Estimating prey size and number in crayfish-eating snakes, genus Regina

Herpetologica
By: , and 

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Abstract

Snakes of the genus Regina feed almost exclusively on crayfish. The paired, symmetrical gastroliths of crayfish are not digested and are detectable from x-rays of the snake. Gastrolith length is directly proportional to carapace length and can be obtained from x-rays. Carapace length can be converted to kcal of ingested energy. Using these relationships and repeated captures of radio-telemetered Regina, estimates of food consumption and energy intake by freeliving snakes are feasible. New information on prey selectivity, feeding behavior, and predator-prey size relations in Regina grahami and R. septemvittata are presented and compared with similar data for other snakes.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Estimating prey size and number in crayfish-eating snakes, genus Regina
Series title Herpetologica
Volume 40
Issue 1
Year Published 1984
Language English
Contributing office(s) Patuxent Wildlife Research Center
Description 82-88
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Herpetologica
First page 82
Last page 88
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