A periodic pattern generator for dental diversity

Table 1 Size and spacing of tooth germs in three species of Malawi cichlids

(a)
Species	Diameter of first tooth	ZOI including first tooth	ZOI medial to first tooth	ZOI distal to first tooth	ZOI from First tooth to second OB	MD length of OB	Width of OB at level of first tooth	Area (μm²) of first tooth
CA	22.91 ± 0.839	51.80 ± 1.298	18.67 ± 0.344	17.99 ± 0.482	8.80 ± 0.56	110.72 ± 7.337	22.21 ± 1.135	528.08 ± 31.348
MZ	17.62 ± 0.149	44.05 ± 0.898	16.50 ± 0.213	12.87 ± 0.322	6.84 ± 0.084	116.62 ± 5.013	23.02 ± 0.382	384.06 ± 4.754
LF	14.87 ± 0.349	39.9 ± 1.697	11.95 ± 0.285	15.24 ± 0.392	7.28 ± 0.545	120.91 ± 3.834	19.41 ± 0.782	268.47 ± 8.084
(b)
Species	Diameter of first tooth	Inter-germ space between first and next medial tooth	Inter-germ space between first and next distal tooth	ZOI from First tooth to second OB	MD length of second row OB	Area (μm ² ) of first tooth
CA	25.68 ± 0.359	16.64 ± 0.128	14.02 ± 0.096	8.29 ± 0.266	140.02 ± 3.669	684.57 ± 19.248
MZ	18.19 ± 0.231	19.63 ± 0.222	11.96 ± 0.318	10.18 ± 0.434	138.47 ± 2.897	435.09 ± 19.98
LF	18.37 ± 0.437	13.06 ± 1.112	20.33 ± 1.065	8.02 ± 0.295	168.39 ± 5.432	404.15 ± 23.182

(a) We report mean values (three to five individuals) of measurements taken from the expression of shh at the first-tooth stage in the three cichlid species: CA, Cynotilapia afra; MZ, Metriaclima zebra; LF, Labeotropheus fuelleborni. MD, mesiodistal; OB, odontogenic band; ZOI, zone of inhibition. (b) Mean values (three to five individuals) from the 3–4-teeth stage. All values are in micrometres ± SE.

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