Quote:
Originally Posted by T-TOP
I will add to this about high salinity levels.
Perkinsus marinus a parasite that causes Dermocystidium Marinum (also known as Derma)= this parasite kills oysters.
The critical environmental factors which favor the proliferation of the parasite are high
water temperatures and high salinities. Thus infections are more intense in the late summer, on
the seaward side of estuaries and during droughts.
Also when you control the salinity going in the lake the sediment will also be controlled it goes hand and hand really.
Most of this info that I post is in the oyster assessments that are on the LDWF website. Very informative for a person that is interested in these issues.
|
add to this and what capt coonassty said, there are a few oyster reef restoration projects (several miles of them) around the state that are showing the same thing. One at Vermilion Bay SW Pass are not growing oysters due to too much freshwater. At Grand Isle the water is too saline too long and they are getting hammered by drill snails. The project in St Bernard Parish though seems to be the perfect mix as they are growing oysters 'like gangbusters' per the manager
add: some of the reefs are enclosed so there is no predation from black drum to account for either