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Journals / 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
Pages
1259–1266
Publication Date
2005-06-01
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

This study demonstrated the effects of high salinity through direct and gradual acclimations on branchial Na+-K+-ATPase activity and chloride cell abundance.

📌 3 Key Takeaways

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Objective & Hypothesis: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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Key Findings & Data:Branchial chloride cell numbers decreased after seawater exposure, whereas a gradual increase was observed in chloride cell sizes.
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Conclusion & Impact:This study demonstrated the effects of high salinity through direct and gradual acclimations on branchial Na+-K+-ATPase activity and chloride cell abundance.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Oreochromis niloticus · salinity · gill

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.

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.

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Cite This Article

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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References (10)

  1. Suresh, A.V., Lin, C.K.: Tilapia culture in saline waters: a review. Aquaculture, 1992; 106: 201-226. 8. Hwang, P.P., Sun, C.M., Wu, S.M.: Changes of plasma osmolarity chloride concentration and gill Na+-K+-ATPase activity in tilapia O. mossambicus during seawater acclimation. Mar. Biol., 1989; 100: 295-299. 9. Hinton D.E.: Histological Techniques. In: Schreck, C.B., Moyle, P.B., Eds. Methods for Fish Biology. Am. Fish. Soc., Maryland, 1990; 191-209.
  2. Powell, M.D., Parsons, H.J., Nowak, B.F.: Physiological effects of freshwater bathing of Atlantic salmon (Salmo salar) as a treatment for amoebic gill disease. Aquaculture. 2001; 199: 259- 266. Canli M., Stagg R.M.: The effects of in vivo exposure to cadmium, copper and zinc on the activities of gill ATPases in the Norway lobster, Nephrops norvegicus. Arch. Environ. Contam. Toxicol., 1996; 31: 494-501.
  3. Lowry, O.H., Rosebrough, N.J., Farr, A.L., Randall, R.J.: Protein measurements with the Folin phenol reagent. J. Biol. Chem. 1951; 193: 265-275.
  4. Vonck, A.P.M.A., Wendelaar Bonga, S.E., Flik, G.: Sodium and calcium balance in Mozambique tilapia, Oreochromis mossambicus, raised at different salinities. Comp. Biochem. Physiol. A: Mol. Integr. Physiol., 1998; 119: 441-449.
  5. Morgan, J.D., Sakamoto, T., Grau, E.G., Iwama, G.K.: Physiological and respiratory responses of the Mozambique tilapia (Oreochromis mossambicus) to salinity acclimation. Comp. Biochem. Physiol. A: Physiol., 1997; 117: 391-398.
  6. Fontainhas-Fernandes, A., Monteiro, M., Gomes, E., Reis- Henriques, M.A., Coimbra, J.: Effect of dietary sodium chloride acclimation on growth and plasma thyroid hormones in tilapia Oreochromis niloticus (L.) in relation to sex. Aquacult. Res., 2000; 31: 507-517.
  7. Avella, M., Berhaut, J., Bornancin, M.: Salinity tolerance of two tropical fishes, O. aureus and O. niloticus, Biochemical and morphological changes in the gill epithelium. J. Fish. Biol. 1993; 42: 243-254.
  8. Nolan, D.T., Op’t Veld, R.L.J.M., Balm, P.H.M., Wendelaar Bonga, S.E.: Ambient salinity modulates the response of the tilapia, Oreochromis niloticus (Peters), to net confinement. Aquaculture, 1999; 177: 297-309.
  9. Lee, T.H., Hwang, P.P., Shieh, Y.E., Lin, C.H.: The relationship between ‘deep-hole’ mitochondria-rich cells and salinity adaptation in the euryhaline teleost, Oreochromis mossambicus. Fish Physiol. Biochem., 2000; 23: 133-140.
  10. Bashamohiden, M., Parvatheeswararao, V.: Adaptations to osmotic stress in the freshwater euryhaline teleost, Tilapia mossambica.