Are female monarch butterflies declining in eastern North America? Evidence of a 30-year change in sex ratios at Mexican overwintering sites

Biology Letters

Volumn 6, Issue 1, 2010, Pages 45-47

  Davis, Andrew K ^a   Rendón Salinas, Eduardo ^b  

^a UNIVERSITY OF GEORGIA   (United States)

^b World Wildlife Fund Mexico   (Mexico)

Author keywords

Danaus plexippus; Monarch butterflies; Overwintering; Sex ratios

Indexed keywords

AUTUMN; BREEDING SITE; BUTTERFLY; OVERWINTERING; PARASITE; POPULATION DISTRIBUTION; PROTOZOAN; SEX RATIO;

NORTH AMERICA;

DANAUS PLEXIPPUS; OPHRIOCYSTIS ELEKTROSCIRRHA; PROTOZOA;

EID: 77449155923     PISSN: 17449561     EISSN: 1744957X     Source Type: Journal    
DOI: 10.1098/rsbl.2009.0632     Document Type: Article

References (18)

1. Alonso-Mejia, A. & Arellano-Guillermo, A. 1992 Influence of temperature, surface body moisture and height aboveground on survival of monarch butterflies overwintering in Mexico. Biotropica 24, 415-419. (doi:10.2307/2388612)
2. Alonso-Mejia, A., Montesinos-Patino, E., Rendon-Salinas, E., Brower, L. P. & Oyama, K. 1998 Influence of forest canopy closure on rates of bird predation on overwintering monarch butterflies Danaus plexippus L. Biol. Conserv. 85, 151-159. (doi:10.1016/S0006-3207(97)00134-1)
3. Anderson, J. B. & Brower, L. P. 1993 Cold-hardiness in the annual cycle of the monarch butterfly. In Biology and conservation of the monarch butterfly (eds S. B. Malcolm & M. P. Zalucki), pp. 155-164. Los Angeles, CA: Natural History Museum of Los Angeles County.
4. Anderson, J. B. & Brower, L. P. 1996 Freeze-protection of overwintering monarch butterflies in Mexico: critical role of the forest as a blanket and an umbrella. Ecol. Entomol. 21, 107-116. (doi:10.1111/j.1365-2311.1996.tb01177.x)
5. Beall, G. 1948 The fat content of a butterfly, Danaus plexippus, as affected by migration. Ecology 29, 80-94. (doi:10.2307/1930346)
6. Borland, J., Johnson, C. C., Crumpton III, T. W., Thomas, M., Altizer, S. & Oberhauser, K. 2004 Characteristics of fall migratory monarch butterflies, Danaus plexippus, in Minnesota and Texas. In The monarch butterfly, biology and conservation (eds K. Oberhauser & M. Solensky), pp. 97-104. Ithaca, NY: Cornell University Press.
7. Brindza, L., Brower, L. P., Davis, A. K. & Van Hook, T. 2008 Comparative success of monarch butterfly migration to overwintering sites in Mexico from inland and coastal sites in Virginia. J. Lepidopterists Soc. 62, 189-200.
8. Brower, L. P. & Calvert, W. H. 1985 Foraging dynamics of bird predators on overwintering monarch butterflies in Mexico. Evolution 39, 852-868. (doi:10.2307/2408685)
9. Brower, L. P. & Malcolm, S. B. 1991 Animal migrations: endangered phenomena. Am. Zool. 31, 265-276.
10. Brower, L. P., Castilleja, G., Peralta, A., Lopez-Garcia, J., Bojorquez-Tapia, L., Diaz, S., Melgarejo, D. & Missrie, M. 2002 Quantitative changes in forest quality in a principal overwintering area of the monarch butterfly in Mexico, 1971-1999. Conserv. Biol. 16, 346-359. (doi:10.1046/j.1523-1739.2002.00572.x)
11. Brower, L. P., Fink, L. S. & Walford, P. 2006 Fueling the fall migration of the monarch butterfly. Integr. Compar. Biol. 46, 1123-1142. (doi:10.1093/icb/icl029)
12. Brown, J. J. & Chippendale, G. M. 1974 Migration of the monarch butterfly, Danaus plexippus: energy sources. J. Insect Physiol. 20, 1117-1130. (doi:10.1016/0022-1910(74)90218-2)
13. de Roode, J. C., Gold, L. R. & Altizer, S. 2007 Virulence determinants in a natural butterfly-parasite system. Parasitology 134, 657-668. (doi:10.1017/S0031182006002009)
14. de Roode, J. C., Pedersen, A. B., Hunter, M. D. & Altizer, S. 2008 Host plant species affects virulence in monarch butterfly parasites. J. Anim. Ecol. 77, 120-126. (doi:10.1111/j.1365-2656.2007.01305.x)
15. Frey, D. & Leong, K. L. H. 1993 Can microhabitat selection or differences in 'catchability' explain male-biased sex ratios in overwintering populations of monarch butterflies? Anim. Behav. 45, 1025-1027. (doi:10.1006/anbe.1993.1120)
16. Herman,W. S. 1988 Body weight and wing length changes in Minnesota populations of the monarch butterfly. J. Lepidopterists Soc. 42, 32-36.
17. Urquhart, F. A. 1976 Found at last: the monarch's winter home. Natl Geogr. 150, 161-173.
18. Van Hook, T. 1993 Non-random mating in monarch butterflies overwintering in Mexico. In Biology and conservation of the monarch butterfly (eds S. B. Malcolm & M. P. Zalucki), pp. 49-60. Los Angeles, CA: Natural History Museum of Los Angeles County.