Extreme fertilization bias towards freshly inseminated sperm in a species exhibiting prolonged female sperm storage [PDF]
Royal Society Open Science, 2018 The storage of sperm by females across successive reproductive cycles is well documented in internal fertilizers, yet the fate of stored sperm when they compete with ‘new’ sperm to fertilize a female's eggs has rarely been considered.
Clelia Gasparini +2 more
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Bystanders, parcelling, and an absence of trust in the grooming interactions of wild male chimpanzees [PDF]
, 2016 The evolution of cooperation remains a central issue in socio-biology with the fundamental problem of how individuals minimize the risks of being short-changed (‘cheated’) should their behavioural investment in another not be returned. Economic decisions
Kaburu, Stefano S. K. +1 more
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‘I don't think I can catch it’: women, confidence and responsibility in football coach education [PDF]
, 2011 Whilst women’s participation in sport continues to increase, their presence remains ideologically challenging given the significance of sport for the construction of gendered identities.
Bains J. +19 more
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Social bonds and genetic ties: Kinship association and affiliation in a community of bonobos (Pan paniscus) [PDF]
, 1999 Studies of captive populations of bonobos suggest that females are more gregarious than males. This seems to contradict assumed sex-differences in kinship deriving from a speciestypical dispersal pattern of female exogamy and male philopatry.
Fruth, Barbara +3 more
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The Evolution of Primate Societies - Chapter 3 [PDF]
, 2012 Compared with other primates, New World monkeys display relatively limited ecological variability. New World monkey anatomy and social systems, however, are extremely diverse.
Di Fiore, Anthony +2 more
core
Nest-Site Selection by Female Black-Capped Chickadees: Settlement Based on Conspecific Attraction? [PDF]
, 1999 Female Black-capped Chickadees (Poecile atricapillus) solicit extrapair copulations (EPCs) from neighboring high-ranking males, and these EPCs result in extrapair young.
Otter, Ken A. +2 more
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Sex differences in insular cortex gyri responses to a brief static handgrip challenge
Biology of Sex Differences, 2017 Background Cardiovascular disease varies between sexes, suggesting male-female autonomic control differences. Insular gyri help coordinate autonomic regulation and show a sex-dependent response to a sympathetic challenge.
Paul M. Macey +5 more
doaj +1 more source
Are there sex differences in the body size of the Eurasian red squirrel in Slovakia? [PDF]
, 2015 Sexual dimorphism of the Eurasian red squirrel on five somatic variables (head-and-body length, tail length, hind foot length, ear length and body weight) was evaluated on 55 squirrels.
Krišovský, Peter +2 more
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The relationship of life stage to daily social patterns of captive African elephants (Loxodonta africana) and the correlation of handler perceptions of elephant personality to demonstrated social behaviors [PDF]
, 2017 Elephants typically have very strong social bonds, and social interactions can include affiliative, agonistic, or ambiguous behaviors. The social interactions and dominance hierarchy between individuals of a herd depend upon many factors, including ...
Jeffrey, Alison
core +1 more source
Negative phenotypic and genetic associations between copulation duration and longevity in male seed beetles [PDF]
, 2009 Reproduction can be costly and is predicted to trade-off against other characters. However, while these trade-offs are well documented for females, there has been less focus on aspects of male reproduction.
AA Hoffmann +69 more
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