منابع مشابه
Animal Behaviour: Monarchs Catch a Cold
The spectacular migration of the Monarch from northeastern America to its overwintering grounds in Mexico requires the butterfly to set its time-compensated compass south in the autumn, then north in the spring for its return home. The stimulus responsible for compass resetting has been identified as a reduction in temperature.
متن کاملMilkweed Matters: Monarch Butterfly (Lepidoptera: Nymphalidae) Survival and Development on Nine Midwestern Milkweed Species
The population of monarch butterflies east of the Rocky Mountains has experienced a significant decline over the past 20 yr. In order to increase monarch numbers in the breeding range, habitat restoration that includes planting milkweed plants is essential. Milkweeds in the genus Asclepias and Cynanchum are the only host plants for larval monarch butterflies in North America, but larval perform...
متن کاملDensity estimates of monarch butterflies overwintering in central Mexico
Given the rapid population decline and recent petition for listing of the monarch butterfly (Danaus plexippus L.) under the Endangered Species Act, an accurate estimate of the Eastern, migratory population size is needed. Because of difficulty in counting individual monarchs, the number of hectares occupied by monarchs in the overwintering area is commonly used as a proxy for population size, w...
متن کاملIn Monarchs, Cry2 Is King of the Clock
January 2008 | Volume 6 | Issue 1 | e12 Internal clocks govern the daily rhythms of the most basic functions of waking, eating, and sleeping. The molecular basis of such pacemakers is best understood in fruit flies, where the interactions of a small set of molecules drive the insects’ behaviors just as they do our own. The precise inner workings of each species’ clock differ, however, as do the...
متن کاملEcological niches in sequential generations of eastern North American monarch butterflies (Lepidoptera: Danaidae): the ecology of migration and likely climate change implications.
Eastern North American monarch butterflies (Danaus plexippus L.) show a series of range shifts during their breeding season. Using ecological niche modeling, we studied the environmental context of these shifts by identifying the ecological conditions that monarchs use in successive summer months. Monarchs use a consistent ecological regimen through the summer, but these conditions contrast str...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 2008
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay6031