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U.S. Fish & Wildlife Service Madison Cave Isopod Antrolana lira

Description Cave isopod suggests that it has a The Madison Cave isopod is an eyeless, lengthy life span with a low rate of unpigmented, freshwater crustacean. reproduction. It is not known how It belongs to a family that consists this species reproduces. Its feeding of mostly marine species and a small habitats are also unknown, however, it number of freshwater species. The is believed to be carnivorous. species is the only member of its genus and is the only freshwater cirolanid Conservation isopod north of Texas. Its body is The Madison Cave Isopod was flattened and bears seven pairs of long federally listed as a threatened species walking legs. The first pair of legs on November 3, 1982. Agriculture are modified as grasping structures. and encroaching industrial and urban It has a pair of short antennae and a development threaten the quality of M. Drummond pair of long antennae. Males reach a groundwater habitat and thus the length of 0.6 inches; females reach a survival of this species. Virginia Department of Game and length of 0.7 inches. While most Inland Fisheries cave isopods spend the majority of What you can do to help P.O. Box 11104 their time walking along the bottoms If you reside on property that borders Richmond, Virginia 23230 of and pools, Antrolana lira a or other waterway within the 804/367 1000 spends much of its time swimming range of this isopod, avoid using freely through flooded caves formed chemicals or fertilizers. To help References in ancient . control erosion and reduce run-off, Orndorff, W.D., and C.S. Hobson. maintain a buffer of natural 2007. Status Survey for the Madison Distribution and Habitat vegetation along waterbodies and Cave Isopod (Antrolana lira) in The Madison Cave isopod is found in . Sinkholes are natural Virginia, 2005-2007. Natural flooded limestone caves beneath the depressions in the land surface that Heritage Technical Report 07-11. Great of Virginia and West are formed by the collapse of an Virginia Department of Conservation Virginia where it swims freely underground cavern roof. Never and Recreation, Division of Natural through -saturated waters of place anything into sinkholes because Heritage, Richmond, Virginia. 17pp. deep . Recent harmful materials can end up in discoveries in caves and have underground streams. Install fencing U.S. Fish and Wi ldlife Service. extended the range of the species 200 to prevent livestock from entering 1996. Madison Cave isopod miles. The range of the isopod is streams, which will reduce siltation (Antrolana lira) recovery plan. now known from a 15 mile wide belt and input of waste products. Properly Hadley, Massachusetts. stretching from Lexington VA to dispose of household wastes, Charles Town, WV. There are including used motor oil, at recycling U.S. Fish and Wildlife Service documented population centers in the facilities and permitted landfills. Virginia Field Office Waynesboro-Grottoes area (Augusta Have your inspected 6669 Short Lane County, VA), the Harrisonburg area regularly by a licensed professional. Gloucester, Virginia 23061 (Rockingham County, VA), and the By following these land use practices, 804/693 6694 valley of the main stem of the you are not only protecting the habitat http://www.fws.gov/northeast/virgi Shenandoah ( and of cave creatures but also protecting niafield/ Clarke counties, VA, and Jefferson the quality of your drinking water. County, WV). Federal Relay Service To find out more about the Madison for the deaf and hard-of-hearing Life History Cave isopod contact: 1 800/877 8339 The population size of the Madison Virginia Department of Cave isopod is unknown at most sites. Conservation and Recreation U.S. Fish & Wildlife Service Sampling results suggest that the Division of Natural Heritage 1 800/344 WILD population is dominated by adults. The 217 Governor Street, 3rd Floor http://www.fws.gov population structure of the Madison Richmond, Virginia 23219 804/786 7951 October 2010