The effect of prolonged cortisol administration on the serum haemolytic activity of Atlantic salmon

Immunological assessment of hybrid striped bass at three culture temperatures

“…Recently, it was shown to decrease in Atlantic salmon (Salmo salar L.) implanted with cortisol (Carlson et al, 1993b) and in channel catfish exposed to low environmental temperatures (Hayman et al, 1992). Decreases were associated with opportunistic fungal infections in both species.…”

“…3). Woiwode & Adelman (1991) estimate that the optimal temperature for growth of hybrid bass kept under spring photoperiod was 26·8 C. The spontaneous haemolysis assay using TNP-labelled SRBC (Carlson et al, 1993b) is extremely simple to perform. This study suggests that it might also be used to investigate the optimal temperature requirements for a species.…”

“…A serum spontaneous haemolysis assay (Carlson et al, 1993b) was performed within 5 h of a sampling. Briefly, a 96-well microtitre plate was kept at 23 C, and each well was filled with 100 l of MBB.…”

Influences of Aeromonas salmonicida lipopolysaccharide, prednisolone and water temperature on plasma protein composition in salmonids

“…While stress precipitation of furunculosis might act at any phase of cellular or humoral defence, the present authors focused on examining the potential to alter plasma proteins which might contribute to innate humoral immunity. Stress such as crowding, shallow water, temperature and net‐chasing reduce haemolytic serum activity, agglutination and alternative complement pathway activity under laboratory conditions ( Angelidis, Baudin & Youinou 1987; Carlson, Cella & Bodammer 1993; Sunyer, Gomez, Navarro, Quesada & Tort 1995; Yin, Lam & Sin 1995; Tort, Sunyer, Gomez & Molinero 1996). Rainbow trout have various plasma lectins and pentraxins that bind A. salmonicida lipopolysaccharide (LPS) ( Hoover, El‐Mowafi, Simko, Kocal, Ferguson & Hayes 1998), but the influence of stress on their presence or function is not known.…”