Extinction and recolonization of maritime Antarctica in the limpet Nacella concinna (Strebel, 1908) during the last glacial cycle: toward a model of Quaternary biogeography in shallow Antarctic invertebrates.

Next-generation transcriptome characterization in three Nacella species (Patellogastropoda: Nacellidae) from South America and Antarctica.

The southern tip of South America and Antarctica are particularly interesting due to many genera and also species currently sharing between both areas. The genus Nacella (Patellogastropoda: Nacellidae) is distributed in different regions of South America and Antarctica living preferentially on rocks and boulders and grazing on algae, diatoms and bacterial films. We described the transcriptomes ...

Feast and famine in Antarctica: seasonal physiology in the limpet Nacella concinna

The few studies of Antarctic marine invertebrates that have previously examined seasonal changes in physiology have concentrated on species that cease feeding for extended periods in the austral winter. In contrast, the limpet Nacella concinna (Strebel, 1908) feeds throughout the year. To compare the differing physiological responses demonstrated by a continually feeding species and species tha...

Influence of glacial runoff on baseline metal accumulation in the Antarctic limpet Nacella concinna from King George Island.

Low-temperature protein metabolism: seasonal changes in protein synthesis and RNA dynamics in the Antarctic limpet Nacella concinna Strebel 1908.

Protein synthesis is a fundamental and energetically expensive physiological process in all living organisms. Very few studies have examined the specific challenges of manufacturing proteins at low ambient temperatures. At high southern latitudes, water temperatures are continually below or near freezing and are highly stable, while food availability is very seasonal. To examine the effects of ...

Differences in heavy metal concentrations and in the response of the antioxidant system to hypoxia and air exposure in the Antarctic limpet Nacella concinna.

During the austral spring and summer months, the Antarctic limpet Nacella concinna colonizes intertidal environments in the Western Antarctica Peninsula region. The species is divided into a permanently sub-littoral and a seasonally intertidal, migratory subpopulation. We investigate the physiological differentiation between the two limpet groups to identify cellular and molecular changes that ...