Differential diagnostic table for molluscs

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 molluscs | Diseases of crustaceans | Diseases of finfish

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: swollen or colour change of internal organs (kidneys/spleen/other hepatic) table header: deformities table header: external colour change table header internal colour change table header: watery/translucent flesh table header high species specificity table header: tissue necrosis table header: ulceration/lesions in tissue table header: wasting table header: reduced feeding table header: reduced growth table header: mass mortality table header: moderate mortality table header: pustles gill/mantle  table header: gaping  table header: retraction of gill margins Differential alternatives
Possible disease or disease agent responsible
Viral diseases of molluscs
Abalone viral ganglioneuritis  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 Abalone viral mortality
Abalone viral mortality

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 

    Abalone viral ganglioneuritis
Akoya oyster disease star shape indicates seen in adults only

star shape indicates seen in adults only 

star shape indicates seen in adults only star shape indicates seen in adults only     Nil (histology required)
Iridovirosis star shape indicates seen in adults only

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

star shape indicates seen in adults only star shape indicates seen in adults only   Infection with Bonamia spp., Marteilia spp., Mikrocytos spp., Perkinsus spp .
Bacterial diseases of molluscs
Infection with Xenohaliotis californiensis star shape indicates seen in adults only star shape indicates seen in adults only star shape indicates seen in adults only star shape indicates seen in adults only

 

    Infection with Perkinsus spp.
Parasitic diseases of molluscs
Infection with Bonamia species star shape indicates seen in adults only star shape indicates seen in adults only star shape indicates seen in adults only  star shape indicates seen in adults only  star shape indicates seen in adults only Infection with Bonamia spp., Mikrocytos spp.
Infection with Bonamia exitiosa

 

star shape indicates seen in adults only star shape indicates seen in adults only star shape indicates seen in adults only  star shape indicates seen in adults only  star shape indicates seen in adults only
Infection with Bonamia ostreae star shape indicates seen in adults only star shape indicates seen in adults only star shape indicates seen in adults only  star shape indicates seen in adults only  
Infection with Marteilia refringens star shape indicates seen in adults only star shape indicates seen in adults only

 star shape indicates seen in adults only

star shape indicates seen in adults only star shape indicates seen in adults only     Infection with Bonamia spp., Marteilia spp., Mikrocytos spp.
Infection with Marteilia sydneyi

star shape indicates seen in adults only

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

 star shape indicates seen in adults only

star shape indicates seen in adults only

star shape indicates seen in adults only 

    Infection with Bonamia spp., Mikrocytos spp.
Infection with Marteilioides chungmuensis star shape indicates seen in adults only

 

 

   star shape indicates seen in adults only Nil (histology required)
Infection with Mikrocytos mackini star shape indicates seen in adults only

 

 star shape indicates seen in adults only

Infection with Perkinsus marinus star shape indicates seen in adults only star shape indicates seen in adults only star shape indicates seen in adults only star shape indicates seen in adults only

 star shape indicates seen in adults only

star shape indicates seen in adults only  star shape indicates seen in adults only  star shape indicates seen in adults only Infection with Perkinsus spp.
Infection with Perkinsus olseni star shape indicates seen in adults only star shape indicates seen in adults only

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

star shape indicates seen in adults only