1 / 23

American Burying Beetles in South Dakota

American Burying Beetles in South Dakota. Charlene “Charlie” Bessken US Fish and Wildlife Service Pierre, SD Photo by Doug Backlund. The American Burying Beetle in South Dakota.

albert
Download Presentation

American Burying Beetles in South Dakota

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. American Burying Beetles in South Dakota Charlene “Charlie” Bessken US Fish and Wildlife Service Pierre, SD Photo by Doug Backlund

  2. The American Burying Beetle in South Dakota • Specimens at South Dakota State University Insect Museum show that the species occurred in eastern SD in 1945, and one specimen is from Haakon County in Western SD. • Numerous searches have been conducted in the state but no ABB were found until 1995. • In 1995, 41 ABB were captured and released in southern Gregory and Tripp Counties, SD.

  3. Former Occurrence Brookings County Union County Haakon County

  4. Gary Marrone Doug Backlund

  5. Keya Paha River Survey Area Black = trap sites Red = captures of individual ABB

  6. Approx. 865 sq. mi. of habitat with 544 sq. mi. of habitat with a core population

  7. Highlights from 2005 (June) • 168 (115 male/53 female) total captured and tagged in 410 trap nights = .41 per trap night • 37 (22 male/15 female) recaptured once and 8 recaptured twice = 45 recaptures for .11 per trap night • Total of tagged and recaptured beetles = 213 for .52 per trap night • 1 female was tagged on June 18th and recaptured on the 25th at the same site. This is the longest time interval between a tagging and recapture. • 9 recaptures were at different sites from where they were tagged. All others were recaptured at the same site. • 2 ABB were captured 2.78 miles from the previous capture site. This information is from SD Game, Fish And Parks Report

  8. Highlights from 2005 (August) • 323 (164 male/159 female) ABB captured, marked and released in 450 trap nights = .718 per trap night • Only 14 were adults, 309 were tenerals • 66 (38 male/28 female) ABB recaptured once, 10 recaptured twice and one recaptured 3 times • Total of tagged an recaptured beetles = 400 for .81 per trap night • 1 female and 1 male tagged on August 12 were recaptured on the 19th. • 26 recaptures were at different sites from where they were tagged. • Greatest distance between recaptures was 2.8 miles This information is from SD Game, Fish And Parks Report

  9. Highlights from 2006 (August) • 82 (5 adult/77 tenerals) (38 male/44 female) ABB were captured in 57 trap nights. • The catch per trap night this year was over 3 times the previous highest catch rate reported in 2000. • The adult to teneral ratio was 1:15.4 – nearly 3 times the previous high reached in 2000 • This year’s record abundance of teneral ABB’s may be contributed to extreme heat and drought conditions causing abnormally high mortality of vertebrates.

  10. SILPHIDS CAPTURED IN SOUTHCENTRAL SOUTH DAKOTA FROM 12-27 AUGUST 1995 I II III IV TOTAL PTN N. americanus 7 19 15 0 41 .113 N. carolinus 13 40 2 44 99 .273 N. hybridus 4 1 0 0 5 .001 N. marginatus 1448 396 216 1003 3063 8.438 N. obscurus 30 1 0 10 41 .113 N. orbicollis 143 37 31 20 231 .636 N. pustulatus 6 2 1 1 10 .003 N. tomentosus 20 3 4 9 36 .099 H. ramosa 9 0 0 1 10 .003 N. surinamensis 11 19 9 8 47 .129 N. americana 260 77 1 24 362 .997 O. noveboracense 21 1 0 1 23 .006 T. lapponicus 317 94 3 168 582 1.603 TRAP NIGHTS 218 59 43 43 363 12.259

More Related