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Cited by 107Aquaculture Nutrition and GrowthMarine Bivalve and Aquaculture StudiesAquatic Invertebrate Ecology and Behavior

Evaluation of live microalgae and microalgal pastes as supplementary food for juvenile Pacific oysters (Crassostrea gigas)

McCausland, Malcolm A, Brown, Malcolm R, Barrett, Stephanie M, Diemar, John A, Heasman, Michael P·1999·Aquaculture
DOI 10.1016/s0044-8486(99)00018-6
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Abstract

Supplementary feeding was an effective method of enhancing growth of juvenile Pacific oysters (Crassostrea gigas) at a nursery site with low to moderate levels of natural phytoplankton (chlorophyll a, 0.68 +/- 0.29 microgram l(-1)). Over five experiments, oysters (500-700 micrometer) were fed supplementary rations of live microalgae or microalgal pastes. Supplementary diets were added to naturally occurring seston at a ration of 7 mg day(-1) ml(-1) oysters (initial oyster bed volume). These levels increased the total phytoplankton concentration by 50 to 207%. Variation in the environmental conditions between experiments influenced oyster growth rates. Increases in oyster growth rates were high in animals supplemented with Chaetoceros calcitrans (instantaneous growth rate, k = 0.062 day(-1)), Dunaliella tertiolecta (k = 0.059 day(-1)), Isochrysis sp. (strain T. ISO) (k = 059 day(-1)), an Australian isolate of Rhodomonas salina (k = 0.074 day(-1)) and pastes of Skeletonema costatum (k = 0.064 day(-1)) and C. calcitrans (k = 0.059 day(-1)). These rates were significantly greater than in the oysters fed a reference supplementary diet, Pavlova pinguis (range for experiments; k = 0.049-0.066 day(-1)) and in the control (i.e., non-supplementary fed) oysters (range for experiments, k = 0.034-0.043 day(-1)). P. pinguis was a more effective diet when it was grown under 24:0 h L:D (k = 0.066 day(-1)) than when grown under a 12:12 h L:D regime (k = 0.061 day(-1)). C. calcitrans paste (4-to 14-days-old) (k = 0.059 day(-1)) gave similar growth to live C. calcitrans (k = 0.062 day(-1)), which indicated the promise of pastes as an off-the-shelf alternative to live diets. The effectiveness of D. tertiolecta-a diet lacking the polyunsaturated fatty acids 20:5n-3 and 22:6n-3-indicated that the oysters received sufficient quantities in background phytoplankton to sustain a high growth rate. The essential nature of these fatty acids was demonstrated when all oysters retained higher percentages of 20:5n-3 and 22:6n-3 than other fatty acids. Initial cost estimates for supplementary feeding show that it will add 2 to 3% to juvenile oyster production costs during the nursery phase when oysters are 0.5 to approximately 3 mm in size.

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  • With a longer time of storage, the reactivation of microalgal paste cells will be delayed.

    “One issue that has to be resolved in paste preservation is that with a longer time of storage, the reactivation of cells will be delayed (McCausland et al., 1999;Raja et al., 2018).”

    From Potential of microalgae as a sustainable feed ingredient for aquaculture (2021) · cites this paper as McCausland et al., 1999

  • Compared to live microalgal diets, there was no nutrient loss during the concentrating, transportation, and preservation of the Skeletonema costatum and Chaetoceros calcitrans algal pastes.

    “When compared to live microalgal diets, there was no nutrient loss during the concentrating, transportation, and preservation of the Skeletonema costatum and Chaetoceros calcitrans algal pastes (McCausland et al., 1999).”

    From Potential of microalgae as a sustainable feed ingredient for aquaculture (2021) · cites this paper as McCausland et al., 1999

  • The most widely used technique for producing microalgal paste is centrifugation.

    “The most widely used technique for producing microalgal paste is centrifugation (McCausland et al., 1999).”

    From Potential of microalgae as a sustainable feed ingredient for aquaculture (2021) · cites this paper as McCausland et al., 1999

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Authors
McCausland, M. A., Brown, M. R., Barrett, S. M., Diemar, J. A., & Heasman, M. P.
Corresponding author
Brown, Malcolm R
Venue
Aquaculture
Publisher
Elsevier BV
Published
1999-04
Volume
174
Issue
3-4
Pages
323-342
ISSN
0044-8486 (ISSN-L)
DOI
10.1016/s0044-8486(99)00018-6
OpenAlex
W2043572910
Cited by
107
References
39
Citations by year
2026: 3 · 2025: 2 · 2024: 1 · 2023: 6 · 2022: 5 · 2021: 6 · 2020: 2 · 2019: 1 · 2018: 4 · 2017: 1 · 2016: 7 · 2015: 3 · 2014: 6 · 2013: 3 · 2012: 7
FWCI
8.76
Type
journal article
Language
en
Open access
closed
Licence
Locations
Aquaculture (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
  • Physical Sciences › Environmental Science › Global and Planetary Change › Marine Bivalve and Aquaculture Studies
  • Physical Sciences › Environmental Science › Ecology › Aquatic Invertebrate Ecology and Behavior
Keywords
Crassostrea gigas, supplementary feeding, Chaetoceros calcitrans, Dunaliella tertiolecta, Isochrysis, Rhodomonas salina, Skeletonema costatum, light regime, polyunsaturated fatty acids

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