Why birds cannot be smaller than bees

Authors: Ahlborn, B.; Blake, R.W.

Source: Canadian Journal of Zoology, Volume 79, Number 9, September 2001 , pp. 1724-1726(3)

Publisher: NRC Research Press

Buy & download fulltext article:

OR

Price: $50.00 plus tax (Refund Policy)

Abstract:

Birds and mammals of body mass M that live in cold climates cannot have a body radius, Rmin, below about 2.5 cm. This criterion follows from the balance of metabolic heat production described by Kleiber's function, Γ = 3.6M0.73, and heat-conduction losses through the body insulation. Rmin differs from the critical radius calculated from a heat-flow balance at the outer edge of the organism that does not consider metabolic limitations.

Les oiseaux et les mammifères de masse corporelle M qui vivent en climat froid ne peuvent pas avoir un rayon plus petit que Rmin, environ 2,5 cm. Ce critère est basé sur l'équilibre entre la production métabolique de chaleur décrite par l'équation de Kleiber, Γ = 3.6M0,73, et les pertes de chaleur par conduction à travers la couche isolante du corps. Rmin diffère du rayon critique calculé pour un équilibre de flux de chaleur à la limite externe de l'organisme sans tenir compte des limites métaboliques.[Traduit par la Rédaction]

Document Type: Research Article

Publication date: September 1, 2001

More about this publication?
  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Terms & Conditions
  • Sample Issue
  • Reprints & Permissions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page