Paddy rice soils, which can contain
elevated levels of arsenic, also have importance in crayfish production in
Louisiana (USA). In this study, arsenic accumulation and depuration in the
tissues of crayfish (Procamborus clarkii) exposed to different As
concentrations were determined. For this purpose, crayfish were exposed to 3
different concentrations of As (0,2; 0,8 and 2 mg As L-1) for 14 days and then
kept in As free water for following 14 days. Arsenic concentrations were
determined in crayfish tissues (gill, muscle, exoskeleton, hepatopancreas) during
both the accumulation (1, 3, 7 and 14th days) and depuration (15, 17, 21, and
28th days) phases. During the accumulation period, arsenic concentration in the
tissues was found to increase proportionally with time and exposure
concentrations: gill > hepatopancreas > exoskeleton > muscle. During
this period, however, the arsenic concentration in the tissues did not reach
the equilibrium. In the depuration phase, arsenic elimination varied ranging
between 54.63-87.91% in the hepatopancreas, 42.69 to 74.21% in the gills,
35.56-73.55% in the exoskeletons and 26.75-49.84% in the muscles.
I thank the Council of Higher Education of Turkey for supporting Kenan Gedik. I also thank Dr. Ronald D. DeLaune and Dr. Manoch Kongchum for suggestions and comments on the manuscript.
Birincil Dil | İngilizce |
---|---|
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 30 Aralık 2019 |
Gönderilme Tarihi | 19 Haziran 2019 |
Kabul Tarihi | 5 Ağustos 2019 |
Yayımlandığı Sayı | Yıl 2019 |