Atlantic salmon (Salmo salar) liver transcriptome response to diets containing Camelina sativa products

Xue, Xi; Hixson, Stefanie M.; Hori, Tiago S.; Booman, Marije; Parrish, Christopher C.; Anderson, D. M.; Rise, Matthew L.

doi:10.1016/j.cbd.2015.01.005

Cited by 52 publications

(72 citation statements)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarity in percentage (SIMPER) analysis was used to differentiate phytoplankton FA profiles based on temperature as a categorical variable (as in Xue et al ., , ). Temperature data associated with each FA profile was divided into four quartiles (low, medium–low, medium–high, and high) that were statistically defined in Minitab (Minitab 16 Statistical Software).…”

Section: Methodsmentioning

confidence: 99%

Climate warming is predicted to reduce omega‐3, long‐chain, polyunsaturated fatty acid production in phytoplankton

Hixson

Arts

2016

Global Change Biology

Self Cite

219

197

View full text Add to dashboard Cite

Phytoplankton are the main source of energy and omega-3 (n-3) long-chain essential fatty acids (EFA) in aquatic ecosystems. Their growth and biochemical composition are affected by surrounding environmental conditions, including temperature, which continues to increase as a result of climate warming. Increasing water temperatures may negatively impact the production of EFA by phytoplankton through the process of homeoviscous adaptation. To investigate this, we conducted an exploratory data synthesis with 952 fatty acid (FA) profiles from six major groups of marine and freshwater phytoplankton. Temperature was strongly correlated with a decrease in the proportion of n-3 long-chain polyunsaturated FA (LC-PUFA) and an increase in omega-6 FA and saturated FA. Based on linear regression models, we predict that global n-3 LC-PUFA production will be reduced by 8.2% for eicosapentaenoic acid (EPA) and 27.8% for docosahexaenoic acid (DHA) with an increase in water temperature of 2.5 °C. Using a previously published estimate of the global production of EPA by diatoms, which contribute to most of the world's supply of EPA, we predict a loss of 14.2 Mt of EPA annually as a result of ocean warming. The n-3 LC-PUFA are vitally important for an array of key physiological functions in aquatic and terrestrial organisms, and these FA are mainly produced by phytoplankton. Therefore, reduced production of these EFA, as a consequence of climate warming, is predicted to negatively affect species that depend on these compounds for optimum physiological function. Such profound changes in the biochemical composition of phytoplankton cell membranes can lead to cascading effects throughout the world's ecosystems.

show abstract

Section: Methodsmentioning

confidence: 99%

Climate warming is predicted to reduce omega‐3, long‐chain, polyunsaturated fatty acid production in phytoplankton

Hixson

Arts

2016

Global Change Biology

Self Cite

219

197

View full text Add to dashboard Cite

show abstract

“…This is the basis of the shore-based hypothesis of human brain evolution, which proposes that sustained access by certain groups of early Homo to aquatic food sources were key to human brain development (Cunnane and Crawford, 2014). In the absence of dietary EPA and DHA, controlled feeding studies have shown that carnivorous marine fish fed a formulated diet without EPA and DHA show up-regulation of the genes responsible for EPA and DHA synthesis; while those fish fed a diet containing sufficient content of EPA and DHA do not upregulate these genes (Xue et al 2014;Xue et al 2015). Similarly, results from feeding trials of freshwater fish showed that Arctic charr (Salvelinus alpinus) and…”

