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Effect of nitrite on growth and oxygen consumption for juvenile greenlip abalone, Haliotis laevigata Donovan

journal contribution
posted on 2023-05-16, 11:07 authored by Harris, JO, Maguire, GB, Edwards, SJ, Hindrum, SM
Juvenile greenlip abalone, Haliotis laevigata Donovan (mean whole weight, 5.61 g) were grown for 2-3 mo in bioassay tanks. Specific growth rate (SGR), measured on a whole-weight (p < 0.05) or shell length (p < 0.01) basis, was significantly affected by nitrite (NaNO 2). Modeling of the whole weight indicated relatively uniform growth depression (average SGR weight of 67.2% relative to the control, 0.024 mg of NO 2-N L -1), regardless of concentration in the range of 0.56-7.80 mg of NO 2-N L -1. This pattern of growth depression, which is independent of nitrite concentration once growth is reduced relative to controls, has been recorded by other researchers for penaeid shrimp and freshwater crayfish. SGR data for shell length exhibited a similar pattern, except that much more severe growth depression (average SGR length of 17.7% relative to the control) was recorded for the highest concentration (7.80 mg NO 2-N L -1). Compared with several aquatic species studied by other authors, greenlip abalone are sensitive to nitrite on a growth basis. Oxygen consumption declined sharply with increasing nitrite concentration (y = 82.452.e(-0.154-x); range, 0.025-7.72 mg of NO 2-N L -1). However, neither food consumption (as a percentage of initial biomass, corrected for mortality) nor survival was significantly affected by nitrite concentration (p > 0.05).

History

Publication title

Journal of Shellfish Research

Volume

16

Pagination

395-401

ISSN

0730-8000

Department/School

Institute for Marine and Antarctic Studies

Publisher

Natl Shellfisheries Assoc

Place of publication

C/O Dr. Sandra E. Shumway, Natural Science Division, Southampton College, Southampton, USA, Ny, 11968

Repository Status

  • Restricted

Socio-economic Objectives

Fisheries - aquaculture not elsewhere classified

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