Development of Amphioplus abditus (Verrill) (Echinodermata: Ophiuroidea): I. Larval biology
Hendler, G. (1977). Development of Amphioplus abditus (Verrill) (Echinodermata: Ophiuroidea): I. Larval biology. Biol. Bull. 152(1): 51-63. https://dx.doi.org/10.2307/1540726
In: The Biological Bulletin. Marine Biological Laboratory: Lancaster. ISSN 0006-3185; e-ISSN 1939-8697, more
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| Keywords |
Amphioplus (Amphioplus) abditus (Verrill, 1871) [WoRMS]
Marine/Coastal |
| Abstract |
A fraction rich in secretory granules was prepared from the pyloric caeca of Asterias amurensis by sucrose density gradient centrifugation. The freshly prepared fraction exhibited no casein-hydrolyzing activity- but showed nine times as much specific activity as that of tissue homogenates after incubation at 37 degrees C for thirty minutes. Electron microscopy showed that the secretory granules were membrane-bound granules measuring 0.5-290 mu in diameter and contained dense and/or light amorphous substances. |
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