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Higher temps may put monarch butterflies at risk

Higher temperatures may make monarch butterflies more vulnerable to parasites, according to new research. Monarch infections with the parasite Ophryocystis elektroscirrha have skyrocketed, more than...

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‘Supergene’ helps butterflies mimic wing patterns to stay safe

New research dissects how a single genetic switch helps butterflies mimic wing patterns of other species to protect themselves from predators. Many butterflies develop wing patterns that mimic other...

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Insecticide is the main driver of Midwest butterfly decline

Insecticide use is the single largest factor contributing to a decline in total butterfly abundance and species diversity in the Midwest United States, according to a new study. “What drives butterfly...

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Rare butterflies in Denmark are in steep decline

The distribution of rare butterflies in Eastern Denmark has plummeted by 72% in just 26 years, according to a new study. The findings indicate that current conservation efforts do not seem to be...

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Gene jump explains why some butterflies see color differently

In at least one species of butterfly, the variation in the vision of males and females results from a vision gene’s jump onto a sex chromosome. As butterflies flit among flowers, they don’t all view...

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These aphids make milkweed less appealing to monarchs

When oleander aphids infested tropical milkweed, monarch butterflies laid fewer eggs on the plants, and developing caterpillars were slower to mature, according to a new study. Tropical milkweed is a...

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Monarchs with more white spots are better at long trips

Monarch butterflies with more white spots are more successful at reaching their long-distance wintering destination, a new study suggests. Although it’s not yet clear how the spots aid the species’...

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Weird weather keeps butterflies aflutter longer

Unseasonably warm and cold days can prolong the active period of moths and butterflies by nearly a month, according to a new study. As Earth’s climate continues to warm due to the emission of...

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First butterflies winged off from North and Central America

Scientists have discovered where the first butterflies originated and which plants they relied on for food. About 100 million years ago, a group of trendsetting moths started flying during the day...

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City butterflies find refuge in botanical gardens

Despite their relatively small footprint in urban areas, botanical gardens are important hotspots for butterfly biodiversity in the arid Southwest, according to a new study. Using more than 10,500...

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Ruthless parasite plagues monarch butterflies

Monarch butterflies, one of the most iconic insects of North America, are increasingly plagued by a debilitating parasite, a new analysis shows. Researchers drew from 50 years of data on the infection...

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Butterfly eyespots reuse genetic code for legs, wings, and antennae

New research reveals that complex traits in butterflies, such as eyespots, evolve from gene networks already operating in the body to build antennae, legs, and even wings. Butterflies use eyespots, the...

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Butterflies inspire artificial colors for 3D printing

Researchers have created artificial colors by 3D printing certain nanostructures inspired by those of a butterfly. This principle can be used in the future to produce color screens. For their new...

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Cabbage butterflies evolved tastes to keep up with plant defenses

Cabbage butterflies started trying to take over the planet millions of years before humans ever set foot on it, researchers report. Their new study uses statistical methods to trace the path of ancient...

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1 western butterfly population has dropped 99.9% since the 1980s

Western butterfly populations are declining at an estimated rate of 1.6% per year, according to a new report. The report, published in Science, looks at more than 450 butterfly species, including the...

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Birds may avoid fast, flashy butterflies and their mimics

Birds can learn to recognize fast and flashy butterflies they’ve failed to catch in the past—as well as similar-looking species—research finds. The research provides some of the strongest evidence to...

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Texas cold snap could be really bad for monarchs

The recent frigid weather in Texas and Mexico will likely hit the monarch butterfly population especially hard, a new study shows. Figures show a dramatic 50% decline in their numbers over the last...

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Monarchs lay more eggs where milkweed isn’t alone

A new study suggests mixing milkweed with other flowering plants may help migrating monarch butterflies more than milkweed alone. As monarch butterflies make their transcontinental migration this month...

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How gross ‘chastity belts’ shape butterfly evolution

New research digs into the role sexual conflict between male and female plays in butterfly evolution. Some male butterflies go to extreme lengths to ensure their paternity—sealing their mate’s...

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Blame milkweed loss for steep monarch declines

A loss of milkweed, and not increased death during migration, is the most likely cause for a steep decline in the monarch butterfly population in the last few decades, evidence in a new study suggests....

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