The significance of cortisol on acclimation to salinity in pejerrey Odontesthes bonariensis

Tsuzuki, Mônica Yumi; Ogawa, Katsuhito; Strüssmann, Carlos Augusto; Maita, Masashi; Takashima, Fumio; Melo, Cláudio

doi:10.1590/s0102-09352007000500030

Cited by 12 publications

(13 citation statements)

References 25 publications

(39 reference statements)

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“…Similar to the present findings, significant rise in blood cortisol was also documented in the goldfish Carassius auratus exposed to increasing levels of salinity (Al-Khashali and Al-Shawi, 2013). Also, in pejerrey Odontesthes bonariensis it was shown that cortisol in blood rises in response to hyperosmotic salinity exposure magnitude and period (Tsuzuki et al, 2007). In the present study, the increased level of cortisol in treatment exposed to higher salinity is in agreement with the findings of several authors (Kammerer et al, 2010;Lim et al, 2005;Al-Khashali and Al-Shawi, 2013;Mancera et al, 1993) showing that the rise of cortisol level is a part of the overall physiological adaptation of fish exposed to saltwater.…”

Section: Discussionsupporting

confidence: 93%

Stress Response and Amino Enzymes Catabolism of Nile Tilapia Oreochromis niloticus Exposed to Hyperosmotic Culture Conditions

Upling¹,

Traifalgar²

2015

Asian J. of Animal Sciences

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In archipelagic countries, aquaculture of tilapia is commonly affected by variable and fluctuating salinities associated with tidal flow, salt water intrusions, rainfall and season which can cause stress to the species and affects the overall production. In the present study, the effect of salinity exposure on stress response and amino catabolic enzymes of Nile tilapia Oreochromis niloticus was investigated. Seventy two Nile tilapia Oreochromis niloticus (size: 44.57±0.48 g) were distributed to 6 units of 60 L plastic tanks to constitute the two salinity exposure treatments run in triplicates. The experimental fish were exposed to two salinities at 15 and 30 ppt for a period of 7 days. Results indicated that after 24 h exposure stressors plasma cortisol and blood glucose were found to be significantly elevated (p<0.01) at 30 ppt as compared to those exposed at 15 ppt. This elevated cortisol and glucose levels persist at the higher treatment until the 7th day of exposure. Enzymes involved in the amino acid catabolism for energy production were found elevated in response to salinity stress. Serum ALT and AST were significantly higher (p<0.01) at 30 ppt as compared to the control. Survival was negatively affected by higher salinity level (p<0.01). This study demonstrates that exposure to higher salinity could result in elevated stress responses and amino enzymes catabolism of Nile tilapia. The present results add to the understanding of the physiological responses of tilapia on salinity stress and would be helpful in formulating strategies to optimize the aquaculture of this species in environments with fluctuating patterns of salinity.

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Section: Discussionsupporting

confidence: 93%

Stress Response and Amino Enzymes Catabolism of Nile Tilapia Oreochromis niloticus Exposed to Hyperosmotic Culture Conditions

Upling¹,

Traifalgar²

2015

Asian J. of Animal Sciences

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“…-ATPase activity in coho salmon, O. kisutch (McCormick and Bern 1989), sea trout, S. trutta L. (Madsen 1990a) and rainbow trout, O. mykiss (Madsen 1990b). However, Tsuzuki et al (2007) reported no benefit of single injection of cortisol in salt water tolerance in pejerrey, Odontesthes bonariensis. Abohegab and Hanke (1984) also reported single cortisol injection to carp, 3 h before salt water transfer, led to increase in cortisol, glucose and Na ?…”

Section: Discussionmentioning

confidence: 99%

Effect of dietary l-tryptophan on osmotic stress tolerance in common carp, Cyprinus carpio, juveniles

