Patterns of Nesting Migrations in the Tuatara (Sphenodon punctatus), A Colonially Nesting Island Reptile

Jeanine Refsnider, Charles Daugherty, Stephanie Godfrey, Susan Keall, Jennifer Moore, Nicola Nelson

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    The costs of nesting to female animals can be substantial, and may dictate patterns of nest-site choice. In particular, females that travel longer distances to nest likely incur greater energetic costs and may be at greater risk of losing territories to conspecific competitors. We examined patterns of nesting migrations for a population of Tuatara on Stephens Island, New Zealand, over 5 yr. We found that only about 7% of female Tuatara observed nesting in a rookery also lived in that rookery. Of 140 females for which we had both residence and nesting locations, 42% traveled to a nesting rookery from their residential area. The average distance traveled by these females was 84 m, and travel was directed toward the rookery closest to a female's residence area. Our results demonstrate that female Tuatara on Stephens Island minimize the distance traveled on nesting migrations. We suggest that the patterns in nesting travel we observed in this population may be due to natal philopatry of nesting females, or to females minimizing the costs of nesting-related travel.

    Original languageEnglish
    Pages (from-to)282-290
    Number of pages9
    JournalHerpetologica
    Volume69
    Issue number3
    DOIs
    Publication statusPublished - 2013

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