Yes, cockroaches do sleep, if you define it that way. Cockroaches have activity rhythms, i.e. regular times in the day when they are quiet and hide away from the rest of the world as well as wakeful times when they are active, seeking food, water and a mate. The subject of cockroach activity rhythms is well represented in the scientific literature (see my cockroach bibliography). In general, most pest species of cockroaches are active (i.e. awake) during the four hours after lights-out.

Glesne, Cockroaches are fast enough. They have giant fibers in their ventral nerve cord that transmit the sensory info from their cerci, which sense air currents, directly to their thoracic ganglia which control their leg muscles. This is a reflex circuit which does not need any decision by the cockroach brain. It is fast enough to detect the air wave in front of a predator and allows the cockroach to scuttle away, avoiding capture. See similar questions...

Cockroaches are omnivores, like us. For the most part they will eat anything organic. Mostly they eat dead or immobile things. As indicated elesewhere in the FAQ, they rarely bite a human but might nibble on a sore in the middle of the night when an animal is sleeping. They will eat the glue off the back of postage stamps and the glue bindings off the backs of books, traditional glue being derived from animal protein. See similar questions...

Liz, The feet of insects including cockroaches are made up of a brush like pile which reacts with a surface like myriad weak suction cups. The weak forces involve adding together thousands of such individual adhering pillus ends and result in a strong enough force to suspend the body of a fly, a roach or even larger non-insectal critters such as lizards. To step the cockroach must remove the pilli individually in a wave, like ripping off some cellophane or an adhesive bandage. See similar questions...

Cockroaches (and most other insects) have two light receptors, one sensitive in the ultraviolet range and one in the green range. Many insects also have a third light receptor peaking in the blue. Most pest cockroaches are not attracted to light. They are active at night and if anything they might avoid light. However, if you have a patio that is lit you might be asking what type of light should you have in your patio lighting scheme. See similar questions...

Laurie, There is a pest cockroach, Periplaneta australasiae, which is common outdoors in the southern USA. It is commonly called the Australian cockroach. It is found worldwide as a pest and also called the greenhouse cockroach because of its predilection for establishing itself as a pest in the warmth of greenhouses at all latitudes. It is also found in western Australia. I am not sure of the etymology of the common name, 'Australian cockroach'. See similar questions...

http://www.bio.umass.edu/biology/kunkel/rolleston/plate_viii.html ... This is an illustration by GEORGE ROLLESTON published in 1870. Cockroaches shred food with their mouthparts and then swallow it using their salivary glands (e) and salivary reservoir (f) to moisten their food before it enters their crop (d). See similar questions...

Cockroaches, like all insects, breathe through a system of tubes called tracheae, a word similar to the name of the tube leading to our lungs. The tracheae of insects are attached to the spiracles which are small valved openings on the side of each body segment, excluding the head. Thus the cockroach can breathe without its head! The valves open when the CO2 level in the insect rises to an unacceptable level; then the CO2 diffuses out of the tracheae to the outside and fresh oxygen diffuses in. See similar questions...

First, few cockroaches die on their backs in the wild. Natural death of cockroaches probably occurs in the stomach of a bird, bat or other small animal. Second, Cockroaches are not used to living on a polished marble or vinyl floor. They are more used to a ruguous living plane including leaves and sticks and other vegetable debris. See similar questions...

I have been told that cockroaches are more resistant to radiation and in a world nuclear war, only the cockroaches would survive. But I have not seen any publication that discusses it with any credibility. I can give only an opinion of my own. I have irradiated cockroaches and constructed killing curves for them using gamma irradiation. See similar questions...

A4. There are 3 fitted bunk beds in each bedroom and plenty of storage space. Normally there are three to six persons sleeping in each room. See similar questions...

Hotels, ger camps, quaint inns, homestays and camping. On a given trip you may stay in a number of different accommodations. In Mongolia, when ger camps are available we use them, when not we use homestays or vehicle supported camping. In Tibet the camping is quite rugged with several days where we are traveling only with pack horse support. In Uruguay we stay in comfortable hotels and local inns. See similar questions...

These "vectors" have been shown to carry a variety of disease-causing organisms. Some of these organisms are the cause of Salmonellosis, Shigellosis, Leptrospirosis, and a variety of other food-borne illnesses. The problem with rodent bait in a food facility is that rodents may carry the poisonous bait in their mouths and drop the bait throughout the facility, contaminating food, food contact surfaces, and food related items. See similar questions...

A cockroach and a carp are in two different Phyla. The cockroach is an Arthropod and the carp is a Vertebrate. The closest traditional link is that they are both in the Animal Kingdom. See similar questions...

I have never seen a cockroach glow under black light however other pests in more tropical or desert regions, the scorpions, do glow fluorescently. Scorpions are well known for this behavior. Their generally soft cuticle has fluorescent compounds. There is a famous picture on the cover of Science of a fluorescent scorpion. I once took a walk in the evening desert outside Albuquerque NM with a portable black light. See similar questions...

This is clearly an assignment from someone who knows the type of answer they want. I am not sure what the questioner wants. I imagine that the majority of the approximate 3000 cockroach species are largely on their own in the environment. Their support is based on their membership and place in the food web. They are omnivores and thus eat almost any organic matter that does not fight back. They are eaten by many small lizards, amphibians, mammals, and birds. See similar questions...

Read our cockroach guide to learn how to manage these common pests. We also have an article about the least toxic ways to control cockroaches. It sounds like your plant may be suffering from a leaf spot fungi. To treat the problem, you should remove affected leaves and apply a fungicide. Be sure to follow all safety precautions and label recommendations. To find out which fungicides will work best on your plants, contact or visit your county Extension office. See similar questions...

Monosodium glutamate (MSG) is a flavor enhancer that has been manufactured for nearly 100 years. It is often used as a controversial food additive. Technically it is the sodium salt of glutamic acid, a naturally occurring amino acid which is produced in small quantities by the human body. Litehouse chooses not to enhance our all natural products with this controversial ingredient. See similar questions...

If you cannot sleep, it is best to call your doctor. S/he may prescribe something to help you get to sleep. There are a lot of non-habit forming sleep aids. Check in with your doctor from time to time. Some people only need sleep medication for a short period. Others need it longer. Do not self- medicate, if you plan to, make sure you have talked it over with your doctor first. When a person self medicates, it could be detrimental to her or his health. See similar questions...