Is an elephant K-selected species?

Is an elephant 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’s an R strategist?

R-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Wilson; K-selected species—that is, species whose population sizes fluctuate at or near their carrying capacity (K)—make up the second strategy.

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.

Are cats r selected species?

r selected species are also known as r strategists and opportunistic species. They practice big-bang reproduction, AKA semelparity. Cats are r-selected compared to humans, and K-selected compared to cockroaches.

Are cockroaches R or K-selected?

In terms of population growth, organisms may be described as either r-selected or K-selected. R-selected species are things like the cockroach. They’re generally small and have short lives, so their best bet is to put their energy into growth.

Are Tigers k-selected?

Tigers are more K-selected when compared to leopards31 and should exhibit slower life history traits manifesting in slower population growth when compared to leopards.

Which is true of K-selected species?

K-selected species possess relatively stable populations and tend to produce relatively low numbers of offspring; however, individual offspring tend to be quite large in comparison with r-selected species. In this equation N is the number of individuals in the population, t is time, and r is the biotic potential.

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 Squirrels K-selected or R-selected?

Tree squirrels are K-selected compared to ground squirrels but rodents are r-selected compared to elephants, etc.

Are song sparrows K strategists?

Song sparrows reproduce multiple times in a year and have limited parental care, traits of r-strategists. Generalists can live in a variety of habitats and have diverse diets.

Are Fish R strategists?

R strategists usually create an abundance of offspring in the hopes that a few will make it. include bacteria, insects, and fish. lessons from their parents. K-selected species include elephants, apes and whales.

Are minnows R strategists?

Select from the following list the species that are r-strategists: minnow, giraffe, human, beetle, bacteria, eagle, and cougar. Minnow,beetle and bacteria because they all have short lifespans and focus on quick reproduction.

Are Wolves K selected?

K-selected species have less offspring but invest much more in them, such as the wolf. You can read up more on them, it’s interesting stuff. Humans in general are a K-selected species, we have offspring relatively late and in lower numbers, invest a lot in them, and are a competitive species.

Are rabbits R-selected?

R-selected organisms, those emphasizing a fast growth rate, high number of offspring, include rabbits, bacteria, salmon, plants such as weeds and grasses, etc.

Why do we use the symbols R and K for these strategies?

In the equations describing growth of populations of organisms, r represents the slope of the line representing exponential growth. The letter K represents the carrying capacity of a habitat for members of a given sort of organism.