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Marine ecosystems face disruption from fishing discards and malnutrition
A 25-year scientific study in Argentina’s northern San Jorge Gulf reveals that decades of fishing discards have fundamentally altered the diet of marine mammals. Researchers from Cenpat report that sea lions, specifically the common and South American sea lion, have shifted from consuming hake to eating growing crustaceans like shrimp and munida due to the constant availability of discarded organic matter.
This practice, which involves discarding an estimated 300,000 tons of non-commercial species annually, has caused significant ecological imbalances. The study notes a fivefold increase in the Kelp Gull population, which has led to direct attacks on Southern Right Whales. Experts also highlight a lack of effective inspections and sanctions to prevent these illegal discards.
In a separate but related environmental concern in Chile, the Coquimbo region has seen a surge in sea lion strandings, with 244 cases recorded compared to a typical annual average of 50. Approximately 65% of these animals were found dead, with many survivors showing signs of severe malnutrition linked to changing ocean conditions.
Entities
Cenpat · Coquimbo · Enrique Crespo · San Jorge Gulf · Sernapesca
Claims
What the coverage asserts, and how many sources carry each claim.
- [● 2 SOURCES] The population of Kelp Gulls has increased fivefold by feeding on fishing discards, impacting Southern Right Whales. elmonterizo.com · www.eldiarioweb.com
- [● 2 SOURCES] Approximately 300,000 tons of dead marine life, including sharks and rays, are discarded annually. elmonterizo.com · www.eldiarioweb.com
- [● 2 SOURCES] A 25-year study in the northern San Jorge Gulf shows sea lions have shifted their diet from hake to shrimp and munida due to fishing discards. elmonterizo.com · www.eldiarioweb.com