#SexualDimorphism
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pnas.org
For the feral #sheep on the remote St Kilda islands of #Scotland, long-term success hinges on the first year of life, especially for males. Here are the interesting reasons why: www.pnas.org/post/journal...

#ecology #EvolutionaryEcology #SexualDimorphism #SexualSelection
April 29, 2025 at 7:37 PM
pjcardona14.bsky.social
Thanks so
much for the invitation @irbbarcelona.org ! I hope this will raise the interest in #drosophila as a #experimentalmodel for #tuberculosis #hostpathogen #coevolution #sexualdimorphism #mdr #antibiotics #chemotherapy #toxicology and #regulatory @igtp.bsky.social
February 24, 2025 at 10:09 AM
wenlax.bsky.social
Male and female Mandarin Ducks.

Trent Park, Enfield, #London. December 2024.

#birds #birdphotography #ukwildlife #mandarinduck #sexualdimorphism
Two ducks on water. Further behind and slightly out of focus, the female is brown, with spotted white and brown breast. In contrast, the male, towards the front, is extremely colourful, with shades of bright orange, greens, blues, browns, black and white (also with black and white stripes), and two 'sails' at its flanks.
December 30, 2024 at 6:52 PM
spetologia.bsky.social
doi.org/10.1016/j.an...
#SPEetologia

This work was the July #ASABEditorsChoice for the #AnimalBehaviourJournal 👏👏👏

#DeepLearning #SexualDimorphism #AIinBiology #BirdResearch #SociableWeaver #Ornithology #GradCAM #WildlifeAI #CrypticDimorphism #MachineLearning #SexRecognition #AnimalAI
Redirecting
doi.org
July 29, 2025 at 8:31 AM
plosbiology.org
Wiring the sexes: @evolvwing.bsky.social &co use CRISPR knockouts & single-nucleus transcriptomics to decipher the regulatory logic of #SexualDimorphism in sulphur #butterflies, where males display bright UV colors thanks to specialized iridescent scales @plosbiology.org 🧪 plos.io/445Iz7d
Left: Scanning electron micrograph of two male-specific scale types found on the wings of male sulphur butterflies, with UV-iridescent scales (pink) and brown lanceolate scale from the marginal region. Image credit: Arnaud Martin / The George Washington University. Right: UV coloration, which is invisible to the human eye, is used as a male courtship signal in orange sulphur butterflies, shown here in magenta. Butterfly wings consist of two layers of microscopic scales, and in UV-iridescent butterflies, the upper layer harbors unique optical properties. These scales reflect ultraviolet thanks to complex layers of chitin on their surfaces, a nanostructure that resembles Christmas trees and is absent from non-UV scales. Image credit: Illustration by Julie Johnson/Life Science Studios (CC-BY license agreement provided to Arnaud Martin)
June 19, 2025 at 5:10 PM
kubotaproductions.bsky.social
figuring out the #speculativebiology of the Syllabubs has been a treat, long meandering discussions about why certain traits would stick around while others get booted, and why exactly a creature like the syllabub would be designed for.

#specbio #speculativeevolution #mammal #sexualdimorphism
February 5, 2025 at 8:33 AM
helenedef.bsky.social
New paper out now in #ProcB @royalsocietypublishing.org

We explored how sex loss shapes gene expression patterns by comparing sexual & asexual aphid lineages 🧬🪲

🔑 #SexualAntagonism #Parthenogenesis #Asexuality #Transcriptomics #SexBiasedExpression #SexualDimorphism

🔗 doi.org/10.1098/rspb...
The release of sexual conflict after sex loss is associated with evolutionary changes in gene expression | Proceedings of the Royal Society B: Biological Sciences
Sexual conflict can arise because males and females, while sharing most of their genome, can have different phenotypic optima. Sexually dimorphic gene expression may help reduce conflict, but the expr...
doi.org
January 30, 2025 at 9:52 AM
anthropology.net
Men’s height and weight are highly sensitive to environmental improvements, intensifying sexual dimorphism over time. New research links growth to socio-economic trends and evolutionary forces. #HumanEvolution #SexualDimorphism #EvolutionaryBiology #HumanGrowth
Bigger, Taller, and More Formidable: The Evolutionary Tale of Male Growth
How global improvements in living conditions have fueled greater sexual dimorphism in human height and weight.
www.anthropology.net
January 22, 2025 at 2:24 PM
plosbiology.org
Wiring the sexes: @evolvwing.bsky.social &co use CRISPR knockouts & single-nucleus transcriptomics to decipher the regulatory logic of #SexualDimorphism in sulphur #butterflies, where males display bright UV colors thanks to specialized iridescent scales @plosbiology.org 🧪 plos.io/445Iz7d
Left: Scanning electron micrograph of two male-specific scale types found on the wings of male sulphur butterflies, with UV-iridescent scales (pink) and brown lanceolate scale from the marginal region. Image credit: Arnaud Martin / The George Washington University. Right: UV coloration, which is invisible to the human eye, is used as a male courtship signal in orange sulphur butterflies, shown here in magenta. Butterfly wings consist of two layers of microscopic scales, and in UV-iridescent butterflies, the upper layer harbors unique optical properties. These scales reflect ultraviolet thanks to complex layers of chitin on their surfaces, a nanostructure that resembles Christmas trees and is absent from non-UV scales. Image credit: Illustration by Julie Johnson/Life Science Studios (CC-BY license agreement provided to Arnaud Martin)
June 19, 2025 at 8:20 AM
epigenometech.bsky.social
Epigenetics Review - Sexual dimorphism in the liver u.epigenome.us/CBdaZvx3

