Hibernation constrains brain size evolution in mammals
نویسندگان
چکیده
منابع مشابه
Sperm competition and brain size evolution in mammals.
The 'expensive tissue hypothesis' predicts a size trade-off between the brain and other energetically costly organs. A specific version of this hypothesis, the 'expensive sexual tissue hypothesis', argues that selection for larger testes under sperm competition constrains brain size evolution. We show here that there is no general evolutionary trade-off between brain and testis mass in mammals....
متن کاملAllomaternal care, life history and brain size evolution in mammals.
Humans stand out among the apes by having both an extremely large brain and a relatively high reproductive output, which has been proposed to be a consequence of cooperative breeding. Here, we test for general correlates of allomaternal care in a broad sample of 445 mammal species, by examining life history traits, brain size, and different helping behaviors, such as provisioning, carrying, hud...
متن کاملSocial life, evolution of intelligence, behaviour and human brain size
Social life is one of the most critical factors of the evolution of the behavior of non-human primates and humans. Several factors, such as an increase in brain size, adaptive modules, and grooming, are related to the complexities of social groups. Although some scientists have mentioned foraging as a rival hypothesis for the evolution of behavior, in this research, we tried to investigate the ...
متن کاملAdaptive evolution toward larger size in mammals.
The notion that large body size confers some intrinsic advantage to biological species has been debated for centuries. Using a phylogenetic statistical approach that allows the rate of body size evolution to vary across a phylogeny, we find a long-term directional bias toward increasing size in the mammals. This pattern holds separately in 10 of 11 orders for which sufficient data are available...
متن کاملHibernation and daily torpor in Australian mammals
Australia is the continent with the taxonomically most diverse mammal fauna. The approximately 300 species of Australian terrestrial mammals belong to the three extant mammalian subclasses the Monotremata (Prototheria egg-laying mammals, 2 species), Marsupialia (Metatheria pouched mammals, ~160 species), and Placentalia (Eutheria placental mammals, bats ~76 species, rodents ~65 species) (Menkho...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 2018
ISSN: 1010-061X
DOI: 10.1111/jeb.13353