31. He discovered a curious parasite in the stickleback , to which the name Glugea microspora has been given. 32. Preliminary genetic analyses indicated that changes in the expression of this gene were responsible for pelvic reduction in sticklebacks . 33. "Stickleback " completed outfitting on 26 May and held her shakedown cruise off the California coast. 34. An unusual feature of sticklebacks is that they have no scales, although some species have bony armour plates. 35. Distribution of Gasterosteus aculeatus ( Three-spine stickleback ) in the United States, from USGS NAS web site 36. These subspecies actually represent three examples from the enormous range of morphological variation present within three-spined sticklebacks . 37. In Nova Scotia, a form of three-spined stickleback departs from the usual pattern of parental care. 38. For instance, stickleback fish treat a pear-shape as a sex bomb ( a supernormal stimulus ). 39. The Santa Clara River supports these species as well as the federally listed endangered, unarmored three spine stickleback . 40. I think it's the Stickleback fish that will mistake a red bottomed toy for a receptive female.