The Harvey Lake population of pearl dace (Margariscus margarita) is of especial interest because it is presumed to have descended from a relic population left behind by the last recession of the Pleistocene Lake Superior (Hubbs and Lagler 1949).
Of 10 microsatellite loci developed for the longnose dace, nine of them were reported to cross amplify loci for the pearl dace.
Bailey and Smith's (1981) claim of insufficient data to support Hubbs and Lagler's proposed morphological divergence of Harvey Lake pearl dace is not directly addressed by our findings.
We also encountered Plains Topminnow and Northern Pearl Dace in the Little White River basin during Current collections.
Northern Pearl Dace and Plains Topminnow occurred more frequently than other target species (Table 4).
Notes: species abbreviations are as follows: RED, northern redbelly dace (Phoxinus eos); FINE, finescale dace (Phoxinus neogaeus); FAT, fathead minnow (Pimephales promelas); BRASS, brassy minnow (Hybognathus hankinsoni); PEARL, pearl dace
(Semotilus margarita); GOLD, golden shiner Notemigonus crysoleucas); BLACK, blacknose shiner (Notropis heterolepis); BROOK, brook stickleback (Culaea inconstans); MUD, central mudminnow (Umbra limi); BURBOT, burbot (Lota lota); WHITE, white sucker (Catastomus commersoni); SMALL, smallmouth bass (Micropterus dolomieue); CRAP, black crappie (Pomoxis nigromaculatus); PERCH, yellow perch (Perca flavescens); IOWA, Iowa darter (Etheostoma exile); JOHN, Johnny darter (Etheostoma nirum).
The four species of minnows we encountered were: northern redbelly dace (Phoxinus eos) (NRBD), finescale dace (Phoxinus neogaeus) (FS), pearl dace (Margariscus margarita) (PD), and fathead minnows (Pimphalespromelas) (FH).
No significant allometric relationships were observed in pearl dace, In the larger sample of cyprinids combined, all allometric correlations were statistically significant (Table 2).