Vliv prostředí na strukturu polárních planktonních společenstev

Using DNA metabarcoding and bioinformatic analysis this study shows, how planktonic communities react on environmental variables (temperature, oxygen concentration, depth, fluorescence, salinity, latitude and longitude). This study also compares arctic and antarctic diplonemid communities

Porovnání populační struktury hostitele a parazita na systému Sépie obecná - Dicyemida.

Using analysis of mitochondrial DNA this study explores the population structure of parasite (Dicyemida sp.) and its host (Sepia officinalis) in Mediterranean sea

Water masses shape pico-nano eukaryotic communities of the Weddell Sea

DNA metabarcoding of pelagic protists in the Weddell Sea expands our understanding of their ecological role and interactions throughout the water column

Population co-divergence in common cuttlefish (Sepia officinalis) and its dicyemid parasite in the Mediterranean Sea.

Population structure and biogeography of marine organisms are formed by different drivers than in terrestrial organisms. Yet, very little information is available even for common marine organisms and even less for their associated parasites. Here we report the first analysis of population structure of both a cephalopod host (Sepia officinalis) and its dicyemid parasite, based on a homologous molecular marker (cytochrome oxidase I). We show that the population of common cuttlefish in the Mediterranean area is fragmented into subpopulations, with some areas featuring restricted level of gene flow. Amongst the studied areas, Sardinia was genetically the most diverse and Cyprus the most isolated. At a larger scale, across the Mediterranean, the population structure of the parasite shows co-diversification pattern with its host, but a slower rate of diversification. Differences between the two counterparts are more obvious at a finer scale, where parasite populations show increased level of fragmentation and lower local diversities. This discrepancy can be caused by local extinctions and replacements taking place more frequently in the dicyemid populations, due to their parasitic lifestyle