9583

• UCREFRP Catalog Number: 9583
• Author: BIO/WEST Inc.
• Title: Annual Summary Report 1993 - Survival of Age-0 Colorado Squawfish in the Green and Colorado Rivers ‎(UDWR Contract No. 90-2558)‎.
• USFW Year: 1994.
• USFW - Doc Type: Logan, UT.
• Copyright Material: NO

Table 6. Number of age-0 Colorado squaw6sh, geometric mean CPE, and mean total length for the 1987-
1993 year classes in Reach 1, Colorado River (RM 50-0)'.

SAMPLE NO. SEINE HAULS NO. CPE (#/100m2) MEAN TL (mm)
PERIOD (with age-0) Age-0 (ST. DES (range)

--1987 YEAR CLASS--
Fall '87 30 (11) 31 1.24 (3.15) 44 (20-60)
Spring '88 32 (8) 8 0.45 (1.99) 57 (47-60)
--1988 YEAR CLASS--
Fall '88 40 (28) 89 2.64 (2.68) 42 (22-60)
Spring '89 31 (23) 186 4.92 (4.22) 45 (27-70)
--1989 YEAR CLASS--
Fall '89 40 (24) 120 2.07 (3.08) 40 (24-67)
Spring '90 34 (8) 14 0.42 (2.05) 41 (29-54)
--1990 YEAR CLASS--
Fall '90 32 (16) 111 2.86 (4.61) 44 (27-60)
Spring '91 34 (9) 19 0.63 (2.41) 46 (32-62)
--1991 YEAR CLASS--
Fall '91 31 (17) 83 2.30 (3.42) 44 (27-60)
Spring '92 23 (9) 45 1.44 (3.46) 42 (25-64)
--1992 YEAR CLASS--
Fall '92 39 (11) 103 0.84 (3.29) 34 (21-59)
Spring '93 18 (7) 18 0.92 (2.41) 40 (29-60)
--1993 YEAR CLASS--
Fall '93 38 (20) 140 2.97 (4.22) 32 (22-47)
e- Data for spring 1992 and spring 1993 sampling in Reach 1 includes RM 35-0 oNy.
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