Annual Growth Rings in Phalanges of Bufo Bufo (Anura, Amphibia) From the Netherlands and Their Use for Age Determination

Abstract

Using hematoxylin-stained cross-sections of phalanges of captured and recaptured toads it is shown that in adult Bufo bufo from the Netherlands year rings are formed. It is concluded that these year rings can be used for age determination, if the degree of resorption of initially formed year rings is known.