Search Results for: bergmann's rule

Bergmann’s Rule

April 4, 2010 By arne hendriks 1

Songbirds in the US are getting smaller, and climate change is suspected as the cause. A study of almost half a million birds, belonging to over 100 species, shows that many are gradually becoming lighter and growing shorter wings. This shrinkage has occurred within just…

Shrinking Human Clickbait?

June 16, 2022 By arne hendriks Off

Hmmm, interesting. In the context of what seems to be the promotion of a new book on mammals, professor Steve Brusatte of the University of Edinburgh lists several all too well-known examples related to the phenomenon of shrinking as a survival mechanism when temperatures rise…

Small Amazonians

November 27, 2021 By arne hendriks Off

Birds are sensitive indicators of environmental change. A recent study of understory birds of the Amazon rainforest over a timespan of 40 years and 77 species shows again that most birds are adapting to the current drastic environmental changes by becoming smaller. By zooming in…

Red Knot Protein Transition

May 13, 2016 By arne hendriks 0

Various animal species are responding to global warming by reducing their body size. In the mid 19th century biologists had already observed the ecogeographic principle that within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations…

Fish Representatives

February 16, 2013 By arne hendriks 1

In most genetics research, Homo sapiens is represented by small fish like Danio rerio (zebrafish)  and Oryzias latipes (Japanese rice fish). Both are important model organisms, representing man in developmental genetics, neurophysiology and biomedicine. When we tinker with genes what happens to the fish is…