2022 Early Hearing Detection & Intervention Virtual Conference

March 13 - 15, 2022

<< BACK TO AGENDA

6/06/2017  |   12:15 PM - 12:30 PM   |  ENEMY EXACERBATION: EFFECTS OF PREDATOR STRESS ON SULFATE LETHALITY IN FRESHWATER AMPHIPODS   |  305B

ENEMY EXACERBATION: EFFECTS OF PREDATOR STRESS ON SULFATE LETHALITY IN FRESHWATER AMPHIPODS

The presence of predator cues can influence the response of aquatic organisms to anthropogenic contaminants. This study examined the effects of predator cues on behavior, metabolic rate, and sulfate (as Na2SO4) toxicity in amphipods (Gammarus sp). Predator cues included alarm cue (macerated conspecifics) and kairomone from mosquitofish (Gambusia affinis) fed amphipods. Avoidance behavior was quantified by measuring time spent active and sheltering in refuge when amphipods were exposed to cues. Lethality trials (96 h) were performed with amphipods exposed to salt alone and salt + cue (2 h cue exposure/day). Intermittent flow respirometry was used to measure oxygen consumption both during and after exposure to cues. Amphipods responded to both types of cue behaviorally, but toxicity tests only showed an increased response to sulfate when kairomone was present.

  • C13 Ecotoxicology
  • C03 Invertebrates
  • S03 Stressing the 'Eco' in Freshwater Ecotoxicology

Presentation:
This presentation has not yet been uploaded.

Handouts:
Handout is not Available

Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference


Presenters/Authors

Trevor Chapman (), East Tennessee State University, chapmantl@goldmail.etsu.edu;


ASHA DISCLOSURE:

Financial -

Nonfinancial -

Joseph Bidwell (), East Tennessee State University, bidwell@mail.etsu.edu;


ASHA DISCLOSURE:

Financial -

Nonfinancial -