Section: Epa and Dha Requirements And Synthesismentioning

confidence: 99%

Production, distribution, and abundance of long-chain omega-3 polyunsaturated fatty acids: a fundamental dichotomy between freshwater and terrestrial ecosystems

et al. 2015

Self Cite

View full text Add to dashboard Cite

Long-chain polyunsaturated fatty acids (LC-PUFA) are critical for the health of aquatic and terrestrial organisms; therefore, understanding the production, distribution, and abundance of these compounds is very important. Although the dynamics of LC-PUFA production and distribution in aquatic environments has been well documented, a systematic and comprehensive comparison to LC-PUFA in terrestrial environments has not been rigorously investigated. Here we use a data synthesis approach to compare and contrast fatty acid profiles of 369 aquatic and terrestrial organisms. Habitat and trophic level were interacting factors that determined the proportion of individual omega-3 (n-3) or omega-6 (n-6) PUFA in aquatic and terrestrial organisms. Higher total n-3 content compared with n-6 PUFA and a strong prevalence of the n-3 PUFA eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) characterized aquatic versus terrestrial organisms. Conversely, terrestrial organisms had higher linoleic acid (LNA) and alpha-linolenic acid (ALA) contents than aquatic organisms; however, the ratio of ALA:LNA was higher in aquatic organisms. The EPA + DHA content was higher in aquatic animals than terrestrial organisms, and increased from algae to invertebrates to vertebrates in the aquatic environment. An analysis of covariance revealed that fatty acid composition was highly dependent on the interaction between habitat and trophic level. We conclude that freshwater ecosystems provide an essential service through the production of n-3 LC-PUFA that are required to maintain the health of terrestrial organisms including humans.

show abstract

“…The n‐3 fatty acid, ALA, is different from those that are uniquely present in FO, but it is the precursor to eicosapentaenoic acid (EPA, 20:5n‐3) and docosahexaenoic acid (DHA, 22:6n‐3; Wang et al, ) which are prevalent fatty acids in FO. The use of camelina oil in aquafeeds has been studied extensively (e.g., Bell et al ; Hixson et al, ; Hixson et al ; Xue et al, ) and was recently approved for use in diets for Atlantic salmon and rainbow trout (in up to 140 g/kg) by the Canadian Food Inspection Agency (Canadian Food Inspection Agency, ; Genome Atlantic, ). The large amount of remaining meal by‐product after the oil extraction, or high‐oil residue meal (HORM), can also be used in animal feed (Waraich et al, ) and is currently approved in broiler chicken (120 g/kg) and laying hens (100 g/kg) in Canada, and in cattle feed in the United States (Canadian Food Inspection Agency, ).…”

Section: Introductionmentioning

confidence: 99%

High‐oil residue camelina meal, a viable source of protein at low levels in diets for juvenile salmonids

et al. 2019

Self Cite

View full text Add to dashboard Cite

The oilseed Camelina sativa has been studied as a lipid source for farmed salmonids, but recommended inclusion as a protein source has not been determined. This study evaluated low inclusion of camelina high‐oil residue meal (HORM) at 20, 40 and 60 g/kg of the diet, to determine an adequate level for Atlantic salmon parr (Salmo salar) and rainbow trout (Oncorhynchus mykiss). Salmon and trout were fed experimental diets containing up to 60 g/kg HORM for 16 weeks. At 40 g/kg HORM, trout and salmon growth performance were similar to those fed a control diet. However, at 60 g/kg HORM, trout showed lower final weight, weight gain and feed intake than those fed the control diet. Rainbow trout fed 40 and 60 g/kg HORM showed significantly lower whole body ash (p = .005), slightly lower whole body protein levels and higher fat than the control. In salmon fed 60 g/kg HORM diets, whole body ash (p = .024), and the submucosal layer of the intestine was thicker than the control (p = .007). Current results indicate that up to 40 g/kg HORM can be included in diets for rainbow trout and salmon juveniles.

show abstract

Atlantic salmon (Salmo salar) liver transcriptome response to diets containing Camelina sativa products

Cited by 52 publications

References 81 publications

Climate warming is predicted to reduce omega‐3, long‐chain, polyunsaturated fatty acid production in phytoplankton

Climate warming is predicted to reduce omega‐3, long‐chain, polyunsaturated fatty acid production in phytoplankton

Production, distribution, and abundance of long-chain omega-3 polyunsaturated fatty acids: a fundamental dichotomy between freshwater and terrestrial ecosystems

High‐oil residue camelina meal, a viable source of protein at low levels in diets for juvenile salmonids

Contact Info

Product

Resources

About