Detailed Research Information

Detailed project information for
Study Plan Number 01117

Branch : Fish Health Branch

Study Plan Number : 01117

Study Title : Effect of Benthic Invertebrate Populations, Riparian Zone and Associated Water Quality on Infection Rates of Tubifex tubifex with Myxobolus cerebralis

Starting Date : 07/01/2005

Completion Date : 12/31/2007

Principal Investigator(s) : Blazer, Vicki S.

Primary PI : Blazer, Vicki S.

Telephone Number : (304) 724 4434

Email Address : vblazer@usgs.gov

SIS Number :

Primary Program Element :

Second Program Element :

Status : Active

Abstract : BACKGROUND
Results from our previous work indicate differences in T. tubifex populations in streams with different land use and riparian zones. However, it is recognized that climatic influences (rainfall/runoff, temperature) may have short-term (year to year) effects. Hence, it is important to repeat the analyses of oligochaete populations at the respective sites to determine if the tubifex populations (% of benthic invertebrates, lineages and infection rate) remain relatively constant or change from year to year.
OBJECTIVES
The primary goal of this study is to clarify how riparian zone and land use affect T. tubifex population density, lineage and myxosporidian parasite density and/or the ability of resident worms to become infected with M. cerebralis spores and to release infective spores. Preliminary results suggest that a deciduous riparian zone reduces the percent of T. tubifex within the oligochaete population, the percent of lineage III worms within this population and the percent of infected worms. However, it also appears other factors are important in regulating these parameters and need to be further studied.

The secondary objective is to understand the genetic basis for differences between and within T. tubifex lineages in terms of infectivity with M. cerebralis and production of infectious TAMs. This would help identify environmental factors that may be altered/managed by land use or riparian zone buffers that are responsible for these differences.
HYPHOTHESIS TO BE TESTED
Riparian zone and stream substrata will have no affect on Tubifex tubifex infection rate or production of Myxobolus cerebralis.

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11700 Leetown Road, Kearneysville, WV 25430, USA
URL: http://www.lsc.usgs.gov
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Last Modified: October 21, 2002 dwn
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Branch :	Fish Health Branch
Study Plan Number :	01117
Study Title :	Effect of Benthic Invertebrate Populations, Riparian Zone and Associated Water Quality on Infection Rates of Tubifex tubifex with Myxobolus cerebralis
Starting Date :	07/01/2005
Completion Date :	12/31/2007
Principal Investigator(s) :	Blazer, Vicki S.
Primary PI :	Blazer, Vicki S.
Telephone Number :	(304) 724 4434
Email Address :	vblazer@usgs.gov
SIS Number :
Primary Program Element :
Second Program Element :
Status :	Active
Abstract :	BACKGROUND Results from our previous work indicate differences in T. tubifex populations in streams with different land use and riparian zones. However, it is recognized that climatic influences (rainfall/runoff, temperature) may have short-term (year to year) effects. Hence, it is important to repeat the analyses of oligochaete populations at the respective sites to determine if the tubifex populations (% of benthic invertebrates, lineages and infection rate) remain relatively constant or change from year to year. OBJECTIVES The primary goal of this study is to clarify how riparian zone and land use affect T. tubifex population density, lineage and myxosporidian parasite density and/or the ability of resident worms to become infected with M. cerebralis spores and to release infective spores. Preliminary results suggest that a deciduous riparian zone reduces the percent of T. tubifex within the oligochaete population, the percent of lineage III worms within this population and the percent of infected worms. However, it also appears other factors are important in regulating these parameters and need to be further studied. The secondary objective is to understand the genetic basis for differences between and within T. tubifex lineages in terms of infectivity with M. cerebralis and production of infectious TAMs. This would help identify environmental factors that may be altered/managed by land use or riparian zone buffers that are responsible for these differences. HYPHOTHESIS TO BE TESTED Riparian zone and stream substrata will have no affect on Tubifex tubifex infection rate or production of Myxobolus cerebralis.
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U.S. Department of the Interior \|\| U.S. Geological Survey 11700 Leetown Road, Kearneysville, WV 25430, USA URL: http://www.lsc.usgs.gov Maintainer: lsc_webmaster@usgs.gov Last Modified: October 21, 2002 dwn Privacy Policy and Disclaimers \|\| FOIA \|\| Accessibility