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Donax striatus Linné, 1767, is synonymous with D. flexuosus Gould, 1853; D. lamarckii Deshayes in Reeve, 1854; and D. mediamericana Pilsbry, 1919. Synonymy of the species is largely due to the wide diversity in shell characters and the absence
of clear diagnostic features on which to define the species. It is suggested that variation in the size, color, shape, and sculpture of shells may be due to ecological factors such as nature of the beach, availability of food, and density of populations. D. striatus is sympatric with
D. denticulatus Linné throughout its range, but occurs more sporadically and usually in lesser numbers. Ecological, zoogeographical, and morphological evidence is put forward to show that D. striatus is the more recent and less established of the two species, and it is
suggested that this may be the reason for its greater overall diversity.
The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.