What are the reproductive strategies of an R strategist?
Their reproductive strategy is to grow slowly, live close to the carrying capacity of their habitat and produce a few progeny each with a high probability of survival. Typical K-selected organisms are elephants, and humans. The table below summarizes some of the differences between r-organisms and K-organisms.
What is R and K reproductive strategy?
The terms r-selection and K-selection are used by ecologists to describe the growth and reproduction strategies of organisms. r-selected species have a high growth rate but low survivability (“cheap” offspring) K-selected species have a low growth rate but high survivability (“expensive” offspring)
What is the difference between R and K strategies?
The key difference between r strategist and K strategist is that the r strategist lives in unstable and unpredictable environments while the K strategist lives in more stable environment. Because of this environmental conditions, the r strategists produce many offspring while the K strategists produce few offsprings.
What is the difference between R and K reproduction?
r is for reproduction. Such a species puts only a small investment of resources into each offspring, but produces many such low effort babies. K refers to the carrying capacity, and means that the babies are entering a competitive world, in a population at or near its carrying capacity.
Is a whooping crane R or K-selected?
Not much is known about the learning that takes place in this K-selected species over the almost one year that the young whooping crane colt remains with its adult parents.
What are 2 differences between a R and K strategist?
Are cats r selected species?
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 Lions R or K-selected?
Common examples of k-strategists species include humans, lions and whales.
What is an example of r-selected species?
Examples of r-selected species include pest organisms, such as rodents, insects, and weeds.
Are frogs K strategists?
Are frogs R strategists? Frogs produce many eggs, and a fraction live to reproduce themselves. They are an example of r-strategists.
Which is better a k or A R reproductive strategy?
K and r Reproductive Strategies. They are larger in size and have longer life expectancies. They are stronger or are better protected and generally are more energy efficient. They produce, during their life spans, fewer progeny, but place a greater investment in each. Their reproductive strategy is to grow slowly,…
How are K and are strategists related to each other?
The first kind of organisms are called k-strategists in terms of reproduction, and the second kind of organisms are called r-strategists. The terms “k” and “r” comes from the typical graph that describes the population growth of organisms with respect to the natural resources and natural forces available in their environment.
How is the are / K selection theory explained?
The r/k selection theory proposes to explain the reproduction strategies of species with respect to their environmental characteristics. Ecologists of the 1970’s categorized species into two categories: those that lived in stable environments and those that lived in unstable environments with many environmental stresses threatening the population.
Which is an example of a K selection strategy?
They produce, during their life spans, fewer progeny, but place a greater investment in each. Their reproductive strategy is to grow slowly, live close to the carrying capacity of their habitat and produce a few progeny each with a high probability of survival. Typical K-selected organisms are elephants, and humans.