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Metabolism and chemical composition of phyllosoma larvae,with special reference to the tropical rock lobster Panulirus ornatus (Decapoda; Palinuridae)

Citation

Ikeda, T and Smith, GG and McKinnon, AD and Hall, M, Metabolism and chemical composition of phyllosoma larvae,with special reference to the tropical rock lobster Panulirus ornatus (Decapoda; Palinuridae), Journal of Experimental Marine Biology and Ecology, 405 pp. 80-86. ISSN 0022-0981 (2011) [Refereed Article]

Copyright Statement

Copyright 2011 Elsevier B.V.

DOI: doi:10.1016/j.jembe.2011.05.022

Abstract

Rates of oxygen consumption and ammonia excretion and chemical composition (water, ash and CN composition) were determined throughout larval development, from Stages I–IX, of Panulirus ornatus phyllosoma larvae raised in the laboratory. Dry mass (DM) specific oxygen consumption rates varied from 1.4 to 3.3 μl O2 (DM)−1 h−1, showing a pattern of developmental decline. In contrast, specific ammonia excretion rates fluctuated irregularly from 0.02 to 0.067 μg NH4–N (DM)−1 h−1, yielding oxygen consumption to ammonia excretion ratios (O:N atomic ratio) as wide as 51–180. With progressive development, ash decreased from 34% to 17% of DM while C composition increased from 33% to 41% of DM. No consistent changing pattern with development was seen for water contents (74–83% of WM), N composition (6.9–9.5% of DM) and C:N ratios (4.0–5.1). Supplemental data of both specific oxygen consumption and ammonia excretion rates of laboratory-raised Stage III P. homarus and wild Parribacus antarcticus phyllosoma (stage unknown) of this study and literature data on phyllosomas of other lobster species by previous workers were shown to be comparable to those of P. ornatus phyllosomas when the differences inDM and temperature were taken into account. No appreciable differences due to the origin of the specimens, whether wild or laboratoryraised, were evident. Comparison of the present results with those of stomatopod larvae and holoplanktonic crustaceans in the same tropical marine habitats revealed that phyllosoma larvae are characterized by somewhat lower DM specific oxygen consumption rates and N composition. The study revealed markedly reduced ammonia excretion rates in phyllosomas, suggesting reduced swimming activity and preferential utilization of dietary protein to somatic growth rather than metabolism.

Item Details

Item Type:Refereed Article
Keywords:Panulirus ornatus, spiny lobster, phyllosoma, metabolism, chemical composition
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Fisheries - Aquaculture not elsewhere classified
Author:Smith, GG (Associate Professor Gregory Smith)
ID Code:80900
Year Published:2011
Web of Science® Times Cited:7
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2012-11-15
Last Modified:2017-11-03
Downloads:0

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