Susceptibility of channel catfish fry to Channel Catfish Virus (CCV) challenge increases with age

Hanson, Larry A.; Rudis, Mary R.; Petrie‐Hanson, Lora

doi:10.3354/dao062027

Cited by 15 publications

(19 citation statements)

References 10 publications

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“…The antibody levels apparently increase during summer months [160], and may be boosted by periodic virus recrudescence [157]. Furthermore, early-life-stage resistance was correlated to neutralizing antibodies in the maternal parent suggesting that maternal transfer of antibodies may play a role in preventing disease outbreaks [161]. …”

Section: Ictalurid Herpesvirus 1 — a Model Clade 2 Herpesvirusmentioning

confidence: 99%

“…What prevents virus expression and disease? We have found the carrier rate within from positive spawns are 40–75% of the fish [161] and these carrier fry are susceptible to CCVD when exposed to exogenous IcHV1 [133,161]. Since the isolation of virus from adult carriers in the winter, no other research has reported successful induction of IcHV1 recrudescence.…”

Section: Ictalurid Herpesvirus 1 — a Model Clade 2 Herpesvirusmentioning

confidence: 99%

See 1 more Smart Citation

Herpesviruses that Infect Fish

Hanson

Dishon²,

Kotler³

2011

Viruses

138

128

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Herpesviruses are host specific pathogens that are widespread among vertebrates. Genome sequence data demonstrate that most herpesviruses of fish and amphibians are grouped together (family Alloherpesviridae) and are distantly related to herpesviruses of reptiles, birds and mammals (family Herpesviridae). Yet, many of the biological processes of members of the order Herpesvirales are similar. Among the conserved characteristics are the virion structure, replication process, the ability to establish long term latency and the manipulation of the host immune response. Many of the similar processes may be due to convergent evolution. This overview of identified herpesviruses of fish discusses the diseases that alloherpesviruses cause, the biology of these viruses and the host-pathogen interactions. Much of our knowledge on the biology of Alloherpesvirdae is derived from research with two species: Ictalurid herpesvirus 1 (channel catfish virus) and Cyprinid herpesvirus 3 (koi herpesvirus).

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Section: Ictalurid Herpesvirus 1 — a Model Clade 2 Herpesvirusmentioning

confidence: 99%

Section: Ictalurid Herpesvirus 1 — a Model Clade 2 Herpesvirusmentioning

confidence: 99%

Herpesviruses that Infect Fish

Hanson

Dishon²,

Kotler³

2011

Viruses

138

128

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“…These latently infected fish are anecdotally implicated in the spread of KHV to new populations. Channel catfish herpesvirus (CCV or IcHV-1) produces latent infections in channel catfish surviving acute infections (Gray et al 1999, Stingley et al 2003 and the virus may even be vertically transmitted (Hanson et al 2004).…”

Section: Herpesviral Hematopoietic Necrosis (Hvhn) Is a Disease Of Gomentioning

confidence: 99%

Detection of the herpesviral hematopoietic necrosis disease agent (Cyprinid herpesvirus 2) in moribund and healthy goldfish: validation of a quantitative PCR diagnostic method

Goodwin

Merry²,

Sadler³

2006

Dis. Aquat. Org.

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Cyprinid herpesvirus 2 (CyHV-2) is a pathogen of goldfish Carassius auratus auratus L. that causes herpesviral hematopoietic necrosis (HVHN) disease. The disease is associated with necrosis of hematopoietic tissues and anemia with high mortality. We have developed a real time 5'-nuclease PCR method (Taqman) that quantitatively detects CyHV-2 with a linear response over 8 logs of target concentration. The coefficient of variability on replicate samples tested on different days was 13% and the calculated sensitivity approached 1 target molecule per reaction. The assay does not cross-react with other similar fish herpesviruses, including CyHV-1 (carp pox) and CyHV-3 (koi herpesvirus), but reliably detects known CyHV-2 positive fish. The assay detects CyHV-2 not just in clinical cases of HVHN but also in apparently healthy 1 yr old goldfish fingerlings and even in 3 to 5 yr old broodfish.

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“…A recent study demonstrated that at early ages fish that carry vertically transmitted CCV were more resistant to challenge. However, 1 month after hatching the CCV‐negative and CCV‐positive fish had similar susceptibilities (Hanson, Rudis & Petrie‐Hanson 2004).…”

mentioning

confidence: 99%