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Top Stories for January 11
CRISPR-Cas9 gene-edited fetal goat fibroblasts. Image Credit: Jon M. Oatley.
Transplantation of sperm-producing stem cells
CRISPR-Cas9 gene editing can improve the effectiveness of spermatogonial stem cell transplantation in mice and livestock, a study finds.
Research article published in PNAS
“Donor-derived spermatogenesis following stem cell transplantation in sterile NANOS2 knockout males,” by Michela Ciccarelli, Mariana I. Giassetti, Deqiang Miao et al.
Image credit: David T. R. Wilson.
Origins of funnel web spider toxins
A highly lethal class of funnel web spider toxins likely developed as predator defense, and the toxin’s human lethality was an evolutionary coincidence, a study suggests.
The Economist
Smithsonian Magazine
Research article published in PNAS
“Australian funnel-web spiders evolved human-lethal δ-hexatoxins for defense against vertebrate predators,” by Volker Herzig, Kartik Sunagar, David T. R. Wilson, Sandy S. Pineda et al.
Predicting the spread of Asian giant hornet
A study examines the ecological niche and potential invasive spread of the Asian giant hornet, Vespa mandarinia, in North America.
Research article published in PNAS
“Assessing the ecological niche and invasion potential of the Asian giant hornet,” by Gengping Zhu, Javier Gutierrez Illan, Chris Looney, and David W. Crowder.
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QnAs with Juan Carrillo
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Adélie penguins at Adélie Cove, Terra Nova Bay
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Parsing penguins’ evolutionary success
Changing environmental conditions and genetic adaptations may explain how penguins radiated and expanded their geographic ranges to encompass diverse environments.
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US racial inequality: A pandemic-scale problem
In the United States, mortality rates and life expectancy were worse for Blacks during nonpandemic years than for Whites during the COVID-19 pandemic, a study finds.
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Ancestry of New Guinea singing dogs
Genetic insights could help shore up populations of a rare dog species thought to be nearly extinct in the wild.
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