Questions and Answers
Hurricanes have no impact on dolphin populations.
False
Hurricane Katrina resulted in an increase in the reproductive activity of female dolphins.
True
The shrimping and crabbing industries were unaffected by Hurricane Katrina.
False
Dolphins tend to avoid boats when they are present.
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After Hurricane Katrina, the number of boats in the water increased significantly.
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Study Notes
Impact of Hurricanes on Dolphins
- Hurricanes typically lead to loss of life, property damage, and economic hardship, as seen during Hurricane Katrina in 2005.
- Interestingly, hurricanes are linked to an increase in dolphin populations, particularly in newborns.
Factors Contributing to Increased Dolphin Calves
- After losing a calf, female dolphins can quickly become pregnant again, allowing greater reproductive opportunities.
- If many calves die during a hurricane, more females become reproductively active in the following year, potentially increasing dolphin births.
Human Influence on Dolphin Behavior
- Hurricane Katrina devastated local seafood industries, damaging around 87% of commercial fishing vessels in Mississippi.
- The resulting 15% decrease in seafood brought to shore led to fewer boats in the water.
- Reduced boat traffic allowed dolphins to spend more time feeding without the need to avoid boats, contributing to higher survival rates for calves.
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Description
This quiz explores the intriguing relationship between hurricanes and dolphin populations, particularly following events like Hurricane Katrina. It discusses how environmental stressors can lead to increased reproductive rates among dolphins and how human activity affects their behavior and survival. Test your knowledge on these fascinating marine mammals and their resilience in the face of natural disasters.
