, pp.1510-1522

Belge Tipi:

Makale

Yayın Tarihi:

12/2023

Belge Dili:

İngilizce

Document ID (Org No.):

2001305311

pISSN:

2564-7377