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Impacts of secondary and tertiary recruitment on overall production and yield of Procambarus clarkii (Girard) under simulated commercial conditions
Lutz CG and Richard M 
Published Online: 2/15/2013
Abstract
Procambarus (Scapulicambarus) clarkii (Girard) typically produces multiple size classes in production ponds, but interactions between early and later-hatched young are not well understood. For two consecutive production seasons, outdoor mesocosms were stocked with either 1) a single primary recruitment class of P. clarkii, 2) primary and secondary recruitment classes (with a 1 month interval between stocking), or 3) primary, secondary and tertiary recruitment classes (also with 1 month intervals). In the first season all animals over 80 mm total length were removed upon trapping and subsequently graded into marketable (80 – 90 mm) or preferred (> 90 mm) size classes. In the second season animals less than 90 mm in length were returned to mesocosms for additional growth to simulate the emerging commercial practice of on-board grading, until the final two weeks of trapping at which time all animals over 80 mm were removed. Monthly yields from each mesocosm were assigned values based on prevailing prices for marketable and preferred grade categories. The presence of secondary and secondary-plus-tertiary recruitment generally resulted in higher yields and higher total harvest values. Results highlight the economic importance of secondary and tertiary young-of-the-year recruitment.
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How to Cite
Lutz CG and Richard M. (2013). Impacts of secondary and tertiary recruitment on overall production and yield of Procambarus clarkii (Girard) under simulated commercial conditions. Freshwater Crayfish 19(1):1-6. doi: 10.5869/fc.2013.v19.001
Author Information
Charles G. Lutz,* Aquaculture Research Station, Louisiana State University, 2410 Ben Hur Rd, Baton Rouge, LA, USA70820. E-mail: glutz@agcenter.lsu.edu
Madelline Richard, Science, St. Joseph's Academy, 3015 Broussard St., Baton Rouge, LA, USA70808. E-mail: 31768@sjamail.net
Corresponding Author indicated by an *.
Publication History
Manuscript Submitted: 12/10/2010
Manuscript Accepted: 5/25/2012
Published Online: 2/15/2013
Published in Print: 2/15/2013
Funding Information
No specific funding statement is available for this article.