. The Canadian field-naturalist. 1993 Goodchild: Status of the Striped Shiner 447. Figure 1. Drawing of the Striped Shiner, Luxilus chrysocephalus, from Trautman (1981) Fishes of Ohio; by per- mission. The relative size and arrangement of the scales of the dorsal part of the body can be used to differenti- ate between Striped and Common shiners. Striped Shiner scales are large with dark outlines. Pigment in the dorsal scales usually form a distinct chevron- shaped pattern. Additionally, the dusky pigment on the chin and gular region is usually darker and more distinct on the Striped Shiner, al
. The Canadian field-naturalist. 1993 Goodchild: Status of the Striped Shiner 447. Figure 1. Drawing of the Striped Shiner, Luxilus chrysocephalus, from Trautman (1981) Fishes of Ohio; by per- mission. The relative size and arrangement of the scales of the dorsal part of the body can be used to differenti- ate between Striped and Common shiners. Striped Shiner scales are large with dark outlines. Pigment in the dorsal scales usually form a distinct chevron- shaped pattern. Additionally, the dusky pigment on the chin and gular region is usually darker and more distinct on the Striped Shiner, although this character is extremely variable especially in areas of sympatry (Trautman 1981). Adult Striped Shiners are bluish-green dorsally, with bluish-silvery sides and silvery or milk-white on the underside. Breeding males take on a bluish cast of the head and body, have pink sides and red outer mar- gins on the fms (Trautman 1981). In breeding males, tubercles are found on the top of the head, snout, lower jaw, scales of back and leading edge of dorsal fin (Becker 1983). Breeding females lack tubercles and are less brilliantly coloured (Trautman 1981). Distribution North America Luxilus chrysocephalus occurs in central North American freshwater drainages from the southern half of the Great Lakes basin, west of the Appalachian Mountains and south through the Mississippi River basin to the Mobile Bay drainage. Its overall distribu- tion (excluding related forms Luxilus cornutus and Luxilus isolepis) includes tributaries to Lakes Michigan, Huron, Erie and Ontario, south through Ohio, Mississippi and Tennessee river drainages, west into Red and Arkansas river drainages, and north through Missouri and Illinois drainages (Gilbert 1980; Smith-Vaniz 1968; Smith 1985). Luxilus chrysocephalus is sympatric with Luxilus cornutus throughout much of its range (Figures 2 and 3). Allopatry in Missouri and eastern Illinois, as well as in much of West Virginia, Ohio, and Indiana may be the
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