Culture of triploid greenlip abalone (Haliotis laevigata Donovan) to market size: Commercial implications

Dunstan, Graeme A.; Elliott, Nicholas; Appleyard, Sharon A.; Holmes, Bronwyn H.; Conod, Natalie; Grubert, Mark A.; Cozens, Mark A.

doi:10.1016/j.aquaculture.2007.06.023

Cited by 18 publications

(6 citation statements)

References 35 publications

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“…Wet weights for other abalone species have also been found to be directly proportional to approximately the cube of the length; 3.01 for Haliotis discus hannai (Sakai 1962), 3.20 and 2.99 for Haliotis midae (Newman 1968; Britz et al. 1997), 2.95 and 3.07 for Haliotis laevigata (Reaburn & Edwards 2003; Dunstan et al. 2007), 3.04 for Haliotis tuberculata (Mgaya 1995), as were dry weights; 3.11 for Haliotis tuberculata (Peck et al.…”

Section: Methodsmentioning

confidence: 99%

A simple model for the determination of the relative utilization efficiency of protein by blacklip abalone (Haliotis rubraLeach)

Dunstan

2010

Aquaculture Nutrition

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A 6-week growth rate trial of 6.7 mm ± 1.35 SD long blacklip abalone (Haliotis rubra) fed one of four graded protein feeds (26%, 32%, 37%, 45% crude protein, CP) resulted in a maximum average growth rate of 81 lm day )1 (percentage daily weight gain of 5.2% day )1 ) with the 45% CP diet. Based on the results, a new, simple, non-destructive method to calculate the relative utilization efficiencies (RUE) of nutrients is presented to estimate the relative contributions of a nutrient to growth, body maintenance and the excess used for energy. Calculations of RUE of protein estimated that at the maximum growth rate, 59% of the CP was responsible for growth, while 31% was used for body maintenance and an excess of 10% was lost and presumably catabolized for energy and carbohydrate anabolism. At the %CP where the highest proportion of CP was used for growth, i.e. the maximum RUE of protein for growth (slightly higher at 62%), 35% was used for body maintenance and only 3% of the excess was lost to energy. KEY WORDS

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Section: Methodsmentioning

confidence: 99%

A simple model for the determination of the relative utilization efficiency of protein by blacklip abalone (Haliotis rubraLeach)

Dunstan

2010

Aquaculture Nutrition

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“…The protocol can be applied to larger animals for which the isolation of nuclei and metaphase chromosomes from tissues are difficult. Individual ploidy verification can be performed quickly and regularly and could facilitate in studying, for example, any reverting from the triploid state to the diploid state over time (Dew et al 2003, Dunstan et al 2007). …”

Section: Discussionmentioning

confidence: 99%

A microsatellite panel for triploid verification in the abaloneHaliotis midae

Slabbert

Prins

Brink

2010

African Journal of Marine Science

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A method for ploidy verification of triploid and diploid Haliotis midae was developed using molecular microsatellite markers. In all, 30 microsatellite loci were tested in control populations. A final micro satellite multiplex consisting of seven markers were optimised and a complete protocol is reported. This protocol was successfully applied in identifying the ploidy levels of 42 ploidy-unknown abalone, showing the utility of microsatellite markers as tools for verifying the ploidy of individual abalone. The protocol can be applied in larger animals for which the isolation of nuclei and metaphase chromosomes from tissues is difficult.

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“…These farms generally culture one of three species: black lip (Haliotis rubra), greenlip (H. laevigata) or hybrid abalone (H. rubra x H. laevigata). However, as in other countries, the expansion of abalone aquaculture in Australia is hampered by slow growth, requiring about 4 to 5 years to reach a marketable size of 80-100 mm shell length (Dunstan et al, 2007). Acknowledging the long culture period, the research into abalone has been focused on finding alternative ways to enhance the growth rate of abalone.…”

Section: Introductionmentioning

confidence: 99%

Isolation of alginate lyase-producing bacteria and screening for their potential characteristics as abalone probionts.

et al. 2017

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This study is aimed at the isolation and screening of alginate lyase‐producing bacteria from the gastrointestinal tracts of hybrid abalone, Haliotis rubra x H. laevigata, as probiotic candidates. Six bacterial isolates were detected to produce alginate lyase. Of these, the isolate with the highest alginate‐lyase activity was identified as Enterobacter ludwigii strain EN‐119, displaying 99% similarity of 16S rDNA sequence. Further assays indicated that E. ludwigii showed good viability and stability when it was incorporated into manufactured pellets and stored at 4°C for 7 days. The isolate also had high tolerance of high salinity (35 mg/L), low pH in simulated stomach juice (5) and to simulated intestinal juice containing surfactants such as bile salts and gastric enzymes (pepsin and trypsin). Additionally, a short, preliminary study indicated that supplementation of E. ludwigii via manufactured pellets improved the total weight gain and specific growth rate of hybrid abalone. These results suggest that E. ludwigii is a potential probiont for shortening the culture period of hybrid abalone.

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Culture of triploid greenlip abalone (Haliotis laevigata Donovan) to market size: Commercial implications

Cited by 18 publications

References 35 publications

A simple model for the determination of the relative utilization efficiency of protein by blacklip abalone (Haliotis rubraLeach)

A simple model for the determination of the relative utilization efficiency of protein by blacklip abalone (Haliotis rubraLeach)

A microsatellite panel for triploid verification in the abaloneHaliotis midae

Isolation of alginate lyase-producing bacteria and screening for their potential characteristics as abalone probionts.

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