changes in the fatty acid composition and biochemical indices of mackerel (which has a substantial lipid content) and shark (which has negligible lipid content) fillets stored at - 18°c for up to six months were measured. lipid content was measured (6.35% and 1.38%) in mackerel and shark, respectively; however it decreased during frozen storage in both fish species. in analysis of fatty acids t...

In the course of the evaluation of the species belonging to the Section Salvia of the genus Salvia (Family Lamiaceae) the essential oil content and the composition of the species have been investigated with special respect to their neurotoxic α-, and β-thujone content. It could be established that from among the species S. lavandulifolia Vahl., S. candelabru Boiss., S. tomentosa Mill., (S. gran...

Inbreeding in plants causes various declines in fitness estimates across many species and may also affect adaptive phenotypic plasticity, as observed in tolerance to herbivory. Although there are a growing number of studies looking at this effect, there are still not enough to make general conclusions about the relationship between homozygosity and tolerance or resistance. In this work, we exam...

Migratory divides, the boundary between adjacent bird populations that migrate in different directions, are of considerable interest to evolutionary biologists because of their alleged role in speciation of migratory birds. However, the small size of many passerines has traditionally limited the tools available to track populations and as a result, restricted our ability to study how reproducti...

Evolutionary biologists seek to understand the genetic basis for multivariate phenotypic divergence. We constructed an F2 mapping population (N = 539) between two distinct populations of Mimulus guttatus. We measured 20 floral, vegetative, and life-history characters on parents and F1 and F2 hybrids in a common garden experiment. We employed multitrait composite interval mapping to determine th...

Depending on animal size, shape, body plan and behaviour, variation in surface structure can affect the speed and ease of locomotion. The slope of branches and the roughness of bark both vary considerably, but their combined effects on the locomotion of arboreal animals are poorly understood. We used artificial branches with five inclines and five peg heights (≤40 mm) to test for interactive ef...