APHOTOMARINE

An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.

A-P-H-O-T-O Wildlife Stock Image Library
Inodosporus octosporus (Henneguy, 1892) R.M. Overstreet & E. Weidner, 1974 - Cotton or Milk disease
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Cotton disease of prawn
Inodosporus octosporus
- prawn Palaemon longirostris 1

Cotton disease of prawn
Inodosporus octosporus
- prawn Palaemon longirostris 2

Cotton disease of prawn
Inodosporus octosporus
- prawn Palaemon longirostris 3

The specimen was found in the prawn Palaemon longirostris netted on the River Tamar at Halton Quay, Cornwall, 14.04.22.

Cotton disease of prawn
Inodosporus octosporus
- prawn Palaemon serratus 1

Cotton disease of prawn
Inodosporus octosporus
- prawn Palaemon serratus 2

Cotton disease of prawn
Inodosporus octosporus
- prawn Palaemon serratus 3

Cotton disease of prawn
Inodosporus octosporus
- prawn Palaemon serratus 4

Cotton disease of prawn
Inodosporus octosporus
- sporophorous vacuole with eight spores 1

Cotton disease of prawn
Inodosporus octosporus
- sporophorous vacuoles with eight spores 1

Inodosporus octosporus is commonly known as Cotton or Milk disease of Palaemon serratus, it is very likely the species present here, although there are a number of other fungi that also affect prawns and can turn the muscles white.

This species has sporophorous vacuoles with eight spores and these can be seen using a light microscope on smearing a slide with mashed muscle material then staining with Methyl Blue stain. High magnification over x400 is needed and ideally oil immersion and phase contrast techniques are used to look at the spore containing vacuoles.

The specimen was found on Cellars Beach, Noss Mayo, Devon, 13.07.18 during the Marine Biological Association bioblitz 2018 at Newton Ferrers and Noss Mayo.

Inodosporus octosporus Cotton or Milk disease of prawn Palaemon serratus fungi images
The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help
people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.