26.03.2013 Views

THE VARIED ROLES OF SNAILS - National Universities Commission

THE VARIED ROLES OF SNAILS - National Universities Commission

THE VARIED ROLES OF SNAILS - National Universities Commission

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

digestible vegetable. Tough plants and algae are consumed<br />

as long as they are able to grasp their pieces as food with<br />

their radula. They consume litters on the forest floors.<br />

Carnivory in some Taxa involve grazing on colonial<br />

animals. Some others engage in hunting their preys.<br />

Two techniques used in devouring other snails include<br />

attacking the prey by introducing the proboscis into the<br />

aperture of the victim and eating the flesh; or by gnawing<br />

holes into the victim’s shell in several stages with the<br />

radula and eating the exposed tissues. Most snails are<br />

opportunistic, feeding on even fish, frogs, crustaceans and<br />

insects.<br />

(i) Predators: Snails are a popular food source for<br />

various animals like birds, turtles, tortoise,<br />

fishes, insects, crocodiles, snakes, snail kites, and<br />

lizards. Mammals including man also prey upon<br />

snails. Table 2 gives a list of some groups<br />

identified as predators of snails.<br />

TABLE 2: LIST <strong>OF</strong> SNAIL PREDATORS<br />

Names of the predators of their types<br />

Insects Sciomyzidae<br />

49

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!