Ventral Videographic Assessment of the Feeding Behavior of Juvenile Greenlip [Haliotis laevigata(Donovan, 1808)] and Hybrid (H. laevigata×Haliotis rubra) Abalone in Response to Dietary and Temperature Manipulation

Currie, Krishna-Lee; Davidson, Hannah; Bansemer, Matthew S.; Harris, James O.; Stone, David A.

doi:10.2983/035.035.0310

Cited by 6 publications

(5 citation statements)

References 19 publications

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“…Notably, several on-farm observations have revealed that Australian hybrid abalone exhibited superior growth, meat yield, and feed utilisation compared to greenlip abalone [21][22][23][24]. Furthermore, these observations have been consistent across a range of diet types and water temperatures [25]. Yet, further improvements in growth performance for Australian hybrid abalone are achievable.…”

Section: Introductionmentioning

confidence: 99%

Optimal Dietary Protein Requirement of Subadult Australian Hybrid Abalone (Haliotis rubra × Haliotis laevigata) at Different Rearing Temperatures

Hassan

Mock

Searle

et al. 2023

Aquaculture Research

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Australian abalone aquaculture is characterised by a prolonged culture period and slow and variable growth, and abalone is cultured in fluctuating water temperatures ranging between 10 and 25°C with distinct seasons. Temperature is a crucial environmental factor influencing abalone’s physiology and energetics, leading to a change in nutritional requirements. However, feeds are generally formulated to match the nutritional requirements at their optimal temperature. Hence, there is a need to optimise dietary protein levels to match temperature-specific requirements during extreme conditions (winter and summer). Given this, a growth trial evaluating five experimental feeds consisting of graded protein inclusion levels (320, 350, 380, 410, and 440 g·kg−1) was conducted on subadult hybrid abalone (Haliotis rubra × H. laevigata) at three different temperatures reflecting winter (12°C), summer (22°C), and the annual average water temperature (17°C) for 143 days. At lower water temperature (12°C), there was a marginal improvement in growth performance as dietary protein levels increased from 320 to 440 g·kg−1. However, at higher water temperatures (when the culture water temperature is above 17°C), there was a significant improvement in growth performance as dietary protein levels increased from 320 to 440 g·kg−1 as evidenced by an improved weight gain, specific growth rate, and feed conversion ratio. Furthermore, increasing dietary protein levels did not compromise the nutritional quality of the abalone tissue at all three tested temperatures. Therefore, during periods of higher water temperatures, feeding Australian hybrid abalone with a relatively high dietary protein level (410 g·kg−1) is expected to result in improved growth, shorter culture duration, and profit maximisation.

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Section: Introductionmentioning

confidence: 99%

Optimal Dietary Protein Requirement of Subadult Australian Hybrid Abalone (Haliotis rubra × Haliotis laevigata) at Different Rearing Temperatures

Hassan

Mock

Searle

et al. 2023

Aquaculture Research

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“…These organisms feed by browsing, and their ability to ingest foods depends on their radula type (i.e., rhipidoglossan in H. fulgens) (Fitzgeral, 2008). In their natural environments, abalone feed on algae stipes and thus tend to consume foods that are not overly rigid (Fitzgeral, 2008;Currie et al, 2016). In this study, the ABKELP control diet exhibited the highest toughness (> 700 g cm -2 ) when compared to those of the formulated diets (MP, EA, and MPEA).…”

Section: Discussionmentioning

confidence: 58%

“…When compared with the attraction to fresh E. arborea (the algae used by cooperatives in northern Baja California Sur), the juvenile H. fulgens in this study showed higher attraction at 24 h to the control food ABKELP, followed by their attraction to the EA and MPEA diets. The lower attractability recorded for fresh E. arborea may be due to the formulated diets (MP, EA, MPEA, and ABKELP) containing fish and soybean meal and other ingredients (e.g., oils, amino acids, and by-products) that are known to stimulate attraction (O' Mahoney et al, 2014;Bansemer et al, 2016). Our formulated diets contained hydrolyzed algae.…”

