Results 51 to 60 of about 201,532 (162)

Demography of the giant otter (Pteronura brasiliensis) in Manu National Park, south-eastern Peru: implications for conservation. [PDF]

PLoS ONE, 2014
The giant otter (Pteronura brasiliensis) is an endangered semi-aquatic carnivore of South America. We present findings on the demography of a population inhabiting the floodplain of Manu National Park, south-eastern Peru, arising from 14 annual dry ...
Jessica Groenendijk, Frank Hajek, Paul J Johnson, David W Macdonald, Jorge Calvimontes, Elke Staib, Christof Schenck   +6 more
doaj   +1 more source

Diurnal preference and sleep quality: same genes? A study of young adult twins [PDF]

, 2010
The aims of this study were to examine the genetic and environmental influences on diurnal preference and sleep quality, the association between these phenotypes, the genetic and environmental influences on this association, and the magnitude of overlap ...
Nicola L. Barclay, Thalia C. Eley, Daniel J. Buysse, Simon N. Archer, Alice M. Gregory, American Academy of Sleep Medicine, Archer SN, Archer SN, Borbely AA, Borbely AA, Brummett BH, Buysse DJ, Carrier J, Cohen DJ, Daan S, Dijk D, Drennan SJ, Edinger JD, Gregory AM, Gregory AM, Gregory AM, Heath AC, Horne JA, Katzenberg D, Lee HJ, McGue M, Meltzer H, Neale MC, Neale MC, Neale MC, Ohayon M, Ohayon M, Ong JC, Paunio T, Sham P, Shiihara Y, Smith CS, Talliard J, Virtanen P, Waterhouse J   +39 more
core   +1 more source

Intersexual relationships in mandrills: dominance, sexual conflict and the influence of social integration

Revue de Primatologie
The conflict of evolutionary interests between the sexes is commonly imprinted in social dynamics and physical asymmetries between the sexes. In species that live in polygynandrous groups, male-biased sexual size dimorphism often allows males to socially
Nikolaos Smit
doaj   +1 more source

Pupil dilations reflect why Rembrandt biased female portraits leftward and males rightward

Frontiers in Human Neuroscience, 2014
Portrait painters are experts at examining faces and since emotional content may be expressed differently on each side of the face, consider that Rembrandt biased his male portraits to show their right cheek more often and female portraits to show their ...
James A Schirillo
doaj   +1 more source

Sexual conflict over breeding substrate causes female expulsion and offspring loss in a cichlid fish [PDF]

, 2017
Females of the Lake Tanganyika cichlid Lamprologus callipterus exclusively breed in empty snail shells that males collect in their territories. Male-male competition for shells is severe, leading to frequent shell stealing and territory takeover.
Maan, Martine E., Taborsky, Michael
core  

Studies on Resistance to Vegetative (Vip3A) and Crystal (Cry1A) Insecticidal Toxins of Bacillus thuringiensis in Heliothis virescens (Fabricius) [PDF]

, 2009
Bacillus thuringiensis (Bt) toxins expressed in commercial transgenic crop varieties are all δ-endotoxins (Cry toxins) but the identification of novel vegetative insecticidal proteins (Vip toxins) has extended the range of insecticidal proteins derived
Pickett, Brian R, Pickett, Brian R
core   +1 more source

Drivers of female power in bonobos

Communications Biology
In mammals, female dominance over males is a rare phenomenon. However, recent findings indicate that even in species with sexual dimorphism biased towards males, females sometimes occupy high status.
Martin Surbeck, Leveda Cheng, Melodie Kreyer, Gerrit Gort, Roger Mundry, Gottfried Hohmann, Barbara Fruth   +6 more
doaj   +1 more source

Juvenile rank acquisition is associated with fitness independent of adult rank [PDF]

, 2020
Social rank is a significant determinant of fitness in a variety of species. The importance of social rank suggests that the process by which juveniles come to establish their position in the social hierarchy is a critical component of development. Here,
Holekamp, Kay E., Shizuka, Daizaburo, Strauss, Eli D.   +2 more
core   +1 more source

Digit ratio (2D:4D) and gender inequalities across nations [PDF]

, 2014
Gender inequality varies across nations, where such inequality is defined as the disproportionate representation of one sex over the other in desirable social, economic, and biological roles (typically male over female).
Fink, Bernhard, Manning, John, Trivers, Robert   +2 more
core   +2 more sources

Sex and lateral dominance effects on learning a complex gymnastic skill

Physical Education of Students
Background and Study Aim. The development of motor skills is influenced by various biological and biomechanical factors. Among these, sex-based characteristics and lateral dominance are known to shape movement strategies and performance outcomes. Despite
Sunčica Delaš Kalinski, Ana Penjak, Mario Tomljanović   +2 more
doaj   +1 more source