Squid population is growing in the oceans: Details of the new research
A modeling study led by marine biologist Rémy Denéchère showed that the main reason for the global increase in squid population may be the amount of food.
The long-observed increase in the populations of squid and other cephalopod species worldwide has been addressed in a new scientific modeling study, yielding results that challenge established assumptions about population dynamics.
Increase in Squid Population
It has long been known that squid and other cephalopods have been increasing worldwide. This rise was previously attributed mostly to the decline of apex predators due to overfishing and rising seawater temperatures.
The Role of Food Availability
A new modeling study by marine biologist Rémy Denéchère and his team revealed that these two factors alone are not enough to explain the proliferation of squids. It was understood that the primary determining factor may be the amount of food available to them.
The Impact of Predator Decline
While the decline of apex predators increases the number of small fish, this means more food for squids. Squids benefit indirectly from the reduction of predators in this way.
The Relationship Between Temperature and Metabolism
It was observed that high temperatures do not increase squid biomass; on the contrary, they elevate metabolic rates, leading to a greater need for energy and potentially suppressing the population when sufficient food is not available.
Rapid Adaptation to the Ecosystem
According to scientists, the greatest advantage of squids is their ability to rapidly adapt to changing ecosystems thanks to their very fast growth and short life cycles, acting as early invaders.
Long-Term Risks
Researchers state that this advantage is not unlimited, and if food sources decrease and seas continue to warm, squid populations could also decline in the long run.