Energy Budgets of Pandalid Shrimp Pandalopsis japonica Larvae in the Different Larval Stages

Abstract

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 estimated at a total 1.03 J. Energy used for respiration was estimated at a total of 1.85 J. The intake energy by feeding reached a total of 77.69 J. The total sum of energies used by excretion and egestion was 58.61 J. Larvae assimilated 24.57% of ingested food and used 84.91% for somatic growth. The gross growth efficiency (K 1 ) was 22.19% for the entire larval stage, and the net growth efficiency (K 2 ) was 90.31%. Maintenance costs were estimated at 9.69% of assimilated energy for the entire larval stage.

Effects of stocking density and shelter type on the growth and survival of pandalid shrimp (Pandalopsis japonica Balss, 1914) juveniles

“…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.…”