Red Wigglers (Eisenia foetida) are from the same family as the common
earthworm or Night Crawlers (Lumbricus terrestris) you see on your driveway
after a rain. An important difference, and the main reason Red Wigglers
are preferred vermiculture specialists, is that Night Crawlers like
to draw food down into burrows (up to 6 feet deep), whereas Red Wigglers
prefer to eat on the go. Being top feeders, Red Wigglers scavenge for
food just 6" - 12" below the surface, making them perfect for a composting
environment.
No bones about it!
Did you know that worms do not have any bones. Their bodies are made
up of hundreds of small rings called 'Segments'. They move by manipulating
each segment with tiny circular muscles beneath their skin. They secrete
a slippery fluid that let's them move easily through the earth.
No eyes, no ears, but lots of heart!
Worms do not have eyes or ears but are very sensitive to light. They
generally avoid bright sunshine. Each worm has 5 hearts, so you gotta
love them! Their bodies are sensitive to movement and vibrations. It
is hard to sneak up on a worm. Worms usually know when people are near
simply by the vibrations they make by walking.
Cold-blooded
Worms are cold-blooded creatures, their body temperature is determined
by their surroundings. Red Wigglers are most active when the temperature
is kept between 16° - 28°C (60° - 80°F). They become sluggish and eat
less when the temperature falls out of this range.
Worm sex
Worms are Hermaphrodites. That means that each worm has both female
and male sex organs. You may have noticed a swollen area about 1/3 the
way down the length of some worms. This area is called the Clitellum.
The presence of this section signifies that the worm is sexually mature.
Worms will join together tightly to exchange sperm. Each worm will collect
sperm from a partner and then store it for a few days. This time lag
is to ensure that worm's own sperm dies off before fertilization takes
place. Eventually, the sticky substance around the Clitellum
will harden and form into a cocoon. The worm will back out, sliding
the cocoon over its head. Eggs and sperm are deposited in the cocoon
as it passes along the worm's body. The cocoons (or egg sacs) are deposited
in the soil to incubate. Each cocoon can contain up to 20 fertilized
eggs, the average is 2 - 6. After around 3 weeks the cocoon will hatch
and the baby worms will emerge, hungry and ready to eat.