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Gonostomum affine (Stein, 1859) Sterki, 1878. Dorsal kineties (green arrowheads) and caudal cirri (black arrowhead). Non-flooded Petri dish soil sample collected from flood-irrigated lawn in Boise, Idaho, June 2008. Protargol (Wilbert modification). Brightfield.
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Gonostomum affine (Stein, 1859) Sterki, 1878. Ventral infraciliature. Green arrowhead marks posterior-most ""postoral"" cirrus. Non-flooded Petri dish soil sample collected from flood-irrigated lawn in Boise, Idaho, June 2008. Protargol (Wilbert modification). Brightfield.
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Gonostomum affine (Stein, 1859) Sterki, 1878. Non-flooded Petri dish soil sample collected from flood-irrigated lawn in Boise, Idaho, June 2008. Protargol (Wilbert modification). Brightfield.
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Ventral infraciliature of the oxytrichid,Gonostomum strenuum (ENGELMANN, 1862) STERKI, 1878. G. strenuum differs from G. affine by the greater number of frontoterminal (4-6 vs 2) and frontoventral cirri. In G. strenuum the last frontoventral cirrus is just posterior to the peristome (yellow arrowhead).Collected from a non-flooded Petri dish culture of soil from a park lawn in Boise, Idaho. January 2007.Stained by the protargol technique [Wilbert modification] (see Foissner, W. Europ. J. Protistol., 27:313-330;1991).Brightfield.
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Ventral infraciliature of the oxytrichid,Gonostomum strenuum (ENGELMANN, 1862) STERKI, 1878. G. strenuum differs from G. affine by the greater number of frontoterminal and frontoventral cirri. In G. strenuum the last frontoventral cirrus is just posterior to the peristome (yellow arrowhead).Collected from a non-flooded Petri dish culture of soil from a park lawn in Boise, Idaho. January 2007.DIC.
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Ventral view of the oxytrichid,Gonostomum strenuum (ENGELMANN, 1862) STERKI, 1878. G. strenuum differs from G. affine by the greater number of frontoterminal and frontoventral cirri. In G. strenuum the last frontoventral cirrus is just posterior to the peristome .Collected from a non-flooded Petri dish culture of soil from a park lawn in Boise, Idaho. January 2007.DIC.
