Why Are Elephants K-Selected Species?

Are cats K strategists?

Animals such as fish and frogs that lay hundreds of eggs at a time are R-strategists, animals such as humans, puffins and the majority of other organisms are K-strategists.

The image shown shows a cat, an example of a organisms that produces few long living organisms..

Are redwood trees K-selected species?

redwood trees. K-selected species are living organisms that tend to be larger than those in the r-selected species. … Redwood trees are the biggest and tallest trees in the planet; they can live up to a thousand years.

Are coyotes K selected species?

Coyotes are swift runners and can easily leap an average of eight feet. While still considered a K- selected species, coyotes are further along the continuum toward r-selected species than the giant panda because of a higher number of offspring and a shorter weaning period.

Are elephants K or R selected?

Elephants, humans, and bison are all k-selected species. On the other hand, r-selected species often inhabit unstable environments and are completely density independent. These species often have short life expectancies, produce as many offspring as they can, and invest very low amounts of parental care.

Why are K selected species specialists?

K-selected species produce offspring that each have a higher probability of survival to maturity. Although not always the case, K-selection is more common in larger animals, like whales or elephants, with longer lifespans and overlapping generations. The young tend to be altricial (immature, requiring extensive care).

Why are K selected species more vulnerable to becoming extinct or endangered?

Why might larger species be generally more vulnerable to extinction compared with smaller species? Because they reproduce slowly, older, and have less offspring than smaller, r-selected species. … K-selected species reproduce slower and have less offspring than r-selected species.

Are Lions K-selected?

Common examples of k-strategists species include humans, lions and whales.

Are rabbits r-selected species?

Typical examples of r-species are mice, rabbits, weeds and bacteria, which have a lot of offspring, but a short life expectancy. Examples of organisms undergoing K-selection are tortoises, elephants, people, and sequoia trees: their offspring are few but long-lived.

Why are endangered species k selected?

Endangered species are likely to be K-selected species because they produce fewer offspring and breed less frequently. They also have a later reproductive age and a low population growth rate.

Which species is most likely to become extinct?

Because of this, three of the five species of rhinoceros are among the most endangered species in the world: the black rhino, the Javan rhino, and the Sumatran rhino. The Javan rhino is the closest to extinction with only between 46 to 66 individuals left, all of which are in Ujung Kulon National Park in Indonesia.

Why are rabbits r-selected species?

So this begs the question are rabbits truly prolific, and why? In Page 2 the 1960s two ecologists came up with r/K selection theory. It relates to parental investment and reproductive strategies adopted by species in order to advance its kind into the future. … And they have the ability to reproduce rapidly.

Are dogs r-selected species?

Indeed, one can think of a given organism as an “r-strategist” or a “K-strategist” only relative to some other organism; thus statements about r and K selection are invariably comparative. Cats and dogs are r-selected compared to humans, but K-selected compared to mice and rats.

What are three traits of an R strategist?

Among the traits that are thought to characterize r-selection are high fecundity, small body size, early maturity onset, short generation time, and the ability to disperse offspring widely. Organisms whose life history is subject to r-selection are often referred to as r-strategists or r-selected.

Are horses K strategists?

Examples of K-selected species include birds, larger mammals (such as elephants, horses, and primates), and larger plants.

Are humans specialists or generalists?

“However, Homo sapiens demonstrate evidence for ‘specialist’ populations, such as mountain rainforest foragers or paleoarctic mammoth hunters, existing within what is traditionally defined as a ‘generalist’ species.”

Are K-selected species opportunists?

Explanation: R-selected or opportunistic species are species that have high growth rates, produce many offspring, and have low survival odds for those many offspring. … Examples of k-selected species include mammals such as humans, dolphins, and rhinos.

What are five common characteristics of most endangered species?

The definitions of the three threatened categories (vulnerable, endangered, and critically endangered) are based on five criteria: population reduction rate, geographic range, population size, population restrictions, and probability of extinction.

Are turtles R or K-selected?

Plants such as dandelions are another good example of an r-selected species. … Sea turtles are a good example of a species that fits somewhere in the middle. The produce many eggs and do not care for their offspring once the eggs have been laid, but turtles live very long lives.

Are trees K-selected?

K-selected species While larger in size when born, the offspring are relatively helpless and immature at birth. … Examples of K-selected species are primates including humans, other mammals such as elephants, and plants such as oak trees.

Are humans R or K strategists?

Both across and within species, r and K strategists differ in a suite of correlated characteristics. Humans are the most K of all. K’s supposedly have a longer gestation period, a higher birthweight, a more delayed sexual maturation, a lower sex drive, and a longer life.