Apr22_Morphometrics - Lindberg - 46 3A 3B 3C 3D 3a 3b 3c 3d...

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Unformatted text preview: Lindberg - 46 3A 3B 3C 3D 3a 3b 3c 3d 2a 2c 1 c 1 d 1c22 1b 1a 1b 1c 1d ME2 4D ME1 3 c 3 d Vetigastropoda Neritopsina Sorbeoconcha Heterobranchia 1a 1b 1c 1d 1a 1b 1c 1d Valvata piscinalis Crepidula fornicata Theodoxus fluviatilis Haliotis tuberculata 1q cell lineage 4q cell lineage 3q cell lineage 2q cell lineage Macromeres 11 11 11 11 12 1c 12 1a 12 1d 12 1d 22 1c 22 1b 22 1a 22 1 a 2 1 2 1 2 1 1 b 2 1 1 1 2 d 2 2 2 c 2 2 2 b 2 2 2 a 2 2 2 c 21 2 d 2 1 2 b 2 1 2 a 21 1d 2 1c 2 1b 2 1a 2 2c 2a 12 12 2 a 1 1 2 d 1 1 2 c 1 1 2 b 1 1 2b 2a 12 2c 12 2d 12 2 a 1 1 2 d 1 1 2 c 1 1 2 b 1 1 1d 2 1c 2 1b 2 1a 2 12 1 2 1 1 1 2 2 2 2 a 1 2 d 1 2 c 1 2 b 1 2c 2 2a 2 3 a 1 3 b 1 3 c 1 3 d 1 2 2 3 a 2 3 b 2 F IGURE 8. Stylized embryo composition at the 32-36 cell stage in four gastropod subclades Vetigastropoda (36 cells), Neritospina (36 cells), Heterobranchia (32 cells), and the Sorbeoconcha (34 cells). All cells are labeled in the Vetigastropoda; in subsequent diagrams only cells whose identity has changed relative to the vetigastropod condition are labeled. Cells are shaded to show affinities as cell lineage descendents, and pie charts summarize overall embryo composition for each taxon. Cell lineage data from van den Biggelaar and Haszprunar (1996). Lindberg - 39 20 40 60 80 100 120 140 160 180 1q 4d 2q 3q 1Q 2Q 3Q 4Q A-D 4q 1q 4d 1q 1 1q 11 2q 2q 11 2q 1 3q 3q 1 1Q 2Q 3Q 4Q A-D 4q 1q 4d 1q 1 1q 11 2q 2q 11 2q 1 3q 3q 1 1Q 2Q 3Q 4Q A-D 4q...
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Apr22_Morphometrics - Lindberg - 46 3A 3B 3C 3D 3a 3b 3c 3d...

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