Churchman, Deborah
The milkweed limitation hypothesis predicts that spring monarch breeding populations before migration are in decline in the midwestern and northeastern United States and southern Canada. The alternative migration survival hypothesis proposes that the southward migratory population is suffering excessive mortality...
When they begin to travel north in spring,the females lay eggs. 当它们春季飞往北方时,雌性蝴蝶就会产卵。 They lay eggs on only one plant: milkweed. 它们只在一种植物——马利筋上产卵。 But in Mexico,people cut down the trees because they need more land for farms. 但是在墨西哥,人们砍了树...
A number of factors affect when wild birds lay their eggs. The date of laying and clutch size is related to the birds' fitness. Females that breed early in a season rely on abundant territory food and mates with stronger sexual signals. When food is scarce, laying intervals lengthen. Birds...
What is the coevolution of monarch butterflies and milkweed? Which is the smallest insect in the world? What is coelom in zoology? What is the purpose of the exoskeleton of an insect? What is a stick insect's habitat? What is the classification of invertebrates?
The swamp milkweed blooms with lovely pink flower bursts. But there are more than 100 types of milkweed to choose from for a garden that attracts the monarch and many other species of butterflies. #9: Lavender Lavender is a flower generally used in teas and fragrances. ©iStock.com/...
A simulation of the night sky on December 15 shows the evening constellations, plus the locations of three of the major planets, along with the Full Cold Moon rising in the east. (Stellarium/Scott Sutherland) Plus, as we transition from fall to winter wea...
Joe Pye Weed Eutrochium purpureum Larkspur Delphinium spp. Lupine Lupinus Marsh Marigold Caltha palustris Meadowsweet Filipendula ulmaria Milkweed Asclepias Milkweed Asclepias spp. Penstemon Penstemon spp. Perennial Sunflowers Helianthus Pincushion Flower Scabiosa Prairie Coneflower Ratibida Prairie Violet Viola...
The monarch caterpillar eats exclusively milkweed. Therefore, their diet makes them one of the few poisonous caterpillars. However, their dependence on the milkweed plant has made their population fall over the last few decades. 2. White-Marked Tussock Furry Horned Caterpillar ...
What do fish and amphibians have in common? What is the difference between a moth and a butterfly? What is the coevolution of monarch butterflies and milkweed? What fish live in the hadopelagic zone? What is the genus and species of a goldfish? Sharks and rays are examples of what kind...