Internal and External Parasites: Internal parasites include roundworms and hookworms. External parasites include mites, lice, fleas, and ticks, which are parasites that live on the skin.
Round worms:
Juveniles migrating through the liver and lungs also will not be killed by conventional wormers. This is why we worm animals twice three weeks apart and then check a fecal specimen three weeks later. This allows all migrating juveniles to reach the intestine where they are easily killed.
Round Worms are found as larva in glider fesces and can only be detected when the fesces is tested.
When a glider comes in contact with the larva by stepping on their fesces or grooming it out of their fur then ingesting larvie (because they clean their feet constantly)the larvie can develope into round worms.
Live round worms are not passed or absorded, but stay and build up. After a time, intestinal blockage and death will occur if not treated.
The hookworm life cycle:
Adult worms live in the lumen of the small intestine, where they attach to the intestinal wall with resultant host blood loss.
Eggs are passed in the stool, and under favorable conditions (moisture, warmth, shade), hatch in 1 to 2 days.
Larvae are released, grow in the feces and/or the soil, and after 5 to 10 days (and two molts) have become filariform (L-3) larvae that are infective.
These infective larvae can survive 3 to 4 weeks in favorable environments.
On contact with the human host, the larvae penetrate the skin and are carried through the veins and the heart to the lungs.
They penetrate into the pulmonary alveolae, ascend the bronchial tree to the pharynx, and are swallowed.
Upon reaching the small intestine, they undergo two more molts yielding fourth stage larvae (L4) and then adult worms.
Five weeks or more are required from invasion by the L3 to oviposition by the adult female.
Most adult worms are eliminated in 1 to 2 years, but longevity records can reach several years.
Some A. duodenale larvae, following penetration of the host skin, can become dormant (in the intestine or muscle!).
In addition, infection by A. duodenale may probably also occur by the oral and transmammary route. (N. americanus, however, requires a transpulmonary migration phase.)
Tape Worms: