Monday, September 19, 2016

Mosquito larve/ Microcystis/Dictyosphaerium

Aedes Aegypti:Is attracted to ammonia ,carbon dioxide, lactic acid and octenol. It is known for spreading the yellow fever. It comes from same family as the one spreading zika virus and could potentially become a carrier for zika as well according to new research. They feed mostly at dusk and dawn and in cloudy weather. Only females bite because they need it to develop eggs. They lay the eggs in water filled with fatty acids and particular bacteria that they find appealing. The larvae spend their time in water developing into an adult when startled they dart down for protection. The long thick part seen above actually is what keeps it floating so it can get oxygen. One thing that everyone can do to help the situation is to not leave water stagnant in fountains, flower pots,or buckets, basically anything that holds water that can fill with bacteria and decaying organic matter.

Microcystis:Seen in two spots in this photo is a freshwater cyanobacteria. They are usually found in groups and posses gas filled vesicles. The groups are bound together by thick mucus like substance of many sugars. Things like xylose ,glucose, fructose,galactose to name just a few . They appear brown on a compound light microscope due to the gas they are filled with. They consume massive amounts of nitrogen and phosphorus and it's ability to keep buoyant is part of what makes them so successful at out competing phytoplankton. Microcystis is a neurotoxin which kills brain cells. ( the right hand side close to the edge of the photo and close to the face)

Dictyosphaerium: Is a green water algae in freshwater. It takes up a lot of space in this photo. It's spread out by little strands of a sheath like material and has little tiny dots connected to it.
Oscillatoria:Is a filamentous cyanobacteria. It is named after its oscillating movements which can move it's filaments toward the light. They reproduce by breaking into parts called hormogonia. Each filament has a trichome which moves like a pendulum. It survives using photosynthesis and is a form of algae. It is seen in this photograph near the tail of the mosquito larvae.

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