EMBRYOLOGICAL DEVELOPMENT OF THE SYLLID, AUTOLYTUS FASCIATUS (BOSC) (CLASS POLYCHAETA)
Open Access
- 1 October 1964
- journal article
- research article
- Published by University of Chicago Press in The Biological Bulletin
- Vol. 127 (2) , 187-205
- https://doi.org/10.2307/1539219
Abstract
Developmental stages isolated from the brood pouches of the red-banded Autolytus collected in Puerto Rico waters are described and photographed. The diploid chromosome number is 12. Fertilization occurs at metaphase I. The cleavage pattern is spiral and involves polar lobe formation. Gastrulation is by epiboly. Characteristic differentiations of larvae at hatching are external ciliation, anterior and lateral tactile bristles, anterior and ventral mucus-secreting cells, and an anterior pair and two circles of pharyngeal teeth. Larvae are compared with other syllid larvae as regards ciliation, tactile bristles, and pharyngeal teeth.This publication has 1 reference indexed in Scilit:
- The early development of marine annelidsJournal of Morphology, 1897