Workshop to evaluate sea lamprey populations "WESLP"

Table A-XVI.
Differences in mean length (mm) between caged groups (low and high density) and wild populations
of sea lamprey larvae in five Michigan streams. Length range (mm) of larvae in parentheses
(Morman 1987, In press).
Age I (October 1977) Age II (May 1978)
Low High Wild Low High Wild
Stream density density group density density group
Jordan River
Manistee River
White River
Sturgeon River
Rifle River
52,58,61,64"/
(52-71) (44-E)
--- (5&4) (50-107) ---b/
N=24 N=71 --- N=24 N=62
79,80,86,89 c /
80,83,88,91,92 d /
(43-79) (39-77)
--- (4&1) (406-100)
---
N=24 N=65 --- N=24 N=65 ---
108
(80-103) (67-94) (62-96)
(100-118) (74-97) (83-109)
N=25 N=72 N=26 N=25 N=72 N-14
52
53,55e/
(52-70)
31-58) (39-69) (55-73) (45-65)
---
N=25 N=69 N=86 N=25 N=63 ---
101
(79-108) (65-96) (64-112)
(89-120) (70-97) (73-118)
N=24 N=75 N=109 N=24 N=52 N=84
a/ Based on data collected in 1970,
b / No data available
c/ Based on data collected in 1970,
d / Based on data collected in 1971,
e/ Based on data collected in 1970,
1974, 1975, 1976
1973,
1972,
1978
1976, 1980
1974, 1977, 1978