May Simultaneous Exposure to Different Heavy Metals Influence the Bioaccumulation of Each Metal by Littorina saxatilis (Gastropoda; Littoriniidae)

Arash JAVANSHİR

Makale detayları

May Simultaneous Exposure to Different Heavy Metals Influence the Bioaccumulation of Each Metal by Littorina saxatilis (Gastropoda; Littoriniidae)

Yazarlar:

Arash JAVANSHİR

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 3

Belge Tipi:

Makale

Yayın Tarihi:

5/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000838277

Sıklık:

Üç Aylık

pISSN:

1303-2712

Anahtar kelimeler:

Özet:

 

Laboratory assessments of toxicity and bioaccumulation of heavy metals have been concentrated on the accumulation of these metal ions when exposed singly to the test organisms. However, under the natural environmental settings, the metals are never present in isolation and may interact with each other, therefore justifying the need to study the influence of joint  application of metals on accumulated levels in exposed animals. In this study, exposure of the periwinkle Littorina saxatilis to sublethal concentrations (equivalent to 0.1 and 0.01 of 96 h LC50) of heavy metals revealed that they were bioaccumulative varying amounts, depending on the type of metal, exposure period and their concentration in the test media. While Zn and Pb  ion accumulation increased steadily with exposure time, the amounts of Cu accumulated fluctuated regularly over the 30-day experimental period. The levels of Zn, Cu and Cd bioaccumulated over the 30-day experimental period were reduced by over  2-6 folds (with bioaccumulation ratio values ranging from 0.15 to 0.81) when compared to concentrations of the respective metals accumulated during single bioaccumulation studies. However, Pb concentrations accumulated during the joint action studies increased nearly 2-fold (bioaccumulation ratio range 1.36 to 2.0-fold). 	 	 		 .

 

Laboratory assessments of toxicity and bioaccumulation of heavy metals have been concentrated on the accumulation of these metal ions when exposed singly to the test organisms. However, under the natural environmental settings, the metals are never present in isolation and may interact with each other, therefore justifying the need to study the influence of joint  application of metals on accumulated levels in exposed animals. In this study, exposure of the periwinkle Littorina saxatilis to sublethal concentrations (equivalent to 0.1 and 0.01 of 96 h LC50) of heavy metals revealed that they were bioaccumulative varying amounts, depending on the type of metal, exposure period and their concentration in the test media. While Zn and Pb  ion accumulation increased steadily with exposure time, the amounts of Cu accumulated fluctuated regularly over the 30-day experimental period. The levels of Zn, Cu and Cd bioaccumulated over the 30-day experimental period were reduced by over  2-6 folds (with bioaccumulation ratio values ranging from 0.15 to 0.81) when compared to concentrations of the respective metals accumulated during single bioaccumulation studies. However, Pb concentrations accumulated during the joint action studies increased nearly 2-fold (bioaccumulation ratio range 1.36 to 2.0-fold). 	 	 		 .

Makale detayları

May Simultaneous Exposure to Different Heavy Metals Influence the Bioaccumulation of Each Metal by Littorina saxatilis (Gastropoda; Littoriniidae)

Yazarlar:

Arash JAVANSHİR

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 3

Belge Tipi:

Makale

Yayın Tarihi:

5/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000838277

Sıklık:

Üç Aylık

pISSN:

1303-2712

Periwinkle

filtration rate

absorption rate

Persian Gulf

metal pollution

Sayı

Makale detayları

May Simultaneous Exposure to Different Heavy Metals Influence the Bioaccumulation of Each Metal by Littorina saxatilis (Gastropoda; Littoriniidae)

Yazarlar: Arash JAVANSHİR

Yayıncı: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi: Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 3

Belge Tipi: Makale

Yayın Tarihi: 5/2012

Belge Dili: Türkçe

Document ID (Org No.): 2000838277

Sıklık: Üç Aylık

pISSN: 1303-2712

Periwinkle

filtration rate

absorption rate

Persian Gulf

metal pollution

Sayı

Yazarlar:

Arash JAVANSHİR

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2012 Vol.12 Issue 3

Belge Tipi:

Makale

Yayın Tarihi:

5/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000838277

Sıklık:

Üç Aylık

pISSN:

1303-2712