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Fig. 2 | EvoDevo

Fig. 2

From: Oncopeltus-like gene expression patterns in Murgantia histrionica, a new hemipteran model system, suggest ancient regulatory network divergence

Fig. 2

Embryogenesis and engrailed expression of Murgantia histrionica. Photos of embryos representing the first 60 h of Murgantia embryogenesis at 25 °C are shown. Embryos are shown with the anterior to the left. a During the first 12 h nuclei divide to give rise to an early, likely syncytial blastoderm stage. This continues until invagination occurs at the posterior (indicated by arrow) and the germband begins to grow along the ventral side of the embryo. b Germband elongation continues for the next 24 h with segments added at the segment addition zone (SAZ). c During the next 12 h a fully elongated germband develops and appendages are visible. Asterisks indicate posterior end of germband. d Expression of engrailed in Murgantia. (i) Mh-en is expressed in six stripes in the late blastoderm. (ii) Mh-en is expressed in every mature segment during germband elongation. (iii) Expression of Engrailed was examined by immunohistochemistry using the monoclonal antibody 4D9 and a fully elongated germband. (Note that this antibody can detect both En and Invected but we have not as yet isolated Mh-invected and do not know if its expression overlaps with Mh-en.)

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