Section: Resultsmentioning

confidence: 96%

“…Attractability is the attraction that food generates toward an organism through the release of chemical compounds that are detected by sense organs (Britz et al, 1994). When optimizing abalone cultivation, it is important to develop diets that contain attractive ingredients that stimulate food intake, which improves weight gain, and that favor abalone quality (especially of the foot) (Bansemer et al, 2016;Denti et al, 2016). When compared with the attraction to fresh E. arborea (the algae used by cooperatives in northern Baja California Sur), the juvenile H. fulgens in this study showed higher attraction at 24 h to the control food ABKELP, followed by their attraction to the EA and MPEA diets.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of the acceptability of diets formulated with hydrolyzed algae for juvenile abalone of Haliotis fulgens.

Villa-Arce¹

2022

Hidrobiológica

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“…Furthermore, various studies have explored how abalones, including other species, respond to different environmental variables. Some of these studies have investigated responses to factors such as light quality (as shown in Gao et al's [7] study) and food availability [8,9]. Additionally, there have been efforts to document the causes associated with different stressors, such as high temperatures, elevated ammonium content, low levels of dissolved oxygen, and high levels of other environmental factors, [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Branchial Motion Assessment in Abalone Using Photoplethysmography

Bautista López,

Yáñez Mendiola,

Sicard González

2023

Aquaculture Research

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The abalone, a gastropod mollusk belonging to the Haliotidae family, has been a subject of research with a focus on its behavior in response to various environmental factors, including temperature fluctuations and hypoxia. While existing studies have primarily explored abalone behavior in relation to environmental changes, there remains a significant amount to be discovered regarding their behavioral patterns. There are studies in which recordings of readings have been made (indirect methods) of the heart rate of the abalone since it is believed that it is one of the parameters affected due to the changes in temperature and dissolved oxygen in its environment. The main disadvantage of some procedures to measure heart rate in abalone is that an incision is made near the heart, through this incision the measurement is made using the photoplethysmography technique. Another parameter that is affected by these changes (temperature and hypoxia) is respiratory rate. Temperature is an important factor that can reduce oxygen solubility and thus alter abalone respiration; so in this work, we propose to use the technique of photoplethysmography: a method involving the measurement of changes in volume within a biological organ, which offers a unique opportunity to monitor these changes. We adapt this technique to measure gill movements in abalone, a critical indicator of respiratory activity in these marine mollusks. By utilizing a pulse oximetry setup and synchronous detection, we establish an innovative approach to gill movement analysis. This approach employs a pulse train and synchronous demodulation technique, the train of pulses is guided through an optical fiber to one of the respiratory orifices of the abalone to effectively detect and analyze the gill movements of abalone. Additionally, the role of frequency of its gill movements is highlighted as another critical variable of interest within the broader study of Haliotis fulgens, shedding light on the multifaceted nature of abalone behavior and responses to their surroundings. This research contributes to a deeper understanding of abalone physiology and behavior, offering insights into their adaptation to changing environmental conditions.

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Ventral Videographic Assessment of the Feeding Behavior of Juvenile Greenlip [Haliotis laevigata(Donovan, 1808)] and Hybrid (H. laevigata×Haliotis rubra) Abalone in Response to Dietary and Temperature Manipulation

Cited by 6 publications

References 19 publications

Optimal Dietary Protein Requirement of Subadult Australian Hybrid Abalone (Haliotis rubra × Haliotis laevigata) at Different Rearing Temperatures

Optimal Dietary Protein Requirement of Subadult Australian Hybrid Abalone (Haliotis rubra × Haliotis laevigata) at Different Rearing Temperatures

Evaluation of the acceptability of diets formulated with hydrolyzed algae for juvenile abalone of Haliotis fulgens.

Branchial Motion Assessment in Abalone Using Photoplethysmography

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