Worm Breeder's Gazette 10(3): 120
These abstracts should not be cited in bibliographies. Material contained herein should be treated as personal communication and should be cited as such only with the consent of the author.
In examining embryonic lineages that give rise to the dorsal and lateral hypodermis, we have found a clerical error in the embryonic cell lineage paper (Sulston et al. (1983), Dev. Biol. 100, 64-119). We have used the lineages of Caa and Cpa as positional markers in following the ABarpp lineage (which gives rise to, among others, V1, V2, V4 and V6 right and left) from 100 min to 260 min and have found that the positions of the descendants of Caaa and Cpaa are reversed in Figures 7a (260 min), 10 (290 min), 13 (L1) and 14 (L1). At 260 min, the four nuclei descended from Caaa are to be found on the left of the dorsal midline and those from Cpaa on the right. At about 310 min of embryogenesis, most of the dorsal hypodermal nuclei migrate across the midline to reside on the side opposite to that of their origin (Fig. 10). Thus, after this stage, the four descendants of Cpaa reside on the left side and Caaa on the right side (Figs. 13 and 14a). Note that Fig. 5 is correct with Caa to the left (and anterior) of Cpa. [See Figures 1 & 2]