- What does R stand for in ecology?
- How long do rabbits live for?
- How many babies do rabbits have?
- Why are rabbits R selected?
- What are three traits of an R strategist?
- Are cats R strategists?
- What is an R strategist species?
- Are cockroaches R strategists?
- What other animals can you think of would be r strategists?
- Are rabbits R selected?
- Is yeast an R-selected or K-selected species?
- Why do we use the symbols R and K for these strategies?
- What does R stand for in r-selected species?
- What is an example of an R strategist?
- Are Lions R or K-selected?
- Are birds R or K strategists?
- Are frogs K strategists?
- Are jellyfish r-selected species?
What does R stand for in ecology?
The first variable is r (the intrinsic rate of natural increase in population size, density independent) and the second variable is K (the carrying capacity of a population, density dependent)..
How long do rabbits live for?
European rabbit: 9 yearsRabbit/Lifespan
How many babies do rabbits have?
And as you watch, the fur wiggles…. Rabbits are pregnant for 4-5 weeks and can have up to 15(!) babies, but the average litter size is 7. The female rabbit is called a doe, giving birth is called kindling and baby rabbits are called kittens.
Why are rabbits R selected?
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.
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 cats R strategists?
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.
What is an R strategist species?
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 cockroaches R strategists?
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. They grow quickly and produce as many offspring as possible to carry on genetic information.
What other animals can you think of would be r strategists?
Many aquatic organisms like some species of fish, frogs, and salamanders have relatively short lifespans, reach sexual maturity rapidly, and reproduce by releasing hundreds of eggs with only a few surviving to adulthood. Arthropods like insects, spiders, and crustaceans are also R-selected.
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.
Is yeast an R-selected or K-selected species?
Expert Answer Yeast is an r-selected because they indicate high biotic factor and produce many offspring within a short time.
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.
What does R stand for in r-selected species?
A whale tends for a single calf. r-selection: On one extreme are the species that are highly r-selected. r is for reproduction. Such a species puts only a small investment of resources into each offspring, but produces many such low effort babies.
What is an example of an R strategist?
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.
Are Lions R or K-selected?
Common examples of k-strategists species include humans, lions and whales.
Are birds R or K strategists?
K-selected species are characterized by long gestation periods lasting several months, slow maturation (and thus extended parental care), and long life spans. … Examples of K-selected species include birds, larger mammals (such as elephants, horses, and primates), and larger plants.
Are frogs K strategists?
Frogs produce many eggs, and a fraction live to reproduce themselves. They are an example of r-strategists. “r and K selection.” University of Miami: Department of Biology.
Are jellyfish r-selected species?
(b) Dandelions and jellyfish are both considered r-selected species as they mature early, have short lifespans, and produce many offspring that receive no parental care.