Loading…
Attending this event?
Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! The schedule is subject to change (as of November 20, 2018). Please check back for updates. To return to the main Conference website, go to: www.midwestfw.org.

TIPS FOR NAVIGATING THIS SCHEDULE:
The conference schedule is hosted in SCHED which allows you to search within the schedule, and filter the schedule to show items only occurring on a certain date or within a track/symposia.
  • To view only a certain type of presentation or track, locate the heading "Filter By Type" in the navigation bar. As an example, try clicking on "T01: Fisheries: Great Lakes I".
  • The default view for the schedule is "Simple" which only shows the start time and title of the agenda item. Hover over the button that says "Schedule" to see the different view options. The "Expanded" option will show start and end times, room location, and session description, if there is one.
  • You can build your own schedule by creating a free account with SCHED by selecting "SIGN UP." Watch the "how-to" video to learn more about using Sched. 
  • PLEASE NOTE: Adding agenda items to your schedule through this app does not sign you up for a session. If an agenda item says "pre-registration required" or charges an additional fee, you need to add the item to your registration through the online registration system

View analytic
Tuesday, January 29 • 6:00pm - 9:00pm
(P44) Effects of Sedation Techniques on Stress Responses in Bluegill Sunfish (Lepomis macrochirus)

Sign up or log in to save this to your schedule and see who's attending!

AUTHORS. Margaret Thomas, Eastern Illinois University; Anabela Maia, Rhode Island College; Eloy Martinez, Eastern Illinois University; Robert Colombo, Eastern Illinois University

ABSTRACT. The process of sedating fish is necessary for a variety of procedures in research and within field or laboratory settings. Information regarding chemical sedatives, such as MS-222 (99.5% tricaine methanesulfate), suggests that it is often insufficient for field use due to extensive recovery time and withdrawal. Subsequently, alternatives to chemical sedatives are being explored, of which electronarcosis is a popular option. Electronarcosis applies particularly to “immediate-release” situations, as it is found to have rapid recovery times and minimal lasting effects on fish. Few studies provide an overview of the effects of sedation on its subjects, and large gaps remain with regard to the species-specific responses to the treatment. Therefore, we sought to compare the short-term physiological effects of bluegill sunfish (Lepomis macrochirus) subjected to electronarcosis and MS-222 sedation techniques. We hypothesize that sedation achieved by electronarcosis will provide an overall decreased stress response in its subjects. Bluegill sunfish were exposed to species-specific doses of MS-222 or electrical stunning to achieve complete sedation. Immediately following sedation, basal metabolic rates of fish were monitored with indirect calorimetry. Basal metabolic rates were employed as indicators of aerobic physiological activity on fish. Cortisol levels in blood were assayed after metabolic screening and gathered over a period of 1, 2, 4, and 6 hours following treatment on each group and compared to a pre-treatment control. Plasma cortisol levels and metabolic rates are expected to have an overall decreased value in subjects treated with electrosedation, deeming it a more practical alternative to chemical treatments.

Tuesday January 29, 2019 6:00pm - 9:00pm
Superior Ballroom CD

Attendees (1)