. The Canadian field-naturalist. Natural history. 2001 Holm, Dumont, Leclerc, Roy, and Grossman: Status of Bridle Shiner 615. Figure 1. Bridle Shiner, Notropis hifrenatiis, female, 53 mm TL, ROM 21671. Fall Creek, Thompkins County, New York State. Drawn by Anker Odum, from Scott and Grossman (1973), by permission. tive of Notropis bifrenatus is the Blackchin Shiner, Notropis heterodon. Although one study (Mayden 1989) referred N. bifrenatus to Hybopsis, this classification is subject to change and we follow Robins et al. (1991) until the interrelationships between the species of Notropis and H
. The Canadian field-naturalist. Natural history. 2001 Holm, Dumont, Leclerc, Roy, and Grossman: Status of Bridle Shiner 615. Figure 1. Bridle Shiner, Notropis hifrenatiis, female, 53 mm TL, ROM 21671. Fall Creek, Thompkins County, New York State. Drawn by Anker Odum, from Scott and Grossman (1973), by permission. tive of Notropis bifrenatus is the Blackchin Shiner, Notropis heterodon. Although one study (Mayden 1989) referred N. bifrenatus to Hybopsis, this classification is subject to change and we follow Robins et al. (1991) until the interrelationships between the species of Notropis and Hybopsis are better known. Coburn and Cavender (1992) retain Notropis for N. bifrenatus. Distribution The Bridle Shiner is restricted to eastern North America in the Atlantic drainage from western Lake Ontario east to Maine and south to South Carolina (Gilbert 1980; Jenkins and Burkhead 1994). (See inset, Figure 2) In Canada, it is restricted to the eastern part of what is known as the Mixedwood Plains ecozone (Wiken 1986; Grossman and Holm 1997). It is found from the Bay of Quinte, Lake Ontario, east and north to Lac St-Paul, near Trois-Rivieres, Quebec and south to Lac Memphremagog (Figure 2) but not south in Vermont (see inset. Figure 2). It is found in lowland areas and does not occur far inland from the St. Lawrence River or Riviere Richelieu. Because the species is difficult to identify, some specimens in the collections of the ROM and the Canadian Museum of Nature (GMN) were re- exam- ined. Two lots in the ROM collection were question- able but their identity as Notropis bifrenatus could not be ruled out completely and they have been included as valid records: (1) The only record from the Napanee River has poor locality data but may be west of the Bay of Quinte. The single specimen (ROM 24732) captured by the Department of Planning and Development in 1950, lacks a prominent lateral band and has 8 anal rays which is uncommon for Notropis bifrenatus. Notropis volucellus and
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