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RALEIGH, N.C. (April 27, 2005) – Got burrowing crayfish? If so, the N.C. Wildlife Resources Commission wants to hear from you. This spring, aquatic biologists are surveying burrowing crayfish populations in western North Carolina, and they need the public’s help in locating the burrows of these often-reclusive critters.
Burrows resemble miniature “chimneys” with piles of excavated mud around or over the opening of the burrow. The burrows can be simple, with only one or two tunnels, or they can be complex, with many branches and several openings. Typically, burrows are located near surface waters, such as swampy areas and wet fields, although they can be found considerable distances from visible water, such as in low-lying, wooded areas. “If anyone knows the locations of any crayfish burrows on or near their properties or on any public lands, such as the Wildlife Commission’s game lands or national forests, we want to hear from them,” said Jeff Simmons, an aquatic nongame biologist with the Wildlife Commission. “Our focus area includes all 23 western counties as well as portions of Alexander, Caldwell, Iredell, Mecklenburg, Union and Watauga counties.” Although secretive, burrowing crayfish can sometimes be seen near the entrances of their burrows foraging on warm, humid or wet nights. They can be striking — often brightly colored red, blue, orange or a combination of colors. More than 30 crayfish species are found in western North Carolina, including at least six species of burrowing crayfish. However, their scattered distribution can make it difficult for biologists to know their native range and population numbers — or even how many crayfish species call North Carolina home. “Surveys are invaluable for helping biologists determine the distribution and abundance of crayfish in the state,” Simmons said. “For example, the Greensboro burrowing crayfish was once thought to be extremely rare and was considered for listing as a federally endangered species. However, due to survey work like this one, this particular species has been found over a larger area and is no longer considered a candidate for listing.” Anyone who has information on crayfish burrow locations can contact Simmons, (828) 665-4717, Monday-Friday, 8 a.m. – 5 p.m., or jeff.simmons@earthlink.net. Visit the Crayfishes of North Carolina page for more information. |
