As a hypothetical example, imagine that you were studying a population of Eastern Collared-Lizards (Crotaphytus collaris). The lizards laid 2000 eggs, of which 1000 were eaten by raccoons and skunks. Eight hundred of the surviving juveniles were eaten by foxes and cats. One hundred and eighty of the young adults died during their first hibernation period. What is the indispensable mortality for each stage? If you want to increase the numbers of reproducing adults, which stage should you focus on?

As a hypothetical example, imagine that you were studying a population of Eastern Collared-Lizards (Crotaphytus collaris). The lizards laid 2000 eggs, of which 1000 were eaten by raccoons and skunks. Eight hundred of the surviving juveniles were eaten by foxes and cats. One hundred and eighty of the young adults died during their first hibernation period. What is the indispensable mortality for each stage? If you want to increase the numbers of reproducing adults, which stage should you focus on?

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter53: Introduction To Ecology: Population Ecology

Section: Chapter Questions

Problem 13TYU

See similar textbooks

Similar questions

Which statement best explains why an understanding of life-history trade-offs is important when examining the fitness of an organism? A. Because individuals may not be producing the maximum number of offspring they possibly can in any particular breeding season. B. Because in any particular breeding season, individuals may need to produce fewer offspring to enhance their own survival. C. Because individuals need to live longer, so they will not produce the maximum number of offspring each season. D. Because when individuals need offspring, they can choose whether to reproduce or not.
You gather a sample of 20 horseshoe crabs, and mark release them. If you return the following week and collect 30 horseshoe crabs and 6 possess marks, how large would you estimate the crab population to be?
You are studying a density - dependent turtle population that has the following relationships for the birth rate b’ and the death rate d’ as a function of population size (N) : b’ = 0.10 + 0.03 N - 0.0005 N ^2 d’ = 0.20 + 0.01 N Plot these functions in the same graph and discuss the population dynamics of the turtle. How does this model differ from the simple logistic model with linear birth and death functions?
In a closed system, a pair of houseflies is provided with a garbage can full of food waste. Which of the following graphs describes the growth of housefly population?
Why might you expect to find a negative correlation between adult body size and population density in fish?
Where are the highest and lowest population densities of humans?
At the population level, what would happen to a population of animals that was not in a dynamic steady state over long time periods?
can you draw the survivalship curve of this data? use digital graphing please day animal survivors 0 50 2 44 4 39 7 26 9 24 11 23 14 23 16 23 18 20 21 20
Which of the following is NOT an example of an r-selected population? Select one: a. Mosquito lifespan is between 42 and 56 days for females and 10 days for males. b. Minnows spawn 16 to 26 times per year, yielding up to 10 000 eggs per female. c. Houseflies are very tolerant of a wide range of environmental conditions and thus have a broad range of habitat. d. Algae are capable of reproducing asexually and sexually to take advantage on the conditions of the environment.
Which statement best describes the recovery of the Mexican wolf population? A. It is experiencing logistic growth because the rate of population growth increases without slowing. B. It is experiencing logistic growth because the rate of population growth increases but slows with time. C. It is experiencing exponential growth because the rate of population growth increases without slowing. D. It is experiencing exponential growth because the rate of population growth increases but slows with time.
You are studying the effect that the commonly used agricultural pesticide "Pestkill" that has been found in bodies of water has on the survival rate of eggs of dragonflies. How will you label your X and Y axes? Check all that apply. Pestkill concentration (mg)" as Y axis label, "percentage of eggs hatched in two weeks" as X axis label "Pestkill" as X axis label, "number of eggs" on Y axis "Pestkill" as Y axis label, "number of eggs" on X axis "Pestkill concentration (mg)" as X axis label, "percentage of eggs hatched in two weeks" as Y axis label
Why are population sizes not constant in biology?