Part II. Lipid Classes and Fatty Acids in Pandalus Shrimp Larvae: Implications for Survival Expectations and Trophic Relationships

• Main Authors: S. A. Pedersen, L. Storm
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2000
• Subjects: Greenland; Pandalus borealis
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.606.993; http://journal.nafo.int/J30/pedersen2.pdf

Lipid class and fatty acid compositions were determined in shrimp larvae (Pandalus borealis and P. montagui) collected along transects across banks on the West Greenland shelf in June 1999, May and July 2000. The lipid class contents were investigated as indices of larval shrimp lipid condition and food type. Fatty acid compositions were investigated for lipid biomarkers to establish trophic relationships between larval shrimp and potential prey. Phospholipids were the dominant lipid class in all six pelagic development stages of larval P. borealis and P. montagui, accounting for 80 to 92 % of the total lipid. In all six stages the contents of free fatty acids were more abundant than triacylglycerol. With increasing larval size from hatching to a carapace length of ~2.3 mm, there was a decreasing trend in the contents of hydrocarbons attributed to reduced amount of phytoplankton in the diet. Triacylglycerol (TG) content to wet weight ratio was investigated as index of nutritional larval condition and survival potential. Proportions of larvae with TG indices>0.2 were relatively high in