Several species of ducks, geese, beavers and turtles, such as eastern painted turtles and common snapping turtles, eat duckweed. There are also several species of fish that eat duckweed, primarily grass-eating carp such as koi and grass carp, although grass carp will likely eat all other aquatic vegetation before moving on to duckweed.Know More
Although Canada geese and mallard ducks eat duckweed, it is primarily domesticated waterfowl that tend to eat it, not wild species. Some snails, including stagnant pond snails, and gastropods also eat duckweed. Duckweed also provides shelter for a much greater number of species, including snakes, frogs, muskrats and a number of different fish.
There are three different species of duckweed: Wolffia, Lemna and Spirodela. Of the three, Wolffia can be eaten by humans and is quite nutritious. Because most duckweed grows in dirty water with high calcium levels, which the plant then absorbs, most Lemna species have very high levels of calcium oxalate, which can be dangerous for humans. Provided it is grown in clean water, Lemna could also be eaten by people. Lemna is often dried and used as feed for cattle, as it contains more than 45 percent protein and only a small amount of fat.Learn more about Zoology
Animals that might eat humans include bears, big cats, sharks, wolves and some large reptiles, such as crocodiles, alligators and komodo dragons. Scavengers like vultures, coyotes, hyenas, crabs and insects generally eat any dead animal they come across, which includes humans.Full Answer >
Some animals that eat ticks include guinea hens, chickens and wild turkeys. Of these, the guinea hen is the most effective animal for controlling tick populations. Guinea hens eat any insect they come across and especially prefer insects that are visible on the ground or on plant leaves.Full Answer >
The main predators of barnacles are the marine snails known as whelks that use their long proboscises to force the barnacles open. Other predators include juvenile fish, suspension-feeding invertebrates, limpets, crabs, sea stars and humans.Full Answer >
Eagles belong to the class of bird known as raptors, which are a predatory class, meaning that eagles themselves are predators. Eagles are not usually on the diet of any animal, but their young or deceased eagles are sometimes eaten by other animals. For example, adult American bald eagles have no known natural predators thanks to their size, but their nests and eggs may be attacked by animals as small as squirrels.Full Answer >