A female elephant bears a single offspring every two to four...

Name: A female elephant bears a single offspring every two to four years. Based on this information, which survivorship curve do you think is representative of elephants? Explain your answer.
Uploaded: 2022-08-22T13:38:22-08:00
Duration: 3 min 27 s
Channel: Nicholas Mogoi
Description: A female elephant bears a single offspring every two to four years. Based on this information, which survivorship curve do you think is representative of elephants? Explain your answer.

A female elephant bears a single offspring every two to four years. Based on this information, which survivorship curve do you think is representative of elephants? Explain your answer.

Transcript

00:04 Cups, and particularly we are looking at elephants.

00:20 Elephants are interesting organisms because elephants in nature are especially the females are not to consistently producing offspring at intervals of two to four years.

00:39 This is a perfect illustration of survivorship type of type 1 curve because we have basically if you look at this last station here we have time okay and then we have percentage of organisms surviving on this y -axis so what will happen is you'll have three types of curves here number one we'll have a type 1 basically which is a perfect examples of humans maybe then we'll have type 2 and then we'll have type 3 so this is type 3 this is type 2 this is type 1 survival curve okay and examples here maybe a frog will have this type 3 okay and songbirds can have type 2 and then humans elephants can have type 1 what happens in type 1 is that individuals in the population for instance given the elephants have survived to adulthood without a decrease in population size but then you discover that with elephants one thing that distinguishes them or one thing that puts them in this survival type one curve is that mortality increases with age but then fecundity decreases with age all right for elephants so that's why we are categorizing elephants into these categories.

02:27 And usually, the population is provided with a high amount of parental care at young stages, which means we're having a low death rate for infants, for juveniles.

02:43 And then parental case is also possible because of the number of offspring born is low.

02:47 Low offspring.

02:48 We just have two to four years, just one offspring for elephants, mostly...

Question

A female elephant bears a single offspring every two to four years. Based on this information, which survivorship curve do you think is representative of elephants? Explain your answer.

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