Social unit of male sperm whales
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Long-term associations among male sperm whales (Physeter . . .
Sperm whale - Wikipedia
Social Structure of Sperm Whales in the Northern Gulf of . . .
Kinship influences sperm whale social organization within . . .
Vocal repertoires and insights into social structure of . . .
Sperm Whale | NOAA Fisheries
Sperm whale - IWC
How does social behavior differ among sperm whale clans . . .
PDF Vocal clans in sperm whales (Physeter macrocephalus)
Sperm Whales Form Clans to Fight Off Orcas | Live Science
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Little is known about the social structure of male sperm whales (Physeter macrocephalus) after they leave their natal units . While previous studies found no evidence for preferred associations among males, the observation of mass-strandings consisting exclusively of males, suggest that they have strong social bonds .
The sperm whale or cachalot (Physeter macrocephalus) is the largest of the toothed whales and the largest toothed predator .It is the only living member of the genus Physeter and one of three extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia . . The sperm whale is a pelagic mammal with a worldwide range, and will migrate seasonally . . .
whalers perceived groups of sperm whales as male-dominated harems, we now know that the core social unit'i (so-called mixed groups) consist of adult females and thcit· immature offspring, which remain together for years to decades . Large breeding bulls Yisit these mixed groups only rarely and for brief periods (Whitehead,
Female and juvenile sperm whales live in 'social units' that are stable over a time frame of years [ 15, 16 ], from which males disperse before sexual maturity to live primarily solitarily or with other males [ 17 ] . Social units sometimes join together to form temporary 'groups', which can last hours to days [ 16 ] .
social structure, social unit, sperm whale, vocal clan, vocal repertoire 1 | INTRODUCTION The sperm whale (Physeter macrocephalus Linnaeus 1758) is a cosmopolitan, deep-water odontocete (Rice, 1989) . It has a complex social structure, characterized by different levels of social groupings based on sex and age (see review by Whitehead, 2003) .
While females generally stay with the same social unit in and around tropical waters their entire lives, young males will leave when they are between 4 and 21 years old and can be found in "bachelor schools," composed of other males that are approximately the same age and size .
Sperm whales form highly stable social groups based around related females and their offspring . These groups tend to live in open ocean areas, and are occasionally visited by males who range widely across the oceans . Calves are born after a 14-16 month gestation period, and stay with their mothers for many years .
Sperm whales are organized into sympatric clans, with distinctive vocal repertoires that are socially learned . Other behaviors, such as movement patterns and foraging, also differ among clans . Here we ask whether the clan partition also includes divergences in social behavior .
whitelab .biology .dal .ca/lr/vocal clans in sperm whales .pdf
whale social groups . Codas are patterns of clicks used by female sperm whales in social circumstances . The coda repertoires of all known social units (n= 18, each consisting of about 11 females and immatures with long-term relationships) and 61 out of 64 groups (about two social units moving together for periods
Sperm whales like this one in New Zealand can consume up to a ton of food a day . Adult males can reach 60 feet in length and females up to 36 feet; their massive head makes up to a third of their . . .
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Social unit of male sperm whales
