Study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, Huso huso (Linnaeus, 1758) in the south Caspian Sea: Effect of age and size
The salinity tolerance and hydromineral regulation capabilities of juvenile great sturgeon, Huso huso, of different age and size groups (I: 35 days, BW: 0.60±0.02g & TL; 4.80±0.13cm; II: 35 days, BW: 2.23±0.20g & TL: 7.19±0.17cm; III: 35 days, BW: 9.91±0.23g & TL: 11.86±0.24cm; IV: 50 da...
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2007
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ftoceandocs:oai:aquadocs.org:1834/37080 2023-05-15T15:41:57+02:00 Study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, Huso huso (Linnaeus, 1758) in the south Caspian Sea: Effect of age and size Farabi, S.M.V. Hajimoradloo, A. Bahmani, M. 2007 application/pdf 15-32 http://hdl.handle.net/1834/37080 en eng http://www.ifro.ir 1562-2916 http://hdl.handle.net/1834/37080 http://aquaticcommons.org/id/eprint/22294 18721 2018-03-13 20:27:17 22294 Iranian Fisheries Science Research Institute Biology Fisheries Huso huso haematological parameters Ion Cortisol Osmolarity Caspian Sea Iran article TRUE 2007 ftoceandocs 2023-04-06T17:05:49Z The salinity tolerance and hydromineral regulation capabilities of juvenile great sturgeon, Huso huso, of different age and size groups (I: 35 days, BW: 0.60±0.02g & TL; 4.80±0.13cm; II: 35 days, BW: 2.23±0.20g & TL: 7.19±0.17cm; III: 35 days, BW: 9.91±0.23g & TL: 11.86±0.24cm; IV: 50 days, BW: 3.97±0.25 g & TL: 9.34±0.18cm; V:50 days, BW:22.27±1.9g & TL: 17.25±0.35cm; VI: 65 days, BW: 6.3±0.67g & TL: 11.1±37cm n=90 for each group) in freshwater (FW:0.5 ppt), estuary water (EW:9.5 ppt) and the Caspian Sea water (CsW:12.5 ppt) were investigated. The fishes are directly transferred from FW to EW and CsW. The possible repercussions of osmoregulatory processes on some indicators of classical were examined at the end of 168 hours fish acclimation. Mortality was observed (higher than 50% after 72 hours) only in 1st group in EW and CsW. Some haematological parameters, namely haematocrit (Hct), red and white blood cells count (RBC, WBC), mean cell volume (MCV), hemoglobin concentration (Hb), mean cell hemoglobin concentration (MCHC), the amount of haemoglobin per erythrocyte (MCH), levels of cortisol, osmolarity and ion concentration (Na+, K+, Ca+2 and Mg+2) in the plasma were determined. The functional levels of the mechanism of osmotic and ionic homeostasis were similar in different groups (II to VI) but differed in experimental media (p<0.05). Significant differences were observed between the levels of serum Na+ concentration in different groups in EW and CsW media (p<0.05). Serum Na+ and Ca+2 concentrations were higher than those of FW and EW media, but lower than in CsW media. The Hct, MCV and MCH decreased with increase in fish age, and decreased from FW media to CsW media with increasing salinity; RBC, WBC and MCHC did not change. The trend of increasing levels of cortisol were observed at higher salinity in each group (P<0.05). However, Hct, MCV, MCHC, cortisol, osmolarity and ion concentration values did not return to initial values (P<0.05), showing that osmoregulatory ... Article in Journal/Newspaper Beluga Beluga* IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
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Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
topic |
Biology Fisheries Huso huso haematological parameters Ion Cortisol Osmolarity Caspian Sea Iran |
spellingShingle |
Biology Fisheries Huso huso haematological parameters Ion Cortisol Osmolarity Caspian Sea Iran Farabi, S.M.V. Hajimoradloo, A. Bahmani, M. Study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, Huso huso (Linnaeus, 1758) in the south Caspian Sea: Effect of age and size |
