An entomologist tracks a bee colony that starts with 12,000 bees. Each day, 4% of the bees die, but 800 new bees are born. What is the bee population after 3 days? - Parker Core Knowledge

Understanding the Context

Monitoring a Thriving Bee Colony: A Daily Population Analysis

In entomology, understanding colony dynamics is crucial for preserving pollinator health and predicting ecosystem impacts. A fascinating real-world scenario involves tracking a bee colony beginning with 12,000 individuals, facing daily challenges such as a 4% mortality rate, while 800 new bees hatch each day. Using basic math and population modeling, entomologists analyzing this population can determine how colony size evolves—key data for conservation and beekeeping practices.

Day 0: Starting Population

The colony initially consists of 12,000 bees. Each day, two forces shape the numbers: natural attrition and reproduction.

Daily Dynamics:

• 4% loss: Calculated as 0.04 × current population
  
• Births: 800 new bees added daily

Key Insights

Let’s simulate the population over 3 days step-by-step.

Day 1:

• Starting population: 12,000
  
• Bees lost: 0.04 × 12,000 = 480 bees
  
• Remaining bees: 12,000 – 480 = 11,520
  
• New bees born: +800
  
• Total after Day 1: 11,520 + 800 = 12,320

Day 2:

• Starting population: 12,320
  
• Bees lost: 0.04 × 12,320 = 492.8 ≈ 493 (rounded to nearest whole bee)
  
• Remaining bees: 12,320 – 493 = 11,827
  
• New bees born: +800
  
• Total after Day 2: 11,827 + 800 = 12,627

Day 3:

• Starting population: 12,627
  
• Bees lost: 0.04 × 12,627 = 505.08 ≈ 505
  
• Remaining bees: 12,627 – 505 = 12,122
  
• New bees born: +800
  
• Total after Day 3: 12,122 + 800 = 12,922

Final Thoughts

Final Population Summary

After 3 days, the monitored bee colony grows slightly to approximately 12,922 bees despite daily losses, demonstrating the balance between natural mortality and reproduction—an insight entomologists rely on to monitor colony resilience.

Conclusion: Why Track Bee Populations?

Precise population tracking helps entomologists understand colony health, detect threats early, and guide sustainable beekeeping. Using simple math to model daily changes offers clarity on how environmental pressures and reproduction rates shape bee populations—critical for preserving these essential pollinators.

Keywords: bee colony population, entomologist tracking, bee mortality rate, bee birth rates, honeybee population dynamics, colony health modeling, insect lifecycle analysis