LIGHTNER: POSTMORTEM CHANGES IN BROWN SHRIMP 





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Figure 6. — a. Normal gills. 120 x . b. An unidentitied ciliated protozoan abundant on the gills at 4 h postmortem. 240 X . c. 

 Gills at 12 h postmortem. Note the absence of the protozoan and the presence of pyknotic nuclei in the cellular elements. 

 130 X. d. Gills at 24 h postmortem. Except for a few pyknotic nuclei only the cuticle and cellular debris remain. 160 X. e. 



Gills at 48 h postmortem. The tissue is still recognizable as gills: however, the lamellae are losing their usual "dumbbell" 

 appearance and contain only eosinophilic cellular debris. 190 X. f. Gills at 72 h postmortem. GUIs were recognizable his- 

 tologically only from this one of four animals examined. 120 X . 



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