Seasonal growth of free-ranging Gila Monsters (Heloderma suspectum) in a Southern Arizona population

Jeffrey J. Smith, Melissa Amarello, Matt Goode

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

We fit asymptotic models to growth data of free-ranging Gila Monsters studied near Tucson, Arizona. We used a mixed-effects modeling procedure that allows for unequal numbers of recaptures by accounting for within-individual covariance and models between-individual variation in growth parameters as random effects. A model selection procedure and diagnostic tests indicated that a von Bertalanffy curve with seasonal cessation of growth and a random effect for asymptotic size fit the data best. Young Gila Monsters in our study grew faster than previously reported growth rates from both field and captive animals, and we discuss potential reasons for this discrepancy.

Original languageEnglish (US)
Pages (from-to)484-488
Number of pages5
JournalJournal of Herpetology
Volume44
Issue number3
DOIs
StatePublished - Sep 1 2010

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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