If you want to have a pet, you will go to the pet shop and pick one of the animals available there, and of course ask the pet expert how to take care of the pet you choose. How if the pet you want doesn't available at any pet shops, let's say ... leech? Haha... alright, then you need to finish this article to make sure yourself capable of taking good care of your new leech pet.
Any living creatures will have these activities : breathing, sensing, feeding, and reproduction.
1. Breathing or respiration
Respiration takes place through the body wall, and a slow undulating movement observed in some leeches is said to assist gaseous exchange. Aquatic leeches tend to move to the surface when they find themselves in water of low oxygen content. As a fall in atmospheric pressure results in a small decrease in dissolved oxygen concentrations, rising leeches in a jar of water provided nineteenth century weather forecasters with a simple way of predicting bad weather.
2. Sensing through sense organs
Sensory organs on the head and body surface enable a leech to detect changes in light intensity, temperature, and vibration. Chemical receptors on the head provide a sense of smell and there may be one or more pairs of eyes. The number of eyes and their arrangement can be of some use in Identification, however to properly identify a leech, dissection is required. The Rhyncobdellids are capable of dramatic color changes, and although not an attempt at camouflage, the significance of this behavior is unknown.
3. Feeding or hunting for foods
Most leeches are sanguivorous, that is they feed as blood sucking parasites on preferred hosts. If the preferred food is not available most leeches will feed on other classes of host. Some feed on the blood of humans and other mammals, while others parasites fish, frogs, turtles or birds. Some leeches will even take a meal from other sanguivorous leeches which may die after the attack. Sanguivorous leeches can ingest several times their own weight in blood at one meal. After feeding the leech retires to a dark spot to digest its meal. Digestion is slow and this enables the leech to survive during very long fasting periods (up to several months).
A hungry leech is very responsive to light and mechanical stimuli. It tends to change position frequently, and explore by head movement and body waving. It also assumes an alert posture, extending to full length and remaining motionless. This is thought to maximize the function of the sensory structures in the skin. In response to disturbances by an approaching host, the leech will commence "inchworm crawling", continuing in a trial and error way until the anterior sucker touches the host and attaches. Aquatic leeches are more likely to display this "pursuit" behavior, while common land leeches often accidentally attach to a host.
4. Reproduction
As hermaphrodites, leeches have both male and female sex organs. Like the earthworms they also have a clitellum, a region of thickened skin which is only obvious during the reproductive period. Mating involves the intertwining of bodies where each deposits sperm in the others' clitellar area. Rhyncobdellids have no penis but produce sharp packages of sperm which are forced through the body wall. The sperm then make their way to the ovaries where fertilization takes place. The clitellum secretes a tough gelatinous cocoon which contains nutrients, and it is in this that the eggs are deposited. The leech shrugs itself free of the cocoon, sealing it as it passes over the head. The cocoon is either buried or attached to a rock, log or leaf and dries to a foamy crust. After several weeks or months, the young emerge as miniature adults. Studies show that the cocoons are capable of surviving the digestive system of a duck. Leeches die after one or two bouts of reproduction.
Since you've known a lot about leech daily activities, you can go buy leeches and start petting some. Have fun!
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