At which age, the cohort of a female Belding’s ground squirrel produces the most female young ones. Introduction: Female Belding’s ground squirrel is a species of squirrels that are inhabitants of mountains and are generally found in the mountains of the U.S. region. Given data: With reference to the Table 53.1, “Life table for Female Belding’s Ground Squirrels”, the average number of female offspring alive and the age of the squirrel are mentioned in the below table. Age of the squirrel Average number of female offspring alive 0-1 0 1-2 269.64 2-3 237.49 3-4 148.07 4-5 90.65 5-6 39.52 6-7 15.3 7-8 9.65 8-9 7.72 9-10 1.58 Table 53.1

Question

Want to see the full answer?

Answer 1

Question

Chapter 53, Problem 10TYU

Summary Introduction

To determine: At which age, the cohort of a female Belding’s ground squirrel produces the most female young ones.

Introduction: Female Belding’s ground squirrel is a species of squirrels that are inhabitants of mountains and are generally found in the mountains of the U.S. region.

Given data: With reference to the Table 53.1, “Life table for Female Belding’s Ground Squirrels”, the average number of female offspring alive and the age of the squirrel are mentioned in the below table.

Age of the squirrel Average number of female offspring alive

0-1 0

1-2 269.64

2-3 237.49

3-4 148.07

4-5 90.65

5-6 39.52

6-7 15.3

7-8 9.65

8-9 7.72

9-10 1.58

Table 53.1

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

In most species containing individuals that are either male or female, the proportion of males and females changes over time. This graph shows shifting male female ratios in a wasp population over 10years. Based on the data shown in the graph, select the statements that describe what happens whenever one sex becomes rare or common Percent male or female 100% 80% 60%- 40% 20% 0 Proportion of male and female wasps in a population over a 10-year period 1 2 3 4 5 6 7 Year Males • Females 8 9 10 When one sex becomes either more rare or more common, parents produce an equal number of sons and daughters. The sex ratio returns to an equal number of males and females. When one sex becomes rare, the other sex becomes common due to random fluctuations in the production of male and female offspring. The fitness of the parents is not affected. When one sex becomes rare, parents producing that sex have higher fitness due to a higher probability of mating success in their offspring. The rare sex…

The following equation is used to calculate the population growth rate, Ro, per generation from a life table. Iy is survival probability from birth to age x and my is fecundity at age x. Ro = Elkm Multiplying ly and my and summing it over all age categories in the life table gives the population growth rate per generation because: Calculating the reproductive output for each age class requires considering the survival probability to that age (a dead individual does not reproduce) and the fecundity at that age by multiplying them with each other. Summing over reproductive output for all age classes gives the total per capita growth rate of the population The fecundity at each age is lower when the survival is higher because of energy constraints. Multiplying probability of survival and fecundity in each age class takes this trade-off into account. Summing over reproductive output for all age classes gives the total per capita growth rate of the population The resulting type of growth…

Number of rotifers 4500+ 4000- 3500 3000- 2500- 2000- 1500- 1000- 500- 0 Key x Rotifers alone (flask X) • Rotifers when living with water fleas (flask Z) 2 0 2 X -+ 4 Yo * X X X 6 8 10 12 14 16 18 Day Analyze the graph and identify some factors that may contribute to the rotifer population leveling off in the absence of water fleas. Explain your answer in 1-2 sentences.