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Are female monarch butterflies declining in eastern North America? Evidence of a 30-year change in sex ratios at Mexican overwintering sites
Every autumn the entire eastern North American population of monarch butterflies (Danaus plexippus) undergoes a spectacular migration to overwintering sites in the mountains of central Mexico, where they form massive clusters and can number in the millions. Since their discovery, these sites have be...
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| Main Authors: | , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
The Royal Society
2010
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| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC2817264/ https://ncbi.nlm.nih.gov/pubmed/19776062 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1098/rsbl.2009.0632 |
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