Age, Growth, Reproduction, and Food of the Burbot, Lota lota (Linnaeus), in Southwestern Lake Superior
In: Transactions of the American Fisheries Society, Jg. 101 (1972-10-01), S. 667-674
Online
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Zugriff:
This study was based on 1,285 burbot (Lota lota) collected in three areas in southwestern Lake Superior in 1966–69. Age was determined from otoliths, the marginal zones of which were opaque from December to May and translucent from June to November. Average lengths of the age groups and annual increments were measured from a curve fitted by inspection to point estimates of lengths at capture. Burbot grew 5.7 inches during the first year of life and 4.3 inches during the second. Later annual increments through the twelfth year ranged from 1.2 to 2.6 inches. Average total lengths and calculated weights were 16.1 inches and 1.1 pounds at age V and 23.4 inches and 3.2 pounds at age X. First maturity was at age I, at a total length of 9.7 inches for males and 10.7 inches for females; all fish were mature at age V and at lengths greater than 16.4 inches (males) and 15.9 inches (females). Most burbot collected near shore in the Apostle Islands area in late January and February were spent, but none colle...
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Age, Growth, Reproduction, and Food of the Burbot, Lota lota (Linnaeus), in Southwestern Lake Superior
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Autor/in / Beteiligte Person: | Bailey, Merryll M. |
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Zeitschrift: | Transactions of the American Fisheries Society, Jg. 101 (1972-10-01), S. 667-674 |
Veröffentlichung: | Wiley, 1972 |
Medientyp: | unknown |
ISSN: | 1548-8659 (print) ; 0002-8487 (print) |
DOI: | 10.1577/1548-8659(1972)101<667:agrafo>2.0.co;2 |
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