anishajain.bsky.social and Satdarshan P. Monga (pittdeptofmed.bsky.social) in natrevgastrohep.nature.com

#Epigenetics #Reviews #Liver #SexualDimorphism
---

Empower your research at epigenometech.com
Sexual dimorphism in the liver - Nature Reviews Gastroenterology & Hepatology
In this Review, Jain and Monga describe the mechanisms of hepatic sexual dimorphism in homeostasis and physiological conditions, as well as in the pathophysiology of diseases such as metabolic dysfunc...
u.epigenome.us
August 25, 2026 at 8:06 PM
plosbiology.org
Wiring the sexes: @evolvwing.bsky.social &co use CRISPR knockouts & single-nucleus transcriptomics to decipher the regulatory logic of #SexualDimorphism in sulphur #butterflies, where males display bright UV colors thanks to specialized iridescent scales @plosbiology.org 🧪 plos.io/445Iz7d
Left: Scanning electron micrograph of two male-specific scale types found on the wings of male sulphur butterflies, with UV-iridescent scales (pink) and brown lanceolate scale from the marginal region. Image credit: Arnaud Martin / The George Washington University. Right: UV coloration, which is invisible to the human eye, is used as a male courtship signal in orange sulphur butterflies, shown here in magenta. Butterfly wings consist of two layers of microscopic scales, and in UV-iridescent butterflies, the upper layer harbors unique optical properties. These scales reflect ultraviolet thanks to complex layers of chitin on their surfaces, a nanostructure that resembles Christmas trees and is absent from non-UV scales. Image credit: Illustration by Julie Johnson/Life Science Studios (CC-BY license agreement provided to Arnaud Martin)
June 19, 2025 at 1:16 PM
borreroja.bsky.social
Really happy to see this work out in the world 💛
#SexualDimorphism #Metabarcoding #Pollination #ForagingBehaviour #Lepidoptera #SensoryEcology
Two wild H. himera butterflies before roosting
April 15, 2026 at 2:18 PM
mabbotti.bsky.social
El #dimorfismosexual en esta especie de falcónido es de los más evidentes.

Un saludo

#biodiversidad #biodiversity #ornitologia #ornithology #halconperegrino #peregrinefalcon #falcoperegrinus #falconidae #sexualdimorphism
February 2, 2025 at 9:32 AM
stemcellreports.bsky.social
The Francis Crick Institute isogenic hiPSC lines provide a resource for exploring sex chromosome effects on development and disease in vitro. #diseasemodeling #sexualdimorphism https://ow.ly/UoqG50Xea4W

ISSCR | The Gairdner Foundation | SickKids Foundation | Cell Press
October 21, 2025 at 6:01 PM
coleopsoc.bsky.social
#LiteratureNotice Zeballos et al. On Lucio pictum (Gorham, 1880) (Coleoptera: Lampyridae): redescription, updated range, and notes on sexual dimorphism doi.org/10.11606/180... #Beetle #Beetles #sexualdimorphism #Lampyridae
Figure 1. Lucio pictum (Gorham, 1880), male habitus. (A) dorsal; (B) ventral. Scale bar: 3 mm.
November 29, 2025 at 6:07 AM
sigtrans-sttt.bsky.social
This study explores how #SexualDimorphism in #COVID19, driven by hormonal regulation of immunity and viral dynamics, guides #DrugRepositioning and host-targeted #Immunotherapy approaches for #ViralPneumonia.
#STTT #OpenAccess: doi.org/10.1038/s413...
Sexual dimorphism of COVID-19 inspires drug repositioning and host-targeting immunotherapy for viral pneumonia
May 2, 2026 at 4:25 PM
chrismurphy201.bsky.social
An example of #SexualDimorphism in ‘tech’.

