BP 11 Brian Seeblack
Location of collection
Beaver Pond on Georgia Gwinnett College campus
Date of collection
Shannon-Wiener Index of Biodiversity
No Picture to display of exoskeleton
Distinguishing morphological features of Order
- Eyes are large occupying most of the head.
- Abdomen is long and slender.
- Antennae is very short and bristle like.
- Tarsi is segmented 3 times.
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods) Class Insecta (Insects) Order Odonata (Dragonflies and Damselflies)
Found nearly worldwide.
The Egg Stage
Eggs are layer on a plant in the water, or if she can’t find a suitable plant she will just drop them into the water.
The Nymph Stage
Once the eggs hatch, the life cycle of a larva begins as a nymph that can take up to four years to complete and if the nymph cycle is completed in the beginning of the wintertime, it will remain in the water until spring when it is warm enough to come out. (2) The Adult Dragonfly Stage
Once the nymph is fully grown it will complete the metamorphosis into a adult by crawling out of the water up the stem of a plant. The nymph will shed its skin onto the stem of the plant and will then be a young dragonfly.
Once the adult leaves the exuvia it is full grown. Adults only live about two months (2)
A male and a female will mate while they are flying in the air.
What it Eats
Larvae, which live in water, will eat almost any living thing that is smaller than them. Large larvae sometimes eat small fish or fry in the water, but usually they only eat bloodworms or other aquatic insect larvae.
Feeds on other flying insects such as mosquitoes. They may also catch and eat honey bees -- then they are regarded as pests by the beekeepers. (2)
Waters that are calm.
Nymphs live in the water while they grow and develop into dragonflies.
- marshy areas
- calmer backwaters of rivers
- terrestrial surface encountered from hatching, e.g. stems of higher aquatic plants or even a tree trunk.
- Eventually the adults will fly back to an aquatic habitat. The adult male will then usually patrol a stretch of pond or stream looking for a female.
Economic/agricultural/human health importance and Ecological Importance
Larval/nymphal stage/Adult stage
Since they are low on the food chain from other predators, the Odonata populations are used to help determine the health of the aquatic ecosystems. Changes in the health of these systems can be more quickly identified by animals that are lower on the food chain than larger mammals changes in populations. United States' national parks are considering population counts of Odonata species when devising new management techniques. (3)
PCR product= GEL
E = Empty Well
+ = Positive Control
- = Negative Control
L = Ladder
11 = BP 11
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1. Order Odonata - Dragonflies and Damselflies. (2004, February 16). Retrieved November 28, 2012, from BugGuide: http://bugguide.net/node/view/77
2. The Dragonfly Life Cycle. (n.d.). Retrieved November 28, 2012, from Dragonfly Site: http://www.dragonfly-site.com/dragonfly-life-cycle.html
3. Odonata (dragonflies and damselflies). (2007). Retrieved November 28, 2012, from Water Action Volunteers: http://watermonitoring.uwex.edu/wav/monitoring/coordinator/ecology/odonata.html