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  • Proceedings of the First International Conference on the Culture of Penaeid Prawns/Shrimps
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  •   SEAFDEC Institutional Repository (SIR)
  • 01 SEAFDEC Publications
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  • Proceedings of the First International Conference on the Culture of Penaeid Prawns/Shrimps
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Thermal tolerance of larval greentail prawn Metapenaeus bennettae (Raced and Dall) a comparison with school prawn Metapenaeus macleayi

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Date
1985
Author
Murai, Tadashi
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Abstract
The thermal tolerance of four larval stages of Metapenaeus bennettae was studied in the laboratory. Critical Thermal Maximum (CTM), One hour Median Lethal Temperature (lhLT50), and Median Resistance Time (MRT) were measured. Moulting rate of larvae and hatching rate of embryos were also monitored to study the delayed effect of thermal stress.

Thermal tolerance was shown to be strongly dependent on acclimation temperature (TA) at all larval stages,which showed ontogenetic development of thermal resistance. Moulting of larvae was hindered at temperatures (37.2°C for nauplius when TA=25°C) well below lhLT50 (38.1°C for nauplius when TA=25°C). The embryonic stages were more susceptible to thermal stress than the larval stages. The salinity effects were also significant. Nauplius and protozoea stages showed their highest CTM values at the salinity in which they were spawned.When compared with another penaeid M. macleayi (offshore breeder), M. bennettae (estuarine breeder) was found to have higher thermal resistance, but was less adaptive to changes in acclimation temperature.
Description
Abstract only.
URI
http://hdl.handle.net/10862/916
Suggested Citation
Murai, T. (1985). Thermal tolerance of larval greentail prawn Metapenaeus bennettae (Raced and Dall) -- a comparison with school prawn Metapenaeus macleayi (Abstract only). In Taki Y., Primavera J.H. and Llobrera J.A. (Eds.). Proceedings of the First International Conference on the Culture of Penaeid Prawns/Shrimps, 4-7 December 1984, Iloilo City, Philippines (pp.164-165). Iloilo City, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center.
Subject
Comparative studies; Crustacean larvae; Temperature tolerance; Metapenaeus bennettae; Metapenaeus macleayi
Collections
  • Proceedings of the First International Conference on the Culture of Penaeid Prawns/Shrimps [79]

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