Table 1 Comparison of morphological characters among Paulinella species.
From: A single origin of the photosynthetic organelle in different Paulinellalineages
| Â | This study | P. chromatophora | P. ovalis | P. intermedia | P. indentata | |
|---|---|---|---|---|---|---|
|  | FK01 (n = 17) | M0880/a (n = 13) | Lauterborn 1895, Kies 1974 | Johnson et al 1988 | Vørs 1993 | Hannah et al 1996 |
Plastid | + | + | + | - | - | - |
Length (μm) | 15 – 17 | 23 – 27 | 20 – 30 | 4.5 | 6.6 | 11 – 17 |
Width (μm) | 10 – 11 | 16 – 20 | 15 – 20 | 3 | 2.9 | 8 – 10 |
No. of scales/column | 10 – 11 | 12 – 14 | 11 – 12 | 5 – 6 | 6 – 7 | 6 – 7 |
No. of columns | 5 | 5 | 5 | 5 | NA | Staggered rows |
Oral scales | 5 | 3 | 3 | 3 | 3 | 2 – 4 |
Fine-pored external scales | + (distinct) | + (not distinct) | NA | + | - | + (3 – 4 rows of pores at the end of scales) |
Scale feature | "Sieve-plate" on the internal surface | "Sieve-plate" on the internal surface | "Sieve-plate" on the internal surface | One-ridges and hollow scales | Smooth scales | Two-ridges and hollow scales |