The ciscoes (Coregonus spp.) of Lake Huron are an enigmatic group of fish that have
experienced declines in populations and a collapse of their ecological communities …

Understanding the emergence of species through the process of ecological speciation is a
central question in evolutionary biology which also has implications for conservation and …

Geometric morphometrics is widely used to quantify morphological variation between
biological specimens, but the fundamental influence of operator bias on data reproducibility …

Life history traits were compared among four morphs of lake trout at Isle Royale, Lake
Superior. Of 738 lake trout caught at Isle Royale, 701 were assigned to a morph (119 …

Repeated adaptive ecological diversification has commonly been reported in fish and has
often been associated with trophic niche diversity. The main goal of this study was to …

Convergence consists in the independent evolution of similar traits in distantly related
species. The mammalian craniomandibular complex constitutes an ideal biological structure …

Objective Here we determine how traditional morphometrics (TM) compares with geometric
morphometrics (GM) in discriminating among morphologies of four forms of ciscoes of the …

A study of body and head development in three sympatric reproductively isolated Arctic
charr (Salvelinus alpinus (L.)) morphs from a subarctic lake (Skogsfjordvatn, northern …

Lipid levels have been reported for lake charr Salvelinus namaycush ecotypes from Lake
Superior, but have not been investigated for all four extant ecotypes concurrently in the …

The non-venomous grass snake (Natrix helvetica) and the venomous adder (Vipera berus)
are two native species that are often found in sympatry in Great Britain and Europe. They …