Immune suppression of the echinoderm Asterias rubens (L.) following long-term ocean acidification.

Cell-Mediated and Humoral Immune Responses in the Sea-Star Asterias Rubens (Echinoderm): Notion of Invertebrate Primitive Antibody

Cell-mediated Immune Responses in the Sea-star Asterias Rubens (echinoderm)

Cell-mediated immune responses occur in sea star system. In Asterias rubens it is said that B sea star lymphocytes and T sea star lymphocytes exist in the axial organ which can be considered as an ancestral lymphoid organ. In the same manner the origin of lymphocytes can be found in Invertebrates such as Echinodermal.

Field contamination of the starfish Asterias rubens by metals. Part 2: Effects on cellular immunity.

To study the effects of metals on starfish in field conditions, immune responses were measured in starfish from natural populations along a metal pollution gradient (long-term contamination) and in starfish that were transferred up the gradient (short-term contamination). Coelomic amoebocyte concentration (CAC) and production of reactive oxygen species (ROS) by amoebocytes were measured in two ...

Induced cell proliferation in putative haematopoietic tissues of the sea star, Asterias rubens (L.).

The coelomic fluid of the echinoderm Asterias rubens possesses large populations of circulating coelomocytes. This study aimed to expand the knowledge about the haematopoietic sources of these cells. Injection of the immune-stimulating molecules lipopolysaccharide (LPS) and concanavalin A (ConA) resulted in an increase in coelomocytes. To investigate if these molecules induce cell proliferation...

Sour times: seawater acidification effects on growth, feeding behaviour and acid–base status of Asterias rubens and Carcinus maenas

The impact of seawater acidification on calcifying organisms varies at the species level. If the impact differs between predator and prey in strength and/or sign, trophic interactions may be altered. In the present study, we investigated the impact of 3 different seawater pCO2 levels (650, 1250 and 3500 μatm) on the acid–base status or the growth of 2 predatory species, the common sea star Aste...