Each cockroach has eyes, a mouth, salivary glands, antennae, brain, heart, colon, reproductive system, mid-guts, legs, esophagus, gastric caecea, fat bodies and malpighian tubules. Cockroach eyes contain more than a thousand lenses, allowing them to see multiple things at once.
Cockroaches can see humans, and that is why they tend to run in fear when we are in their line of sight. The eye of the cockroach is like a compound lens, made of over 2,000 mini lenses that are photoreceptors and allow them to see in complete darkness. If for some reason they don't see you, they might feel you first.
Cockroaches have excellent senses that allow them to seek out food, monitor for predators and survive in a generally hostile world filled with animal predators and human enemies. They do not, however, have ears. Instead of hearing, they rely on a variety of other methods to interact with the world around them.
A cockroach has compound eyes located on the lateral sides of the head, each in the form of a dark kidney-shaped structure formed of around 2000 hexagonal units called the ommatidia or simple eyes. Each ommatidium of a compound eye forms a part of the image of an object which is along its optical line.
It is likely to lack key features such as 'distress', 'sadness', and other states that require the synthesis of emotion, memory and cognition. In other words, insects are unlikely to feel pain as we understand it.
As far as entomologists are concerned, insects do not have pain receptors the way vertebrates do. They don't feel 'pain,' but may feel irritation and probably can sense if they are damaged. Even so, they certainly cannot suffer because they don't have emotions.
Another mind-blowing fact about cockroaches is that they are thigmotropism. They like to be touched all over. This is the reason why they love tight spaces in your homes like crevices and fissures. They also love living in clutters because they love the sensation of being touched.
Females have an estimated adult lifespan of 180 days, while males have an adult lifespan of about 160 days. Cockroaches are one of the oldest living insects on the planet. Their life cycle plays an important role in their ability to survive and populate the earth.
Cockroach Bites
They have been recorded to eat human flesh of both the living and the dead, although they are more likely to take a bite of fingernails, eyelashes, feet and hands. The bites may cause irritation, lesions and swelling. Some have suffered from minor wound infections.
Researchers found that cockroaches are immobile a few hours before the night ends, throughout the day, and after an extended period of being active. Scientists view their immobile state as their sleeping pattern. During this time, roaches do not sleep but rather rest.
Electronic cockroach repellent supposedly works by emitting ultrasonic, or very high frequency, sound waves. This noise is supposed to cause response which can confuse, and may even kill, certain pests like cockroaches. These systems plug into wall outlets and can be purchased at any home hardware store.
It's a fact that cockroaches are afraid of humans and other mammals or animals that are bigger than them. They see us as predators and that fear triggers their instinct to scatter away. However, they dislike strong and distinctive scents such as citrus, peppermint, lavender and vinegar.
If you see a cockroach in your home, don't panic! These pests are more common than you might think. In fact, cockroaches are one of the most common household pests in the United States. These indoor pests are tough to get rid of once they get inside your home and can cause allergies and carry diseases.
Cockroaches hate red light and will always move away when they are in its presence. In contrast, they are actually attracted to the yellow color and will gravitate towards the yellow light but always run away from the red light.
This is a defense mechanism. They chase you to startle you and escape from that situation. They protect themselves in this way since they don't have claws or fangs to defend themselves. They are aware that we are scared of them, and they use that to their advantage.
It might be difficult to believe, but the cockroach might be the “cleanest” species of insect.
If a roach crawls on you while you're sleeping, it may attempt to feed on dead skin in your eyelashes, eyebrows, or around your lips. While doing this, it could bite you. If it does, you're likely to know it, as dirty cockroaches immediately introduce bacteria into the wounds they cause.
Generally, cockroaches don't like the cold one bit. They are cold-blooded arthropods that don't survive very well in either extremely cold or hot circumstances. They're always at whatever temperature their environment is and generally slow down with cooler temperatures.
German cockroach: A German cockroach lifespan is about three months. They will repeatedly reproduce during that time, producing a new generation around every 60 days. This can lead to thousands of ready-to-mate cockroaches, and ultimately, a population growth of millions within a year.
When a roach is dying, its high center of gravity pulls its back towards the floor. Its rounded back and weakened muscles prevent it from righting itself, especially on smooth surfaces, which results in it flipping. This is the simple reach why cockroaches die on their backs.
It is possible to completely get rid of roaches but most homeowners need the help of a professional to make this a reality. There are a number of seemingly tale tales surrounding the resilience of roaches.
The World Health Organisation (WHO) has revealed that crushing a cockroach releases a harmful bacterium into the environment. The bacteria can cause asthma attacks, as well as allergies when inhaled. It may sound rare but it is actually more common that we realise.
These hissing roach noises may also be produced if the insect feels threatened or is handled by a human. Now that you know why some roaches do what they do – cockroaches make noise during a variety of social interactions – you should learn how to stop it.
However, cockroaches have a strong exoskeleton, so if one managed to evade the fire quickly before that shell cracked, then it might survive. That said, prolonged exposure to temperatures greater than 120 degrees Fahrenheit will kill a cockroach… so setting one on fire definitely will.