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The energy budget of the larvae of pandalid shrimp, Pandalopsis japonica, reared in the laboratory from zoea to post-larva was investigated. Energy used during the growth of the shrimp larvae was calculated daily for feeding, growth, molting, and metabolism. The total energy used was 16.2 J for the entire larval stage. Molting energy loss was estim...
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Citations
... To date, research about the shrimp has focused on the development of the larva (Komai & Mizushima, 1993;Komai, 1999), the energy budget of the larva (Kim et al., 2013), sperm structure (Kim et al., 2003(Kim et al., , 2006 and genetic studies Salma et al., 2012). For the active management and maintenance fisheries, juvenile shrimp must be grown and released. ...
In this study, we determined the optimal shelter type by comparisons of growth, survival and RNA/DNA ratio of Pandalopsis japonica juveniles after rearing for 1 month and examining the effects of some shelters. The shelters used were brush-type, coloured pompons, and vinyl blankets. Attachment of individuals was highest, 117.7 ± 9.29 shrimp/900 cm2, with brush-type shelters. In rearing experiments for 1 month with four shelters and two stocking densities, carapace length (4.44-4.48 mm), wet weight (119.1-126.9 mg/ind.) and RNA/DNA ratio (0.11-0.12) were not significantly different between the treatments. Survival was highest with the brush-type shelter, but values were not significantly related to stocking density. In conclusion, the shelter type most enhancing attachment to the substrate and survival was a brush-type shelter. Regarding stocking density, survival was higher with a lower stocking density (60 juveniles/900 cm2). Thus, the quantities of reared shrimp can be enhanced by introducing shelters in aquaculture tanks.
... , . (Kim et al., 1996), (Kim et al., 2013). , , . ...
Larvae of pandalid shrimp Pandalopsis japonica are benthic, and may prefer bottom to planktonic food items. Three diets, enriched Artemia meta-nauplii (AR), clam meat (CM), and crumbled shrimp (CD), were evaluated as food for early larvae in terms of biometric growth R:D ratios. Larvae fed AR and CM had significantly greater total length and dry weight than did larvae fed CD (P
