Haemolymph parameters of Pacific white shrimp (Litopenaeus vannamei) infected with Taura syndrome virus

Performance and immunological resistance of Litopenaeus vannamei fed a β-1,3/1,6-glucan-supplemented diet after per os challenge with the Infectious myonecrosis virus (IMNV)

“…The same response pattern was observed in L. vannamei juveniles, 14 days after eyestalk ablation, although the THC increase was not significant (Maggioni et al, 2004). Song et al (2003) reported that L. vannamei infected by the Taura virus produced a THC 79% lower than non-infected shrimp. As a general rule, the THC falls when crustaceans suffer stress, as when facing viral infection (Hennig et al, 1998;Lorenzo et al, 1999;Cheng and Chen, 2001).…”

Susceptibility of juvenile Macrobrachium rosenbergii to different doses of high and low virulence strains of white spot syndrome virus (WSSV)

“…There is evidence to suggest some role for proPO in defending non-crustacean invertebrates against viruses (Shelby & Popham 2006). However, the increases in proPO levels in hemolymph and melanized lesions of shrimp infected with Taura syndrome virus (Hasson et al 1999, Song et al 2003 do not occur in M. rosenbergii infected with WSSV. No hemocytic infiltrations, encapsulations or ectopic spheroids typical of bacterial or viral infections in penaeid shrimp occur in WSSV-infected M. rosenbergii (Sarathi et al 2007), so direct hemocytemediated intervention appears unlikely.…”

Purification and characterization of phenoloxidase from <italic>Octopus ocellatus</italic>

“…In Taura syndrome virus-infected shrimps, PO binds to infected cells via a probable thiol ester-like motif, leading to production of toxic intermediates of phenol, which might help to prevent viruses from gaining entry into the body cavity [9]. The vital cascade reaction known as 'proPO activating system' is a melanogenic pathway involved in immune reactions of invertebrate hemocytes [1,5].…”