Heritability of growth traits in South African Abalone (Haliotis midae L.) using the ‘internal reference’ method

Difford, Gareth Frank; Vlok, Arnoldus Christiaan; Rhode, Clint; Brink, D.

doi:10.1016/j.aquaculture.2016.10.042

Cited by 11 publications

(3 citation statements)

References 31 publications

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“…Weights were recorded (to the nearest 0.01 g) using a digital scale after placing the abalone on a paper towel to remove excess water. Maximum shell lengths were measured according to established methods (Gareth et al, 2017;Hamilton et al, 2022), with calipers (to the nearest 0.1 mm). The following equation was used to calculate body weight ratio: BWR = W=SL Here, the body weight ratio (BWR) was calculated using weight (W) and shell length (SL).…”

Section: Calculationsmentioning

confidence: 99%

Temperature-induced variations in dulse (Devaleraea mollis) nutrition provide indirect benefits on juvenile red abalone (Haliotis rufescens) Growth

Rizzo,

Beckert,

Boles

et al. 2024

Front. Mar. Sci.

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Changes in climate conditions can have cascading repercussions for organismal performance and survival, altering the productivity of aquatic systems. While numerous studies have examined the direct effects of temperature on species fitness, fewer studies have analyzed how individual impacts may translate to downstream primary consumers. Temperature-induced changes in the nutritional quality of seaweed may cause critical shifts in energy and nutrient availability for these consumers. A multifaceted experiment was conducted to assess the indirect impacts of California’s coastal climate conditions on abalone growth. This experiment fed juvenile red abalone (Haliotis rufescens) of two different size classes in ambient water conditions with the seaweed dulse (Devaleraea mollis), conditioned at 13°C, 15°C, and 17°C for 92 days. Nutritional analyses revealed significantly higher protein and nitrogen content in the 17°C dulse culture than in the 15°C and 13°C cultures, and no significant differences in carbohydrates. Furthermore, analyses on body weight ratio and condition factor indicate that juvenile red abalone of smaller size display significantly better growth and condition when fed dulse cultured at higher temperatures. Differences between size classes suggest that temperature changes, and subsequent shifts in the nutritional composition of dulse, may have greater impacts on smaller, younger red abalone.

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Section: Calculationsmentioning

confidence: 99%

Temperature-induced variations in dulse (Devaleraea mollis) nutrition provide indirect benefits on juvenile red abalone (Haliotis rufescens) Growth

Rizzo,

Beckert,

Boles

et al. 2024

Front. Mar. Sci.

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“…The individual deviations seen from the performance of cardiac indexes, stomach, meat, bone, body weight, body height, etc. could be used as additive variants which were further compared or converted to the ideal size or character could be used as parameter for selection program which then sought genetic distance and cluster [122,123]. In addition, the performance of the indexes for selection should be attempted on quantitative traits that could be measured at the time of the fish or the individual's life and not when it was switched off.…”

Section: Selection and Breeding Programmentioning

confidence: 99%

The Genetic Research Methods and its Role in Aquaculture on Indonesia

L¹

2018

IJOAC

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Successful development of aquaculture is largely determined by the seed supply of both the quality and quantity of the seed. Seed quality is influenced by the quality of the mother (genetic factors) and environmental factors (water quality, food, and disease). Improved parent quality through the improvement of both qualitative and quantitative genetic traits that can be done through the selection of traits or characteristics of prospective mothers, as well as avoiding the occurrence of inbreeding that causes heritabilities decline. The purpose of writing to review the results of genetic studies that have been applied in the field of aquaculture in Indonesia. In this article, the study included the following: basic genetic concepts and theories, genetic research methods, and their roles and functions in the field of aquaculture.

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“…In South Africa, the locally produced abalone, Haliotis midae , is an economically important aquaculture species, favoured internationally for its large size and organoleptic properties (Difford, Vlok, Rhode, & Brink, ). Prior to animal export, slow and irregular growth rates are some of the major concerns.…”

Section: Introductionmentioning

confidence: 99%

Effect of proline-enriched abalone feed on selected metabolite levels of slow-growing adultHaliotis midae

et al. 2019

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Abalone is currently considered South Africa's most successfully produced aquaculture export product, with a 76% share of the total value generated by the aquaculture sector. A major risk factor for this sector is slow growth rates experienced during farming. Abalone feeds are often supplemented with amino acids in an attempt to enhance abalone growth. This is a first investigation of the effect of added proline to standard abalone feed, on the metabolite profile of slow‐growing abalone. A targeted liquid chromatography tandem mass spectrometry metabolomics research approach was followed to recognise the metabolic response of abalone showing slower growth performance. The addition of proline to the standard abalone diet was found to serve as a substrate for amino acid catabolism in slower growing abalone, by means of proline breakdown to assist with energy production via the tricarboxylic acid cycle. Other amino acids and urea cycle intermediates, that is, arginine, asparagine, ornithine and creatine further support energy production via the action of protein catabolism in slow‐growing abalone. Additionally, the importance of understanding how abalone respond metabolically to modified feed highlights the use of metabolomics to answer abalone aquaculture farming questions.

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Heritability of growth traits in South African Abalone (Haliotis midae L.) using the ‘internal reference’ method

Cited by 11 publications

References 31 publications

Temperature-induced variations in dulse (Devaleraea mollis) nutrition provide indirect benefits on juvenile red abalone (Haliotis rufescens) Growth

Temperature-induced variations in dulse (Devaleraea mollis) nutrition provide indirect benefits on juvenile red abalone (Haliotis rufescens) Growth

The Genetic Research Methods and its Role in Aquaculture on Indonesia

Effect of proline-enriched abalone feed on selected metabolite levels of slow-growing adultHaliotis midae

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