Exploring Diversity, Taxonomy and Phylogeny of Diatoms (Bacillariophyta) from Marine Habitats. Novel Taxa with Internal Costae.

In many marine littoral and sublittoral benthic habitats, we find small diatoms with few features resolvable with light microscopy (LM) other than internal costae across their valves. While classically those internal costae have defined their identification and classification, the use of electron microscopy and of molecular data have started to reveal the true diversity of unrelated forms and genera (e.g.

Rainbow trout (Oncorhynchus mykiss) shift the age composition of circulating red blood cells towards a younger cohort when exposed to thermal stress.

Freshwater fish, such as the rainbow trout, are commonly exposed to temperature fluctuations in their aquatic environment. Exposure to increased temperatures places fish under respiratory stress and increases the likelihood of protein misfolding and degradation that could eventually lead to cell death. Previously, we showed that genes associated with the cellular stress response, apoptosis and hematopoiesis are upregulated in the red blood cells (RBCs) of rainbow trout post-thermal stress, leading to the hypothesis that a tightly regulated interaction between cell repair and cell death is occurring after heat stress.