The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

Please note: Recorded presentations are still being processed and added to the site daily. If you granted permission to record and do not see your presentation, please keep checking back. Thank you.

Friday, December 16, 2005
D0155

Relative abundance of native and non-native Coccinellids in Maine

Christy Finlayson, christy.finlayson@umit.maine.edu1, Kristine Landry, kristine.m.landry@umit.maine.edu1, and Andrei Alyokhin, andrei.alyokhin@umit.maine.edu2. (1) University of Maine, Department of Biological Sciences, 5722 Deering Hall, Orono, ME, (2) University of Maine, Biological Sciences, 5722 Deering Hall, Orono, ME

A survey was conducted in 2004 and 2005* to assess the relative abundance of native and non-native coccinellids in different habitats in Maine. From May to October, coccinellids were sampled by yellow sticky trap, sweep net, beating sheet, and visual observation in apple, potato, grain, mixed organic crops, deciduous forest, coniferous forest, mixed forest, field, shrub, and riparian habitats situated within close proximity to each other in five locations in Orono, Presque Isle, Monticello, and Fryeburg, Maine.  In 2004, a total of 3735 coccinellids were collected.  Propylea quatuorodecimpuncata (1359), Coleomegilla maculata (503), Harmonia axyridis (181), and Coccinella septempunctata (167) were the most numerous non-native species.  Three other non-native species were also collected, but in very small numbers: Coccinella hieroglyphica (2), Epilachna verivestris (6), and Hippodamia variegata (5).  Among species collected that are native to the region were Psyllobora vigintimaculata (1190), Coccinella trifasciata (80), Hippodamia parenthesis (47), Hippodamia tredecimpuncata (25), Mulsantina hudsonica (7), Adalia bipunctata (6), Anisosticta bitriangularis (3), Coccinella transversoguttata (2), Hippodamia convergens (1), and Anatis quindecimpunctata (1).  Propylea quatuorodecimpunctata was the dominant species in field, potato, and mixed organic habitats; Psyllobora vigintimaculata in shrub, riparian, coniferous forest, and mixed forest; and Harmonia axyridis in apple.  In deciduous forest, Psyllobora vigintimaculata and Propylea quatuorodecimpuncata shared dominance.  In grain, Propylea quatuorodecimpuncata was dominant in Presque Isle, but Coleomegilla maculata was dominant at the more southern, Orono location.  *2005 results will be incorporated at the end of the field season.



Species 1: Coleoptera Coccinellidae
Keywords: Survey, Habitat

Poster (.pdf format, 2086.0 kb)