Seminole Crop E News

Agricultural News for Farmers and Agribusiness in SW Georgia

Question of the Week – Dragonfly

Posted by romeethredge on November 22, 2013

Last week I asked about an insect and it was the dragonfly.

In their immature larval stage, which can last up to two years, dragonflies live in the water and are feared hunters of tadpoles, mosquitoes, tiny fish, other insect larvae and even each  other.

At the end of its larval stage, the dragonfly crawls out of the water,  then its exoskeleton cracks open and releases the insect’s abdomen, which had  been packed in like a telescope. Its four wings come out, and they dry and  harden over the next several hours to days.

 Dragonflies are expert fliers. They can fly straight up and down, hover  like a helicopter and even mate mid-air. Dragonflies can flap or beat their two pairs of wings independently. This means the front wings can be going down while the back ones are coming up. If they can’t fly, they’ll starve  because they only eat prey they catch while flying. Dragonflies catch their insect prey by grabbing it with their feet.

Some adult dragonflies live for only a few weeks while others live up to  a year.

 Nearly all of the dragonfly’s head is eye, so they have incredible  vision that encompasses almost every angle except right behind them.

 Dragonflies, which eat insects, are a great control on the  mosquito population. A single dragonfly can eat 30 to hundreds of mosquitoes per  day.

Most of this dragonfly information is from the Smithsonian institute.

 

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This week I have a photo I took of a field with rye planted in  7.5 inch rows but every 5th row is skipped, why?

 

 

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2 Responses to “Question of the Week – Dragonfly”

  1. Tim Coolong said

    to run a strip tiller through it easier.

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