Articles tagged with Monarchy
Researchers found that female monarchs with intermediate parasite loads were long-lived and laid many eggs, while those with light loads also thrived but had fewer infected offspring. The study provides evidence for the 'trade-off hypothesis' in a natural system.
Parasitized monarch populations are more susceptible to habitat loss and climate change, leading to a decline in migratory populations. The study's findings suggest that long-distance migration can amplify the effects of parasite infections on hosts.
A study predicts that monarch butterfly winter refuges in central Mexico will continue to decline due to increased storms and wet conditions. Human activities such as deforestation and logging further exacerbate the problem, threatening the survival of these iconic butterflies.
A study by American Association for the Advancement of Science (AAAS) found that monarchs use their internal circadian clock to navigate towards Mexico. The researchers manipulated daily light cycles on butterflies in a flight simulator, showing that disrupted clocks hinder navigation.
A team of archaeologists has confirmed the historicity of King Solomon's reign, citing evidence from excavations at Tel Rehov in Israel. The findings, published in Science magazine, provide a strong anchor for dating other sites with similar material culture to the time of the United Monarchy.
Researchers found that monarch larvae are more likely to be exposed to toxic corn pollen when pollen is shed during peak larval activity. In Ontario, 62% of larvae were exposed to toxic pollen, while in Iowa, the figure was 15%. The study suggests that agricultural habitats like cornfields are crucial for monarchs.