Whether birth weight plays an independent role in developing high BP in adult life, as well as the effect of postnatal body size change on BP, need to be further elucidated.
A recently published experimental study used a body illusion to confirm Poincaré's notion that changing body size changes the perceived size of objects ("Barbie-doll illusion"; van der Hoort, Guterstam, & Ehrsson, 2011).
To understand the mechanisms of life-history and size evolution on islands but also in cases of significant body size changes in mainland lineages, histology of hard tissues is a powerful tool, as has been demonstrated for 'dwarf' and 'giant' sauropod [ 10- 12] and tyrannosaurid [ 13] dinosaurs, as well as early synapsids [ 14, 15] among fossil forms.
First noted in 1964, this pattern of body size changes in insular mammals became known as the "Island Rule".
The UK Collaborative Trial of Ovarian Cancer Screening (UKCTOCS), 30 with comprehensive follow-up, provides the opportunity to examine the association of body size changes with breast cancer risk in a large prospective cohort.
These island dwarfs are informative for the evolution of body size changes in sauropods because they show that the decrease in body size evolved through a decrease in growth rate (Sander et al., 2006; Stein et al., in press), the reverse of what is seen in the evolutionary increase in growth rate leading to the first large sauropods (Sander et al., 2004).
Using this robust phylogeny for the family and considering ancient fossil amphiumids, we present hypotheses for the evolution of extreme body size changes and its implications for ecological and genetic divergence in this family.
Our results, therefore, suggest that processes governing body size changes are important in the diversification of body shape in P. vivipara.
These findings are highlighted by the results of Teplitsky and Millien (2014) who focused on temporal body size clines in vertebrates: None of studies listed in their Table 2 provide evidence for genetic basis of observed body size changes.
Processes governing body size changes are therefore important in the diversification of this species.
