Using cone beam CT ‐scans to reveal headfirst ingestion and possible prey manipulation tactics in sawsharks

Patrick J. Burke*, Jane E. Williamson

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)
    3 Downloads (Pure)

    Abstract

    Prey manipulation through headfirst ingestion is a common foraging tactic in predatory taxa. Sawsharks possess a toothed rostrum that is thought to assist in prey capture, but the process from prey contact to ingestion is unknown. This study provides evidence of headfirst ingestion and possible prey orientation in situ through the use of cone beam CT scans in the common sawshark (Pristiophorus cirratus). CT scans provide an efficient method for assessing ingestion and proposing plausible behavioural tactics for food manipulation in a species difficult to observe in the wild or maintain in captivity.

    Original languageEnglish
    Pages (from-to)271-274
    Number of pages4
    JournalJournal of Fish Biology
    Volume99
    Issue number1
    Early online date3 Feb 2021
    DOIs
    Publication statusPublished - Jul 2021

    Keywords

    • Australia
    • headfirst ingestion
    • rostrum

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