Systematics, Distribution, and Evolution of the Chub Genus Nocomis (Cyprinidae) in the Southwestern Ohio River Basin, with the Description of a New Species

Abstract

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Systematics, distribution, and evolution of the Nocomis biguttatus species group (family Cyprinidae: Pisces) with a description of a new species from the Ozark upland

“…Studies over the past several years have revealed a new species of the Nocomis biguttatus species group in the Arkansas River drainage. The new species is related to N. effusus Lachner and Jenkins (1967) in body tuberculation, and to N. biguttatus (Kirtland) in its pharyngeal dentition. One problem of concern to us was the possibility of the existence of intergrading populations in adjacent drainages north of the Arkansas River drainage, such as the White River.…”

“…The Nocomis biguttatus species group was described and compared with the two other Nocomis species groups by Lachner and Jenkins (1967;1971). The objectives of this paper are to describe a new species of Nocomis and to compare the three species of the biguttatus group in respect to their systematics, distribution, ecology, and evolution.…”

Summary of biological investigations relating to surface-water quality in the Kentucky River basin, Kentucky

“…Thirty five fish species were collected during a 2-year sampling period, 37 including five darter species. Additional biological information for North Elkhorn Creek and its tributaries is reported by Lachner and Jenkins (1967), Jones (1968), Heer (1974), Westerman (1980, Elkin (1984), and Taylor (1984) South Elkhorn Creek…”

Genetic relationships between Marico barb (Barbus motebensis, Steindacher 1894), Redtail barb (B. gurneyi, Günther 1868) and Amatola barb (B. amatolicus, Skelton 1990)

“…Several systematic studies of the Cyprinidae have used tuberculation as a primary character to differentiate species-groups, species and subspecies (Lachner 1967;Gibbs 1957;Skelton 1988). Therefore, the presence of tubercles in B. gurneyi, B. motebensis and B. amatolicus clearly ~ Correspondence: J S Engelbrecht.…”