✦ LIBER ✦

In situ clearance rates of planktonic rotifers

✍ Scribed by Kenneth G. Bogdan; John J. Gilbert; Peter L. Starkweather

Publisher: Springer
Year: 1980
Tongue: English
Weight: 402 KB
Volume: 73
Category: Article
ISSN: 1573-5141
DOI: 10.1007/bf00019428

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✦ Synopsis

The in siru clearance rates of several rotifer species from a small, temperate eutrophic lake were measured using three radioactive tracer cell-types, a bacterium (Aerobacter), a yeast (Rhodotorula), and alga (Chlamydomonas). Rates were below IO ~11 anim/h but varied significantly among species. Keratella cochlearis, Kellicottia bostoniensis, and Conochilus dossuarius ingested all three tracer cells but rates varied substantially with tracer cell-type. Polyarthru dolichoprera and P. eurypteru ingested only the algal cells. Co-occurring forms of K. cochlearis and species of Polyarthra differed markedly in size and in tracer cell utilization, indicating niche diversification in food resources.

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