Ancestral and derived attributes of the dlx gene repertoire, cluster structure and expression patterns in an African cichlid fish

Table 1 Embryonic expression domains of A. burtoni dlx genes.

Gene	Brain		Pharyngeal arches			Teeth		Fin fold^a	Other^a
	5 dpf	7, 8 and 10 dpf	5 dpf	7 dpf	10 dpf	Oral	Pharyngeal
dlx1a	++	++ (di)	++ (I and II) - (III and IV) + (V and VI)	++	++	-	- (7 dpf) - (10 dpf) - (13 dpf)	-
dlx2a	++	++ (di)	++ (I and II) + (III and IV) ++ (V and VI)	+	++	N.I.	+ (7 dpf) + (8 dpf) - (10 dpf)	-	+ (ov)
dlx4a	-	-	++ (I-VI)	++	++	+ (18 dpf)	++ (7 dpf) + (8 dpf) ++ (10 dpf) ++ (13 dpf)	-
dlx3b	-	++ (olf)	++ (I-VI)	++	++	+ (18 dpf)	++ (7 dpf) ++ (8 dpf) ++ (10 dpf) ++ (13 dpf)	+ (cf) + (df) + (af)	++ (csm) + (ov)
dlx4b	-	++ (olf)	+ (I-VI)	++	++	-	- (7 dpf) - (10 dpf) - (13 dpf)	+ (cf)	+ (csm)
dlx5a	++	++ (di)	++ (I-VI)	++	++	+ (18 dpf)	++ (7 dpf) ++ (8 dpf) ++ (10 dpf)	+ (cf) + (df) + (af) + (pf)	+ (ov)
dlx6a	+	++ (di)	+ (I-VI)	-	+	N.I.	- (7 dpf) - (10 dpf)	-

Expression domains with a high expression level were shown as '++', while '+' denotes a low expression signal. '-' indicates no expression signal detected and 'N.I.' indicates a case in which the expression pattern was not investigated. Additional spatial and temporal details of gene expression are shown in brackets. Abbreviations: di = diencephalon; cf = caudal fin; df = dorsal fin; af = anal fin; pf = pectoral fin; csm = circular smooth muscles of pharynx; olf = olfactory placode; ov = otic vesicle. ^aSome of these expression domains are shown in Additional file 5 and Additional file 6, respectively.

ISSN: 2041-9139