Analysis of chemicals from earthworms and fish that elicit prey attack by ingestively naive garter snakes (Thamnophis)

Analysis of chemicals from earthworms and fish that elicit prey attack by ingestively naive garter snakes (Thamnophis)

Materials previously shown to elicit increased tongue-flicking and prey attack in garter snakes (Thamnophis sirtalis) were isolated from both earthworms (Lumbricus terrestris) and fish (Pimephales promelas). Both high- and low-molecular-weight components from earthworms and fish stimulated attacks a...

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Bibliographic Details
Published in:Journal of chemical ecology Vol. 16; no. 1; pp. 67 - 77
Main Authors: SCHELL, F. M, BURGHARDT, G. M, JOHNSTON, A, COHOLICH, C
Format: Conference Proceeding Journal Article
Language:English
Published: New York, NY Springer 1990
Subjects:
Amphibia and reptilia
Animal ethology
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Lumbricus terrestris
Pimephales promelas
Psychology. Psychoanalysis. Psychiatry
Vertebrata
Predator prey relation
Thamnophis sirtalis
Vertebrata
Glycopeptide
Predatory behavior
Reptilia
Chemoreception
Stimulus discrimination
Odor
Chemical stimulus
Ophidia
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Summary:Materials previously shown to elicit increased tongue-flicking and prey attack in garter snakes (Thamnophis sirtalis) were isolated from both earthworms (Lumbricus terrestris) and fish (Pimephales promelas). Both high- and low-molecular-weight components from earthworms and fish stimulated attacks and increased tongue-flicking in previously unfed neonate garter snakes relative to distilled water controls. Earthworm collagen was also effective, but even concentrated fractions were less effective than raw extract. Conflicting reports on the effectiveness of collagen suggest that the salient chemical(s) is a smaller molecule tightly bound to collagen and resisting standard purification methods.
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ISSN:0098-0331
1573-1561
DOI:10.1007/BF01021268