The lipid composition of Patagonian toothfish from the Macquarie Island region : ecological and dietary implications within a regional food web ...

• Main Author: Wilson, Gareth Anthony
• Format: Thesis
• Language: unknown
• Published: University Of Tasmania 2023
• Subjects: Southern Ocean; Macquarie Island; Patagonian Toothfish
• Online Access: https://dx.doi.org/10.25959/23241191.v1; https://figshare.utas.edu.au/articles/thesis/The_lipid_composition_of_Patagonian_toothfish_from_the_Macquarie_Island_region_ecological_and_dietary_implications_within_a_regional_food_web/23241191/1

Recent commercial interest in the Patagonian toothfish (Dissostichus eleginoides) in the Macquarie Island region has heightened the need for a better understanding of the life history of this species. Of particular interest are dietary considerations. However, despite the importance of toothfish in the deep-sea food web of this and other Southern Ocean regions, relatively little is known of their diet. Current knowledge is based upon the examination of stomach contents, a technique that fails to identify with any certainty long-term dietary composition. The determination of lipid composition may provide a simple and effective means of determining the diet of toothfish, one that complements traditional techniques. Specifically, many higher order species are thought to deposit fatty acids derived from prey into storage with little or no modification. Constituent fatty acids of a predator may therefore represent a temporal integration of diet. The lipid composition of toothfish was investigated in relation to ...