Ionic and osmotic regulation capabilities of juvenile Gulf of Mexico sturgeon, Acipenser oxyrinchus de sotoi

Altınok, İlhan; Galli, Sara M.; Chapman, Frank A.

doi:10.1016/s1095-6433(98)10073-9

Cited by 93 publications

(81 citation statements)

References 23 publications

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“…The present study shows an increase of serum osmolarity and ion concentrations (Na + , Cl -and Ca 2+ ) immediately after the transference of juvenile Chinese sturgeon from FW to BW. At 24 h after transition to BW of 10%, serum osmolarity and ion concentrations (Na + , Cl -and Ca 2+ ) had begun to decrease, and reached a new steady state after 216 h. These results are consistent with other studies in several sturgeon species (A. oxyrinchus, Altinok et al 1998;A. gu¨eldensta¨edti, Natochin et al 1985;A.…”

Section: Discussionsupporting

confidence: 90%

“…The subsequent 24-216 h marks the beginning of the stabilization period, when the serum osmolarity and ion concentrations (Na + , Cland Ca 2+ ) start to decrease. Altinok et al (1998) also reported a strong increase of the osmolarity and ion concentrations after the transference to BW in A. oxyrinchus, peaking at 24 h, followed by a decline to basal level.…”

Section: Discussionmentioning

confidence: 77%

“…Immediately post-transfer to BW, the critical problem faced by sturgeon is dehydration, caused by osmotic removal of water in the gills McKenzie et al 1999;Martínez-Á lvarez et al 2002). This crisis period occurs in Gulf of Mexico sturgeon (A. oxyrinchus) at 24 h after transition to BW (Altinok et al 1998). The subsequent 24-216 h marks the beginning of the stabilization period, when the serum osmolarity and ion concentrations (Na + , Cland Ca 2+ ) start to decrease.…”

Section: Discussionmentioning

confidence: 99%

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Osmoregulation in juvenile Chinese sturgeon (Acipenser sinensis Gray) during brackish water adaptation

Zhuang

Zhang

et al. 2008

Fish Physiol Biochem

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The osmoregulation capabilities of 7-month-old juvenile Chinese sturgeon (Acipenser sinensis Gray) (128.8 +/- 15 g) transferred directly from fresh water (0 per thousand, 46 mOsmol kg(-1)) to brackish water (10 per thousand, 273 mOsmol kg(-1)) were studied over a 20-day period. Changes in serum osmolarity, chloride (Cl(-)), sodium (Na+), potassium (K+) and calcium (Ca2+) ion concentrations, as well as gill and spiral valve Na+,K+-ATPase activities were measured at 3, 12, 24, 72, 216 and 480 h after transfer to BW. The serum osmolarity and ion concentrations (Na+, Cl(-) and Ca2+) increased immediately after the transference to BW, reaching maximum at 24 h and returned to a new steady state at 216 h, while the FW control group maintained basal levels which showed lower (P < 0.05) than the BW group. Gill Na+,K+-ATPase activity of BW group exhibited an abrupt decrease in the first 3 h after transfer, but began to increase at 3 h, reaching a peak value at 24 h, and returned to a new steady state at 216 h. The differences between gill Na+,K+-ATPase activity of BW and FW fish were significant (P < 0.05) after 12 h. In contrast, Na+,K+-ATPase activity of the spiral valve showed transient increase after transference from FW to BW, and then decreased rapidly at 3 h, reaching the lowest at 24 h after transference. At 216 h after exposure to BW, Na+,K+-ATPase activities of the spiral valve increased slowly to the levels of FW control. The results of our study indicate the existence of hyposmoregulatory adaptive mechanisms in 7-month-old juvenile Chinese sturgeon which enable this fish to acclimate itself successfully to brackish water.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 99%

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Osmoregulation in juvenile Chinese sturgeon (Acipenser sinensis Gray) during brackish water adaptation

Zhuang

Zhang

et al. 2008

Fish Physiol Biochem

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“…Development of salinity tolerance has not been studied in YOY European sturgeons. Nevertheless, all anadromous sturgeon species must develop such tolerance (Altinok et al 1998, Bain et al 2000, Kynard & Horgan 2002, Allen et al 2011, which is age-dependent (Magnin 1962, Altinok et al 1998) and as far as it is known, occurs between 9 and 12 mo old at the earliest (Kynard et al 2005). Hatin et al (2007) pointed out that habitat use in Atlantic sturgeon juveniles is controlled by salinity and distance to the salt wedge where YOY use freshwater zones only.…”

Section: Movement Orientation and Early Migration Tacticsmentioning

confidence: 99%

Effects of rearing practice on post-release young-of-the-year behavior: Acipenser sturio early life in freshwater

Carrera-García¹,

Rochard²,

Acolas³

2017

Endang. Species. Res.

