Hatchery Conditions do not Negatively Impact Respiratory Response of Early Life-Stage Development in Australian Hybrid Abalone

Alter, Katharina; Andrewartha, Sarah J.; Elliott, Nicholas

doi:10.2983/035.035.0303

Cited by 6 publications

(12 citation statements)

References 24 publications

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“…For example, hybrid MO 2 at 17°C was 91 pmol/h/ind for the December population and 118 pmol/h/ind for the March population. Differences in _ MO 2 between larval populations of Haliotis rubra/Haliotis laevigata hybrids from the same farm have been reported previously (Alter et al 2016). Oxygen consumption rates ( _ MO 2 ) varied between 99 and 146 pmol/h/ind at 16°C and it was suggested that the differences may be due to heritable and/or maternal variation (Alter et al 2016).…”

Section: Discussionmentioning

confidence: 94%

“…Oxygen consumption rate ( _ MO 2 ) of hybrids is dependent on developmental stage and it has been suggested that differences in _ MO 2 across the different stages (embryonic, trochophore larvae, veliger larvae, and settling larvae) are attributable to differences in activity level (Alter et al 2016). Thus, only veliger larvae were chosen in the present study to target a developmental stage at which the mode of locomotion is stable.…”

Section: Animal Rearingmentioning

confidence: 99%

“…The _ MO 2 data were collected over 3 days because it was logistically impractical to measure _ MO 2 at all temperatures within 1 day. It was not expected that larval _ MO 2 would vary across this time because hybrid larvae maintain constant _ MO 2 during their 3 days as veligers at a constant temperature of 16°C (Alter et al 2016). However, two experimental considerations further minimized the potential effect of experimental day on _ MO 2 .…”

Section: Oxygen Consumption Ratementioning

confidence: 99%

“…The number of individuals per chamber varied between 56 and 1594 ind/ml (Table 1). A previous study has shown that different densities throughout this range do not influence larval abalone _ MO 2 when calculated per individual (Alter et al 2016). Percentage air saturation was measured until oxygen dropped below 70% O 2 sat (typically ;2 h at 32°C and ;5 h at 12°C).…”

Section: Oxygen Consumption Ratementioning

confidence: 99%

“…Methods for measuring _ MO 2 are described by Alter et al 2016. In brief, respiration chambers consisted of 24 wells (each 2.7 ml) within a galvanized aluminum plate.…”

Section: Oxygen Consumption Ratementioning

confidence: 99%

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Thermal Preference Increases During Larval Development of Pure and Hybrid Abalone

Alter

Andrewartha

Elliott

2017

Journal of Shellfish Research

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Temperature is one of the main factors influencing biological processes of ectothermic species. An optimum temperature of 16-18°C has been suggested for the development of early life stages of temperate Australian abalone, yet there are little physiological or behavioral data to support this suggestion. This study examines the acute thermal preferences (T pref ), swimming speeds (U), and oxygen consumption rates ( _ MO 2 ) of veliger larvae of blacklip abalone [Haliotis rubra (Leach, 1814)], greenlip abalone [Haliotis laevigata (Donovan, 1808)], and their interspecies hybrid. Thermal preference and U were measured in a thermal gradient with temperatures ranging from 12°C to 25°C, and _ MO 2 was measured at 4-7 temperatures between 12°C and 32°C. Thermal preference increased in all three groups of abalone during development from a T pref of 16°C in 1-day-old early veligers to a T pref of 20°C in 3-day-old late veligers. Swimming speed increased with temperature in all three groups of abalone and increased with age in H. rubra and hybrids but not in H. laevigata. Veliger _ MO 2 increased throughout the ecologically relevant temperature range in all three abalone groups. Higher temperatures were examined in hybrids, and it was found that _ MO 2 reached a peak at 25°C and declined thereafter. These results align with the temperatures that veligers may experience in their natural habitat and provide support that current temperatures maintained at Australian aquaculture hatcheries are within optimal ranges for larval performance.

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Section: Discussionmentioning

confidence: 94%

Section: Animal Rearingmentioning

confidence: 99%

Section: Oxygen Consumption Ratementioning

confidence: 99%

Section: Oxygen Consumption Ratementioning

confidence: 99%

“…Methods for measuring _ MO 2 are described by Alter et al 2016. In brief, respiration chambers consisted of 24 wells (each 2.7 ml) within a galvanized aluminum plate.…”

Section: Oxygen Consumption Ratementioning

confidence: 99%

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Thermal Preference Increases During Larval Development of Pure and Hybrid Abalone

Alter

Andrewartha

Elliott

2017

Journal of Shellfish Research

Self Cite

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Carryover effects of embryonic hypoxia exposure on adult fitness of the Pacific abalone

Dai,

Shen,

et al. 2024

Environmental Research

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Divergent Carry-Over Effects of Hypoxia during the Early Development of Abalone

Shen

Gao

Xiao

et al. 2022

Environ. Sci. Technol.

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After being exposed to environmental stimuli during early developmental stages, some organisms may gain or weaken physiological regulating abilities, which would have long-lasting effects on their performance. Environmental hypoxia events can have significant effects on marine organisms, but for breeding programs and other practical applications, it is important to further explore the long-term physiological effects of early hypoxia exposure in economically significant species. In this study, the Pacific abalone Haliotis discus hannai was exposed to moderate hypoxia (∼4 mg/L) from zygote to trochophora, and the assessments of hypoxia tolerance were conducted on the grow-out stage. The results revealed that juvenile abalones exposed to hypoxia at the early development stages were more hypoxiatolerant but with slower weight growth, a phenomenon called the tradeoff between growth and survival. These phenotypic effects driven by the hypoxia exposure were explained by strong selection of genes involved in signal transduction, autophagy, apoptosis, and hormone regulation. Moreover, long non-coding RNA regulation plays an important role modulating carry-over effects by controlling DNA replication and repair, signal transduction, myocardial activity, and hormone regulation. This study revealed that the ability to create favorable phenotypic differentiation through genetic selection and/or epigenetic regulation is important for the survival and development of aquatic animals in the face of rapidly changing environmental conditions.

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Hatchery Conditions do not Negatively Impact Respiratory Response of Early Life-Stage Development in Australian Hybrid Abalone

Cited by 6 publications

References 24 publications

Thermal Preference Increases During Larval Development of Pure and Hybrid Abalone

Thermal Preference Increases During Larval Development of Pure and Hybrid Abalone

Carryover effects of embryonic hypoxia exposure on adult fitness of the Pacific abalone

Divergent Carry-Over Effects of Hypoxia during the Early Development of Abalone

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