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David S. Francis
Deakin University
Polyunsaturated fatty acidFish oilFatty acidBiochemistryBiology
76Publications
25H-index
1,577Citations
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Publications 78
Newest
#1Alexander J. Basford (SCU: Southern Cross University)
#2Benjamin Mos (SCU: Southern Cross University)H-Index: 9
Last. Symon A. Dworjanyn (SCU: Southern Cross University)H-Index: 27
view all 6 authors...
Abstract High mortality during larval rearing is a persistent bottleneck in finfish aquaculture and is often caused by inadequate nutrition. Nutritional deficiencies in live feeds are usually overcome by enrichment with commercial lipid emulsions; however, enriching live feeds using microalgae may be more effective. This study investigated the efficacy of the microalga Proteomonas sulcata as a live feed enhancement for rearing larvae of the wide-band anemonefish, Amphiprion latezonatus. We found...
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#1Xiaowen Long (Shanghai Ocean University)H-Index: 3
#2Qing Guo (Shanghai Ocean University)
Last. Xugan Wu (Shanghai Ocean University)H-Index: 15
view all 6 authors...
Abstract The fattening of immature female Chinese mitten crab (Eriocheir sinensis) with high quality diets is an effective mechanism for improving ovarian development and nutritional quality. This study investigated the ovarian development and nutritional quality of female E. sinensis during an 80-day fattening period. The results showed that the gonadosomatic index (GSI) and total edible yield of female E. sinensis increased in a stepwise manner over the course of the fattening period, in synch...
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#1Thomas S. Mock (Deakin University)H-Index: 1
#2David S. Francis (Deakin University)H-Index: 25
Last. Giovanni M. Turchini (Deakin University)H-Index: 37
view all 8 authors...
Abstract Elucidating the specific effects of diet on the fatty acid composition in Atlantic salmon (Salmo salar), particularly health beneficial omega-3 long-chain polyunsaturated fatty acids (n-3 LC PUFA), remains an area of intense commercial interest given the increasing market restrictions placed on the supply of fishmeal and fish oil. The present study conducted a systematic review and subsequent analysis of published nutritional data from long-term growth trials using post-smolt Atlantic s...
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#1Jessica A. Conlan (Deakin University)H-Index: 4
#2Craig Humphrey (Australian Institute of Marine Science)H-Index: 22
Last. David S. Francis (Deakin University)H-Index: 25
view all 5 authors...
Abstract Developing an optimal heterotrophic feeding regime has the potential to improve the growth and overall health of captive corals. This study evaluated the efficacy of seven unique feeding strategies for Acropora loripes, Acropora millepora, and Acropora tenuis nubbins: a novel, micro-bound diet (ATF), a novel, dissolved diet rich in long-chain polyunsaturated fatty acids (LC-PUFA) (LONG), a novel, dissolved diet lacking in LC-PUFA (SHORT), a phytoplankton diet of Isochrysis galbana (ALG)...
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#1David S. Francis (Deakin University)H-Index: 25
#2Benjamin J. Cleveland (Deakin University)H-Index: 2
Last. Jessica A. Conlan (Deakin University)H-Index: 4
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Abstract The Murray cod (Maccullochella peelii peelii), an iconic Australian freshwater fish, is subject to a small but growing aquaculture sector in Australia. Optimal larviculture techniques for this species have yet to be established, particularly with regard to the nutritional quality of starter diets. As such, optimisation of current Murray cod hatchery practices and feeding regimes is essential to maximize the production of high quality larvae and expand commercial aquaculture prospects. T...
1 CitationsSource
#1Meimei Liu (Shanghai Ocean University)H-Index: 1
#2Qiangmei Feng (Shanghai Ocean University)
Last. Xugan Wu (Shanghai Ocean University)H-Index: 15
view all 6 authors...
Abstract Tamoxifen (TAM) is an antiestrogenic agent and can enter the aquatic environment in wastewater. It has been reported that TAM can induce hepatic steatosis in vertebrates, however, the effects of TAM exposure on lipid metabolism of hepatopancreas in crustaceans remains unclear. In this study, four TAM concentrations (0, 6.7, 13.4 and 20 μg g−1 crab body weight) were injected into the swimming-leg of swimming crabs Portunus trituberculatus, as a means of evaluating the effects of TAM on t...
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A more efficient utilisation of marine-derived sources of dietary n -3 long-chain PUFA ( n -3 LC PUFA) in cultured Atlantic salmon ( Salmo salar L.) could be achieved by nutritional strategies that maximise endogenous n -3 LC PUFA synthesis. The objective of the present study was to quantify the extent of n -3 LC PUFA biosynthesis and the resultant effect on fillet nutritional quality in large fish. Four diets were manufactured, providing altered levels of dietary n -3 substrate, namely, 18 : 3 ...
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1 CitationsSource
#1Thomas S. Mock (Deakin University)H-Index: 1
#2David S. Francis (Deakin University)H-Index: 25
Last. Giovanni M. Turchini (Deakin University)H-Index: 37
view all 7 authors...
Abstract A common strategy for aquafeed manufacturers has been the utilisation of relatively large amounts of terrestrial, both animal and plant, oil sources to produce diets with a high energy content. The provision of high fat diets is aimed at promoting the utilisation of energy from lipid, thus increasing the amount of dietary protein used for tissue synthesis. However, in recent years the cost of marine sourced dietary lipids has risen, at the same time, farming operations are under increas...
1 CitationsSource
#1Melissa M. RockerH-Index: 3
#2Carly D. Kenkel (SC: University of Southern California)H-Index: 13
Last. Line K. Bay (JCU: James Cook University)H-Index: 23
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Abstract To investigate plasticity in biochemical and physiological health attributes of corals, identical colony fragments of the coral Acropora tenuis, from two inshore populations, were exposed to native and novel environmental regimes. Variation in global gene expression (GE) and lipid and fatty acid (FA) composition of surviving colony fragments were quantified after four months. Major FA classes, with the exception of short-chain (C18) polyunsaturated fatty acids (PUFA), decreased in conce...
3 CitationsSource
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