4.2 - Density


Density is a function of recruitment and mortality. Catch per trap net-night of Age-1 and older fish in fall samples is used as an index of density. Age-0 crappies are excluded because trap nets do not sample Age-0 in proportion to their abundance and the presence of a large year-class could bias the sample.

Catch rates of 10 to 39 Age-1 and older crappie per net-night are considered optimal for our purposes. However, when sufficient forage is available and growth is good (mean length @ Age-2+ >250mm) higher densities are acceptable. Lower scores are assigned to the same catch per net night if growth is poor (mean length at Age-2+ <200mm).

Density, fish movement, weather conditions, and other factors influence trap net catch rates. Lake morphometry, water levels, presence of cover, etc influence capture efficiency. Catch rates may not always represent actual density. For this reason, several years of data are desired when analyzing crappie populations.

Population density influences the ratings of 2 other parameters. When densities of crappie are good (>20 Age-1+ and older per net-night), broader ranges of growth rates and size structure are accepted as desirable.

Information Provided by Arkansas Game and Fish Commission<

Thanks for stopping by www.crappie101.com<. We are the site dedicated to crappie fishingi. We bring you tips and techniques from crappie country's top pros and the everyday fisherman not to mention the most complete information on crappie lakes from all around the country.

Bookmark Us

Bookmark Website 
Bookmark Page 

Follow Us

Find www.crappie101.com on TwitterFind www.crappie101.com on FacebookFind www.crappie101.com on YouTubeFind www.crappie101.com on Flickr

Platinum Sponsor

<

Current Moon

Recommend this page

Who's online

There are currently 0 users and 92 guests online.

A man-made stretch of rocks or material of a hard composition that usually extends above and below the shoreline, often found near dams of big impoundments.

Search Glossary