8142

• UCREFRP Catalog Number: 8142
• Author: Horn, M. J.
• Title: Nutritional Limitation of Recruitment in the Razorback Sucker ‎(
• USFW Year: 1996.
• Copyright Material: NO

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before re-weighing. Dry weight of larvae and weight of lipids were calculated from

before- and after-extraction weights. Data are presented as percentage total dry carcass

weight.

2. Statistical Analyses

All statistical analyses were accomplished using SAS v 6.04. A repeated-

measures ANCOV A (SAS v. 6.04) was used to test differences in lipid levels, length,

and body weight over time for each temperature treatment. The repeated measures were

individual tanks within treatments. A pair-wise comparison of treatment means was used

to test treatment differences each sampling period. To avoid pseudo-replication, means

of each tank within treatments were used for analysis instead of individual larval

observations. Models and data transformations were performed based on analysis of

residual plots and general assumptions of the ANOV A model. Based on known

differences determined by statistical analysis, three approaches to describing and

detecting trends in the laboratory were in turn used to classify wild-caught larvae of

unknown feeding history.
To compare trends in larval growth over time and between temperature and

feeding treatments Log (Weight)-Log (Length) regressions of all larvae were examined

for each treatment group. The general regression model is of the form:

LogW = i + bLogL + e,

where at is equal to log a. In such a form the above model is the linear form for the

allometric growth function: