BP 21 Yusra Azhar
Location of Collection
Beaver Pond on Georgia Gwinnett College campus
Date of Collection
Shannon-Wiener Index of Biodiversity
Not applicable for this project.
Distinguishing Morphological Features of Order
- Disc shaped body
- Small size (~0.2-18 mm)
- Single black central eye
- Small mouth part
- Carapace covers body and legs but not the head
- 4-6 pairs of thoracic legs
- Large appendages
- Most pigmented part is usually the eggs
- Short antennules used as sensory organs
North and South America, Europe and Australia.
Asexual Reproduction: (Parthenogenesis) Without fertilization, all eggs develop into female daphnia
- Egg (Unfertilized egg mature into larvae)
- Juvenile (Young hatch quickly and resemble adults)
- Adult (Quick maturation and able to reproduce)
Sexual Reproduction: (Bisexual)
- Eggs wrapped in epiphium (Resting eggs encased in a structure on the back of female, will stay in eggs during unfavorable conditions)
- Eggs hatch after diapause
- Embryo (After males fertilize resting eggs)
- Juvenile (Fully developed neonate, undergo 4 moltings while size increases)
- Adult (Sexually mature)
Female D. pulex have larger traits in respect to carapace and antennules than males.
What it eats
Feeds on planktonic algae, diatoms, bacteria and cynobacteria.
Found in a broad range of aquatic habitats, preferably open waters and fresh waters.
D. pulex has unique adaptability skills that are result of chemicals given off by predators or environmental distress. These can be used to test water quality and measure environmental changes.
Economic, Agricultural, & Human Health Importance
- D. pulex are beneficial to aquatic environments: Important to aquatic food webs because they serve as major food sources to various fish.
- Clear bodies of water from debris: Convert phytoplankton and decay matter into usable forms in freshwater ecosystem.
- Useful in scientific experiments because they are cheap, easily accessible and maintained, and also have fast maturation rate.
- Science models for environmental genomics (Interaction between environment and genes). They can aid in management of water resources by protecting rhem from chemicals and environment pollutants that can help secure human health.
PCR product: Gel Pictures
- forward (CO1)
- reverse (CO1)