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A transcriptomic investigation of appetite-regulation and digestive processes in giant grouper Epinephelus lanceolatus during early larval development
Citation
Anderson, KC and Knuckey, R and Canepa, M and Elizur, A, A transcriptomic investigation of appetite-regulation and digestive processes in giant grouper Epinephelus lanceolatus during early larval development, Journal of Fish Biology, 93, (4) pp. 694-710. ISSN 0022-1112 (2018) [Refereed Article]
Copyright Statement
© 2018 The Fisheries Society of the British Isles
Abstract
The giant grouper Epinephelus lanceolatus is an ecologically vulnerable species with high market demand. However, efforts to improve larval husbandry are hindered by a lack of knowledge surrounding larval developmental physiology. To address this shortfall, a transcriptomic approach was applied to larvae between 1 and 14 days post hatch (dph) to characterise the molecular ontogenesis of genes that influence appetite and digestion. Appetite regulating factors were detected from 1 dph, including neuropeptide Y, nesfatin‐1, cocaine and amphetamine regulated transcript, cholecystokinin and pituitary adenylate cyclase activating peptide and the expression level of several genes changed sharply with the onset of exogenous feeding. The level of expression for proteases, chitinases, lipases and amylases typically followed one of two expression patterns, a general increase as development progressed, or an inverted U‐shape with maximal expression at c. 6 dph. Similarly, the tendency among both expression patterns was for the level of expression to increase around the time of mouth‐opening. There was also evidence to suggest the presence of putative isoforms for several digestion‐related genes. We have provided an insight into appetite‐regulation and digestive processes in groupers during early larval development and have developed a transcriptomic database that will aid future efforts to rear this species in an aquaculture setting.
Item Details
Item Type: | Refereed Article |
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Keywords: | grouper, larvae, development, gene expression, next-generation sequencing, digestion, ontogenesis |
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Fisheries sciences |
Research Field: | Aquaculture |
Objective Division: | Animal Production and Animal Primary Products |
Objective Group: | Fisheries - aquaculture |
Objective Field: | Aquaculture fin fish (excl. tuna) |
UTAS Author: | Anderson, KC (Dr Kelli Anderson) |
ID Code: | 128936 |
Year Published: | 2018 |
Web of Science® Times Cited: | 4 |
Deposited By: | Fisheries and Aquaculture |
Deposited On: | 2018-10-26 |
Last Modified: | 2018-11-28 |
Downloads: | 0 |
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