Effects of different diets
on larval development in a peppermint shrimp (Lysmata sp. (Risso))
A.L. Rhyne, J.Lin-2004
Aquaculture
Research, 35(12):
1179
Abstract:
Currently, only a handful of marine ornamental
species are commercially produced through aquaculture. In order for the
marine aquarium industry to continue to grow, a diverse selection of
cultured animals is required to offset wild collections. Long and variable
larval durations are the major bottleneck for mass production of marine
ornamental shrimp. Improving larval diet may reduce the larval duration and
enhance the prospects of commercial aquaculture. A laboratory study was
conducted to examine the effect of different diets on larval development and
survival of the peppermint shrimp, Lysmata (gulf coast variety), a
popular aquarium shrimp. The effect of three feeding regimes [Artemia
alone (ART), ArteMac TM alone (COMM) and Artemia in combination with ArteMac
TM (ART/COMM)] on survival and development were tested. Survival to zoea 5 for
both ART and ART/COMM treatments was 99%, but only 62.5% for COMM treatment.
ArteMac TM alone treatment shrimp only survived to zoea 7. Survival to postlarvae for
ART treatment (72.5%) was significantly lower (P<0.01) than those
of treatment ART/COMM (80.5%). Larvae fed ART/COMM had significantly (P<0.01)
shorter larval duration than larvae fed ART. Fourteen days after the first
postlarva appeared, the rates of settlement (85.4% and 67.5% respectively)
and survival (68.8% and 49.0% respectively) were significantly greater (P<0.01)
for larvae fed the ART/COMM than those fed ART.
(Florida Institute of Technology, Department of
Biological Sciences, 150 West University Boulevard, Melbourne, FL 32901,
USA. E-mail: arhyne001@hotmail.com or arhyne@fit.edu)