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Dergiler / Turkish Journal of Veterinary and Animal Sciences / 2005 / Cilt: 29 - Sayı: 6

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

Yusuf GÜNER
Osman ÖZDEN
Haşmet ÇAĞIRGAN
Muhammet ALTUNOK
Volkan KIZAK
Sayfa
1259–1266
Yayın Tarihi
2005-06-01
DOI
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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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Amaç & Hipotez: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.
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Temel Bulgular & Veri:Branchial chloride cell numbers decreased after seawater exposure, whereas a gradual increase was observed in chloride cell sizes.
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Sonuç & Katkı:This study demonstrated the effects of high salinity through direct and gradual acclimations on branchial Na+-K+-ATPase activity and chloride cell abundance.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Oreochromis niloticus · salinity · gill

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&#8240;) 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&#8240; and 10&#8240; salinity resulted in lowered branchial Na+-K+-ATPase activity but then this activity increased and the highest activity was at 25&#8240; 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.

Abstract

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&#8240;) 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&#8240; and 10&#8240; salinity resulted in lowered branchial Na+-K+-ATPase activity but then this activity increased and the highest activity was at 25&#8240; 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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Bu Makaleye Atıf Yap

GÜNER, Y., ÖZDEN, O., ÇAĞIRGAN, H., ALTUNOK, M., KIZAK, V. (2005). Effects of Salinity on the Osmoregulatory Functions of the Gills in Nile Tilapia (Oreochromis niloticus). Turkish Journal of Veterinary and Animal Sciences, Cilt: 29 - Sayı: 6, 1259–1266. https://ajindex.com/articles/122168

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Kaynakça (10)

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