topic_facet |
Biology Fisheries Huso huso haematological parameters Ion Cortisol Osmolarity Caspian Sea Iran |
description |
The salinity tolerance and hydromineral regulation capabilities of juvenile great sturgeon, Huso huso, of different age and size groups (I: 35 days, BW: 0.60±0.02g & TL; 4.80±0.13cm; II: 35 days, BW: 2.23±0.20g & TL: 7.19±0.17cm; III: 35 days, BW: 9.91±0.23g & TL: 11.86±0.24cm; IV: 50 days, BW: 3.97±0.25 g & TL: 9.34±0.18cm; V:50 days, BW:22.27±1.9g & TL: 17.25±0.35cm; VI: 65 days, BW: 6.3±0.67g & TL: 11.1±37cm n=90 for each group) in freshwater (FW:0.5 ppt), estuary water (EW:9.5 ppt) and the Caspian Sea water (CsW:12.5 ppt) were investigated. The fishes are directly transferred from FW to EW and CsW. The possible repercussions of osmoregulatory processes on some indicators of classical were examined at the end of 168 hours fish acclimation. Mortality was observed (higher than 50% after 72 hours) only in 1st group in EW and CsW. Some haematological parameters, namely haematocrit (Hct), red and white blood cells count (RBC, WBC), mean cell volume (MCV), hemoglobin concentration (Hb), mean cell hemoglobin concentration (MCHC), the amount of haemoglobin per erythrocyte (MCH), levels of cortisol, osmolarity and ion concentration (Na+, K+, Ca+2 and Mg+2) in the plasma were determined. The functional levels of the mechanism of osmotic and ionic homeostasis were similar in different groups (II to VI) but differed in experimental media (p<0.05). Significant differences were observed between the levels of serum Na+ concentration in different groups in EW and CsW media (p<0.05). Serum Na+ and Ca+2 concentrations were higher than those of FW and EW media, but lower than in CsW media. The Hct, MCV and MCH decreased with increase in fish age, and decreased from FW media to CsW media with increasing salinity; RBC, WBC and MCHC did not change. The trend of increasing levels of cortisol were observed at higher salinity in each group (P<0.05). However, Hct, MCV, MCHC, cortisol, osmolarity and ion concentration values did not return to initial values (P<0.05), showing that osmoregulatory ... |
format |
Article in Journal/Newspaper |
author |
Farabi, S.M.V. Hajimoradloo, A. Bahmani, M. |
author_facet |
Farabi, S.M.V. Hajimoradloo, A. Bahmani, M. |
author_sort |
Farabi, S.M.V. |
title |
Study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, Huso huso (Linnaeus, 1758) in the south Caspian Sea: Effect of age and size |
title_short |
Study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, Huso huso (Linnaeus, 1758) in the south Caspian Sea: Effect of age and size |
title_full |
Study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, Huso huso (Linnaeus, 1758) in the south Caspian Sea: Effect of age and size |
title_fullStr |
Study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, Huso huso (Linnaeus, 1758) in the south Caspian Sea: Effect of age and size |
title_full_unstemmed |
Study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, Huso huso (Linnaeus, 1758) in the south Caspian Sea: Effect of age and size |
title_sort |
study on salinity tolerance and some physiological indicators of ion-osmoregulatory system in juvenile beluga, huso huso (linnaeus, 1758) in the south caspian sea: effect of age and size |
publishDate |
2007 |
url |
http://hdl.handle.net/1834/37080 |
genre |
Beluga Beluga* |
genre_facet |
Beluga Beluga* |
op_source |
http://aquaticcommons.org/id/eprint/22294 18721 2018-03-13 20:27:17 22294 Iranian Fisheries Science Research Institute |
op_relation |
http://www.ifro.ir 1562-2916 http://hdl.handle.net/1834/37080 |
_version_ |
1766374826346283008 |