Table 6.
Timing and order of canal segment enclosure (Stage III) and ossification (Stage IV)
| |
|
Enclosure (Stage III) |
Ossification (Stage IV) |
||
|---|---|---|---|---|---|
| Species | Canal neuromast | Mean fish size | Min. canal diameter | Mean fish size | Min. canal diameter |
|
Tramitichromis |
SO1 |
13.2 |
83.8 |
17.0 |
137.2 |
| sp. |
SO2 |
9.8 |
86.7 |
14.0 |
105.8 |
| |
SO3 |
9.2 |
83.7 |
13.3 |
91.0 |
| |
SO4 |
8.3 |
100.4 |
12.0 |
95.9 |
| |
SO5 |
8.4 |
98.0 |
12.1 |
77.9 |
| |
MD1 |
--* |
N/A |
--** |
--- |
| |
MD2 |
13.7 |
102.1 |
17.0 |
116.9 |
| |
MD3 |
11.8 |
101.5 |
13.4 |
89.7 |
| |
MD4 |
12.4 |
116.2 |
14.3 |
101.4 |
| |
MD5 |
14.5 |
130.0 |
15.0 |
149.7 |
|
Aulonocara |
SO1 |
17.3 |
186.6 |
18 |
231.4 |
|
stuartgranti |
SO2 |
15.8 |
143.0 |
18.7 |
225.7 |
| |
SO3 |
14.9 |
176.8 |
18.7 |
227.6 |
| |
SO4 |
11.3 |
100.4 |
15.1 |
120 |
| |
SO5 |
11.1 |
115.7 |
15.5 |
147.2 |
| |
MD1 |
17.3 |
217.8 |
--** |
--- |
| |
MD2 |
15.0 |
113.9 |
19 |
212.8 |
| |
MD3 |
16.0 |
112.5 |
17.2 |
206.9 |
| |
MD4 |
16.5 |
166.6 |
18.5 |
203.6 |
| MD5 | 14.4 | 167.2 | 17.7 | 208.2 | |
Mean fish size and minimum canal diameter at which individual canal segments in the supraorbital (SO) and mandibular (MD) canals in Tramitichromis and Aulonocara were enclosed (Stage III) and ossified (Stage IV), as derived from histological material. See Figure 2 for definition of stages. Ascending values of mean fish size at enclosure and ossification among segments within a canal were used to infer the order of canal enclosure and ossification within that canal (see text for additional details). *Not enclosed; **Not ossified.