Sperm whale lobtailing








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Some species of large whales, such as sperm whales Physeter macrocephalus , humpback whales Megaptera novaeangliae , right whales Eubalaena australis, E. Lobtailing occurs more often when a group of females and immatures is socializing than when it is foraging, and there is a good correlation between the occurrence of lobtailing and the occurrence of breaching. Large differences in the lobtailing rate also exist among species of small cetaceans. The function of lobtailing has been subject to much speculation and is not yet clearly understood. Similarly, in humpback whales, lobtailing occurs more often when they are engaged in mating and calving in winter than when they are foraging in summer , and there is also a strong correlation between lobtailing and breaching.

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Breaching Sperm Whale In Kaikoura

Lobtails are often executed in sequences and a particular individual may lobtail over times in a row. As it is generally a contagious phenomenon, it is rare to see only a single individual lobtailing. The function of lobtailing has been subject to much speculation and is not yet clearly understood. Locomotion, Terrestrial marine mammals. What is clear, however, is that there is a very high variability in the occurrence of lobtailing among species.

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Lobtail feeding in whales

Locomotion, Terrestrial marine mammals Previous post. It is a purposeful behavior. Lobtailing is performed differently by large and small cetaceans. However, as the tail slap is produced at the surface, the underwater intensity of the noise is likely to be limited. Lobtails are often executed in sequences and a particular individual may lobtail over times in a row. Baleen whales and sperm whales lobtail when vertically in the water column with their tail flukes high above the water, the stock is then bent and the flukes are slapped forcefully on the water surface Fig. It has often been suggested that lobtails produce a loud percussive noise that can be heard underwater for long distances and thus that lobtailing may serve as a nonvocal acoustic signal.

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Description: Although a large number of cetacean species have been observed lobtailing at least once, quantitative information on lobtailing rate is only available for a very few species. Furthermore, measurements of received levels a few hundred meters from a lobtailing bowhead whale showed that the noises created by the tail slaps were much less intense than their calls. This is the first lobtail of a sequence of eight consecutive lobtails and thus the flukes tend to be still very high above the icater. In winter, when the dolphins tend to feed more individually, very little aerial behavior is observed. Hectors dolphins, or communicate presence to a conspecific. In bowhead whales, it has been shown that tail slapping is at times used as an aggressive act toward conspecifics. However, despite the paucity of quantitative information available on lobtailing rates, it seems that, in general, species with complex social systems have a higher lobtailing rate than species that are more solitary. This is consistent with what has been found for some closely related behavior such as breaching. Lobtailing is performed by the majority of cetacean species. As it is difficult to generalize the occurrence of lobtailing for all species of cetaceans, a few specific examples are given.
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