Sampling for the study of sex differences in metal concentration and reproductive effort in Fucus vesiculosus

26 June 2024

During the months of April and May 2024, Teresa Boquete, accompanied by Patricia Hermida Sestayo (student of Biology, who was doing her TFG) and Dr. Pilar Diáz Tapia (professor of the USC, who is a phycologist with a scientific production of high impact), carried out different samplings. These samplings were carried out as a screening in 3 locations in order to know the sex ratio in F. vesiculosus. The differences between the sexes in terms of reproductive effort, morphological variables and concentrations of potentially toxic elements will also be determined. Once the methodology has been validated and the results processed, the sampling will be extended to new sites in order to obtain robust conclusions. We just need the elemental analysis; we will update the information!.

Related news

Heavy metal (HM) pollution threatens biodiversity due to its high toxicity and persistence in natural ecosystems. Brown macroalgae, particularly Fucus vesiculosus, can accumulate and tolerate substantial […]
Led by Antón Vázquez-Arias, we collected F.vesiculosus for transplants at 22 locations in Galicia, using automatic samplers. Preliminary results will soon reveal the relationship between PTEs in algae and water.

Marine ecosystems and the impact of heavy metal pollution (HM).

Marine ecosystems, especially those in coastal areas, are particularly vulnerable to heavy metal (HM) pollution since they are subject to both land- and ocean-based pollution sources. Due to their toxicity, persistence, and capacity to biomagnify in the food chain, HMs pose an important threat through lethal and sub-lethal effects at the individual level that might have far-reaching consequences at higher hierarchical levels: populations, communities, and even entire ecosystems.

The cascading effects of pollution can thus jeopardize ecosystems' integrity and undermine their resilience, especially when they impact species with critical ecosystem roles, like macroalgal foundation species.