| Abstract: | When lake trout Salvelinus namaycush were subjected to a single attack by a sea lamprey Petromyzon marinus in laboratory tests in 1986, percentage mortality was significantly higher in small fish (64%; 469-557 mm; N = 67) than in medium (44%; 559-643 mm; N = 45) or large fish (43%; 660-799 mm; N = 47). Additional studies conducted in 1987 with 55 medium (559-650 mm) and 52 large (660-825 mm) lake trout confirmed that there was no difference in mortality between the two larger size-groups. Mortality declined in lake trout over 559 mm, but was still greater than 43%. This level of mortality and the sea lampreys‘ apparently active selection of larger fish indicated that, contrary to previously published opinions, large size in lake trout (up to ∼800 mm in length) might not allow better survival from single sea lamprey attacks. |
| Genre: | Article |
| ProdID: | 70007060 |
| Citation Author: | Swink, William D. |
| Citation Contributing Office: | Upper Midwest Environmental Sciences Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 1002 |
| Citation Issue: | 6 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Transactions of the American Fisheries Society |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 7 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | 7 p. |
| Citation Projection: | |
| Citation Public Comments: | None |
| Citation Publisher: | Taylor & Francis |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Effect of size on lake trout survival after a single sea lamprey attack; 1990; Article; Journal; Transactions of the American Fisheries Society; Swink, William D. |
| Citation Start Page: | 996 |
| Citation Volume: | 119 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Effect of size on lake trout survival after a single sea lamprey attack; 1990; Article; Journal; Transactions of the American Fisheries Society; Swink, William D. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1577/1548-8659(1990)119<0996:EOLTSO>2.3.CO;2 |
| Date Other: | Tue, 2 Jan 1990 12:10 -0600 |
| Publisher: | Taylor & Francis |
