Life History Constrains Biochemical Development In The Highly Specialized Odontocete Echolocation System

Main Category: Biology / Biochemistry
Also Included In: Veterinary
Article Date: 10 Jul 2008 - 1:00 PDT

email to a friend   printer friendly   view / write opinions   rate article

We describe a new link between physiological development of a highly derived mammalian tissue, and life history constraints. The heads of vertebrates are recognized as potentially being the body part that shows the most diversity. Toothed whales have evolved very complex and unique cranial adipose tissues for acoustic transmission and reception (echolocation). We show that 1) acoustic tissues develop according to complex, pre-determined patterns established in utero; 2) rates of post-parturition development depend on species-specific timing of independence; early weaning species (porpoises, <1year) attain adult lipid complements lipids much faster than species with extended maternal care periods (dolphins, 3-6 years).

Proceedings of the Royal Society B: Biological Sciences

Proceedings B is the Royal Society's flagship biological research journal, dedicated to the rapid publication and broad dissemination of high-quality research papers, reviews and comment and reply papers. The scope of journal is diverse and is especially strong in organismal biology.

Proceedings of the Royal Society B: Biological Sciences