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March 6, 2016

The World

Aging Shrimp with a Microscope

 

Durwood Dugger, President of BioCepts International, Inc., an aquaculture consulting firm the specializes in shrimp farming, submitted the following comments on a Shrimp News report about aging shrimp with a microscope:

 

“The shrimp aging technique presented—probably only works in northern shrimp where there are strong seasonal affects of growth (molting) related to water temperature and then as pointed out only in a limited way.  Cuticle growth band calcification then is likely a seasonal representation enabling age estimation in some cases.  However, tropical shrimp species molt nearly year round with less mineralization and less distinguishable variation in cuticle layers.  As cold-water species become mature their molt frequency also slows down a lot and that’s why the aging patterns weren’t predictable for older animals—and as noted there are significant variations among species as well.  All in all, a specific species limited, but useful tool—just not to shrimp farmers.”

 

Source: Email to Shrimp News International.  Subject: Aging Shrimp with a Microscope.  From: Durwood Dugger.  March 4, 2016.

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