Condition

- Read Chapter 8 in
*Introductory Fisheries Analyses with R*and these notes and consider the items below.- What are the three most common condition indices?
- What is the formula for Fulton’s condition factor?
- What fundamental assumption about fish “growth” does Fulton’s condition factor make? Why does this make this metric largely useless?
- What is the formula for the relative condition factor of LeCren?
- What is the primary limitation for using the relative condition factor?
- What is the formula for a relative weight?
- What possible relationship with condition should be checked for before computing an overall measure of condition for a stock of fish?
- What R function is used to find the coefficients of the standard weight equation for a given fish species? What are the arguments to this function?
- What statistical test can be used to compare mean relative weights among Gabelhouse length categories?

- Read Pope and Kruse (2007) Sections 10.1, 10.3, 10.6, & 10.7 (
*the complete chapter is here*) and consider the items below.- What is “condition” a measure of?
- Condition indices must control for what confounding effect? Put this into your own words.
- Why is measuring fish condition important to a fisheries scientist?
- What are the three most common condition indices?
- What is the formula for Fulton’s condition factor?
- What fundamental assumption about fish “growth” does Fulton’s condition factor make? Why does this make this metric largely useless?
- What is the formula for the relative condition factor of LeCren?
- What is the primary limitation for using the relative condition factor?
- What is the formula for a relative weight?
- What value of W
_{r}represents fish in “good condition”? - What abiotic and biotic factors have been found to be related to fish condition?