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Do elephants have a Type 1 survivorship curve?
Elephants have a Type I survivorship curve (mortality increases with age), and fecundity decreases with age.
Do whales have a type 1 survivorship curve?
What is a survivorship curve? A graph showing the number or proportion of individuals surviving to each age for a given species or group. What type of survivorship curve would best describe most whale species? Type 1.
Are frogs Type 1 survivorship curve?
It should also be noted here that not all frogs display a type III survivorship curve. These species have much lower death rates for their offspring, and because they have poisons that protect them from predation throughout their adult lives, they display a type I survivorship curve similar to that of humans.
Are bears Type 1 survivorship curve?
This urban bear population no longer exhibits the Type I survivorship curve generally associated with large mammals that produce few offspring.
What is a Type 1 curve?
In survivorship curve. The Type I curve, illustrated by the large mammals, tracks organisms that tend to live long lives (low death rate and high survivorship rate); toward the end of their life expectancies, however, there is a dramatic increase in the death rate.
What are the 3 types of survivorship curve?
There are three types of survivorship curves. Type I curves depict individuals that have a high probability of surviving to adulthood. Type II curves depict individuals whose chance of survival is independent of age. Type III curves depict individuals that mostly die in the early stages of their life.
What is a Type 1 survivorship curve?
What is a late loss survivorship curve?
Late loss survivorship curve Mortality (death rate) Is very low in the infant and juvenile years, and throughout most of adult life. Mortality increases rapidly in old age. Examples: Humans (in developed countries) and many other large mammals {e.g. big cats, elephants).
What do animals have a type 2 survivorship curve?
A type II survivorship curve shows a roughly constant mortality rate for the species through its entire life. This means that the individual’s chance of dying is independent of their age. Type II survivorship curves are plotted as a diagonal line going downward on a graph.
Which is the most common survivorhip curve in nature?
This appears to be the most common survivorship curve among animals and plants in nature. Figure 4.7 Mortality and survivorship in the life cycle of Phlox drummondii. (a) The age-specific daily mortality rate (qx) and daily killing power (kx). (b) The survivorship curve: log10 lx plotted against age. (After Leverich & Levin, 1979.)
Which is an example of a type 2 Survivor?
For populations with Type II survivorship, the mortality of an individual does not depend on its age. Commonly listed examples of this include rodents, adult birds, and certain turtle species. Moreover, what is a Type 2 survivorship curve?
What kind of survivorship curve does a gorilla have?
What type of survivorship curve do gorillas exhibit? Gorillas have a relatively low birth rate. They take good care of their young, and most gorillas live a long life. The gorilla survivorship curve would look like: A relatively flat line that drops steeply at the end.