CLEAR ACRYLIC 

 CYLINDER — 



AIRSTONE 



AIR 



INFLOW 



SEAWMER 

 INFLOW 



PVC RIM 



NYLON FILTER 

 SCREEN 



SEAWATER 

 OUTFLOW RAMP 



CONCAVE 

 BOnOM 



DRAINAGE 

 FAUCET 



Figure 14-2. The 12 C Hatching Jar System Used to Culture 

 Juvenile and Adult Grass Shrimp, Palaemonetes vulgaris. 



NOTE: 20 and 48 8 sizes are identical in design. 



was used for 14 weeks, during which time a combination of thawed and Uve 

 juvenile brine shrimp were fed in excess, with unconsumed food removed by 

 siphon once each week. 



All grass shrimp were transferred from the 20 C jar at age 17 weeks. Of these 

 shrimp, 40 were used in a diet study, and the remaining 66 were placed in a 48 

 fi hatching jar, a scaled-up version of the 20 C size (Figure 14-2). In the diet 

 study, 40 shrimp were divided evenly between two 49. systems resembling 

 that shown in Figure 14-1. One group of 20 shrimp was reared on lab-reared 

 Anemia adults while the other group was fed 243-400 ^m pieces of the 

 commercial flake fish food, Tetra Marin. Animals were fed daily in excess. 

 Growth in carapace length, survival, and the incidence of ovigerous females 

 were considered in determining the suitability of each diet. 



209 



