Skip to main content
Figure 5 | BMC Biology

Figure 5

From: Hox genes pattern the anterior-posterior axis of the juvenile but not the larva in a maximally indirect developing invertebrate, Micrura alaskensis (Nemertea)

Figure 5

Expression of MaAntp, MaLox4, and MaPost2 in M. alaskensis larval development. All images and diagrams show lateral views with larval anterior up and future juvenile anterior to the left. Asterisk marks apical organ. (A) MaAntp expression is not evident during the cerebral-organ-discs stage anywhere in the larval or juvenile body, including the trunk discs (td), the cephalic disc (cd), cerebral organ discs (cod), or stomach (st). (B) Initial MaAntp expression occurs during the head-and-trunk stage in domains of each trunk rudiment (tr) and in a portion of the dorsal disc (dd). The head rudiment (hr) is indicated for reference. (C) MaAntp is expressed in a patch near the posterior end of the juvenile in complete-proboscis-stage larvae. Proboscis rudiment (pb) marked for reference. (D) MaLox4 is not expressed in trunk-discs-stage larvae. (E) MaLox4 expression first occurs during the head-and-trunk stage in domains of each trunk rudiment (tr), with no evident expression in the dorsal disc (dd). (F) MaLox4 is expressed in a small spot near the posterior end of the juvenile in extended-proboscis-stage larvae. (G) MaPost2 is not expressed in trunk-discs-stage larvae. (H) MaPost2 expression first occurs during the head-and-trunk stage in posterior domains of each trunk rudiment (tr), with no evident expression in the dorsal disc (dd). (I) MaPost2 is expressed in the juvenile caudal cirrus in hood-stage larvae. (A’-I’) diagrammatically illustrate expression patterns in the three respective developmental stages.

Back to article page
\