Nutritional requirements and feeds development for post-larval spiny lobster: A review

Williams, Keith

doi:10.1016/j.aquaculture.2006.10.019

Cited by 81 publications

(77 citation statements)

References 104 publications

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“…Research effort over the past decades has considerably increased our knowledge about the nutritional requirements of spiny lobsters (Williams, 2007) but feeding most species with formulated diets on a least-cost basis is still a challenge. Spiny lobster growth performance is relatively poor when they are fed on dry formulated diets unless high levels of krill meal and/or krill hydrolysate are included (Smith et al, 2005;Barclay et al, 2006;Cox and Davis, 2009).…”

Section: Introductionmentioning

confidence: 99%

Dietary protein quality differentially regulates trypsin enzymes at the secretion and transcription level in Panulirus argus by distinct signaling pathways

Perera

Rodríguez-Viera

Rodríguez-Casariego

et al. 2012

Journal of Experimental Biology

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with the results of previous digestibility studies (Ward et al., 2003; Irving and Williams, 2007;Perera et al., 2010b). Poor protein use could be related to some impairment in digestive progression when lobsters are fed on pelleted diets (Simon and Jeffs, 2008;Simon, 2009).The aim of the present work was to assess the effect of feeding P. argus with different protein sources on trypsin expression and secretion. Our results demonstrate that trypsin enzymes are differentially regulated at the transcription and secretion level by ingested proteins. Additionally, we provide evidence that intact proteins, rather than small peptides or free amino acids, are the major signal eliciting the prandial secretory response in lobster, whereas SUMMARYThe effects of pelleted diets with different protein composition (fish, squid or soybean meals as main protein sources) on trypsin secretion and expression were studied in the lobster Panulirus argus. Trypsin secretion was shown to be maximal 4h after ingestion. At this time, fish-and squid-based diets induced trypsin secretion, as well as up-regulation of the major trypsin isoform at the transcription level. While fish-and squid-based diets elicited a prandial response, soybean-based diet failed to stimulate the digestive gland to secrete trypsin into the gastric fluid or induce trypsin expression above the levels observed in fasting lobsters. In vitro assays showed that intact proteins rather than protein hydrolysates stimulate trypsin secretion in the lobster. However, the signal for trypsin transcription appears to be different to that for secretion and is probably mediated by the appearance of free amino acids in the digestive gland, suggesting a stepwise regulation of trypsin enzymes during digestion. We conclude that trypsin enzymes in P. argus are regulated at the transcription and secretion level by the quality of dietary proteins through two distinct signaling pathways. Our results indicate that protein digestion efficiency in spiny lobsters can be improved by selecting appropriated protein sources. However, other factors like the poor solubility of dietary proteins in dry diets could hamper further enhancement of digestion efficiency.

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Section: Introductionmentioning

confidence: 99%

Dietary protein quality differentially regulates trypsin enzymes at the secretion and transcription level in Panulirus argus by distinct signaling pathways

Perera

Rodríguez-Viera

Rodríguez-Casariego

et al. 2012

Journal of Experimental Biology

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“…edwardsii (Crear et al 2002;Simon & James 2007). Apart from potential nutritional inadequacies, reduced food consumption owing to the low attractiveness and palatability of formulated diets has been suggested to account for the slow growth (Glencross et al 2001;Williams et al 2005;Williams 2007). …”

Section: Introductionmentioning

confidence: 98%

“…The development of effective formulated diets is fundamental to the future viability of spiny lobster aquaculture, attracting considerable research interest in the last decade (Williams 2007). Fresh mussel flesh has consistently supported better growth rates than formulated diets for spiny lobsters from temperate waters including, Jasus lalandii (Dubber et al 2004), Panulirus cygnus (Glencross et al 2001), and /.…”

Section: Introductionmentioning

confidence: 99%

Feed intake and its relation to foregut capacity in juvenile spiny lobster,Jasus edwardsii

Simon

2009

New Zealand Journal of Marine and Freshwater Research

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Limited food consumption has been identified as a possible reason for the poor growth in spiny lobsters raised on dry formulated diets. Food intake was determined for different sized juveniles (20-80 g) of the spiny lobster, Jasus edwardsii, fed either fresh mussel flesh or a dry formulated diet for 0.5-5.0 h every 48 h. In addition, the foregut capacities of lobsters of various sizes were measured to relate food intake to foregut fullness. Food intake was relatively rapid on both diets (1 h) and reached mean dry matter threshold values (mean satiation rations) that were related to foregut capacity. Foregut capacity increased linearly with body weight (BW; 10-110 g) and restricted dry matter intake of lobsters to an average of 0.8-1.2% BW regardless of diet. Both wet and dry diets, when fed in equal amount of dry matter, were found to have similar wet weights in the foregut after ingestion. Allowing lobsters more time to feed (2 to 5 h) had no significant effect on mean dry matter intake because the foregut filled to maximum capacity within 1 h. The results suggest that /. edwardsii juveniles have a small foregut capacity (2.5-3% BW) that limits food intake when diets are fed every 48 h. There appears to be no advantage in dry matter intake by providing the nutrient-dense dry formulated diet of this study compared with mussel M07068; flesh. Formulated diets would need to be fed more frequently and be highly digestible if they are to deliver sufficient nutrition to maximise growth for commercial aquaculture.

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“…Diseases are of a minor importance in lobster's post harvest handling as it is currently practice worldwide for live export, but could be of importance in overseas lobster industries where harvested stocks are held for long periods in ponds for grow-out [10]. Growing of wild-caught postlarvae or juvenile spiny lobsters to market size is an emerging aquaculture industry with the tropical (Panulirus ornatus) and the Caribbean (P. argus) spiny lobster being the best candidates for aquaculture [11]. Several aspects of nutrition and grow-out methods for P. argus are now being studied [12], but unlike other crustaceans, immunity in spiny lobster remains poorly studied.…”

Section: Introductionmentioning

confidence: 99%

Phenoloxidase activity in the hemolymph of the spiny lobster Panulirus argus

Perdomo-Morales¹,

Montero-Alejo²,

Perera

et al. 2007

Fish & Shellfish Immunology

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Nutritional requirements and feeds development for post-larval spiny lobster: A review

Cited by 81 publications

References 104 publications

Dietary protein quality differentially regulates trypsin enzymes at the secretion and transcription level in Panulirus argus by distinct signaling pathways

Dietary protein quality differentially regulates trypsin enzymes at the secretion and transcription level in Panulirus argus by distinct signaling pathways

Feed intake and its relation to foregut capacity in juvenile spiny lobster,Jasus edwardsii

Phenoloxidase activity in the hemolymph of the spiny lobster Panulirus argus

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