Do zebra mussels increase algae blooms?

While invasive zebra mussels consume small plant-like organisms called phytoplankton, Michigan State University researchers discovered during a long-term study that zebra mussels can actually increase Microcystis, a type of phytoplankton known as “blue-green algae” or cyanobacteria, that forms harmful floating blooms.

Does zebra mussels eat algae?

Zebra mussels are known to consume all types of algae but one. Cyanobacteria, which continues to be a large problem for Madison’s lakes and which poses a risk to humans, is not eaten by zebra mussels. In fact, cyanobacteria may even do better in water systems where zebra mussels are present.

How do zebra mussels affect algae?

The mussels eat virtually everything they can filter – except for microcystis, which they spit out. The theory is that the mussels help foster a blue-green algae bloom by reducing competing algae.

How do zebra mussels affect phytoplankton?

Zebra mussels are suspension feeders, eating phytoplankton, small zooplankton, large bacteria, and organic detritus by filtering the water and straining out the edible material. Phytoplankton and zooplankton form the base of the aquatic food web, so many animals depend on them for survival.

Do zebra mussels eat blue-green algae?

Zebra mussels are filter feeders that consume microscopic free-floating algae in the water. They attach to hard surfaces in lakes and reproduce extremely quickly. However, they prefer not eat the blue-green algae, also known as cyanobacteria , that make up potentially-toxic blooms in the summer.

What does an increase in the growth of toxic algae bloom caused by zebra mussels in the Great lakes lead to?

“When nutrient levels increase, so does the risk of stimulated algae blooms,” Nogaro said. “The blooms are problematic because you can’t enjoy the lakes, and because certain blooms of cyanobacteria can release toxins into the water, which impacts fish and other wildlife.”

Do zebra mussels clean the water?

Mussels are filter feeders, which means they feed by clearing nutrients from the water passing through them. The rate of reproduction and spread of zebra mussels make them efficient cleaners of Great Lakes water, but whether that’s a positive or negative thing depends on who you’re asking.

Do zebra mussels ever go away?

Zebra mussels have a 3 to 4 year life cycle in our area and go dormant at less than 55 degrees. They cannot survive freezing temperatures. Rumor: Zebra mussels will clean the water allowing weeds to take over the lake.

How zebra and quagga mussels contribute to harmful algal bloom growth?

Zebra mussels filter water of tiny organisms such as algae, which are microscopic aquatic plants. As a result, zebra-mussel infested lakes can wind up with a disproportionate amount of blue-green algae that sometimes gets out of control, scientists said.

How do zebra mussels affect water quality?

Zebra mussels can render beaches unusable, clog water filtration pipes, and destroy boat engines such as in example pictured above. Although small, zebra mussels cause big trouble. These mussels can quickly encrust things, such as this crayfish above.

Are zebra mussels toxic?

Inland lakes in Michigan that have been invaded by zebra mussels, an exotic species that has plagued bodies of water in several states since the 1980s, have higher levels of algae that produce a toxin that can be harmful to humans and animals, according to a Michigan State University researcher.

Do environmental factors affect dreissenid mussel populations?

Despite a highly prolific and invasive nature, little is known about environmental factors regulating dreissenid mussel populations; quagga (Dreissena rostriformis bugensis) and zebra ( D. polymorpha) mussels.

Are dreissenid veligers affected by cyanobacteria blooms?

Dreissenid veligers require highly nutritious food to grow and survive, and thus may be susceptible to increased mortality rates during harsh environmental conditions like cyanobacteria blooms. However, the impact of cyanobacteria and one of the toxins they can produce (microcystin) has not been evaluated in dreissenid veligers.

What is a veliger mussel?

Dreissenid mussels are sessile, benthic bivalves that begin their early life stage as free-swimming larvae called veligers (Quinn and Ackerman, 2012). Veligers range in size from ~60 to 280 μm in length and make up part of the microzooplankton in aquatic habitats (Kennedy et al., 2006; Ackerman et al., 1994).

What drives dreissenid veliger population growth?

Thus, availability of suitable environmental conditions, including adequate phytoplankton, is crucial to successful dreissenid veliger and subsequent population growth. Exposure to cyanobacteria blooms during veliger development could reduce dreissenid population recruitment.