The effect of temperature on juvenile Mozambique tilapia hybrids (Oreochromis mossambicus x O. urolepis hornorum) exposed to full-strength and hypersaline seawater

Sardella, Brian A.; Cooper, Jill; Gonzalez, Richard J.; Brauner, Colin J.

doi:10.1016/j.cbpb.2003.12.003

Cited by 67 publications

(42 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The changes in plasma osmolality was consistent with the findings of Sardella et al [44] who reported a slightly higher osmolality in the juvenile Mozambique tilapia exposed to 25 and 35 ºC compared with those exposed to 15 ºC.…”

Section: Discussionsupporting

confidence: 91%

Untitled

2017

JESR

View full text Add to dashboard Cite

Exposure to any type of stressors either environmental, chemical or perceived stressors, results in a series of physiological responses in animals. The purpose of this study was to investigate the effects of thermal stress on physiological responses in red hybrid tilapia. Adult red hybrid tilapia were previously exposed to gradual increment of water temperature in thermoregulated recirculating tanks at a rate of 1 o C/8 h from 28 to 31 o C and kept for 1, 7 and 14 days. Cortisol, HMG-CoA reductase, total protein and osmolality were determined. Plasma cortisol and HMG-CoA levels were significantly increased in the heat-stressed groups compared to nonstressed groups. Osmolality was also significantly higher (p<0.05) at day 14 in heat-stressed groups compared to non-stressed groups. Our study demonstrated that exposure to elevated water temperature affect physiological parameters in red hybrid tilapia, thus suggesting a potential threat to its biological performance.

show abstract

Section: Discussionsupporting

confidence: 91%

Untitled

2017

JESR

View full text Add to dashboard Cite

show abstract

“…Their ability to thrive in diVerent environments also makes them a robust aquaculture species (Sardella et al 2004a). Although tilapia are freshwater (FW) Wsh, they can be cultured eYciently in seawater (SW) and hypersaline water, which is greatly advantageous in light of the global shortage of FW that represents one of the most severe global challenges of our time (Beuhler 2003).…”

Section: Introductionmentioning

confidence: 99%

Prolonged apoptosis in mitochondria-rich cells of tilapia (Oreochromis mossambicus) exposed to elevated salinity

Kammerer

Kültz

2009

J Comp Physiol B

View full text Add to dashboard Cite

The time-course of programmed cell death (apoptosis) during reorganization of gill epithelium in salinity-stressed tilapia was analyzed using a recently developed method based on laser scanning cytometry (LSC) of dissociated gill cells. Apoptosis in mitochondriarich cells (MRC) was distinguished from that in other cell types using Na + /K + ATPase (NKA) as a cell-speciWc marker. Caspase 3/7 activity in MRC, assessed using LSC and microplate assays, increased signiWcantly starting at 6 h of salinity stress and remained elevated for at least 5 days. This time-course of apoptosis in MRC during acute salinity stress was reXected in elevated apoptotic DNA fragmentation. In parallel to induction of apoptosis, MRC showed a pronounced shift to G2 phase of the cell cycle, which is indicative of G2/M cell cycle arrest, and an increase in NKA abundance per MRC. Unlike in MRC, apoptosis was not signiWcantly increased in other gill cell types, although there was a small transient increase in DNA fragmentation at 6 h. G2 arrest was also observed. Overall, we interpret our data as evidence for a signiWcant role of apoptosis in the extensive reorganization of MRC populations that takes place during salinity acclimation, perhaps similar to its well-established role during organismal development.

show abstract

“…For marine ectothermic organisms, ambient temperature is one of the most significant factors that affects diverse regulation (Hochachka and Somero 2002;Hofmann et al 2002;Crockett and Londraville 2006;Donaldson et al 2008;Somero 2010). In fish physiological responses, the mechanisms associated with stress and osmoregulatory responses are susceptible to variation of environmental temperature (Hofmann and Somero 1995;Iwama et al 1999;Gonzalez and McDonald 2000;Metz et al 2003;Place et al 2004;Sardella et al 2004;Fiess et al 2007;Sardella et al 2008a,b;Cui et al 2011;Deane and Woo 2011;Feidantsis et al 2012;Cui et al 2013). For ecological relevance, the experimental temperatures used in this study were based on the average (26°C) and daytime (32°C) temperatures in Nanwan Bay, southern Taiwan (Meng et al 2008;Mayfield et al 2013) because C. viridis is abundant in Nanwan Bay (Shen et al 1993).…”

Section: Discussionmentioning

confidence: 99%

“…The internal ionic and osmotic balance of fish is affected by ambient temperature (Gonzalez and McDonald 2000;Metz et al 2003;Sardella et al 2004;Fiess et al 2007;Sardella et al 2008a, b). After exposure of C. viridis to hyperthermic condition, significant increase of plasma osmolality as well as decrease of muscle water content were found (Table 1).…”

Section: Discussionmentioning

confidence: 99%

“…Environmental temperature significantly influences internal electrolyte and osmotic homeostasis in aquatic ectotherms (Christensen 1975;Amoudi et al 1996;Metz et al 2003;Sardella et al 2004Sardella et al , 2008a. It is due to active ion-transporting mechanisms that are regulated by many proteins, while the cellular proteins of stenothermal species are only marginally stable at a limited range of temperature (Hochachka and Somero 2002;Metz et al 2003;Crockett and Londraville 2006;Sardella et al 2008a).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Short-term effects of thermal stress on the responses of branchial protein quality control and osmoregulation in a reef-associated fish, Chromis viridis

et al. 2014

View full text Add to dashboard Cite

Background: Changes in ambient temperature seriously affect physiological regulation and biochemical reactions in ectotherms. However, transient elevation in oceanic temperature occurs naturally during the day. Short-term elevation in the ambient temperature affects different physiological responses in marine fish, including cellular protein stability and osmotic balance of the internal environment. Since fish gills are vital osmoregulatory organ which directly contacts external environment, activation of cytoprotective responses to maintain gill cell viability and biological function is essential for fish survival under challenging environmental conditions. The purpose of this study was to investigate the short-term effects of elevated temperature on physiological regulation in the gills of a marine teleost, blue green damselfish (Chromis viridis). Results: As part of the stress response, plasma glucose levels were induced by short-term hyperthermic exposure (12 h). Furthermore, upregulation of the levels of gill heat shock proteins (HSPs) and ubiquitinated proteins was essential for preventing the accumulation of protein aggregations in branchial cells of C. viridis under hyperthermic stress. The specific activity of branchial Na + /K + -ATPase (NKA), however, significantly reduced while the amount of protein was similar between normal and high-temperature groups. Conclusions: The present study provided the evidence to illustrate that activation of the branchial protein quality control mechanism to carry out cytoprotective response was involved in coping with thermal stress. However, plasma osmolality and muscle water content, respectively, that slightly but evidently increased and decreased might result from impaired osmoregulatory ability due to hyperthermia-decreased gill NKA activity.

show abstract

The effect of temperature on juvenile Mozambique tilapia hybrids (Oreochromis mossambicus x O. urolepis hornorum) exposed to full-strength and hypersaline seawater

Cited by 67 publications

References 30 publications

Untitled

Untitled

Prolonged apoptosis in mitochondria-rich cells of tilapia (Oreochromis mossambicus) exposed to elevated salinity

Short-term effects of thermal stress on the responses of branchial protein quality control and osmoregulation in a reef-associated fish, Chromis viridis

Contact Info

Product

Resources

About