Atrazine Exposure Influences Immunity in the Blue Dasher Dragonfly, Pachydiplax longipennis (Odonata: Libellulidae). Issue 5 (11th October 2018)
- Record Type:
- Journal Article
- Title:
- Atrazine Exposure Influences Immunity in the Blue Dasher Dragonfly, Pachydiplax longipennis (Odonata: Libellulidae). Issue 5 (11th October 2018)
- Main Title:
- Atrazine Exposure Influences Immunity in the Blue Dasher Dragonfly, Pachydiplax longipennis (Odonata: Libellulidae)
- Authors:
- St. Clair, Coy R
Fuller, Claire A - Abstract:
- Abstract: Agricultural runoff containing herbicide is known to have adverse effects on freshwater organisms. Aquatic insects are particularly susceptible, and herbicide runoff has the potential to affect immunity in this group. Here we examined the effect of ecologically relevant levels of atrazine, an herbicide commonly used in the United States, on immune function in larvae of the blue dasher dragonfly (Odonata: Libelluludae, Pachydiplax longipennis Burmeister 1839) during a long-term exposure at ecologically relevant concentrations. Larvae were exposed to concentrations of 0, 1, 5, and 10 ppb atrazine for 3 or 6 wk. Hemocyte counts, hemolymph phenyloxidase (PO) activity, cuticular PO, and gut PO were measured at the end of each trial period as indicators of immune system strength. Atrazine concentration had a significant effect on hemocyte counts after controlling for larval size. There was a significant interaction between time and concentration for hemolymph PO, cuticular PO, and a marginal interaction for gut PO. The effect of atrazine on the measured immune parameters was often nonmonotonic, with larger effects observed at intermediate concentrations. Therefore, atrazine affects both hemocyte numbers and PO activity over time in P. longipennis, and the changed immune function demonstrated in this study is likely to modify susceptibility to pathogens, alter wound healing, and may decrease available energy for growth and metamorphosis.
- Is Part Of:
- Journal of insect science. Volume 18:Issue 5(2018)
- Journal:
- Journal of insect science
- Issue:
- Volume 18:Issue 5(2018)
- Issue Display:
- Volume 18, Issue 5 (2018)
- Year:
- 2018
- Volume:
- 18
- Issue:
- 5
- Issue Sort Value:
- 2018-0018-0005-0000
- Page Start:
- Page End:
- Publication Date:
- 2018-10-11
- Subjects:
- atrazine -- immunity -- Odonata -- hemocyte -- phenoloxidase
Insects -- Periodicals
Entomology -- Periodicals
Arthropoda -- Periodicals
Insects
Arthropods
Biology
Ecology
Entomologie -- Périodiques
Entomology
Insects
Electronic journals
Periodicals
595.05 - Journal URLs:
- http://jinsectscience.oxfordjournals.org/ ↗
http://bibpurl.oclc.org/web/1532 http://www.insectscience.org/ ↗
http://bibpurl.oclc.org/web/9276 http://pubmedcentral.com/tocrender.fcgi?journal=204 ↗
http://www.bioone.org/bioone/?request=get-journals-list&issn=1536-2442 ↗
http://www.oxfordjournals.org/en/ ↗ - DOI:
- 10.1093/jisesa/iey095 ↗
- Languages:
- English
- ISSNs:
- 1536-2442
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 12198.xml