thumbnail

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

Herpetologica

By:
, , and

Links

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
Number of Pages:
7