Tuesday, December 11, 2007 - 10:53 AM
0837

Insect succession on a dead black bear in northeastern Ohio

Joe B. Keiper, jkeiper@cmnh.org and Laura Bock. Cleveland Museum of Natural History, Department of Invertebrate Zoology, 1 Wade Oval Drive, Cleveland, OH

An American black bear (Ursus americanus) obtained as road kill was placed in a deciduous forest edge habitat in northeastern Ohio to follow the insect succession on a commonly poached wildlife species. Green bottle flies (Lucilia illustris) arrived first and deposited eggs in all body orifaces, followed within hours by the black blow fly (Phormia regina). Development rates were recorded along with temperature. Three distinct waves of mature wandering larvae occurred on three separate days (11, 12, and 14 days post exposure), the first being composed of a mix of L. illustris and P. regina with the final two waves being dominated by P. regina. Blow flies were followed by Piophilidae, Sepsidae, Muscidae, and Sphaeroceridae. Rove beetles (Staphylinidae) arrived within the first 2-3 days, and were followed by Nitidulidae, Silphidae, and Cleridae. Active decay occurred from days 1-20 followed by a long and sustained dry phase. These data will assist with future poaching cases of black bear, an animal increasing in population size in Ohio.


Species 1: Diptera Calliphoridae Lucilia illustris (green bottle fly)
Species 2: Diptera Calliphoridae Phormia regina (black blow fly)
Species 3: Diptera Sepsidae Nemopoda nitidula