19. Measurements of lifetime reproductive success (LRS) of individual wild anima

Question

19. Measurements of lifetime reproductive success (LRS) of individual wild animals reveal the disparate contributions they make to the next generation. Jensen et al. (2004) estimated LRS of male and female house sparrows in an island population in Norway. They measured LRS of an individual as the total number of "recruits" produced in its lifetime, where a recruit is an offspring that survives to breed one year after birth. Parentage of recruits was determined from blood samples using DNA techniques. Their results are tabulated as follows: ea In th th 0 Lifetime reproductive success Frequency Females Males 30 25 38 17 10 22. A dit fer ag les se ber >8 81 84 Total a. Which sex has the higher mean lifetime reproductive success? 12.7

Explanation / Answer

For females - 81÷8 = 10.1

For males - 84÷8 = 10.5

So males has the higher mean lifetime reproductive success.

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