Welcome to Environmental Inquiry: authentic scientific research for high school students  
Header component
Home
For Teachers
For Students
Navigation menu separator
Toxicology
 Bioassays
   Duckweed
Current Location Arrow    Daphnia
   Lettuce Seeds
 Risk
Ecology
 Invasive Species
 Long-term Research
Biodegradation
 Composting
 Bioremediation
 Wastewater
   Treatment
Watersheds
Navigation menu separator
Publications
 Assessing Toxic Risk
 Invasion Ecology
 Decay and Renewal
 Watershed Dynamics
Navigation menu separator
Navigation menu separator
spacer

Daphnia in Various Life Stages

Female with asexual (unfertilized) eggs that will develop into
live embryos before being released from the mother's body:
Image of female daphnia with unfertilized eggs

Female with empty brood chamber:
Image of female daphnia with empty brood chamber

Female with sexual resting eggs encased in tough shells.
These will be released from the female and will hatch when
environmental conditions become favorable:
Image of female daphnia with sexual resting eggs encased in tough shells.

 


spacer 

Copyright 2009 Environmental Inquiry, Cornell University and Penn State University
Click here for a printer-friendly page.