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 10. Seine and dip net catches of Colorado squawfish larvae at Harding Hole (river km 32.5) and
Box Elder (river km 3.1), Yampa River, Colorado, 1983.
Date of Water Number of Size (mm TL) Estimated age Estimated
larval temperature larvae of larvae (days) of Colorado squawfish
collections (C)a collected collected larvae collectedb spawning datesb
7/20-21 21.5 lC 7.3 3 7/19
7/22-23 22.0 5 8.2-9.2 8-12 7/11-7/15
7/23-25 22.0 3 8.8-9.0 11 7/13
8/03-04 23.5 3 7.6-8.0 5-7 7/29-7/31
8/08-09 25.3 63 7.4-9.3 4-13 7/27-8/05
8/09-10 24.5 11 8.1-9.2 6-12 7/29-8/04 N
8/15-16 24.8 2 8.5,9.2 9,12 8/05-8/08 -...J
8/16-17 25.3 11 8.0-9.0 7-11 8/07-8/11
8/20-21 28.8 4 7.3-8.4 3-9 8/13-8/19
TOTAL 103 7.3-9.3 3-13 7/11-8/19

aMean values for four 2-hr periods
bDerived from back-calculated age estimates of larvae
cHarding Hole collection