Pinnularia graciloides var. latecapitata Metzeltin & Krammer (1998: 176)

Amaral, Mailor Wellinton Wedig, Medeiros, Gabriela, Daufenbach, Vanessa, Sampaio, Silvio Cesar, Reis, Ralpho Rinaldo Dos, Ludwig, Thelma Alvim Veiga & Bueno, Norma Catarina, 2024, Taxonomy of epilithic diatoms and teratological forms under the presence of metals in surface sediment, Phytotaxa 647 (3), pp. 237-273 : 253

Pinnularia graciloides var. latecapitata Metzeltin & Krammer (1998: 176)

Fig. 9 : B

Length: 38.2–50.8 μm; width: 7.4–8.9 µm; striae: 12–13 in 10 µm (n = 3)

Teratological form: deformed valve outline, with sigmoid shape.

Occurrence: S2, S4, S7.

Ecological characteristics: Cond.: 65.00 µS cm –1; BOD: 1.00 mg L− 1; COD: 2.55 mg L− 1; N-NH: 200 µg L− 1; NO: 2.90 mg L− 1; DO: 3 3 − 1 − − 1 − 1 − 1 3 12.12 mg L; pH: 6.40; PO: 0.05 mg L; TP: 0.02 mg L; TS: 95.00 mg L; Temp.: 17.93 °C; Turb.: 3.78; Flow: 0.94 m s; 4 Average depth: 0.24 m; Prec.: 2.37–4.96 mm.

Metal concentrations: Co: 17.50–57.56 mg L –1; Cr: 24.23–83.01 mg L –1; Cu: 195.31–273.01 mg L- 1; Mn: 370.99–745.82 mg L –1; Ni: 33.62–85.63 mg L –1; Pb: 33.49–54.83 mg L –1; Zn: 78.88–258.21 mg L –1.

Figures

FIGURE 9. Epilithic diatoms from Cascavel River micro-watershed in LM. A–B. Pinnularia graciloides var. latecapitata. B. Teratological valve. C. P. graciloides var. triundulata. D. P. viridiformis. E. P. tabellaria. F–G. P. subgibba var. undulata. H. P. subgibba. I. P. stidolphii. J–K. P. laucensis. L–M. P. certa. N. P. microstauron var. rostrata. O. P. subcapitata. P. P. subanglica. Q. P. meridiana. R. P. rumrichae. S–T. P. obscura. U. P. schoenfelderi. V. P. joculata. W. Fallacia insociabilis. X–Y. Sellaphora nigri. Z. S. laevissima. AA. S. rhombicarea. AB. S. pupula. AC–AF. S. saugerresii. AD–AF. Teratological valves. AG. S. sassiana. AH. S. tridentula. AI. Diploneis subovalis. AJ. Caloneis hyalina. AK. C. westii. AL–AM. C. bacillum. AM. Teratological valve. Scale bars: 10 µm.