Turkish Journal of Veterinary and Animal Sciences

Turkish Journal of Veterinary and Animal Sciences

Effects of Salinity on the Osmoregulatory Functions of the Gills in Nile Tilapia (Oreochromis niloticus)

Yazarlar: Yusuf GÜNER, Osman ÖZDEN, Haşmet ÇAĞIRGAN, Muhammet ALTUNOK, Volkan KIZAK

Cilt 29 , Sayı 6 , 2005 , Sayfalar 1259 - 1266

Konular:-

Anahtar Kelimeler:Oreochromis niloticus,Salinity,Gill,Osmoregulation

Özet: Changes in branchial Na+-K+-ATPase activity, and the number and size of chloride cells resulting from the transfer of fish into seawater were investigated in tilapia (Oreochromis niloticus) (22.03 -+ 0.91 g), which were transferred to full strength seawater (36‰) directly and for 14 days. Whole mortality occurred when the tilapia were transferred into seawater directly. That is, no acclimation was allowed. Branchial chloride cell numbers decreased after seawater exposure, whereas a gradual increase was observed in chloride cell sizes. However, the chloride cells of seawater-adapted individuals showed a 2-fold increase in size (P < 0.05). Initially 5‰ and 10‰ salinity resulted in lowered branchial Na+-K+-ATPase activity but then this activity increased and the highest activity was at 25‰ salinity (P < 0.01). This study demonstrated the effects of high salinity through direct and gradual acclimations on branchial Na+-K+-ATPase activity and chloride cell abundance.

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@article{2005, title={Effects of Salinity on the Osmoregulatory Functions of the Gills in Nile Tilapia (Oreochromis niloticus)}, volume={29}, number={6}, publisher={Turkish Journal of Veterinary and Animal Sciences}, author={Yusuf GÜNER,Osman ÖZDEN,Haşmet ÇAĞIRGAN,Muhammet ALTUNOK,Volkan KIZAK}, year={2005}, pages={1259–1266} }
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Yusuf GÜNER,Osman ÖZDEN,Haşmet ÇAĞIRGAN,Muhammet ALTUNOK,Volkan KIZAK. (2005). Effects of Salinity on the Osmoregulatory Functions of the Gills in Nile Tilapia (Oreochromis niloticus) (Vol. 29, pp. 1259–1266). Vol. 29, pp. 1259–1266. Turkish Journal of Veterinary and Animal Sciences.
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Yusuf GÜNER,Osman ÖZDEN,Haşmet ÇAĞIRGAN,Muhammet ALTUNOK,Volkan KIZAK. Effects of Salinity on the Osmoregulatory Functions of the Gills in Nile Tilapia (Oreochromis Niloticus). no. 6, Turkish Journal of Veterinary and Animal Sciences, 2005, pp. 1259–66.
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