| Abstract: | Effective anesthetics are a critical component of safe and humane fish handling procedures. We tested three concentrations each of four anesthetics-Finquel (tricaine methanesulfonate, herein referred to as MS-222), BENZOAK (20% benzocaine),AQUI-S 20E (10% eugenol), and Aquacalm (metomidate hydrochloride)-for efficacy and safety in metamorphosed, outmigrating juvenile Pacific Lampreys Entosphenus tridentatus. The anestheticsMS-222 (100 mg/L) and BENZOAK (60 mg/L) were the most effective for anesthetizing juvenile Pacific Lampreys to a handleable state with minimal irritation to the fish. Fish anesthetized with BENZOAK also had lower rates of fungal infection than those exposed to MS-222, AQUI-S 20E, or no anesthetic. Exposure to AQUI-S 20E irritated juvenile Pacific Lampreys, causing them to leap or climb out of the anesthetic solution, and Aquacalm anesthetized fish to a handleable state too slowly and incompletely for effective use with routine handling procedures. Our results indicate that MS-222 and BENZOAK are effective anesthetics for juvenile Pacific Lampreys, but field studies are needed to determine whether exposure to MS-222 increases risk of fungal infection in juvenile Pacific Lampreys released to the wild. |
| Genre: | Article |
| ProdID: | 70044459 |
| Citation Author: | Christiansen, Helena E.; Gee, Lisa P.; Mesa, Matthew G. |
| Citation Contributing Office: | Western Fisheries Research Center |
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| Citation End Page: | 276 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | North American Journal of Fisheries Management |
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| Citation Number Of Pages: | 8 |
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| Citation Phsyical Description: | 8 p. |
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| Citation Publisher: | Taylor & Francis |
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| Citation Search Results Text: | Anesthesia of juvenile Pacific Lampreys with MS-222, BENZOAK, AQUI-S 20E, and Aquacalm; 2013; Article; Journal; North American Journal of Fisheries Management; Christiansen, Helena E.; Gee, Lisa P.; Mesa, Matthew G. |
| Citation Start Page: | 269 |
| Citation Volume: | 33 |
| Citation Year: | 2013 |
| Type: | citation/reference |
| Text: | Anesthesia of juvenile Pacific Lampreys with MS-222, BENZOAK, AQUI-S 20E, and Aquacalm; 2013; Article; Journal; North American Journal of Fisheries Management; Christiansen, Helena E.; Gee, Lisa P.; Mesa, Matthew G. |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1080/02755947.2012.754807 |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Mar 2013 00:00 -0600 |
| Publisher: | Taylor & Francis |
