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Copepods
Have you ever explored the trickle of water finding its way to a main waterway. If you
looked closely and examined the under water life in this run off you will notice many small
forms of life. There are fresh water squid, miniature minnows and copepods. Without these
little living critters in our ARCTIC waters and elswhere the ecosystem as we know it
would not be there.
What is a copepod?
A copepod is a crusteacean with a rounded body shaped like a cylinder. Copepods have a
hard outer shell, many legs for swimming and collecting food, a segmented body, and
connected extremities. One type of copepod has many different sections. On one type of
copepod its thorax has an extremity they use for feeding. Another type of copepod have
two long jointed and movable appendages attached to the tail they use to take
phytoplankton by filter feeding.
These marine crustaceans are very different and are the most abundant sea animals in the world's waterways. Copepod live in all types of water. They live in fresh water, salty environments, from caves beneath the salty sea, to the wastes of plants that abandon their leaves as litter on the ground and from fresh water waterways to the silt deposits in the open ocean. They inhabit areas of the tallest mountains to the deep ocean trenches. They also inhabit the cold polar waters to the heated ocean bottom vents. Copepods are freeloaders living on the inside or outside on almost every plant or animal in water. The normal adults Copepod is about 3/4 of an inch long, some adult species shorter and others up to four inches. A common feature of the Copepod is a single eye. Most have the single eye in the larva stage. The name of phytoplankton that grow on the under surface of the ice is algae. Copepods will inhabit this algae. The small crustaceans like copepods eat plants of the Arctic. Ocean lice is a leech that attaches itself to fish and sucks the fish's blood are also Copepods. Copepods means, "oar feet." Copepods are small, shrimp like sea animals that swim and inhabit all water ways throughout the world. Because of their tiny size, free living copepods can only eat small food items like bacteria and plankton. A positive action of Copepods is they eat harmful malaria carrying mosquito larvae aiding in the control of malaria. They use their legs to grasp and capture food like plankton and smaller copepods. After Go To Page: 1 2
The copyright of the article Copepods in Arctic Wildlife is owned by . Permission to republish Copepods in print or online must be granted by the author in writing.
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