📋 Tender Overview
The Peruvian Sea Institute - IMARPE carried out biological-population monitoring of the macha resource (Mesodesma donacium) in the natural banks of sandy substrate in the province of Camana, Arequipa region. The activity took place in the months of May and June 2026, in the intertidal zone between the areas of La Chira and El Chural.
The objective of this research was to monitor the population status of the macha by estimating its distribution and abundance in the natural banks where it lives. Likewise, the environmental conditions and the presence of other species associated with these ecosystems were recorded, in order to generate scientific information that contributes to their conservation and sustainable management.
During the field work, the presence of macha specimens was observed in some evaluated sectors, as well as the presence of larvae of the species in front of Pampa Grande. This finding constitutes a positive signal, since it shows the occurrence of reproductive processes and potential natural recruitment, important factors for the recovery of resource populations.
The researchers also monitored environmental parameters such as sea surface temperature and dissolved oxygen. The results showed thermal values that show an unusual warming process in the area. This information will allow a better understanding of the conditions that influence the dynamics of sandy banks and the species that depend on them.
The monitoring included the participation of six artisanal fishermen dedicated to the extraction of macha, who collaborated in the field work. The information obtained will strengthen knowledge about this important marine resource, thus contributing to actions aimed at its management and conservation on the southern coast of the country.
