What are examples of r-selected species?

What are examples of r-selected species?

Examples of r-selected species include pest organisms, such as rodents, insects, and weeds.

Are mammals R or K-selected?

In this equation N is the number of individuals in the population, t is time, and r is the biotic potential. Examples of K-selected species include birds, larger mammals (such as elephants, horses, and primates), and larger plants.

Do K or r-selected species?

R- and K-selection constrain the range of viable species through the colonization-competition tradeoff, with strong r-selection favoring colonizers and strong K-selection favoring competitors, but the level of disturbance also affects the success of species.

Are crocodiles K-selected?

Some reptiles, like alligators and crocodiles, are also K-selected, living for a long time and laying eggs multiple times. Some even provide early parental care over their eggs and offspring.

Which of the following is an R strategist?

Insects produce a large number of offsprings and fall in the category of r strategist. Thus, the correct answer is B, Insects.

Are sea turtles R or K strategists?

Similarly, reptiles such as sea turtles display both r- and K-traits: although large organisms with long lifespans (should they reach adulthood), they produce large numbers of unnurtured offspring.

Which example best illustrates a Semelparous K-selected species?

Which example best illustrates a semelparous, K-selected species? Locusts (grasshoppers in the family Acrididae) undergo cyclic population outbreaks, leading to massive swarms.

Which organisms would be most likely to be K-selected?

K selected organisms produce few offspring but invest a lot of energy in them, and examples would include whales, primates (which includes humans), elephants, and some birds, like arctic terns.

Is Blue Whale K-selected species?

Large K selected tree such as the giant sequoia, red wood tree, large terrestrial mammals like elephants, rhinoceros and grizzlies, and large marine mammals such as blue whales and sperm whales are all competitively dominant species that run a substantial risk of extinction.

What are K selected species?

K-selected species possess relatively stable populations fluctuating near the carrying capacity of the environment. These species are characterized by having only a few offspring but investing high amounts of parental care. Elephants, humans, and bison are all k-selected species.

What animals are semelparous?

Other semelparous animals include many insects, including some species of butterflies, cicadas, and mayflies, many arachnids, and some molluscs such as some species of squid and octopus. Semelparity also occurs in smelt and capelin, but is very rare in vertebrates other than bony fish.

Are cats r-selected?

Cats and dogs are r-selected compared to humans, but K-selected compared to mice and rats. Mice and rats, in turn, are K-selected compared to most insects. We can think of an r-K selection continuum and an organism’s position along it in a particular environment at a given instant in time (Pianka 1970).

Are cats K species?

Compared to members of those wild species who lay hundreds to thousands of eggs that receive no parental care and die young, the domestic canine and feline species are classified as K species.

Are dogs K or R strategists?

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 happens if u cut a cat’s whiskers off?

Cutting whiskers is not only painful, but can decrease a cat’s spatial awareness. This can cause them to knock into things, become disorientated, less able to protect themselves from danger and less agile. So, put the scissors away and let your cat’s whiskers grow wild!