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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.The r/k selection theory should be thought of as a spectrum. Some organisms may produce a medium number of offspring but those offspring still grow quickly and the parents provide little care. Sea turtles are a good example of a species that fits somewhere in the middle.Examples of r-selected species include pest organisms, such as rodents, insects, and weeds.
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r- and K-selection.
| Characteristic | r | K |
|---|---|---|
| Size of offspring | small | large |
| Independence at birth | early | late |
| Ability to learn | low | high |
| Lifespan | short | long |
Are sea turtles r-selected species?
The r/k selection theory should be thought of as a spectrum. Some organisms may produce a medium number of offspring but those offspring still grow quickly and the parents provide little care. Sea turtles are a good example of a species that fits somewhere in the middle.
What is an example of an R-selected species?
Examples of r-selected species include pest organisms, such as rodents, insects, and weeds.
r and K selection | Ecology
Images related to the topicr and K selection | Ecology
What species are both R and K selected?
…
r- and K-selection.
| Characteristic | r | K |
|---|---|---|
| Size of offspring | small | large |
| Independence at birth | early | late |
| Ability to learn | low | high |
| Lifespan | short | long |
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.
Are sea turtles R strategist?
Similarly, reptiles such as sea turtles display both r- and K-traits: although sea turtles are large organisms with long lifespans (provided they reach adulthood), they produce large numbers of unnurtured offspring.
What animals are K strategists?
Examples of K-selected species include birds, larger mammals (such as elephants, horses, and primates), and larger plants.
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.
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Are Sea Turtles R Selected Or K Selected? – Neeness
The r selected species live in populations that are highly variable. The fittest individuals in these environments have many offspring and reproduce early. K …
Sea turtles are known as r-selected species. This refers to a …
Sea turtles are known as r-selected species. This refers to a reproductive strategy the involves many offspring and low/no parental …
r/K selection theory – Wikipedia
In ecology, r/K selection theory relates to the selection of combinations of traits in an … Similarly, reptiles such as sea turtles display both r- and K-traits: …
Learning Resources – Wildlife Technology Frontiers
r/K (r-over-K) selection theory addresses the trade-off between quality and … For example, sea turtles or sturgeon are large, long-lived animals that …
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.
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 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.
Are dandelions r-selected species?
Examples of r-selected species are marine invertebrates, such as jellyfish, and plants, such as the dandelion. Dandelions have small seeds that are dispersed long distances by wind; many seeds are produced simultaneously to ensure that at least some of them reach a hospitable environment.
Difference between r-selected and k-selected species
Images related to the topicDifference between r-selected and k-selected 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.
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.
What does K selection mean?
📓 High School Level. Ecology. selection occurring when a population is at or near the carrying capacity of the environment, which is usually stable: tends to favor individuals that successfully compete for resources and produce few, slowly developing young, and results in a stable population of long-lived individuals.
What does R and K mean for population growth?
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.
Are cats R or K 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 is an example of an R strategist?
Examples of r-strategist species are dogs, cats, insects, and fish.
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.
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.
Which of the following species is most likely to exhibit uniform dispersion?
The group that would be most likely to exhibit uniform dispersion is a. red squirrels, who actively defend territories.
The Survival of the Sea Turtle
Images related to the topicThe Survival of the Sea Turtle
What is R in population growth models?
r is the per capita rate of increase (the average contribution of each member in a population to population growth; per capita means “per person”). N is the population size, the number of individuals in the population at a particular time.
Which curve best describes survivorship in elephants?
Elephants have a Type I survivorship curve (mortality increases with age), and fecundity decreases with age.
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