| Abstract: | To assess the energetics of migration in an anadromous fish, adult American shad (Alosa sapidissima) were swum in a large respirometer at a range of speeds (1.0-2.3 body lengths (BL) s-1, 13-24 ??C). Metabolic rate (M(O2)) was logarithmically related to swimming speed (Bl s-1; r2 = 0.41, slope = 0.23 ?? 0.037) and tailbeat frequency (beats x min-1; r2 = 0.52, slope = 0.003 ?? 0.0003). Temperature had a significant effect on metabolic rate (r2 = 0.41) with a Q10 of 2.2. Standard metabolic rate (SMR), determined directly after immobilization with the neuroblocker gallamine triethiodide, ranged from 2.2-6.2 mmolO2 kg-1 h-1 and scaled with mass (W) such that SMR = 4.0 (??0.03)W(0.695(??0.15)). Comparison of directly determined and extrapolated SMR suggests that swimming respirometry provides a good estimate of SMR in this species, given the differences in basal activity monitored by the two methods. Overall, American shad metabolic rates (M(O2) and SMR) were intermediate between salmonids and fast-swimming perciforms, including tunas, and may be a result of evolutionary adaptation to their active pelagic, schooling life history. This study demonstrates variability in metabolic strategy among anadromous fishes that may be important to understanding the relative success of different migratory species under varying environmental conditions. |
| Genre: | Article |
| ProdID: | 70021461 |
| Citation Author: | Leonard, J. B. K.; Norieka, J. F.; Kynard, B.; McCormick, S. D. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 295 |
| Citation Issue: | 4-5 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Journal of Comparative Physiology - B Biochemical, Systemic, and Environmental Physiology |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 9 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Metabolic rates in an anadromous clupeid, the American shad (Alosa sapidissima); 1999; Article; Journal; Journal of Comparative Physiology - B Biochemical, Systemic, and Environmental Physiology; Leonard, J. B. K.; Norieka, J. F.; Kynard, B.; McCormick, S. D. |
| Citation Start Page: | 287 |
| Citation Volume: | 169 |
| Citation Year: | 1999 |
| Type: | citation/reference |
| Text: | Metabolic rates in an anadromous clupeid, the American shad (Alosa sapidissima); 1999; Article; Journal; Journal of Comparative Physiology - B Biochemical, Systemic, and Environmental Physiology; Leonard, J. B. K.; Norieka, J. F.; Kynard, B.; McCormick, S. D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1007/s003600050223 |
| Date Other: | Fri, 1 Jan 1999 00:00 -0600 |
| Publisher: | |
