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An intergeneric hybrid of a native minnow, the golden shiner, and an exotic minnow, the rudd

Transactions of the American Fisheries Society

By:
and
DOI: 10.1577/1548-8659(1991)120<0781:AIHOAN>2.3.CO;2

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Abstract

The hybrid golden shiner Notemigonus crysoleucas × rudd Scardinius erythrophthalmus is the first known nonsalmonid, intergeneric hybrid of an exotic species and a North American native species. The cross is also the first valid record of a viable hybrid involving the native golden shiner. Meristic and mensural characters of 30 artificially produced hybrids of male golden shiners and female rudds were analyzed. Forty-seven percent of the meristic traits exhibited character states intermediate between those of parents. Twenty-seven percent of the meristic characters were supernumerary, suggesting developmental instability of the hybrid genome. Mensural hybrid characters were significantly skewed to the golden shiner phenotype. The skewed mensural inheritance and other skewed patterns of morphological inheritance also suggest problems in canalization of the hybrid phenome or atypical patterns of dominance. All hybrids were identifiable by intermediate squamation of the cultrate abdomen: the keel was mostly scaled but exhibited a small fleshy ridge posteriorly. This minnow hybrid allows general inferences to be made about the phylogenetic affinity of the golden shiner to other cultrate cyprinids of Eurasia. The hybrid cross has important management and conservation implications for fishes in North America. The hybrid is an example of how an exotic species may negatively affect a native species.

Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
An intergeneric hybrid of a native minnow, the golden shiner, and an exotic minnow, the rudd
Series title:
Transactions of the American Fisheries Society
DOI:
10.1577/1548-8659(1991)120<0781:AIHOAN>2.3.CO;2
Volume:
120
Year Published:
1991
Language:
English
Publisher:
Taylor and Francis
Contributing office(s):
Florida Integrated Science Center
Description:
15 p.
First page:
781
Last page:
795
Online Only (Y/N):
N
Additional Online Files (Y/N):
N