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  E-mail Message: I thought you might be interested in this item at http://www.worldcat.org/oclc/112819149 Title: Female mimicry in garter snakes. Publisher: ISBN/ISSN: 0028-0836 OCLC:112819149

  
  

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Female mimicry in garter snakes.

Author:	RT Mason; D Crews
Edition/Format:	Article : English
Publication:	Nature, 1985 Jul 4-10; 316(6023): 59-60
Database:	From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
Summary:	In many diverse taxa, males of the same species often exhibit multiple mating strategies. One well-documented alternative male reproductive pattern is 'female mimicry', whereby males assume a female-like morphology or mimic female behaviour patterns. In some species males mimic both female morphology and behaviour. We report here female mimicry in a reptile, the red-sided garter snake (Thamnophis sirtalis parietalis). This form of mimicry is unique in that it is expressed as a physiological feminization. Courting male red-sided garter snakes detect a female-specific pheromone and normally avoid courting other males. However, a small proportion of males release a pheromone that attracts other males, as though they were females. In the field, mating aggregations of 5-17 males were observed formed around these individual attractive males, which we have termed 'she-males'. In competitive mating trails, she-males mated with females significantly more often than did normal males, demonstrating not only reproductive competence but also a possible selective advantage to males with this female-like pheromone.  Read more...
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