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- Lourdais, Olivier; Brischoux, François; Shine, Richard; Bonnet, Xavier
- Biological journal of the Linnean Society 2005 v.84 no.4 pp. 767-774
- Epicrates; cannibalism; eggs; energy; females; foraging; ingestion; mothers; odors; ova; parturition; pregnancy; progeny; snakes
- ... In many animal species, mothers that produce stillborn offspring or undeveloped ova immediately ingest them. This cannibalism has been interpreted in two ways: (1) as a form of parental care (to prevent disease spreading to healthy littermates, and eliminate predator-attracting scent cues); or (2) to recycle otherwise wasted energy, thus facilitating maternal recovery. Our experimental study on ca ...
- Nylin, Sören; Nygren, Georg H.; Windig, Jack J.; Janz, Niklas; Bergström, Anders
- Biological journal of the Linnean Society 2005 v.84 no.4 pp. 755-765
- Polygonia; Salix caprea; Urtica dioica; butterflies; cages; females; flight; gene flow; genetic variance; genetic variation; heritability; host plants; interspecific variation; major genes; pedigree; phytophagous insects; population structure; probability analysis; sex linkage
- ... In the Lepidoptera, sex-linked genes have been found to be of importance for species differences in, for example, host-plant preference, and have been implicated in ecological speciation. Variation within species is typically not sex-linked. However, in the comma butterfly Polygonia c-album (Nymphalidae) an X-linked gene has been found to play a major role in determining differences in host-plant ...