Covert Mortality Nodavirus (CMNV)

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Covert Mortality Vodavirus (CMNV)

A new nodavirus, named Covert Mortality Nodavirus (CMNV), is associated with covert mortality disease of shrimp which has caused serious loss in China since 2009. The name ‘covert mortality disease’ (or ‘bottom death’) was broadly used in China before 2009 to describe the disease in which mortality was hidden under deep water in shrimp farms.

Clinical signs of infected shrimp

  • hepatopancreatic atrophy with colour fading
  • empty stomach and guts,
  • soft shell
  • slow growth
  • slightly whitish muscle lesion areas in the abdominal segments or slightly pale body

Mortality rate
The disease causes economic losses in hatcheries and farms due to high mortality rates of up to 80% commonly found within 60–80 days post-stocking.

Mode of transmission
Transmit vertically via sperm and oocytes in the main species of cultured shrimp and prawns.

Infected shrimp types
hepatopancrease, abdominal muscle of Litopenaeus vannamei

Ordering Information

PCR Kits More Info
PCMN01-050 ShrimpCheck Covert Mortality Nodavirus (CMNV) One Step RT-PCR Kit 50 tests/ kit View More >
PCMN01-100 ShrimpCheck Covert Mortality Nodavirus (CMNV) One Step RT-PCR Kit 100 tests/ kit View More >
CPCMN01-050 ShrimpCheck Covert Mortality Nodavirus (CMNV) One Step RT-PCR Kit with Nucleic Acid Extraction Kit 50 tests/ kit View More >
CPCMN01-100 ShrimpCheck Covert Mortality Nodavirus (CMNV) One Step RT-PCR Kit with Nucleic Acid Extraction Kit 100 tests/ kit View More >
Real-time PCR Kits More Info
QCMN01-050 ShrimpCheck Covert Mortality Nodavirus (CMNV) One Step Real-time RT-PCR Kit 50 tests/ kit View More >
QCMN01-100 ShrimpCheck Covert Mortality Nodavirus (CMNV) One Step Real-time RT-PCR Kit 100 tests/ kit View More >
CQCMN01-050 ShrimpCheck Covert Mortality Nodavirus (CMNV) One Step Real-time RT-PCR Kit with Nucleic Acid Extraction Kit 50 tests/ kit View More >
CQCMN01-100 ShrimpCheck Covert Mortality Nodavirus (CMNV) One Step Real-time RT-PCR Kit with Nucleic Acid Extraction Kit 100 tests/ kit View More >