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Histochemical observations on the pyloric caeca of Asterias rubens (Echinodermata, asteroidea) in relation to the reproductive cycle
Author(s) -
Van Der Plas A. J.,
Voogt P. A.
Publication year - 1983
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051780208
Subject(s) - asterias , biology , starfish , acid phosphatase , phosphatase , duct (anatomy) , sea urchin , alkaline phosphatase , anatomy , biochemistry , enzyme , zoology , microbiology and biotechnology , ecology
The pyloric caeca of the starfish Asterias rubens were investigated histochemically during the reproductive cycle. The median duct and the side lobes reacted differently. The median duct reacted positively for acid phosphatases and glucose‐6‐phosphate dehydrogenase, whereas the side lobes reacted positively for alkaline phosphatases, neutral lipids, and fatty acids. In the transition zone between the median duct and the side lobes, the reaction for alkaline phosphatases and neutral lipids increased toward the side lobes. The function of the enzymes and the histochemical results are discussed in relation to the function of the pyloric caeca and to the reproductive cycle.