Evaluation of Stomach Tubes and Gastric Lavage for Sampling Diets from Blue Catfish and Flathead Catfish
| Autor: | William E. Pine, Joshua B. Arnott, Thomas J. Kwak, D. Scott Waters |
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| Rok vydání: | 2004 |
| Předmět: |
animal structures
Ecology biology Stomach medicine.medical_treatment digestive oral and skin physiology fungi Anatomy Management Monitoring Policy and Law Aquatic Science biology.organism_classification Gastric lavage medicine.anatomical_structure Animal science Ictalurus medicine Stomach tube Flathead Pylodictis olivaris Ecology Evolution Behavior and Systematics Blue catfish Catfish |
| Zdroj: | North American Journal of Fisheries Management. 24:258-261 |
| ISSN: | 1548-8675 0275-5947 |
| DOI: | 10.1577/m02-156 |
| Popis: | 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 Pylodictis olivaris. 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. |
| Databáze: | OpenAIRE |
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