Results 111 to 120 of about 221,310 (303)

Sexual Selection in a Brentid Weevil [PDF]

Evolution, 1982
In most insects, differences between the sexes involve not only primary characters necessary for gamete production, copulation, and oviposition, but also sexual structures and behaviors involved in the acquisition of mates. The most striking of these secondary characters, such as exaggerated size, weaponry, or coloration, tend to occur in males, and ...
openaire   +2 more sources

Decreased cold‐sensing function of the transient receptor potential channel TRPM8 from tailed amphibians

FEBS Open Bio, EarlyView.
Despite frogs avoiding low temperatures, examination of four salamander species revealed that none avoided cold and all possessed cold tolerance. Functional analysis of TRPM8, a cold sensor, showed that all salamander TRPM8s had lost their cold sensitivity.
Tadahiro Sawao, Daiki Kobayashi, Shogo Hori, Osamu Saitoh   +3 more
wiley   +1 more source

Sexual selection and genotype-by-environment interactions in Drosophila cuticular hydrocarbons

, 2014
Cuticular hydrocarbons (CHCs) have important functions in insects, including waterproofing, species recognition, and signaling. They can act as pheromones and facilitate chemical mimicry, can be relatively simple or complex, and they have been the ...
David J. Hosken, Hunt, John E. (R18733), John Hunt, Ingleby, Fiona C., Hosken, David J., Fiona C. Ingleby   +5 more
core   +1 more source

Primate brain architecture and selection in relation to sex

BMC Biology, 2007
Background Social and competitive demands often differ between the sexes in mammals. These differing demands should be expected to produce variation in the relative sizes of various brain structures.
Nunn Charles L, Lindenfors Patrik, Barton Robert A   +2 more
doaj   +1 more source

Combined 5‐aminolevulinic acid and ferric ammonium citrate treatment promotes hair follicle growth by activating dermal papilla cells

FEBS Open Bio, EarlyView.
5‐Aminolevulinic acid combined with ferric ammonium citrate (5‐ALA/FAC) stimulates dermal papilla cell activity and promotes hair follicle growth. The treatment enhances ERK and AKT signaling, increases hair‐inductive gene expression, and restores dermal papilla function suppressed by dihydrotestosterone and oxidative stress, resulting in enhanced hair
Han‐Wook Ryu, Eok‐Soo Oh, Sewoon Kim
wiley   +1 more source

Sexual selection and trust games

, 2010
In economic games the facial attributes of counterparts bias decisions to trust and decisions to enter play. We report research supporting hypotheses that trust and reciprocation decisions in trust games are biased by mechanisms of sexual selection ...
Stirrat, Michael
core  

Long‐term hippocampal alterations and cognitive impairment in a murine model of surgical sepsis

FEBS Open Bio, EarlyView.
Using a mouse model of surgical sepsis, we tested long‐term memory and analyzed the transcriptome of single cells isolated from the hippocampus. Survivor mice showed worse memory, loss of certain brain cell subpopulations, and abnormal immune cell activity—suggesting that post‐sepsis brain alterations may be linked to cognitive deficits.
Dong Seong Cho, Rebecca Schmitt, Aneesha Dasgupta, Alexandra Ducharme, Jason Doles   +4 more
wiley   +1 more source

Sexual selection in the ant Leptothorax gredleri

, 2010
L. gredleri is an ant species that is mating by female calling. Virgin queens attract males with a droplet of a sexual pheromone in the vicinity of their maternal nest.
Oppelt, Angelika
core   +1 more source

Identifying gene expression signatures for risk stratification of postoperative adjuvant chemotherapy in colorectal cancer

FEBS Open Bio, EarlyView.
A novel signature integrating genome‐wide analysis with clinical factors predicts recurrence in stage II colorectal cancer and enables a new risk stratification to guide postoperative adjuvant chemotherapy. Clinical risk stratification for postoperative recurrence in patients with pathological stage II (pStage II) colorectal cancer (CRC) is essential ...
Mayuko Otomo, Keisuke Okuno, Shuichi Watanabe, Sakiko Oba, Hiroyasu Kagawa, Masanori Tokunaga, Daisuke Ban, Yusuke Kinugasa   +7 more
wiley   +1 more source

Rapid male plumage evolution drives sexual dichromatism in Ficedula flycatchers

Avian Research
Sexual dichromatism represents a major form of phenotypic differentiation between the sexes in birds, and its evolution is likely shaped by the interplay between sexual and natural selection.
Lijun Gao, Yueyao Wang, Zheng Li, Lu Dong   +3 more
doaj   +1 more source