AIS include plant life such as Eurasian watermilfoil and water hyacinth, and animals such as spiny water flea
, quagga and zebra mussels.
But a handful of others-sea lamprey, alewife, round goby, quagga mussel, zebra mussel, Eurasian watermilfoil, spiny water flea
, and rusty crayfish-have conducted an all-out assault on the Great Lakes and are winning the battle.
The spiny water flea
, a predatory, invasive crustacean less than a half-inch long, thrives in deep, cold and clean water.
While he agrees that the fishery is in decline, he points to the invasion of the spiny water flea
in the lake.
For the past several years, spiny water flea
and emerald ash borer (two invasives) have rapidly spread through New York's waters and forests (respectively).
"Some lakes invaded by the spiny water flea
may serve as invasion hubs if departing boaters and anglers travel to a large number of non-invaded destination lakes," said the researchers.
Spiny water flea
spores have been identified in ballast-tank residue, and it's possible this is how this and other alien species have found their way into the lakes.
There's the blueback herring, ruffe, tubenosed gobies and, the ever-popular spiny water flea
. These are all recent arrivals that have come in ship ballast water.
Biology of recent invertebrate invading species in the Great Lakes: the spiny water flea
, Bythotrephes cederstroemi and the zebra mussel, Dreissena polymorpha.
The spiny water flea
, Bythotrephes cederstroemi (BC), represents another potential exotic threat to the Great Lakes.
Spiny water fleas
disrupt the natural food chains in the areas they invade by competing with native zooplankton (microscopic aquatic animals) for food, as well as eating native zooplankton.
Pula said the power washing of boat hulls and trailers, the flushing of outboard motors, live wells and bilges with scalding water provided a further guarantee the reservoir would not be inadvertently populated with other invasive species, including the spiny water flea
, Eurasian milfoil, water chestnut and fanwort.