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Males help keep populations genetically healthy

A few males are enough to fertilize all the females. The number of males therefore has little bearing on a population s growth. However, they are important for purging bad mutations from the population. This is shown by a new Uppsala University study providing in-depth knowledge of the possible long-term genetic consequences of sexual selection. The results are published in the scientific journal Evolution Letters. ....

David Berger , Karl Grieshop , Uppsala University , Canada University Of Toronto , Uppsala University Department Of Ecology , Developmental Reproductive Biology , டேவிட் பெர்கர் , கனடா பல்கலைக்கழகம் ஆஃப் டொராண்டோ ,

Seabird eggs contaminated with cocktail of plastic additives

Chemical additives used in plastic production have been found in herring gull eggs, new research shows. ....

United Kingdom , Jon Blount , University Of Exeter Penryn Campus In Cornwall , Centre For Ecology , Professor Jon Blount , Penryn Campus , Marine Pollution Bulletin , Developmental Reproductive Biology , Ecology Environment , Nutrition Nutrients , Pollution Remediation , Zoology Veterinary Science , Marine Freshwater Biology , ஒன்றுபட்டது கிஂக்டம் , ஜான் புளூட் , பல்கலைக்கழகம் ஆஃப் எக்ஸெடர் பென்ரின் வளாகம் இல் கார்ன்வால் , மையம் க்கு சூழலியல் , பென்ரின் வளாகம் , கடல் பொல்யூஶந் புல்லட்டின் ,

A new mechanism behind continuous stem cell activity in plants

An inter-university research group has succeeded in constructing the gene expression network behind the vascular development process in plants. They achieved this by performing bioinformatics analysis using the VISUAL tissue culture platform, which generates vascular stem cells from leaf cells. In this network, they also discovered a new BES/BZR transcription factor, BEH3, and illuminated its role in vascular cell maintenance. ....

United States , Japan General , Tomoyuki Furuya , Shunji Shimadzu , Haruka Uchimura , Takuya Miyakawa , Furuya Tomoyuki , Kondo Yuki , Masato Saito , Shohei Nosaki , Hiroo Fukuda , Wataru Yamori , Masaru Tanokura , Makiko Satake , Kobe University Assistant Professor , Kobe University Graduate School Of Science , School Of Agricultural , Faculty Of Bioenvironmental Sciences , Kyushu University , Scientific Research On Innovative Areas Plant , University Of Tokyo Graduate School Agricultural , Research Methodology , University Of Tokyo Associate Professor , School Of Science , Kyushu University Professor , Kobe University ,

Discovery of ray sperms' unique swimming motion and demonstration with bio-inspired robot

It is generally agreed that sperms swim by beating or rotating their soft tails. However, a research team led by scientists from City University of Hong Kong (CityU) has discovered that ray sperms move by rotating both the tail and the head. The team further investigated the motion pattern and demonstrated it with a robot. Their study has expanded the knowledge on the microorganisms motion and provided inspiration for robot engineering design. ....

United States , Hong Kong , Shi Jiahai , Shen Yajing , Yang Xiong , Wang Panbing , National Science Foundation Of China , Tung Biomedical Sciences Center , Ocean Park Corporation Hong Kong , Research Grants Council Of Hong Kong , Hong Kong Health , Technology Innovation Fund , Professor Of The Department Biomedical Sciences , Cityu Department Of Biomedical Engineering , City University Of Hong Kong , High Energy Efficiency , Research Fund , City University , Associate Professor , Biomedical Engineering , Assistant Professor , Biomedical Sciences , National Academy , Dual Helixes , Energy Efficiency , Ocean Park Corporation Hong ,

How butterflies make transparent wings: MBL scientists see the invisible

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IMAGE: A glasswing butterfly feeding at flowers in Costa Rica. The remarkable transparency of these butterflies allows them to be invisible , and the antiglare coating of their wings helps to.
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Credit: Nipam Patel
WOODS HOLE, Mass. Many animals have evolved camouflage tactics for self-defense, but some butterflies and moths have taken it even further: They ve developed transparent wings, making them almost invisible to predators.
A team led by Marine Biological Laboratory (MBL) scientists studied the development of one such species, the glasswing butterfly, Greta oto, to see through the secrets of this natural stealth technology. Their work was published in the ....

United States , Woods Hole , Marine Biological Laboratory , Aaron Pomerantz , Mark Wolverton , Nipam Patel , University Of California , University Of Chicago , Integrative Biology , Cell Biology , Developmental Reproductive Biology , ஒன்றுபட்டது மாநிலங்களில் , வூட்ஸ் துளை , கடல் உயிரியல் ஆய்வகம் , ஆரோன் போமேரதண்தஜ் , குறி வால்வர்டன் , நிபாம் படேல் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , பல்கலைக்கழகம் ஆஃப் சிகாகோ , ஒருங்கிணைந்த உயிரியல் ,