Cannibalism (zoology)

Cannibalism (zoology)

Cannibalism in zoology refers to instances in which certain species, including various types of insects, fish, and mammals, consume all or part of another individual of the same species as food. While this behavior may be observed in humans in extreme situations, it is more commonly associated with the animal kingdom.

Overview

Cannibalism is a common ecological interaction in the animal kingdom and has been recorded for more than 1500 species. It is often considered to be a response to high population density, resource scarcity, or the absence of alternative sources of nutrition.

Types of Cannibalism

There are three main types of cannibalism: filial cannibalism, sibling cannibalism, and sexual cannibalism.

Filial Cannibalism

Filial cannibalism is a specific type of cannibalism in which adults eat their own offspring. It is particularly common in teleost fishes.

Sibling Cannibalism

Sibling cannibalism (also referred to as siblicide) is seen in species where the first offspring to hatch eats or kills its younger siblings.

Sexual Cannibalism

Sexual cannibalism is a special case of cannibalism in which a female organism kills and consumes a conspecific male before, during, or after copulation.

Evolutionary Implications

Cannibalism can have profound effects on the evolution and population dynamics of organisms. It can be an important factor in the survival and reproductive success of a species.

See Also

• Cannibalism (human)
• Cannibalism in poultry
• Animal behavior
• Predation