The firebrat (''Thermobia domestica'') is a small hexapod (typically 1–1.5 cm), in the order

Zygentoma Zygentoma are an order in the class Insecta, and consist of about 550 known species. The Zygentoma include the so-called silverfish or fishmoths, and the firebrats. A conspicuous feature of the order are the three long caudal filaments. The t ...

Habitat

Firebrats prefer higher temperatures and require some

humidity Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye. Humidity indicates the likelihood for precipitation, dew, or fog to be present. Humidity dep ...

, and can be found in

bakeries A bakery is an establishment that produces and sells flour-based food baked in an oven such as bread, cookies, cakes, donuts, pastries, and pies. Some retail bakeries are also categorized as cafés, serving coffee and tea to customers who w ...

and near boilers or

furnaces A furnace is a structure in which heat is produced with the help of combustion. Furnace may also refer to: Appliances Buildings * Furnace (central heating): a furnace , or a heater or boiler , used to generate heat for buildings * Boiler, used t ...

. They feed on a wide variety of carbohydrates and starches that are also protein sources such as dog food, flour and

book binding Bookbinding is the process of physically assembling a book of codex format from an ordered stack of ''signatures'', sheets of paper folded together into sections that are bound, along one edge, with a thick needle and strong thread. Cheaper, b ...

s. They are distributed throughout most parts of the world and are normally found outdoors under rocks, leaf litter, and in similar environments, but are also often found indoors where they are considered pests. They do not cause major damage, but they can contaminate food, damage paper goods, and stain clothing. Otherwise they are mostly harmless.

Breeding

At 1.5 to 4.5 months of age the female firebrat begins laying

eggs Humans and human ancestors have scavenged and eaten animal eggs for millions of years. Humans in Southeast Asia had domesticated chickens and harvested their eggs for food by 1,500 BCE. The most widely consumed eggs are those of fowl, especial ...

if the temperature is right (32–41 °C or 90–106 °F). It may lay up to 6000 eggs in a lifetime of about 3–5 years. After incubation (12–13 days), the nymphs hatch. They may reach maturity in as little as 2–4 months, resulting in several generations each year.

Meiosis

The sequential changes occurring during the prophase I stage of

meiosis Meiosis (; , since it is a reductional division) is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately r ...

in ''T. domestica''

ovaries The ovary is an organ in the female reproductive system that produces an ovum. When released, this travels down the fallopian tube into the uterus, where it may become fertilized by a sperm. There is an ovary () found on each side of the body. T ...

have been described in detail.Tworzydlo W, Marek M, Kisiel E, Bilinski SM. Meiosis, Balbiani body and early asymmetry of Thermobia oocyte. Protoplasma. 2017 Mar;254(2):649-655. doi: 10.1007/s00709-016-0978-7. Epub 2016 May 14. PMID: 27180195; PMCID: PMC5309285

References

* * * * *

External links

Silverfish and Firebrats, Kansas State University ''(via archive.org)''
{{Taxonbar, from=Q1069416 Lepismatidae Insects described in 1873