|
Schedule of development of brain tracts and commissures in different anurans1 . (Fig. 1: pink triangles) |
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| E. coqui |
D. pictus |
P. pustulosus2 |
X. laevis3 |
|
|
|
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| Neural tube closure |
TS 3 |
GH 16–17 |
≤GH 20 |
NF 204 |
| Rhombomeres |
TS 3+ |
GH 18 |
? |
? |
| Tract of postoptic commissure (TPOC) |
TS 4 |
GH 18 |
≤GH 20 |
NF 245,6 |
| Postoptic commissure (POC) |
TS 5 |
GH 20 |
≤GH 20 |
NF 285 |
| Ventral longitudinal tract (VLT) |
TS 5 |
GH 18 |
≤GH 20 |
NF 266 |
| Descending tract of V (TV) |
TS 5 |
GH 18 |
≤GH 20 |
NF 266 |
| Descending tract of VIII (TVIII) |
TS 5 |
GH 20 |
≤GH 20 |
? |
| Tract of anterior commissure (TAC) |
TS 6 |
GH 20 |
GH 22 |
NF 306 |
| Anterior commissure (AC) |
TS 7 |
GH 20 |
GH 22 |
NF 326,7 |
| Supraoptic tract (SOT) |
TS 6 |
GH 20 |
GH 20 |
NF 326,7 |
| Tract of posterior commissure (TPC) |
TS 6 |
GH 22 |
GH 22 |
NF 326,7 |
| Posterior commissure (PC) |
TS 6 |
GH 22 |
GH 24 |
NF 326,7 |
| Tract of commissure of posterior tuberculum (TCPT) |
TS 6 |
GH 22 |
GH 22 |
? |
| Commissure of posterior tuberculum (TCPT) |
TS 6 |
GH 22 |
GH 22 |
? |
| Tract of ventral tegmental commissure (TVTC) |
TS 6 |
GH 22 |
GH 22 |
NF 327 |
| Ventral tegmental commissure (VTC) |
TS 6 |
GH 22 |
GH 22 |
NF 327 |
| Tract of cerebellar commissure (TCC) |
TS 6 |
GH 20 |
GH 22 |
? |
| Cerebellar commissure (CC) |
TS 7 |
GH 23 |
GH 24 |
? |
| Dorsoventral diencephalic tract (DVDT) |
TS 6 |
GH 20 |
GH 22 |
NF 285,6 |
| Tract of habenular commissure (THC) |
TS 8 |
GH 23 |
GH 24 |
NF 33/346 |
| Habenular commissure (HC) |
TS 8 |
GH 23 |
GH 24 |
? |
| Intertectal commissure (ITC) |
TS 98 |
GH228 |
GH 27–29 |
? |
|
1 Terminology for embryonic fiber tracts based on [38,39] 2 First stage analyzed: GH 20 3 Data taken from literature 4 [88] 5 [40] 6 [42] 7 [41] 8 Only single fibers crossing midline at these stages; not included in Figure 1. | ||||
Schlosser Frontiers in Zoology 2008 5:9 doi:10.1186/1742-9994-5-9 |
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