6042

• UCREFRP Catalog Number: 6042
• Author: Haynes, C. M., R. T. Muth and T. P. Nesler.
• Title: Identification of Habitat Requirements and Limiting Factors For Colorado Squawfish and Humpback Chub.
• USFW Year: 1985.
• USFW - Doc Type: Fort Collins, Colorado.
• Copyright Material: NO

Table 12. Drift net catches of Colorado squawfish larvae at State Line (river km 355.3), Green River,
Colorado, 1984.
Date of Water Number of Size (nun TL) Estimated age Estimated
larval temperature larvae of larvae (days) of Colorado squawfish
collections (C)a collected collected larvae collectedb spawning datesb
7/16 19.5 1 8.5 9 7/08
7/17 19.0 1 8.0 7 7/11
7/21 19.5 3 7.5-8.5 4-9 7/13-18
7/22 19.3 5 8.3-8.6 8-10 7/13-15
7/29 19.0 5 7.5-8.5 4-9 7/21-26
7/30 19.3 9 7.7-8.3 6-11 7/20-25
7/31 18.5 2 8.3,9.2 8,12 7/20-24
8/06 17.5 1 8.9 11 7/27
N
TOTAL 27 7.5-8.9 4-12 7/08-27 \0

aMean value for four 2-hr periods
bnerived from back-calculated age estimates of larvae