Question:
Most commonly used method for assessing rodent population is __________.
Most commonly used method for assessing rodent population is __________.
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The simple Lincoln-Petersen index formula for the Capture-Mark-Recapture technique is:
\[ N = \frac{M \times C}{R} \]
where \(N\) is the estimated population size, \(M\) is the number marked in the first session, \(C\) is the total captured in the second session, and \(R\) is the number of marked recaptures.
Updated On: Jul 28, 2026
- Line transect count
- Capture-Mark-Recapture technique
- Minimum number alive method
- Point sampling
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Estimating animal population size and density is a fundamental task in wildlife magement and ecology.
Because small mammals like rodents are elusive and nocturl, direct counting methods are generally impractical.
Step 2: Detailed Explation:
Different population estimation techniques are suited for different taxa:
• Line transect count: Most suitable for large, visible herbivores or birds in open habitats.
• Capture-Mark-Recapture (CMR) technique: This is the standard method for small mammals, particularly rodents. Animals are captured using live traps, marked with a non-harmful identifier, and released. After a period, traps are set again, and the ratio of marked to unmarked individuals in the second capture is used to estimate the total population using the Lincoln-Petersen index.
• Minimum number alive method: A simple count used when capture probability is very high, but it is less statistically robust than CMR.
• Point sampling: Used primarily for vegetation or sedentary organisms.
Thus, the Capture-Mark-Recapture technique is the most common and reliable method for assessing rodent populations.
Step 3: Fil Answer:
The correct option is (B).
Estimating animal population size and density is a fundamental task in wildlife magement and ecology.
Because small mammals like rodents are elusive and nocturl, direct counting methods are generally impractical.
Step 2: Detailed Explation:
Different population estimation techniques are suited for different taxa:
• Line transect count: Most suitable for large, visible herbivores or birds in open habitats.
• Capture-Mark-Recapture (CMR) technique: This is the standard method for small mammals, particularly rodents. Animals are captured using live traps, marked with a non-harmful identifier, and released. After a period, traps are set again, and the ratio of marked to unmarked individuals in the second capture is used to estimate the total population using the Lincoln-Petersen index.
• Minimum number alive method: A simple count used when capture probability is very high, but it is less statistically robust than CMR.
• Point sampling: Used primarily for vegetation or sedentary organisms.
Thus, the Capture-Mark-Recapture technique is the most common and reliable method for assessing rodent populations.
Step 3: Fil Answer:
The correct option is (B).
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