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Troglomorphism is the morphological adaptation of an animal to living in the constant darkness of caves, characterised by features such as loss of pigment, reduced eyesight or blindness, and frequently with attenuated bodies or appendages.
A troglobite (or, formally, troglobiont) is an animal species, or population of a species, strictly bound to underground habitats, such as caves.These are separate from species that mainly live in above-ground habitats but are also able to live underground (eutroglophiles), and species that are only cave visitors (subtroglophiles and trogloxenes). [1]
Many insect troglobites are Orthopteran, Collembolan, or Blattodean, for example, and given the nature of their open-air ancestral species, it would be in no way surprising that where a cave becomes available, it soon is invaded by opportunistic troglophiles that may be widely distributed and may evolve similarly in separate caves in different ...
Subterranean fauna is found worldwide and includes representatives of many animal groups, mostly arthropods and other invertebrates.However, there is a number of vertebrates (such as cavefishes and cave salamanders), although they are less common.
Aquatic troglobites (or stygobites), such as the endangered Alabama cave shrimp, live in bodies of water found in caves and get nutrients from detritus washed into their caves and from the feces of bats and other cave inhabitants. Other aquatic troglobites include cave fish, and cave salamanders such as the olm and the Texas blind salamander.
Tooth Cave pseudoscorpions fall under the category of troglobites, which are species that spend their entire lives in caves. Some distinct features of troglobites include attenuated palps and long, slender appendages. [5] Tooth Cave pseudoscorpions are large for cave-dwelling species in this area, measuring about 4 mm (0.15 in) in length.
Texella reddelli, the Bee Creek cave harvestman, [3] is a rare species of troglobitic harvestman that was added to the United States endangered species list in 1988, at the same time as six other species native to the karst ecosystem in Travis County and Williamson County, Texas, USA.
Troglobites prefer to inhabit the dark zone of the cave where the humidity and temperature are relatively constant. High temperatures nearly 100% humidity is required for most troglobites. There are some 7,700 species of troglobites, but this is probably only a small portion of the population because most of them have not been discovered.