What survivorship curve do K strategists follow?
The Type I curve, or A curve is typically followed by k-strategist organisms. Their population mortality is low until they reach the end of their lifespan.
What animal has a Type 1 survivorship curve?
Elephants have a Type I survivorship curve (mortality increases with age), and fecundity decreases with age.
Why do K selected species follow Type 1 survivorship curve?
Because time, energy and resources are invested into child rearing, K -selected species tend to have a Type 1 and Type 2 survivorship curve. Offspring live longer lives and grow slowly until their habitat hits the carrying capacity.
What causes a Type 3 survivorship curve?
Type III or concave curves have the greatest mortality (lowest age-specific survival) early in life, with relatively low rates of death (high probability of survival) for those surviving this bottleneck. This type of curve is characteristic of species that produce a large number of offspring (see r/K selection theory).
What organisms have a Type 3 survivorship curve?
Trees, marine invertebrates, and most fish have a Type III survivorship curve. In a Type III curve, very few organisms survive their younger years.
What is Type 3 survivorship curve?
In survivorship curve. The Type III curve, characteristic of small mammals, fishes, and invertebrates, is the opposite: it describes organisms with a high death rate (or low survivorship rate) immediately following birth.
Are K-selected species type 1?
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….r- and K-selection.
| Characteristic | r | K |
|---|---|---|
| Early mortality | high | low |
How does the type I survivorship curve reflect the reproductive strategy of K-selected species?
How does the Type I survivorship curve reflect the reproductive strategy of K-selected species? Type 1 curve reflects that offspring survive more in the earlier years than the late years when they get older. The parental care to offspring.
What are the characteristics of K-selected species?
K-selected species are characterized by long gestation periods lasting several months, slow maturation (and thus extended parental care), and long life spans. In addition, they tend to inhabit relatively stable biological communities, such as late-successional or climax forests (see ecological succession).
Is Type 3 survivorship R or K?
Type III survivorship curves are characteristic of r-selected species. Type II survivorship curves exhibit relatively constant survivorship and mortality throughout different age groups and therefore are not r-selected or K-selected, but instead somewhat in the middle of the continuum between the two.
What is the meaning of K-selected 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.
What is survivorship curve in biology?
survivorship curve, graphic representation of the number of individuals in a population that can be expected to survive to any specific age.
What is K selection in ecology?
What animal has a type 1 survivorship curve?
what type of survivorship curve are elephants? Elephants have a Type I survivorship curve (mortality increases with age), and fecundity decreases with age. Thereof, what animals have a Type 2 survivorship curve? For populations with Type II survivorship, the mortality of an individual does not depend on its age.
What are the 3 types of Survivorship curves?
population is plotted on the y -axis of the graph and the age of survivorship is plotted on the x-axis of the graph. There are three types of survivorship curves, and they are simply referred to as type I, type II, and type III. A type I survivorship curve shows individuals that have a high probability of surviving
What do animals have a Type 3 survivorship curve?
Ovulation factor. If you have regular menstrual cycles,you are probably ovulating (releasing ripe eggs from your ovary).
What are the different types of survivorship curve?
– The r/k selection theory. The r/k selection theory proposes to explain the reproduction strategies of species with respect to their environmental characteristics. – Survivorship curves. – Conclusion.