Changes in the biochemical composition of the pyloric caeca of female seastars,Asterias rubens, during their annual reproductive cycle
M, R.C.H.. Oudejans; Sluis, I.; Plas, A.J.
Marine Biology 53(3): 231-238
ISSN/ISBN: 0025-3162 DOI: 10.1007/bf00952431
The biochemical composition of the pyloric ceca of female seastars (A. rubens) was studied throughout the annual reproductive cycle. The pyloric ceca index is high during the pseudo-rest stage of the ovaries and decreases gradually during ovarian growth. The pyloric ceca dry weight varies 20-38% of the fresh weight. Lipids and less prominently carbohydrates (both glycogen and other reducing sugars) seem to constitute the primary nutrient reserves for gonad growth. Proteins are also available to meet ovarian requirements during vitellogenesis.