-I made the conscious choice to select different colours for the genders, as it’s practical for my use-case.
Two small bags of metal RF (“aerial”) connectors on a worktop surface. One set is gold, the other silver in colour. They otherwise appear identical. An opposing pair are connected together.
December 16, 2025 at 1:30 PM
jpecol.bsky.social
【💡High Cited 2020-2022 】
Sexual differences and #SexRatios of dioecious plants under stressful environments

Research points:
1️⃣ #SexualDimorphism
2️⃣ sex-specific responses
3️⃣ sex ratio biases

#Dioecy | #StressTolerance | #Competition | #SpatialSegregation

doi.org/10.1093/jpe/...
Determining factors of secondary sexual dimorphism in dioecious plants (adapted from Juvany and Munné-Bosch 2015). Sexually different tolerances to abiotic stress and biotic stress.
July 2, 2025 at 3:16 PM
newsmedical.bsky.social
Study uncovers sex differences in brain responses to low sexual desire 🧠🔬❤️ www.news-medical.net/news/2024051... #HDSS #SexualDesireDisorder #SexualDimorphism #Brain #Research #Neuroscience #MentalHealth #SexualHealth #FMRI #Psychometric @natureportfolio.bsky.social
Study uncovers sex differences in brain responses to low sexual desire
Study reveals that women with Hypoactive Sexual Desire Disorder (HDSS) show a "top-down" brain inhibition pattern, while men do not, suggesting significant sexual dimorphism in brain responses to sexu...
www.news-medical.net
May 16, 2024 at 4:55 AM
ldurgavich.bsky.social
Elephant is referred to as "he" in the story. In all species of elephants, males are bigger than females. #sexualdimorphism
Male African elephants weigh up to 15,400 lb, while their Asian counterparts weigh up to 11,000 lb.
an elephant is walking across a dirt road with a national geographic wild logo on the bottom
ALT: an elephant is walking across a dirt road with a national geographic wild logo on the bottom
media.tenor.com
December 18, 2024 at 9:12 PM
spetologia.bsky.social
doi.org/10.1007/s102...
#SPEetologia

#SexualSelection #Ornamentation #BirdBehavior #BehavioralEcology #EvolutionaryBiology #SexualDimorphism #AnimalBehavior #AvianBiology #ColorSignals #Evolution
Sex differences in bird ornamentation: female plasticity, ecological and physiological constraints - acta ethologica
Sexual dimorphism in bird ornamentation is well-documented, with male traits often emphasized in sexual selection studies, while female ornamentation remains understudied. Investigating European serins (Serinus serinus) and common waxbills (Estrilda astrild), I summarize experimental evidence revealing that sex differences in ornamentation arise from sex-specific ecological and physiological constraints, particularly affecting females. In European serins, female ornamentation does not function as a sexual or dominance signal, contrasting with males. In common waxbills, female bill colouration is highly plastic and sensitive to ecological conditions and oestradiol levels, leading to context-dependent sexual dichromatism that can be reduced or eliminated under favourable conditions. Together, these results challenge the view that sexual dichromatism is predominantly genetically fixed and male driven, highlighting female colouration plasticity as a key source of variation in ornamentation and social signalling. These findings underscore the need to integrate female colour variation for understanding the evolution of sexual and social signals.
doi.org
August 3, 2026 at 8:35 AM
spetologia.bsky.social
doi.org/10.1093/evol...
#SPEetologia

#EvolutionaryBiology #PlumageEvolution #BirdBehavior #SexualDimorphism #BehavioralEcology #Ornamentation #EstrildidFinches #ComparativeBiology #Evolution #AvianBiology
Evolution of sexually dimorphic plumage patterns in estrildid finches
Abstract. Pigmentation patterns aid in camouflage and may also serve for communication. To understand the evolution of different types of within-feather pi
doi.org
July 20, 2026 at 8:02 AM
itmat.bsky.social
Disentangling the role of #CircadianClocks in #Tanycytes with implications for sex-specific modulation of #BodyComposition and #Neurogenesis doi.org/10.1016/j.ce... @amitaseh @chronosleepinst #SexualDimorphism #Neuroscience #TranslationalScience
Redirecting
doi.org
July 15, 2026 at 1:02 PM
freegardener.bsky.social
Did you know a major body size jump in coincided with the rise of around 2 million years ago? New research reveals #humanEvolution #HomoErectus #Paleoanthropology #sexualdimorphism

https://freegardner.wordpress.com/2026/07/13/hominin-body-size-jump-linked-to-homo-erectus-emergence/
Hominin body size jump linked to Homo erectus emergence
Hominin body size jump linked to Homo erectus emergence
freegardner.wordpress.com
July 13, 2026 at 6:05 PM