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Elephants, humans, and bison are all
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.You can see r- and K-selected strategies clearly by looking at different organisms within a phylogenetic group, such as the mammals. For example, elephants are highly K-selected, whereas mice are much more r-selected. Among the fishes, most, like the salmon, are r-selected.Examples of r-strategist species are dogs, cats, insects, and fish.
Are elephants R strategists?
You can see r- and K-selected strategies clearly by looking at different organisms within a phylogenetic group, such as the mammals. For example, elephants are highly K-selected, whereas mice are much more r-selected. Among the fishes, most, like the salmon, are r-selected.
What animals are r strategists?
Examples of r-strategist species are dogs, cats, insects, and fish.
r and K selection | Ecology
Images related to the topicr and K selection | Ecology
What are r-selected species?
r-selected species, also called r-strategist, species whose populations are governed by their biotic potential (maximum reproductive capacity, r). Such species make up one of the two generalized life-history strategies posited by American ecologist Robert MacArthur and American biologist Edward O.
Are whales R or K-selected?
Whale reproduction follows a K-selection strategy, with few offspring, long gestation, long parental care, and a long period until sexual maturity.
What is an example of a 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.
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.
What is an R strategist and K strategist?
r strategist is an organism living in unstable environments. Hence, they undergo rapid reproduction to stabilize themselves. Whereas, K strategist is an organism living in stable environments. Therefore, they are high in population and do not need to undergo rapid reproduction.
See some more details on the topic Are elephants K or r-selected? here:
K-selected species | biology – Encyclopedia Britannica
Examples of K-selected species include birds, larger mammals (such as elephants, horses, and primates), and larger plants. John P. Rafferty.
r and K selection
For example, elephants are highly K-selected, whereas mice are much more r-selected. Among the fishes, most, like the salmon, are r-selected.
K-Selected Species: Definition & Examples – Study.com
Elephants are the classic example for examining K-selected traits. Native to Africa and Asia, these large mammals grow very slowly. It can take …
Elephants vs Mosquitos: Which Approach to Media Outreach …
Humans and elephants are known as “K-selected” organisms. Within these species, individuals have just a few offspring over their lifetime …
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 organism is most likely to be part of an R-selected species?
R-selected organisms, those emphasizing a fast growth rate, high number of offspring, include rabbits, bacteria, salmon, plants such as weeds and grasses, etc.
K selected and r selected population growth strategies | AP Environmental science | Khan Academy
Images related to the topicK selected and r selected population growth strategies | AP Environmental science | Khan Academy
Are deer K-selected or R-selected?
White-tailed deer are a K- selected species and most insects are r-selected species. Population growth as described by the logistic model exhibits a characteristic “S” or sigmoid shape. The basic assumption of the model is that the rate of increase decreases as a linear function of population size.
Are gorillas K-selected species?
Examples of animals that pursue K strategies are gorillas and whales. The largest of the primates, gorillas require specialized diets (with distinct differences in the diets of mountain and lowland gorillas) and produce a single offspring once every three to four years.
Are sea turtles R or K-selected?
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.
What is AK strategist species?
K-selected species, also called K-strategist, species whose populations fluctuate at or near the carrying capacity (K) of the environment in which they reside. Such species make up one of the two generalized life-history strategies posited by American ecologist Robert MacArthur and American biologist Edward O.
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 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.
What are the characteristics of R-selected species?
The traits which are important for the r-selected species’ characteristics include the ability of high reproduction which is the high fertility rate, early onset of maturity, small body size, short generation time, and ability to disperse offspring widely.
r and K selection
Images related to the topicr and K selection
Which of the following is a typical K-selected species adaptation?
Which of the following is a typical K-selected species’ adaptation? K-selected species have a low biotic potential but high survivorship in part because of extended care for their young.
Which is not the characteristic of R selected pieces?
Which is not the characteristic of ‘r’ selected species? The correct answer is – 2. Parental care.
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