Results 1 to 10 of about 896,121 (306)

The role of vaccination and public awareness in forecasts of Mpox incidence in the United Kingdom [PDF]

Nature Communications, 2023
Beginning in May 2022, Mpox virus spread rapidly in high-income countries through close human-to-human contact primarily amongst communities of gay, bisexual and men who have sex with men (GBMSM).
Samuel P. C. Brand, Massimo Cavallaro, Fergus Cumming, Charlie Turner, Isaac Florence, Paula Blomquist, Joe Hilton, Laura M. Guzman-Rincon, Thomas House, D. James Nokes, Matt J. Keeling   +10 more
doaj   +2 more sources

Extreme Reversed Sexual Dichromatism in a Bird Without Sex Role Reversal [PDF]

Science, 2005
Brilliant plumage is typical of male birds, reflecting differential enhancement of male traits when females are the limiting sex. Brighter females are thought to evolve exclusively in response to sex role reversal. The striking reversed plumage dichromatism of Eclectus roratus parrots does not fit this pattern.
Heinsohn, Robert, Legge, Sarah, Endler, John A.   +2 more
openaire   +6 more sources

Sexual Conflict: The Battle of the Sexes Reversed [PDF]

Current Biology, 2008
In most species one sex is more reluctant to mate than the other. Standard explanations invoking potential reproductive rates have shortcomings that are illustrated by a new study of eager female and reluctant male antelopes.
Kokko, Hanna, Jennions, Michael
openaire   +3 more sources

Epigenetic modification and inheritance in sexual reversal of fish [PDF]

Genome Research, 2014
Environmental sex determination (ESD) occurs in divergent, phylogenetically unrelated taxa, and in some species, co-occurs with genetic sex determination (GSD) mechanisms. Although epigenetic regulation in response to environmental effects has long been proposed to be associated with ESD, a systemic analysis on epigenetic regulation of ESD is still ...
Shao, Changwei, Li, Qiye, Chen, Songlin, Zhang, Pei, Lian, Jinmin, Hu, Qiaomu, Sun, Bing, Jin, Lijun, Liu, Shanshan, Wang, Zongji, Zhao, Hongmei, Jin, Zonghui, Liang, Zhuo, Li, Yangzhen, Zheng, Qiumei, Zhang, Yong, Wang, Jun, Zhang, Guojie   +17 more
openaire   +4 more sources

Switches, stability and reversals in the evolutionary history of sexual systems in fish [PDF]

Nature Communications, 2021
Abstract Sexual systems are highly diverse and have profound consequences for population dynamics and resilience. Yet, little is known about how they evolved. Using phylogenetic Bayesian modelling and a sample of 4614 species, we show that gonochorism is the likely ancestral condition in teleost fish.
Susanna Pla, Chiara Benvenuto, Isabella Capellini, Francesc Piferrer   +3 more
openaire   +7 more sources

Reversed Sexual Conflict in a Promiscuous Antelope [PDF]

Current Biology, 2007
A general tenet of sexual conflict theory is that males have higher optimum mating rates than do females and therefore should be more persistent when it comes to mating. However, in promiscuous species, females might benefit from high mating rates as a result of increased conception probability with favored males, whereas favored males benefit from ...
openaire   +2 more sources

Masculinização de larvas de tilápia do Nilo (Oreochromis niloticus L.) a partir de banhos de imersão com 17alfa-metiltestosterona Masculinization of larvae of Nile tilapia (Oreochromis niloticus L.) by immersion baths with alpha-methyltestosterone

Revista Brasileira de Zootecnia, 2005
Determinaram-se os períodos ontogênicos de maior sensibilidade das larvas de tilápias do Nilo (Oreochromis niloticus) à masculinização, com 17 alfa-metiltestosterona (MT), a partir de banhos de imersão, contendo 2,0 mg MT.L-1, por 36 horas, em um ...
Robie Allan Bombardelli, Carmino Hayashi
doaj   +1 more source

Probing the floral developmental stages, bisexuality and sex reversions in castor (Ricinus communis L.)

Scientific Reports, 2021
Castor (Ricinus communis L) is an ideal model species for sex mechanism studies in monoecious angiosperms, due to wide variations in sex expression. Sex reversion to monoecy in pistillate lines, along with labile sex expression, negatively influences ...
Sujatha Thankeswaran Parvathy, Amala Joseph Prabakaran, Thadakamalla Jayakrishna   +2 more
doaj   +1 more source

Fontes protéicas suplementadas com aminoácidos e minerais para a tilápia do Nilo durante a reversão sexual Protein sources supplemented with amino acids and minerals to Nile tilapia during sex reversal phase

Revista Brasileira de Zootecnia, 2005
Objetivou-se, no presente experimento, comparar o efeito da origem da fonte protéica e da suplementação com lisina e metionina ou cálcio e fósforo para a tilápia do Nilo (Oreochromis niloticus), durante a reversão sexual.
Fábio Meurer, Carmino Hayashi, Wilson Rogério Boscolo, Christiano Rodrigues Schamber, Robie Allan Bombardelli   +4 more
doaj   +1 more source

Male refractory hypospadias with sexual reversal: a case report

Journal of Medical Case Reports, 2023
Abstract Background Hypospadias is one of the most prevalent urogenital malformations in clinic. However, some hypospadias may have a more complex disorder of sex development. Usually, hypospadias in these patients is severe. Among them, the 46,XX male sex reversal syndrome is a rare disorder of sex development, and this
Jianfeng Zhao, Gang Chen, Jun Chen, Le Qian   +3 more
openaire   +3 more sources