Minke whales are as small as a lunge-feeding baleen whale can be. Research on the feeding behavior of Antarctic minke whales found that a smaller whale could not capture enough food to survive using the lunge-feeding strategy of baleen whales. A new study of Antarctic minke whales reveals a mi
A new study found that smaller Antarctic minke whales would not be able to survive, as they would not capture enough food using the lunge-feeding method of baleen whales.Research on the feeding behavior of Antarctic minke whales found that a smaller whale could not capture enough food to survive using the lunge-feeding strategy of baleen whales.
The ability to engulf large amounts of prey-laden water is essential to making this feeding strategy pay off, and the energy efficiency increases with larger body size. An 80-ton blue whale, for example, can engulf a water volume equivalent to 135% of its body mass, whereas a 5-ton minke whale can engulf a volume equal to 42% of its body mass.
Researchers used noninvasive suction tags to observe Antarctic minke whales’ behavior as they fed on Antarctic krill in the waters off of the West Antarctic Peninsula. Credit: Photo by David Cade, Hopkins Marine Station, Stanford University “During the day they feed at depths comparable to humpbacks and blue whales, but their foraging rates aren’t as high because they’re smaller,” Cade said. “Their nighttime feeding rates are two to five times the day rate.”
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