DIE-OFF, FISH - USA (04): (MINNESOTA) COLUMNARIS
************************************************
A ProMED-mail post
<http://www.promedmail.org>
ProMED-mail is a program of the
International Society for Infectious Diseases <http://www.isid.org>
Date: Sat 16 Jun 2012
Source: sctimes.com [edited]
<http://tinyurl.com/77gdemf>
Anglers, recreational boaters and property owners have been reporting a fair number of crappies, sunfish and rock bass floating throughout Big Birch Lake in Todd County over the past week [9 - 15 Jun 2012].
The fish likely died as a result of columnaris disease, which is quite common on many lakes during the spring as panfish spawn in shallow water. As the water warms quickly and the fish are already stressed due to spawning, some of them succumb to the bacterial disease.
It's usually a small percentage of the fish population that's affected and the disease is recognizable by discoloration on the body or scales, or eroded gills.
Columnaris is one of many diseases that fish in Minnesota lakes have been known to acquire. Most are unsightly, but they rarely result in widespread mortality.
In a recent interview, Ling Shen, pathology lab supervisor with the Department of Natural Resources, offered some insight to those odd-looking growths, warts and lesions one might encounter on the fish they catch.
[Byline: Glen Schmitt]
---
Communicated by:
ProMED-mail from HealthMap Alerts
<promed@promedmail.org>
[Pictures of crappies (_Pomoxys_ spp.), sunfish (_Lepomis_ spp.) and rock bass (_Ambloplites rupestris_) can be accessed at <http://upload.wikimedia.org/wikipedia/commons/4/4e/Pomoxis_nigromaculatus1.jpg>,
<http://upload.wikimedia.org/wikipedia/commons/1/1b/Lepomis_gibbosus2.jpg?uselang=es>,
<http://upload.wikimedia.org/wikipedia/en/4/48/Goggle-eye.JPG>,
respectively. Columnaris disease is caused by _Flavobacterium columnare_, a Gram-negative bacterium. It affects freshwater fish worldwide. Stress and pollutants in water can affect the severity of _F. columnare_ infections in fish>.
A map of the affected area can be accessed at:
<http://healthmap.org/r/2D1T> - Mod.PMB]
[see also:
Die-off, fish - USA (03): (GA) drought 20120611.1164494 Die-off, fish - USA (02): (GA) comment 20120601.1153265 Die-off, fish - USA: (GA) pollution susp. 20120531.1152141
2011
----
Undiagnosed die-off, fish - USA (02): (GA) columnaris 20110528.1641 2010
-----
Undiagnosed fish die-off - USA (04): (WV, OH, PA) columnaris
20100610.1946
2008
----
Columnaris disease, fish - USA 20091111.3908
1999
----
Columnaris, white bass - USA (Kansas) 19990713.1178] .................................................sb/pmb/ejp/dk/ll
*##########################################################*
************************************************************
ProMED-mail makes every effort to verify the reports that are posted, but the accuracy and completeness of the
information, and of any statements or opinions based
thereon, are not guaranteed. The reader assumes all risks in
using information posted or archived by ProMED-mail. ISID
and its associated service providers shall not be held responsible for errors or omissions or held liable for any damages incurred as a result of use or reliance upon posted or archived material.
0 comments:
Post a Comment