Hematology of great sturgeon (Huso huso Linnaeus, 1758) juvenile exposed to brackish water environment

Zarejabad, Asad Mohammadi; Jalali, Mohammad Ali; Sudagar, Mohammad; Pouralimotlagh, Somayeh

doi:10.1007/s10695-009-9339-1

Cited by 30 publications

(32 citation statements)

References 20 publications

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“…to those previously reported for green sturgeon (Allen and Cech 2007;Kültz 2009, 2014;Allen et al 2011) and for other sturgeon species (McEnroe and Cech 1985;Cataldi et al 1995;Altinok et al 1998;Martinez-Alvarez et al 2002;Jarvis and Ballantyne 2003;Semenova and Vyushina 2006;Zarejabad et al 2008;Ziegeweid and Black 2008;Mojazi Amiri et al 2009). Although the present salinity exposure lasted for only 5 d and did not simulate the physiological consequences of long-term hyperosmotic exposure, these data underscore the high osmoregulatory capacity of green sturgeon at an early age.…”

Section: Effects Of Salinity Exposure On Osmoregulationsupporting

confidence: 80%

Effect of Nutritional Status on the Osmoregulation of Green Sturgeon (Acipenser medirostris)

Haller

Hung²,

Lee³

et al. 2015

Physiological and Biochemical Zoology

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Anthropogenic climate change is linked to food web and salinity fluctuations in estuarine environments. Both decreased nutritional status and environmental salinity influence the physiological tolerance and health of fish populations; however, limited information on the interaction of these two factors and their physiological consequences is available. The green sturgeon (Acipenser medirostris) is a species of special concern in California, and the southern distinct population segment is listed as threatened. To test the hypothesis that poor nutrition negatively affects osmoregulation, juvenile green sturgeon (222 d posthatch) were randomly assigned to four feed restriction groups (12.5%, 25%, 50%, and 100% of the optimal feeding rate for 4 wk). Fish were then acutely exposed to 0-, 8-, 16-, or 32-ppt salinities and sampled at three time points (12, 72, or 120 h). Feed restriction significantly (P < 0.05) decreased specific growth rate, feed efficiency, condition factor, whole-body lipids, and protein content as well as plasma glucose, triglycerides, and proteins. Furthermore, feed restriction, salinity concentration, and salinity exposure time had significant effects on hematological indexes (hematocrit, hemoglobin), plasma values (osmolality, Na(+), K(+), Cl(-), glucose, lactate, cortisol), enzymatic activity (gill and pyloric ceca Na(+)/K(+) ATPase), and morphology of gill mitochondria-rich cells. The largest disturbances were observed at the highest salinity treatments across all feeding regimes. In addition, the interaction between feed restriction and acute salinity exposure at the highest salinity treatment resulted in high mortality rates during the first 72 h of salinity exposure. Evaluating the interactions of these environmental stressors and their implications on green sturgeon physiological tolerance will inform restoration and management efforts in rapidly changing estuarine environments.

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Section: Effects Of Salinity Exposure On Osmoregulationsupporting

confidence: 80%

Effect of Nutritional Status on the Osmoregulation of Green Sturgeon (Acipenser medirostris)

Haller

Hung²,

Lee³

et al. 2015

Physiological and Biochemical Zoology

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“…Changes in hematologic and plasma biochemistry variables can be an important indicator of changes in health status, but are not commonly used in fish because species‐specific reference intervals (RI) may not be available. Also, a wide variety of biologic and environmental factors can affect RI including temperature, age, and culture conditions …”

Section: Introductionmentioning

confidence: 99%

Determination of hematology and plasma chemistry reference intervals for 3 populations of captive Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus)

