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Differential diagnostic table for crustaceans

Aquatic Animal Diseases Significant to Australia - Identification Field Guide 3rd edn

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Please note: one or more of the disease signs described may be present with disease. Disease, however, may still be present in the absence of the gross or clinical signs described here.

Diseases of crustaceans | Diseases of finfish | Diseases of molluscs

green dot: indicates it may be seen in all life stages may be seen in all life stages

star shape indicates seen in adults only typically seen in adults only

black square dot indicates that this is typically seen in juveniles onlytypically seen in juveniles only

 

 table header: lethargy table header: erratic swimming/jumping from water/scraping or other motor skill disfunction table header: gathering table header: swollen or colour change of internal organs (kidneys/spleen/other hepatic) table header: white spots on external surface table header:secondary bacterial-fungal-parasitic infection table header: deformities table header: external colour change table header internal colour change table header: white midgut line table header: watery/translucent flesh table header high species specificity table header: ulcerations/lesions in tissue table header: wasting table header: reduced feeding  table header: reduced growth  table header: mass mortality  table header: moderate mortality Differential alternatives
Possible disease or disease agent responsible
Viral diseases of crustaceans
Baculoviral midgut gland necrosis      black square dot indicates that this is typically seen in juveniles only  black square dot indicates that this is typically seen in juveniles only        black square dot indicates that this is typically seen in juveniles only    green dot: indicates it may be seen in all life stages              black square dot indicates that this is typically seen in juveniles only   White spot disease / Tetrahedral baculovirosis
Gill-associated virus disease green dot: indicates it may be seen in all life stages green dot: indicates it may be seen in all life stages green dot: indicates it may be seen in all life stages

 

 green dot: indicates it may be seen in all life stages green dot: indicates it may be seen in all life stages      green dot: indicates it may be seen in all life stages Nil (histology required)
Infectious hypodermal and haematopoietic necrosis green dot: indicates it may be seen in all life stages green dot: indicates it may be seen in all life stages green dot: indicates it may be seen in all life stages

 

 green dot: indicates it may be seen in all life stages  green dot: indicates it may be seen in all life stages    green dot: indicates it may be seen in all life stages White spot disease / Yellowhead disease
Infectious myonecrosis black square dot indicates that this is typically seen in juveniles only black square dot indicates that this is typically seen in juveniles only black square dot indicates that this is typically seen in juveniles only

black square dot indicates that this is typically seen in juveniles only

     White tail disease
Spherical baculovirosis—Penaeus monodon-type baculovirus black square dot indicates that this is typically seen in juveniles only

black square dot indicates that this is typically seen in juveniles only

 black square dot indicates that this is typically seen in juveniles only black square dot indicates that this is typically seen in juveniles only   black square dot indicates that this is typically seen in juveniles only   Baculoviral midgut gland necrosis / Tetrahedral baculovirosis
Taura syndrome black square dot indicates that this is typically seen in juveniles only black square dot indicates that this is typically seen in juveniles only black square dot indicates that this is typically seen in juveniles only

 

 black square dot indicates that this is typically seen in juveniles only    black square dot indicates that this is typically seen in juveniles only  black square dot indicates that this is typically seen in juveniles only Yellowhead disease
Tetrahedral baculovirosis—Baculovirus penaei green dot: indicates it may be seen in all life stages green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

  green dot: indicates it may be seen in all life stages  black square dot indicates that this is typically seen in juveniles only   Baculoviral midgut gland necrosis / Spherical baculovirosis
White spot disease green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

 green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

 green dot: indicates it may be seen in all life stages

 

       Infectious hypodermal and haematopoietic necrosis / Yellowhead disease / Taura syndrome
White tail disease black square dot indicates that this is typically seen in juveniles only black square dot indicates that this is typically seen in juveniles only black square dot indicates that this is typically seen in juveniles only black square dot indicates that this is typically seen in juveniles only    black square dot indicates that this is typically seen in juveniles only   Infectious myonecrosis
Yellowhead disease black square dot indicates that this is typically seen in juveniles only

green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

 black square dot indicates that this is typically seen in juveniles only    black square dot indicates that this is typically seen in juveniles only   Taura syndrome
Bacterial diseases of crustaceans
Necrotising hepatopancreatitis green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

 

green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

       Many (histology required)
Fungal diseases of crustaceans
Crayfish plague

green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

green dot: indicates it may be seen in all life stages

 green dot: indicates it may be seen in all life stages

 

    green dot: indicates it may be seen in all life stages   Nil (histology required)


Last reviewed: 06 Oct 2009
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