Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Snout temperatures of reptiles, with special reference to the changes during feeding behaviour in Python molurus bivittatus (Serpentes, Boidae): a study using infrared radiation

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

Access this article

+ Tax (if applicable)
Add to Favorites
You must be logged in to use this functionality

image of Amphibia-Reptilia

The AGA Thermovision 750® infrared measuring system is used to measure temperatures and to present thermal images of reptiles. Because the system records only the infrared that emanates from the subject itself, the process may be carried out in complete darkness. Evaporation from the wet nasal mucosal surface and the velocity and amount of air over this tissue, results in the reptiles tested having a distinctly cooler snout as compared to the other parts of the head and body. Body temperature is found to be above ambient temperature. Constriction and swallowing changes the heat distribution in Python molurus bivittatus. There is a differential increase in temperature and the cooler snout disappears. Afterwards a differential cooling of the head and body occurs and a colder spot in the anterior temporal region is noted. These phenomena are discussed; the cooler spot is attributed to the action of the anterior temporal gland. No qualitative differences in behavioural elements in feeding behaviour in dark vs light are observed. In the general feeding pattern the action ofappression is interpreted as hearing, and snout pushing after swallowing, as a putting back in place ofjaw and skull elements. The hypothesis that temperature differences over the dead prey (mouse) are of importance in head searching is investigated. A clear heat gradient persisting long enough to be of use to heat-sensitive snakes is found.

Affiliations: 1: State University of Leiden, Zoological Laboratory, Department of Functional Morphology Kaiserstraat 63, 2318 GP Leiden, The Netherlands


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to ToC alert
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Amphibia-Reptilia — Recommend this title to your library
  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation