Corn Earworms. Presentation By:. Laramie Kettler. Dexter Knox. Brendan Mills. Charlie Barnhill. From Gatesville Intermediate Gatesville, Texas. The corn earworm is known as the tomato fruit worm or cotton bollworm. Pictures 1 & 2 are from http://ow.csisd.org/usda/cornearjpg.
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Pictures 1 & 2 are from http://ow.csisd.org/usda/cornearjpg
The life of a corn earworm starts with an egg.
The larvae follow the silk channel to the tip of the developing ear where they feed on kernels and grow.
Pictures 1 and 3 from http://firstep.coe.tamu.edu.
Picture Number 2 from Http://ow.csisd.org/usda/cornear.jpg
What do earworms eat?
The worms liked the corn, apple, and tomato the best.
Photo from: Http://ow.csisd.org/usda/cornear.jpg.
Picture from http://firstep.coe.tamu.edu
ObservationsThe students noticed that the worms at this stage wanted to fall off and burrow. They had a hard time keeping the worm on the plant.
It took 21 days for our corn earworms to start metamorphosis.
Hold the moth and gently squeeze the abdomen. The females will have a brownish small part pop out. They are usually less active and have shorter, fatter abdomens than the males. Females are usually darker.
Drawing from http://ow.csisd.org/usda/procedur.htm