Tucker, J.K.

10 items:

Unusual coloration in a red-eared slider, Trachemys scripta elegans Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service
The western sand darter (Ammocrypta clara) in Pool 26 of the Mississippi River in Missouri and Illinois Two new localities from Pool 26 of the Mississippi River are reported for the western sand darter (Ammocrypta clara) for Missouri and Illinois. One locality is at River Mile 219.4, Perry Island, St. Charles County, Missouri; the other is at River Mile 235.0 236.0, Hat Island, Calhoun County, Illinois. Specimens were collected at the first locality in one year (1992) out of five years (1989 1993) of sampling and at the second in two years (1989, 1992) out of five. The specimens of this species accounted for 0.4% of all fish collected in 1989, and 0.07% of all fish collected in 1992. All collecting sites had a sand substrate with significant current. Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service
Distribution of Strecker's chorus frogs (Pseudacris streckeri) in relation to their tolerance for freezing Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service
Initial occurrences of zebra mussels (Dreissena polymorpha) on freshwater mussels (Family Unionidae) in the Upper Mississippi River System. The exotic zebra mussel (Dreissena polymorpha) was found attached to native freshwater mussels (Unionidae) in La Grange, Peoria, and Alton Pools of the Illinois River and Pools 4, 13, and 26 of the Mississippi River. From 1% to 27% of native bivalves collected within these pools in 1992 had one or more zebra mussels attached, with the highest densities of zebra mussels found in the Illinois River. At one site in the Alton Pool of the Illinois River, 27% of native mussels had a mean of 2.2 zebra mussels attached. Densities were lower in the Mississippi River sites, ranging from 1% to 12%, with the highest density occurring below the confluence of the Illinois and Mississippi Rivers. Of the 25 native species collected,... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service
Pseudemys concinna (Eastern River Cooter). USA: Missouri Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service

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