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image of Journal of Crustacean Biology

ABSTRACT Protein, lipid, and carbohydrate content were determined for hemolymph, ovary, and hepatopancreas of the brown shrimp Crangon crangon (Linnaeus) relative to ovarian development. Total organic content (pooled proteins, lipids, and carbohydrates in all three tissues) increases from oogenesis through vitellogenesis. The protein component accounts for the greatest increase, followed by lipid and carbohydrate. All measured chemical species in the depleted ovary (following oviposition) decrease to the values observed in oogenic ovaries. Increase in total protein content is associated with the increase in ovarian protein content; hemolymph and hepatopancreatic protein increase only slightly prior to previtellogenesis, and decrease during vitellogenesis. Total lipid increase is traceable to hepatopancreatic accumulation prior to vitellogenesis; subsequent decrease during vitellogenesis is associated with increases in hemolymph and ovarian lipid contents. Changes in total carbohydrate content are also due to hepatopancreatic accumulation during previtellogenesis, and subsequent decrease during vitellogenesis. Hemolymph carbohydrate content increases when hepatopancreatic content decreases. The ovary never accumulates large quantities of carbohydrates. Although the concentrations of proteins, lipids, and carbohydrates vary considerably, certain patterns related to ovarian development and maturation are evident. These trends, and shifts in chemical content associated with changes in the size (volume) of the tissues and organs (hemolymph, ovary, hepatopancreas), are discussed in terms of biochemical conversion and transport of the compounds between organs during the reproductive cycle.


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