Correction

COMMENTARY. For the article “Mating patterns and rates of biological invasion,” by Ingrid M. Parker, which appeared in issue 38, September 21, 2004, of Proc. Natl. Acad. Sci. USA (101, 13695-13696; first published September 14, 2004; 10.1073/pnas.0405787101), the author notes that the acknowledgement in the legend of Fig. 1 was incorrect. The legend should have read, “Photograph courtesy of Janie C. Civille, University of California, Davis.”