Table 1 |
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Size and spacing of tooth germs in three species of Malawi cichlids |
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(a) |
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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 |
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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 |
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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 |
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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 |
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(b) |
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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 (μm2) of first tooth |
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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 |
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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 |
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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 |
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(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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Fraser et al. BMC Biology 2008 6:32 doi:10.1186/1741-7007-6-32 |
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