In the last 50 years, this phenomenon has been more frequent and intense throughout the world, encompassing broader geographic sectors. What are FANs? They are not tides, nor are they all red It is a natural phenomenon that occurs when the density of some harmful microalgae in aquatic environments increases excessively. This causes the death of organisms, the contamination of species and the alteration of ecosystems. Harmful microalgae are...

It is the action of returning to the sea the species caught unintentionally in fishing operations. Why happens? Sometimes nets catch, along with commercial interest species, others that cohabit with them, which are discarded since they have no economic value, or are species with a ban or fishing quotas, whose landing is sanctioned. How to reduce it? Through fishing gear designs improvements and detection technologies that allow capturing only...

It is the prohibition to capture marine resources in the months that they are spawning or laying their eggs. Thus, it is possible to protect their reproductive process and maintain the renewal of populations, particularly those species that mature late or are more vulnerable to fishing action. Octopus: It reproduces for the first time at 4-6 months of age, with 12.5 cm Anchovy: at 11 months; 12 cm Red...

These vessels have specialized equipment and laboratories to estimate biomass ( fish abundance ) or fishery resources spatial distribution . In addition, and among other tasks, they monitor environmental and oceanographic conditions to predict and relate marine fauna behavior with environmental conditions. How is fish biomass determined? In scientific vessels there are sensors that emit sound waves that bounce off the shoals, producing a return echo, which allows the...

This process is essential to investigate species life cycle such as swordfish, sharks and sea turtles. Once species has been tagged, information on its movement and growth can be obtained. There are different types of brands, among which satellite and conventional ones stand out. Between Arica and Lebu, 4 species of sea turtles have been recorded, all threatened with extinction. Did you know? A Bluebird Shark was tagged and...

Knowing fish age, each generation abundance and biomass can be determined. Data such as the number of fish that are born each year, their growth rate and life span, are essential to establish fishing quotas and thus maintain fishing resources. Did you know? Otoliths are pairs of calcareous structures that fish have in the inner ear of their skull, which provide balance and hearing. Fishing biology uses otoliths as...

They are important indicators of oceans and their marine resources health : knowledge of their populations, migrations and food, gives us signals of the state of ecosystems and their changes over time. Chile belongs to the Agreement on the Conservation of Albatrosses and Petrels (ACAP). These birds have been the most affected by bycatch in fishing activities, so international cooperation is necessary for their conservation. * Albatrosses are large...

The authorities are investigating the causes and do not rule out that they are a consequence of human action. But Luis Parot Donoso, from the Fisheries Development Institute, assures DW that it is a natural phenomenon. Source : DW Twitter

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Sorry, this entry is only available in Es.

Sorry, this entry is only available in Es.

Sorry, this entry is only available in Es.

Sorry, this entry is only available in Es.

Sorry, this entry is only available in Es.