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Histopathology of the Tissue of a Tubificid Worm (Limnodrilus hoffmeisteri) Exposed to Cadmium

Journal Name:

  • Çankaya University Journal of Science and Engineering

Publication Year:

  • 2012

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
Abstract. Although cadmium is not an essential element for any organism, oligocheates - especially Tubificid worms - accumulate large concentrations of cadmium like other freshwater specimens. In addition, some species such as the ones that belong to Limnodrilus genera use indicator organisms. The aim of this study is to examine histopathological alterations induced experimentally by cadmium in tubificid worms (Limnodrilus hoffmeisteri ) exposed for different times, and at different concentrations, and these were compared to controls. Live specimens were collected at 3 sampling sites from the Porsuk River. Samples were exposed to the contaminant for short periods of 6, 12, 24, 48 and 72 h at two different concentrations of 0.25 and 0.5 mg/L. Samples were embedded in paraffin blocks and were cut at 5 on a microtome. All sections were stained using Hematoxylin & Eosin. Our results showed no alterations (6, 12, 24, 48 h) compared with controls. However, after exposure for 72 h. results showed different alterations.
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Abstract (Original Language): 
Kadmiyum herhangi bir organizma icin gerekli bir element olmasa da oligocheateler -özellikle de Tubificid solucanları- diger tatlı su örnekleri gibi kadmiyumu büyük yogunlukta biriktirir. Bununla birlikte Limnodrilus cinsine ait olan bazı törler de indikatör organizmalar olarak kullanabilir. Bu calışmada; farklı zamanlarda ve konsantrasyonlarda kadmiyuma maruz kalan tubificidler (Limnodrilus hoffmeisteri) deneysel olarak kontrol grubu ile karşılaştırılmış ve histopatolojik değişiklikleri incelenmiştir. Canlı örnekleri Porsuk Nehri'nin 3 farklı örnekleme alanından toplanmıştır. Örnekler iki farklı konsantrasyonda 0.25 ve 0.5 mg/L olarak 6, 12 ,24 ,48 ve 72 saatlik kısa sörelerde kirleticiye maruz bırakılmıştır. (Örnekler parafin bloklara gomulmös ve mikrotomda 5 mikron olarak kesilmiştir. Tum kesitler Hematoksilen & Eosin ile boyanmıştır. Deney sonunda (6, 12, 24, 48 saatlik grublar) kontrol grubu ile karşılaştırıldığında degişiklik gostermemiştir. Ancak 72 saat sureyle kirleticiye maruz kalan gruplarda farklı sonudar gozlenmiştir.
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  • 1
69-73
  • English

REFERENCES

References: 

[1] J. R. Jennings and P. S. Rainbow, Studies on the uptake of cadmium by the crab Carcinus maenas in the laboratory. 1. Accumulation from seawater and a food source, Marine Biology 50 (1979), 131-139.
[2] R. Najle, M. Elissondo, S. Gentile, M. Gentile, G. Vacarezza and H. Solana, Histopathology of the digestive gland of an Antarctic limpet exposed to cadmium, The Science of the Total Environment 247 (2000), 263-268.
[3] G. A. Burton, Assessing contaminated aquatic sediments, Environmental Science & Technology 26 (1992), 1862-1863.
[4] R. Dallinger, F. Prosi, H. Segner and H. Back, Contaminated food and uptake of heavy metals by fish: a review and a proposal for further research, Oecologia 73 (1987), 91-98.
[5] K. R. Timmermans, E. Spijkerman, M. Tonkes and H. Govers, Cadmium and zinc uptake by two species of aquatic invertebrate predators from dietary and aqueous sources, Canadian Journal of Fisheries and Aquatic Sciences 49 (1992), 655-662.
[6] A. Z. Mason, The Uptake, Accumulation and Excretion of Metals by the Marine Prosobranch Gastropod Mollusc Littorina Littorea (L.), PhD. Thesis, University of Wales (U.C.N.W., Bangor: Marine Science), 1983.
[7] I. A. Marigomez, M. P. Cajaraville and E. Angulo, Histopathology of digestive gland com¬plex of the marine prosobranch Littorina littorea exposed to cadmium, Diseases of Aquatic
Organisms 9 (1990), 229-238.
[8] W. J. G. M. Peijnenburg, R. Baerselman, A. C. de Groot, T. Jager, L. Posthuma and R. P. M. Van Veen, Relating environmental availability to bioavailability: Soil-type-dependent metal accumulation in the oligochaete Eisenia andrei, Ecotoxicology and Environmental Safety 44 (1999), 294-310.
[9] L. Ramos, M. J. Gonzalez and L. M. Hernandez, Sequential extraction of copper, lead, cad¬mium, and zinc in sediments from Ebro River (Spain): Relationship with levels detected in earthworms, Bulletin of Environmental Contamination and Toxicology 62 (1999), 301-308

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