Below are data (or a population of finches. Using the data, answer the following

Question

Below are data (or a population of finches. Using the data, answer the following questions. Feel free to set up your life table in Excel. If you want partial credit for errors, you will need to show me sample calculations. Other than calculations, figures, and new data, type your answers to the following questions. Calculate the net reproductive rate (R_o) for the population and reproductive value (V_s) for each age class. What do these values tell you about the population and age classes within the population? Based on what you might know about finches and the data above, would you consider reproductive cost (RC) to be high or low In this spades? Explain the reasoning behind your choice.

Explanation / Answer

Given below is the reproductive rate (R0) and reproductive value (Vx) for the given finches:

Survivorship (lx) is calculated by dividing the number of organisms survive current age group by the number of organisms present the previous age group. For example, in the given table, the survivorship of age 1 is calculated by dividing 91 with 210.

* The reproductive value is assumed to be 1 at birth. Reproductive value of remaining age groups is calculated by diving 1 with the lx of the given age groups.

* The net reproductive rate is sum of reproductive rates of all the age groups together. The value 1.85 indicates that each organism is able to produce 1.86 successive offspring, and the population will grow exponentially.

Age (x) Number alive (nx) Fecudnity (mx) Survivorship (lx) lx mx Vx 0 210 0 0 0 0 1 91 0.02 0.43 0.0086 2.35 2 78 0.211 0.85 0.17935 1.17 3 70 0.278 0.89 0.24742 1.12 4 65 0.308 0.93 0.28644 1.07 5 62 0.4 0.95 0.38 1.05 6 42 0.476 0.68 0.32368 1.5 7 23 0.358 0.55 0.1969 1.8 8 15 0.247 0.65 0.16055 1.54 9 14 0.059 0.93 0.05487 1.07 10 11 0.024 0.78 0.01872 1.28 11 10 0.009 0.9 0.0081 1.1 12 4 0.001 0.4 0.0004 2.5 13 3 0 0.75 0 1.3 14 1 0 0.33 0 3.03 ?lx mx = 1.86503

Related Questions

Navigate

• Browse (All)
• Browse B
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.