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Stocking is becoming an increasingly important conservation tool as biodiversity trends continue to decline. The European sturgeon Acipenser sturio is a Critically Endangered species subject to a stocking program in which a better understanding of its life history and stocking achievement is crucial for its conservation. In this study, acoustic telemetry assessment of postrelease behavior of 3 mo old fish was carried out for the first time on a sturgeon species. We aimed to improve the knowledge of movement, distribution and survival of the species' freshwater early juveniles within the context of stocking practices. Fish belonging to 2 half-sib families were reared in enriched and traditional hatchery conditions, tagged and monitored for 21 d in the Dordogne River, France. Fish overall survival proxy was 69.3% (52.2 to 90.9%); the lowest survival was found for 1 family reared traditionally. After release, most movements (85.7%) occurred during the first 3 d after stocking and were oriented in a downstream direction. Over the course of the study, 82% of fish were detected within 13.5 km of the release site. No differences in total distance covered (7.5 ± 7.0 km) were found between treatments. Three enriched-reared fish reached the tidal area (26 to 32 km from the release site) but none reached the saline zone of the estuary. Fish were mainly active at night, but traditionally-reared fish were significantly more active during the day than enriched-reared fish during the first 3 d. The study provides the first insights into early life in freshwater for this species; this knowledge will help improve stocking practices.

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“…Analysis of plasma ion levels in neotropical teleosts has generally been performed in the laboratory on specimens acclimated to either freshwater (Baldisserotto & Mimura, 1997;Borges et al, 2004;Becker et al, 2009) or seawater (Altinok et al, 1998;Prodócimo & Freire, 2001;Sampaio & Bianchini, 2002). The ionic regulation of two species of pufferfish (Sphoeroides testudineus and S. greeleyi) (Prodócimo & Freire, 2001) and a flounder (Paralichthys orbignyanus) (Sampaio & Bianchini, 2002) was also studied when fish were subjected to salinity changes in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

Plasma ion levels of freshwater and marine/estuarine teleosts from Southern Brazil

et al. 2011

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The purpose of this study was to investigate Na , and Mg 2+ levels in the plasma of freshwater and marine/ estuarine teleosts collected at different salinities (0 to 34) from the estuarine and freshwater portions of the São Gonçalo channel in Southern Brazil. Any relationship between plasma ion levels and salinity and the capacity of ionic regulation of teleosts found at three or more different salinities (Genidens barbus and Micropogonias furnieri) was also investigated. Results showed no relationship between plasma ion levels and salinity when considering all species together, but the two species collected from three or more different salinities showed a significant positive relationship between plasma ion levels and salinity, indicating that G. barbus and M. furnieri have a high capacity to regulate plasma ion levels at both low and high salinities.A proposta deste estudo foi investigar os níveis de Na , and Mg 2+ no plasma de teleósteos de água doce e marinhos/estuarinos coletados em diferentes salinidades (0 a 34) nas porções de água doce e estuarinas do Canal São Gonçalo, sul do Brasil. Uma possível relação entre os níveis iônicos plasmáticos e a salinidade também foi investigada bem como a capacidade de regulação iônica dos teleósteos coletados em três ou mais salinidades (Genidens barbus e Micropogonias furnieri). Os resultados mostraram que não houve relação entre os níveis iônicos no plasma com a salinidade quando considerando todas as espécies juntas, mas as duas espécies coletadas em três ou mais salinidades mostraram uma relação significativamente positiva entre níveis iônicos no plasma e salinidade, mostrando que G. barbus e M. furnieri apresentaram uma grande capacidade para regular os íons do plasma em baixas e altas salinidades.

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Ionic and osmotic regulation capabilities of juvenile Gulf of Mexico sturgeon, Acipenser oxyrinchus de sotoi

Cited by 93 publications

References 23 publications

Osmoregulation in juvenile Chinese sturgeon (Acipenser sinensis Gray) during brackish water adaptation

Osmoregulation in juvenile Chinese sturgeon (Acipenser sinensis Gray) during brackish water adaptation

Effects of rearing practice on post-release young-of-the-year behavior: Acipenser sturio early life in freshwater

Plasma ion levels of freshwater and marine/estuarine teleosts from Southern Brazil

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