Agricultural research to improve water quality
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Abstract
ime courses for ingest~on, retention and release via feces of microbial food was investigated
using 2 b~valves w~th d~fferent feeding strategies, Potamocorbula amurensis and Macoma
balthica. The results showed 2 pathways for the uptake of food material in these clams. The first is
represented by an initlal label pulse in the feces. The second pathway operates over longer time
periods. Inert "Cr-labeled beads were used to determine time frames for these pathways. The first
pathway, involving extracellular digestion and intestinal uptake, is relatively inefficient In the
digestion of bacter~al cells by P amurensis but more efficient in M. balthica. The second pathway,
involving intracellular digestion withln the digestive gland of both clams, was highly efficient in
absorb~ng bacterial carbon, and was responsible for most chromium uptake. Differences in the overall
retention of microbial "Cr and I4C relate not to gut-passage times but to the processing and release
strategies of the food material by these 2 clams.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Agricultural research to improve water quality |
| Series title | Journal of Soil and Water Conservation |
| Volume | 46 |
| Issue | 3 |
| Year Published | 1991 |
| Language | English |
| Publisher | Soil and Water Conservation Society |
| Contributing office(s) | Toxic Substances Hydrology Program |
| Description | 5 p. |
| First page | 184 |
| Last page | 188 |
| Google Analytic Metrics | Metrics page |