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High infection can result in smaller wingspans and lower weights. Mating success decreases with higher parasite loads and, though females that mate and lay eggs have a shorter lifespan, they have no decrease in egg-laying. Spores are passed from female to caterpillar. Parasite levels vary between geographical populations ranging from 70% to 3%.
Females lay smaller eggs as they age. Larger females lay larger eggs. [30] The number of eggs laid by a female, which may mate several times, can reach 1,180. [33] Eggs take three to eight days to develop and hatch into larvae or caterpillars. [24]: 21 The offspring's consumption of milkweed benefits health and helps defend them against predators.
[55] [56] As a result of these factors, reproducing monarchs lay fewer eggs on A. tuberosa than they do on most other milkweeds. [55] [52] While the plant's colorful flowers provide nectar for many adult butterflies, A. tuberosa may therefore be less suitable for use in butterfly gardens and monarch waystations than are other milkweed species. [55]
As caterpillars, they live exclusively on milkweed. These butterflies migrate in the fall, This fascinating insect goes through an amazing life cycle consisting of four stages: egg, larvae, pupa ...
They are usually pale green or whitish in color, sometimes with a slightly metallic sheen, but not as vibrant as the adult butterfly's iridescent blue wings, and shaped like dew drops. The female laid around 12 eggs in cluster of 5 or 6 eggs on the undersides of the leaves. [8] The eggs are laid so that the caterpillars may feed as soon as they ...
Western monarch numbers are vastly improved over the winter of 2020-21, when researchers counted less than 2,000 of the iconic pollinators overwintering along the Central and Southern California ...
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Methona themisto, from the tribe Ithomiini. Danainae is a subfamily of the family Nymphalidae, the brush-footed butterflies.It includes the Daniadae, or milkweed butterflies, who lay their eggs on various milkweeds on which their larvae (caterpillars) feed, as well as the clearwing butterflies (), and the tellervini.