Physiological status and nutritional condition of cultured juvenile Thenus australiensis over the moult cycle

Landman, Michael J.; Fitzgibbon, Quinn P.; Wirtz, Andrea; Codabaccus, Basseer M.; Ventura, Tomer; Smith, Gregory G.; Carter, Chris

doi:10.1016/j.cbpb.2020.110504

Cited by 10 publications

(8 citation statements)

References 67 publications

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“…Dietary Chol was the most significant factor in determining chemical composition and overall nutritional condition in juvenile T. australiensis . At ≥ 0.2% DM dietary Chol, whole-body composition was broadly consistent with that expected for juvenile T. australiensis over the moult 30 . However, at 0% DM dietary Chol, lobsters were found to be in poor nutritional condition at the end of the experiment, as indicated by lower whole-body CP, TL, GE and higher proportional ash content.…”

Section: Discussionsupporting

confidence: 71%

“…Cholesterol is considered an essential nutrient for decapod crustaceans, although the quantitative dietary requirements have been shown to vary for different species, developmental stages, life histories and in combination with other key nutrients 3 . Despite possessing key attributes desirable for experimentation and captive rearing 30 , 31 , slipper lobsters (Scyllaridae) remain a critically understudied decapod family. Consequently, little is known regarding the nutritional requirements of the slipper lobster, T. australiensis .…”

Section: Discussionmentioning

confidence: 99%

“…Consequently, little is known regarding the nutritional requirements of the slipper lobster, T. australiensis . While recent studies have started to explore their nutritional requirements and physiology in more detail 28 , 30 , 32 , 33 , the present study is the first to examine the importance of dietary Chol. For several crustacean species other than the slipper lobsters, there are some evidence that dietary PhosL may spare Chol 3 .…”

Section: Discussionmentioning

confidence: 99%

“…These observations are consistent with previous findings that dietary Chol can influence moult frequency, intermoult duration and development time in mud crab 13 , Chinese mitten crab, Eriocheir sinensis 15 and blue swimmer crab, Portunus pelagicus 12 . The moult cycle is a fundamental aspect of crustacean biology that is intimately linked with metamorphosis, growth and reproduction 30 , 34 – 36 . Since Chol is the principal precursor for the ecdysteroid moult hormones 4 , dietary Chol is expected to play an essential role in the regulation of moulting.…”

Section: Discussionmentioning

confidence: 99%

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Essentiality of dietary cholesterol and its interactions with phospholipid in juvenile slipper lobster (Thenus australiensis)

Landman,

Codabaccus,

Nichols

et al. 2024

Sci Rep

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This study was conducted to verify the essentiality of dietary cholesterol for early juvenile slipper lobster, Thenus australiensis (initial weight 4.50 ± 0.72 g, mean ± SD, CV = 0.16), and to explore the potential for interactions between dietary cholesterol and phospholipid. An 8-week experiment was conducted using six experimental feeds containing three supplemental cholesterol concentrations (0, 0.2 and 0.4% dry matter) at two supplemental phospholipid concentrations (0% and 1.0% dry matter). Dietary cholesterol concentrations of ≥ 0.2% resulted in up to threefold greater weight gain compared to 0% dietary cholesterol, but without any significant main or interactive dietary phospholipid effect. An interaction was observed for lobster survival with lowest survival (46%) recorded for combined 0% cholesterol and 0% phospholipid compared to every other treatment (71–100%). However, all surviving lobsters at 0% dietary cholesterol, regardless of dietary phospholipid level, were in poor nutritional condition. Apparent feed intake (AFI) was significantly higher at dietary cholesterol ≥ 0.2% but was lower for each corresponding dietary cholesterol level at 1% dietary phospholipid. This implied that the feed conversion ratio was improved with supplemental phospholipid. In conclusion, this study confirms the essential nature of dietary cholesterol and that dietary phospholipid can provide additional benefits.

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Section: Discussionsupporting

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Essentiality of dietary cholesterol and its interactions with phospholipid in juvenile slipper lobster (Thenus australiensis)

Landman,

Codabaccus,

Nichols

et al. 2024

Sci Rep

Self Cite

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“…Nutritional responses were assessed via Brix index (Hanna Refractometer H196801) and hepatopancreas index (the ratio of hepatopancreas wet weight to lobster wet weight [55,56]).…”

Section: Nutritional Health Responsementioning

confidence: 99%

Lobster Supply Chains Are Not at Risk from Paralytic Shellfish Toxin Accumulation during Wet Storage

Turnbull

Seger

Jolley

et al. 2021

Toxins

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Lobster species can accumulate paralytic shellfish toxins (PST) in their hepatopancreas following the consumption of toxic prey. The Southern Rock Lobster (SRL), Jasus edwardsii, industry in Tasmania, Australia, and New Zealand, collectively valued at AUD 365 M, actively manages PST risk based on toxin monitoring of lobsters in coastal waters. The SRL supply chain predominantly provides live lobsters, which includes wet holding in fishing vessels, sea-cages, or processing facilities for periods of up to several months. Survival, quality, and safety of this largely exported high-value product is a major consideration for the industry. In a controlled experiment, SRL were exposed to highly toxic cultures of Alexandrium catenella at field relevant concentrations (2 × 105 cells L−1) in an experimental aquaculture facility over a period of 21 days. While significant PST accumulation in the lobster hepatopancreas has been reported in parallel experiments feeding lobsters with toxic mussels, no PST toxin accumulated in this experiment from exposure to toxic algal cells, and no negative impact on lobster health was observed as assessed via a wide range of behavioural, immunological, and physiological measures. We conclude that there is no risk of PST accumulation, nor risk to survival or quality at the point of consumption through exposure to toxic algal cells.

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Changes in the physiology and chitin metabolism in cultured juvenile Panulirus ornatus across the moult cycle

Lewis,

Glendinning,

Codabaccus

et al. 2024

Aquaculture Reports

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Physiological status and nutritional condition of cultured juvenile Thenus australiensis over the moult cycle

Cited by 10 publications

References 67 publications

Essentiality of dietary cholesterol and its interactions with phospholipid in juvenile slipper lobster (Thenus australiensis)

Essentiality of dietary cholesterol and its interactions with phospholipid in juvenile slipper lobster (Thenus australiensis)

Lobster Supply Chains Are Not at Risk from Paralytic Shellfish Toxin Accumulation during Wet Storage

Changes in the physiology and chitin metabolism in cultured juvenile Panulirus ornatus across the moult cycle

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