The use of lime to control tunicate populations has little or no impact on lobsters and other marine life, according to a new government study.
Tunicate can completely cover a mussel sock, making it difficult for them to feed. (CBC)
Tunicate are an invasive species that are a serious threat to the mussel industry. Tunicate attach themselves to mussel socks, completely covering them and making it difficult for the mussels to feed.
Lime is used in the mussel industry to remove tunicate from the lines. Lime is also used in the oyster fishery, mainly to remove starfish.
Fisheries and Oceans Canada and the P.E.I. Department of Fisheries have been working on a multi-year project to study the impact of lime. Neil MacNair, director of the aquaculture division with the province, said some of the tests included species such as lobster larvae.
"There is very, very low impact, or of no concern," said MacNair.
"The other thing they did in the lab is that they showed that lobster larvae can avoid detecting, avoid high concentration of lime, so if there ever was a high concentration of lime in the environment, they would avoid it, but we don't see that , those levels at all in the marine environment."
MacNair said tests also show the lime had no permanent affect on the water.
The federal government is still doing dives around P.E.I. to measure the amount of lime on the ocean floor.
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