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They develop little f lippers, then an “eye.” Those that survive for two weeks then grow a “foot,” which they use for crawling on the bottom and attaching to something hard. An oyster larva at this stage is known as a pediveliger. (Your second Scrabble word.) Spat ~ The pediveliger finds a hard substance on which to settle and does so, never to move again. This is known as “setting,” and the little guy now is called a “spat.” If no hard substance is found, the pediveliger drops to the bottom, where it soon is covered with silt and dies. Adults ~ From this stage on, spat extract food ~ plankton, minerals,

and nutrients ~ from the water that flows by. They grow an inch or more a year and, to protect themselves f rom predators, t hey for m t hat familiar protective shell that is so very hard ... and difficult to open. The diagram below illustrates the stages of oyster growth and may prove helpful. That concludes our biology lesson for today. Okay, now back to the farming. Farmers need a supply of “seed.” A r t if icia lly fer t i li z ing t he eg gs (Stage 1 in the graphic) requires sophisticated equipment and highly trained personnel to monitor salinit y levels a nd temperat ures, set fe e d i ng m i x t u re s properly,

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Profile for Tidewater Times

June 2017 ttimes web magazine  

Tidewater Times June 2017

June 2017 ttimes web magazine  

Tidewater Times June 2017