Every year, Christmas Island in the Pacific is overrun with over 120 million red

Question

Every year, Christmas Island in the Pacific is overrun with over 120 million red crabs (Gecarcoidea natalis) moving across land between their breeding ground and habitat and towards the water to spawn. Watch the following video: Red Crab Migration on Christmas Island (Links to an external site.)Links to an external site.

Write and explain at least two alternate hypotheses for each of the following questions, and propose research to test your hypothesis. For your proposed research for each section, explain whether your work will be experimental, correlational, or conceptual and be sure to note what the strengths and weaknesses of your approach might be. Make sure that you explain you logic well.

a. What might be the adaptive benefits of everyone migrating at the same time? (think about what happens to individuals that miss the event, or travel separately

Explanation / Answer

Anti predator is main benefit of everyone migrating at the same time, traveling separetly would increase their relative predation risk. Increase in movement efficiency is other benefit, crabs which move faster can motivate others to move fast. Finding a right mate is also easier for female crabs if they migrating at the same time.

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

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