Evaluation of stomach tubes and gastric lavage for sampling diets from blue catfish and flathead catfish
North American Journal of Fisheries Management
By: D.S. Waters, T.J. Kwak, J.B. Arnott, and William E. Pine III
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Abstract
We compared the ability to extract all stomach contents by using stomach tubes or gastric lavage to sample diets from blue catfish Ictalurus furcatus and flathead catfish Pylodictus olivarus. Pulsed gastric lavage (PGL) removed a significantly greater proportion of stomach content mass (95.6%) from blue catfish than did stomach tubes (14.6%). Percent mass of flathead catfish contents removed with PGL (96.0%) was not significantly different from that removed with stomach tubes (86.9%). Based on the greater effectiveness of PGL for blue catfish, combined with a shorter mean time required per sample (69 versus 118 s) and the better preservation of extracted diet material, we recommend using PGL as a nonlethal technique to collect diet samples from large catfishes.
Suggested Citation
Waters, D., Kwak, T., Arnott, J., and Pine, W., 2004, Evaluation of stomach tubes and gastric lavage for sampling diets from blue catfish and flathead catfish: North American Journal of Fisheries Management, v. 24, no. 1, p. 258-261, https://doi.org/10.1577/M02-156.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Evaluation of stomach tubes and gastric lavage for sampling diets from blue catfish and flathead catfish |
| Series title | North American Journal of Fisheries Management |
| DOI | 10.1577/M02-156 |
| Volume | 24 |
| Issue | 1 |
| Publication Date | February 01, 2004 |
| Year Published | 2004 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | North American Journal of Fisheries Management |
| First page | 258 |
| Last page | 261 |