Effects of waterborne selenium on toxic and physiological stress response in goldfish, Carassius auratus

Optimum selenium levels in diets high in plant‐based feedstuffs for gilthead sea bream (Sparus aurata) fingerlings

“…Elevation of selenium up to 1.70 mg Se/kg significantly up-regulated hepatic expression of cat denoting an increased oxidative stress associated with growth reduction in this fish. These results are in agreement with the increased cat activity associated with high Se levels in common carp (fed Se nanoparticles or a commercial diet, Ashouri et al, 2015;Elia et al, 2011), meagre (fed selenium yeast, Mansour et al, 2017), goldfish (Carasius orates exposed to Se, Choi et al, 2015) and in vitro rainbow trout hepatocytes (Misra et al, 2012). Indeed, oxidative stress is one of the main causes of TA B L E 3 Survival (%), standard length (cm), body weight (g), weight gain, SGR (%) and TGC (‰) along the trial of gilthead sea bream fed increasing dietary Se levels for 42 days (means ± SD, n = 3) Se toxicity (Hauser-Davis et al, 2016) and has been related to its capacity to oxidize thiols in protein formation or create Se metabolites that originate reactive oxygen species (Berntssen et al, 2017).…”

“…The inhibition of gr binding activity may produce an increase in mRNA expression in an attempt to counteract this inhibition. However, this effect seems to be dose‐dependent in vivo, as gr mRNA expression is increased with increasing selenium (3–4 mg/L Se) exposure in goldfish, whereas no effect was observed in lower levels (Choi et al, ). Furthermore, excess Se induces stress hormones in goldfish (Choi et al, ) and rainbow trout (Wiseman et al, ) or gilthead sea bream juveniles submitted to acute stress (Mechlaoui et al, ).…”

“…Furthermore, under stressful conditions, Se requirements are increased, whereas under normal conditions these levels would be considered toxic (Khan, Zuberi, Fernandes, Ullah, & Sarwar, 2017). Se toxicity curses with reduced growth and feed efficiency, increased oxidative stress mortality, increased skeletal anomalies, oedema, decreased egg viability, altered immunological functions, necrosis of renal tubules and renal calcinosis, while deficiencies can produce reduced growth, mortality, lethargy, diminished appetite, muscle dystrophy, reduced vitamin E levels and low haematocrit (Bell, Cowey, Adron, & Pirie, 1987;Berntssen et al, 2018;Betancor et al, 2012;Choi et al, 2015;Gatlin & Wilson, 1984;Lin & Shiau, 2005;Pacitti et al, 2015;Saleh et al, 2014;Schultz & Hermanutz, 1990;Tashjian, Teh, Sogomonyan, & Hung, 2006;Watanabe et al, 1997;Zee, Patterson, Gagnon, & Hecker, 2016).…”

Effects of Various Light Spectra on Physiological Stress and DNA Damage by Thermal Stress in Juvenile Rock Bream (Oplegnathus fasciatus)

“…In addition, stress caused by the external environment may cause liver damage (Cheng et al 2005;Choi et al 2015). Aspartate aminotransferase (AspAT) and alanine aminotransferase (AlaAT) are well known indicators of liver damage (Nemcsók and Benedeczky 1990).…”

“…Many previous studies have shown that specific LED wavelengths play a role in regulating/maintaining physiological responses such as homeostasis, immune, maturation, and growth in the body (Karakatsouli et al 2008;Kim et al 2016). LEDs have been shown to be effective for influencing fish culture (Villamizar et al 2009;Choi et al 2015).…”