biology

2. Muzamil Mustafa
Roll.no#29
5th Semester Entomology

3. Population Estimation
“Population estimation involves determining of individuals
in a given area or a specific demographic group”.

4. Pest Management: Accurate estimation of insect population is
essential for effective pest management and mitigate economic
losses.
Disease Vector Control: Insects such as mosquitoes can act as
disease vectors. Estimating their population is crucial for the
implementing effective control measures.
Biodiversity Studies: Population estimates contribute to broader
biodiversity studies help scientists to monitor changes in insect
diversity overtime and space.

5. Absolute Estimates
Relative Estimates
Population Indices

6. Census: A through and systematic collection of data about a
specific population typically including data about individuals.
Mark and Recapture: It is a technique used to estimate population
size. Where the objects are captured , marked, released and then
recaptured after a period of time.
Quadrate method: Quadrates can be used for sampling .Randomly
place the quadrate over an area and use it to sample.

7. Mark and Recapture Quadrate method

8. Shake and Beating: Catch Per Unit:

9. Trapping:
Light Trap Sticky Trap
Pheromone Trap

10. 1. Insect Products:

11. Plant Damage
Direct Damage: Indirect Damage:

12. Data Quality: Inaccuracies in data collection methods
can unreliable population estimation.
Migration and Mobility: Frequent movement of specie make
it challenging to track and estimate population accurately.
Sampling Bias: If sample used for estimation is not
representative it can introduce bias into to results.

13. References:
1. United Nation.(2020).World Population Prospects.
2. E .O .Wilson “The Importance of Biodiversity” in Biodiversity
1988.
3. U .S. Census Bureau.(2020).Census.