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“The acoustic behavior of whales provides information on which species adapt better to changes in ocean conditions.” Jubart is the least weird at mealtime.
We have long been able to hear the beautiful songs of whales, but only very recently do we know that these songs also contain “Letters” Revealing about the life of these sea animals.
A team of researchers found that the corners of the Pacific Ocean whales, which migrate along the west coast of the United States, are a track for the types of food available.
With underwater microphones (hydropones), the team followed the songs, traveling thousands of kilometers from three whale species (blue whale, common whale and jubart whale) for six years, according to February 26 at PLOS One.
Scientists have found that the jubarts sang more and more over the years: It was detected in 34% of the days in the first year, and in 76% of the days at the end of the study. Apparently, at the beginning of the study, there was a growing abundance of krill (set of species of shrimp -like invertebrate animals) followed by a peak in the presence of anchovies – Two “dishes” coveted by the species.
The corner of the blue whale and the common whale, in turn, increased only during the years when Krill was more abundant, unlike the jubart, which seem to be more adaptable-alternated among prey depending on availability.
Whales adjusted their feed patterns in response to the availability of different prey – whale skin biopsy samples confirmed these diet changes.
“Surprisingly, the acoustic behavior of whales provides information on which species adapt better to changes in ocean conditions,” he said in John Ryanco -author of the study and biological oceanographer at the Monterey Bay Aquarium Research Institute: “Our findings can help resource managers and political makers better protect endangered whales.”
