Tuesday, September 16, 2014

Cave Life



Trogloxenes 
Trogloxenes are also known as “cave visitors”, they spend time inside of them, but need to leave the cave in order to find food or just can not exclusively live inside of them
Ex.) bats, raccoons, bears, and rats

                                    troglophiles

Troglophiles are able to live out their entire lives in caves, but can also survive outside of them
Ex.) Beetles, worms, crickets, crayfish, and salamanders

                                       troglobites
Troglobites are animals that live entirely in the darkest parts of the cave
Ex.) Cave physa, cave snails, cave worms, cave spiders, etc.

additional notes: 
-Descended from above ground species that migrated into caves
-Adapted to the underground
-REGRESSIVE EVOLUTION
-some lost features such as eyes and skin pigmentation because they aren’t necessary for life in complete darkness
-they have evolved metabolisms because nutrients are so hard to come by, they work more efficiently on less
-good for studying abnormal eye development







Caves are difficult to research due to their unique conditions (constant darkness and humidity)
Scientists have to squeeze through tight spaces to get far enough into the caves
Cave biologists are often the first humans to lay eyes on the creatures that they find in deep parts of the cave
The federal cave resource protection act of 1988 has made it a criminal offense to destroy of disturb cave life along with the caves themselves
Having humans frequently come in and out of the caves is very dangerous and can collapse the entire bionetwork


Sources


"Life in Caves." The Virtual Cave:. N.p., n.d. Web. 13 Sept. 2014.
Ronca, Debra. HowStuffWorks. HowStuffWorks.com, n.d. Web. 13 Sept. 2014.




 
 



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