Matsche¹,

Arnold

Jenkins

et al. 2014

Veterinary Clinical Pathol

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Background The imperiled status of Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus), a large, long‐lived, anadromous fish found along the Atlantic coast of North America, has prompted efforts at captive propagation for research and stock enhancement. Objective The purpose of this study was to establish hematology and plasma chemistry reference intervals of captive Atlantic sturgeon maintained under different culture conditions. Methods Blood specimens were collected from a total of 119 fish at 3 hatcheries: Lamar, PA (n = 36, ages 10–14 years); Chalk Point, MD (n = 40, siblings of Lamar); and Horn Point, Cambridge, MD (n = 43, mixed population from Chesapeake Bay). Reference intervals (using robust techniques), median, mean, and standard deviations were determined for WBC, RBC, thrombocytes, PCV, HGB, MCV, MCH, MCHC, and absolute counts for lymphocytes (L), neutrophils (N), monocytes, and eosinophils. Chemistry analytes included concentrations of total proteins, albumin, glucose, urea, calcium, phosphate, sodium, potassium, chloride, and globulins, AST, CK, and LDH activities, and osmolality. Results Mean concentrations of total proteins, albumin, and glucose were at or below the analytic range. Statistical comparisons showed significant differences among hatcheries for each remaining plasma chemistry analyte and for PCV, RBC, MCHC, MCH, eosinophil and monocyte counts, and N:L ratio throughout all 3 groups. Therefore, reference intervals were calculated separately for each population. Conclusions Reference intervals for fish maintained under differing conditions should be established per population.

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“…This lack of change is interesting, given the significant increase in plasma osmolytes and could suggest that the blood volume ratios are being conserved. Some studies on other acipenserids have reported decreases in haematocrit following long‐term salinity exposure (Zarejabad et al , ), yet others have found no changes (Altinok et al , ; Martinez‐Alvarez et al , ; Rodriguez et al , ; Allen & Cech, ) and still others have reported increases (Jarvis & Ballantyne, ). One short‐term study reported decrease in haematocrit in young of the year A. brevirostrum following 48 h in salinities of 24 (Ziegeweid & Black, ).…”

Section: Discussionmentioning

confidence: 99%

Oxygen consumption and haematology of juvenile shortnose sturgeon Acipenser brevirostrum during an acute 24 h saltwater challenge

Penny

Kieffer

2014

Journal of Fish Biology

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This study focused on the acute physiological responses to saltwater exposure in juvenile shortnose sturgeon Acipenser brevirostrum. In two separate laboratory experiments, 2 year-old A. brevirostrum were exposed to either full (32) or half-strength (16) seawater for up to 24 h. First, oxygen consumption rates were used to estimate the metabolic costs over 24 h. Secondly, blood and muscle samples were analysed at 6, 12 and 24 h for water loss, various measures of osmoregulatory status (plasma osmolality and ions) and other standard haematological variables. Juveniles exposed to full-strength seawater showed significant decreases in oxygen consumption rates during the 24 h exposure. Furthermore, seawater-exposed fish had significantly increased plasma osmolality, ions (Na(+) and Cl(-)) and a 17% decrease in total wet mass over the 24 h exposure period. To a lesser extent, increases in osmolality, ions and mass loss were observed in fish exposed to half-strength seawater but no changes to oxygen consumption. Cortisol was also significantly increased in fish exposed to full-strength seawater. While plasma protein was elevated following 24 h in full-strength seawater, haemoglobin, haematocrit and plasma glucose levels did not change with increased salinity. These results imply an inability of juvenile A. brevirostrum to regulate water and ions in full-strength seawater within 24 h. Nonetheless, no mortality occurred in any exposure, suggesting that juvenile A. brevirostrum can tolerate short periods in saline environments.

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Hematology of great sturgeon (Huso huso Linnaeus, 1758) juvenile exposed to brackish water environment

Cited by 30 publications

References 20 publications

Effect of Nutritional Status on the Osmoregulation of Green Sturgeon (Acipenser medirostris)

Effect of Nutritional Status on the Osmoregulation of Green Sturgeon (Acipenser medirostris)

Determination of hematology and plasma chemistry reference intervals for 3 populations of captive Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus)

Oxygen consumption and haematology of juvenile shortnose sturgeon Acipenser brevirostrum during an acute 24 h saltwater challenge

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