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The monarch butterfly in Mexico: a conservation model
Current Opinion in Insect Science, 2023Each fall, millions of monarch butterflies (Danaus plexippus L.) travel from Canada and the United States to overwinter in Mexico and California. In 2022, the IUCN listed migratory monarchs as endangered because of their population decline. The main accepted drivers are widespread use of herbicides, effects of climate, and land use change that causes ...
Eduardo Rendón-Salinas +4 more
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Palatability dynamics of cardenolides in the monarch butterfly
Nature, 1974THE adaptive strategy of sequestering cardiac glycosides from milkweed plants (Asclepiadaceae and Apocynaceae) has evolved in several taxa of insects1. Since these cardenolides elicit vomiting following ingestion, birds learn to avoid the insects on sight after one or more emetic experiences2.
L P, Brower, C M, Moffitt
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Effect of mating on Monarch butterfly oogenesis
Experientia, 1977Oogenesis ceases in virgin Monarch butterflies at about 10 days posteclosion, but an enhanced production of mature oocytes occurs after mating. Juvenile hormone injections into virgins, and allatectomies of mated females, indicate that the observed fluctuations in oogenesis are due to periods of corpora allata activity and inactivity.
W S, Herman, J F, Barker
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The case of the monarch butterfly: a verdict is returned
Trends in Genetics, 2002A publication reporting the harmful effects on the monarch butterfly of maize genetically modified to express insecticidal delta-endotoxins from the soil bacterium Bacillus thuringiensis (Bt) caused much public interest. A series of ecologically based studies were subsequently carried out to evaluate rigorously the impact of pollen from such crops and ...
Gatehouse AM, Ferry N, Raemaekers RJM
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Inbreeding depression in monarch butterflies
Journal of Insect Conservation, 2016Monarch butterflies and their unique system of multigenerational migration have long fascinated the public, and concerns for the fate of this charismatic insect have grown due to the consistent declines in overwintering colony size over the last 20 years.
Andrew J. Mongue +3 more
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The monarch butterfly's sperm wars
New Scientist, 2009The male butterfly's penis seems to work like an oil dipstick to judge how much enemy sperm the female has in ...
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Opposing global change drivers counterbalance trends in breeding North American monarch butterflies
Global Change Biology, 2022Andrew K Davis +2 more
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