Abstract

Sera from the amphibian Bufo marinus (cane or marine toad) were investigated using a newly-developed enzyme-linked immunosorbent assay for the detection of antibodies to ranaviruses (Family Iridoviridae). Epizootic haematopoietic necrosis virus (EHNV) or Bohle iridovirus (BIV) was affinity purified from cell culture supernatants and simultaneously bound to the solid phase using specific linker antibodies. After binding to antigen, antibodies in Bufo marinus serum were then detected with a specific anti-immunoglobulin reagent. Of 21 Bufo marinus sera, 3 contained antibodies against EHNV, BIV or related viruses in the ranavirus group, at titres greater than 3200. Reactivity of cane toad antibodies against BIV, an amphibian virus, was greater than that against similar concentrations of EHNV, a piscine virus.

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