[acn-l] Freswater Drum Die-Off
Mark Binkley (mbinkley at earthling.net)
Thu, 17 Jun 1999 14:29:19 -0400
>From: "Jerry Schulte" <jschulte at orsanco.org>
>To: <afs-l at wyoming.com>
>Subject: Freswater Drum Die-Off
>Date: Thu, 17 Jun 1999 09:49:38 -0400
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>A very localized, <10 mi, fish kill of predominately Freshwater Drum has
>been occurring on the Ohio River for the past 10 days. Two to three
>thousand indiduals have been counted. All sizes. Ninety-five per cent of
>the kill is Freshwater Drum...a few other species, Sauger, Walleye, Catfish,
>Hybrid Striped Bass have been observed. Zebra mussels occurr in the river
>at this location. A 17 year hatch of cicadas is also occurring in this
>area. Native unionids are not showing stress. No visible damage apparent
>on external examination. No molluscicides have been reported in use since
>October, '98. Initial results of bacterial analysis negative. Fish
>observed swimming disoriented in shallow water, < 1m. When spooked, fish
>swim to deeper water, then return to shallow, shoreline areas. Some
>individuals can be collected by hand. Any ideas, thoughts, suggestions?
>
>Jerry Schulte
>ORSANCO
>
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