作者: John M. Daly
DOI: 10.1017/S0025315400058732
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摘要: The ‘mucous’ tube of Platynereis dumerilii is made up successive layers fine threads held together by an adhesive secretion. Tube construction involves a regular sequence behaviour which can be modified if algae or other objects are available for incorporation into the wall. Anterior parapodia specialized and gland cells producing components occupy most coelom in these segments. Several types cell recognized histologically those form threadsdischarge complex spiral organ below cuticle.