Hoseini

Hosseini

2010

Fish Physiol Biochem

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Common carp juveniles were fed two types of diet (control: 0.1% tryptophan and TRP: 0.6% tryptophan) over 15 days. Thereafter, both groups were directly subjected to osmotic challenge (from 0 to 10 ppt) for 168 h. Blood samples were collected at -240, 0, 6, 24, 72 and 168 h after challenge. Survival and serum cortisol, glucose, sodium and chloride levels were measured to determine stress response and osmoregulation condition. While TRP group showed no mortality until 168 h, cumulative mortality was near 100% at 72 h after challenge in control group. Feeding tryptophan-supplemented diet led to increase in prechallenge cortisol, but not glucose, sodium and chloride values at -240 h that stayed elevated until 0 h after challenge. After challenge, cortisol and glucose values did not significantly affected by time of sampling but type of diet and diet×time interaction. Sodium values significantly affected by diet type and time of sampling but not their interaction. Chloride values significantly affected by time of sampling but not diet type and their interaction. Control group had higher cortisol, glucose and sodium than TRP at each time of sampling. Control and TRP group showed increasing and decreasing pattern in cortisol and glucose values when experiment progressed after osmotic challenge. Both group showed increasing pattern in sodium and chloride values when experiment progressed after osmotic challenge. Results indicated that tryptophan supplementation enhanced salt water tolerance of carp that is due to increase in basal cortisol and anti-stress effect of tryptophan and possibly increase in serotonergic activity.

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“…This notion was only corrected when workers at Fisheries Experimental Stations in Japan, after much struggling to keep, transport and stock pejerrey in freshwater, realized the benefits of adding 3–5 psu (practical salinity units) of salt (NaCl) to the holding water. These empirical observations led to the studies of Tsuzuki et al (Tsuzuki, Aikawa, Strüssmann & Takashima 2000a, b; Tsuzuki, Ogawa, Strüssmann, Maita & Takashima 2000, 2007; Tsuzuki, Strüssmann & Takashima 2007), who demonstrated not only better survival and growth performance in brackish water but also the positive effects of salinity on ionic and osmoregulatory balance and mitigation of stress response (e.g. lowering of blood plasma cortisol level).…”

Section: Constraints To the Development Of Pejerrey Farming In South mentioning

confidence: 99%

Historical aspects, current status and prospects of pejerrey aquaculture in South America

et al. 2008

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The pejerrey Odontesthes bonariensis (Valenciennes, 1835) is an inland water ¢sh from the Pampas region comprising part of Argentina, Uruguay and the South of Brazil. Pejerrey is a very popular ¢sh in this region and has a long history of domestic and international introductions, which attests to the high quality and market value of its £esh, as well as its attractiveness as a game ¢sh. The desirable characteristics of pejerrey also make it a good candidate for aquaculture, and the ¢rst trials on pejerrey cultivation (atheriniculture) were started more than a century ago in Argentina. In spite of the considerable interest in its development, little progress has been made and atheriniculture is still restricted to propagation and stocking for sport ¢shing purposes. In this review, we summarize the history of atheriniculture and the biological, technological, scienti¢c, cultural and infrastructural constraints to pejerrey aquaculture development thus far. We also suggest possible scenarios of pejerrey aquaculture development compatible with the socio^economic conditions of South American countries. Our projections also take into consideration recent scienti¢c ¢ndings on the biology of pejerrey and technological advances in seafood processing, storage and transportation, as well as the latest trends of seafood consumption and international markets. The best production strategy remains to be determined by trial and error but it is likely that, initially, production should focus on a di¡erentiated, high-quality ¢sh for the premium or international markets rather than attempting to compete with the cheap ¢sh from natural sources. An international cooperation project with Japan has successfully demonstrated the feasibility of breeding pejerrey in captivity and mass producing seeds e⁄ciently in Argentina, and has provided the foundation for the development of intensive and extensive farming of this species.

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The significance of cortisol on acclimation to salinity in pejerrey Odontesthes bonariensis

Cited by 12 publications

References 25 publications

Stress Response and Amino Enzymes Catabolism of Nile Tilapia Oreochromis niloticus Exposed to Hyperosmotic Culture Conditions

Stress Response and Amino Enzymes Catabolism of Nile Tilapia Oreochromis niloticus Exposed to Hyperosmotic Culture Conditions

Effect of dietary l-tryptophan on osmotic stress tolerance in common carp, Cyprinus carpio, juveniles

Historical aspects, current status and prospects of pejerrey aquaculture in South America

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