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Stoneflies mapped across Ohio, with implications for water quality and nature conservation
Date:4/12/2012

Stoneflies, or Plecoptera, are insects that live in water during immature stages, but are terrestrial as adults. They are among the best bioindicators of river water quality and general landscape disturbance. Anglers often model their dry and wet flies (lures) after these insects.

Scientists at the University of Illinois and Western Kentucky University, funded by the USA National Science Foundation, have completed the first ever statewide assessment of stonefly diversity in Ohio. The study has been published in the open-access journal ZooKeys.

The team used over 30,000 insect specimens gathered from 18 regional museums (Illinois Natural History Survey, Brigham Young University, Ohio State University) and from new sampling for the analysis. They determined that at least 102, but possibly as high as 120 species occur in Ohio. The majority of species were found to have evolved to survive warm summer water temperatures and even drought, most similar to the stoneflies found in the neighboring states of Indiana and Kentucky. Analyses demonstrated that the greatest number of species lived in the eastern half of the state where forest cover is greatest.

This study provides important conservation information. The researchers found that over 17% of the species were rare, being known from only one or two locations. One of these species, the Atlantic Needlefly, Leuctra duplicata Claassen), is known only from two adjacent springbrooks in northeast Ohio. This information will help Ohio organizations to prioritize species and high quality streams for greater protection. Several other species w
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Contact: Dr. R. Edward DeWalt
dewalt@illinois.edu
Pensoft Publishers
Source:Eurekalert  

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Stoneflies mapped across Ohio, with implications for water quality and nature conservation
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