Some characteristics of genetic variants of Tubifex tubifex (Müller, 1774) (Oligochaeta: Tubificidae) in laboratory cultures

Anlauf, Andreas

doi:10.1007/978-94-011-0842-3_1

Cited by 14 publications

(18 citation statements)

References 22 publications

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“…However, genetic characterization of morphologically indistinguishable T. tubifex has revealed significant genetic diversity (Anlauf, 1994;Anlauf and Neumann, 1997;Sturmbauer et al, 1999) and these genotypes have different susceptibilities to M. cerebralis (Beauchamp et al, 2002(Beauchamp et al, , 2005Kerans et al, 2004;Dubey and Caldwell, 2004;DuBey et al, 2005;Arsan et al, 2007b). Even before the seminal study of Beauchamp et al (2002) that introduced the concept of correlating mitochondrial lineages to M. cerebralis-infection, differences in actinospore production between geographically distinct T. tubifex populations had been noted .…”

Section: Introductionmentioning

confidence: 96%

Propagation of the myxozoan parasite Myxobolus cerebralis by different geographic and genetic populations of Tubifex tubifex: An Oregon perspective

Hallett

Lorz

Rasmussen

et al. 2009

Journal of Invertebrate Pathology

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Section: Introductionmentioning

confidence: 96%

Propagation of the myxozoan parasite Myxobolus cerebralis by different geographic and genetic populations of Tubifex tubifex: An Oregon perspective

Hallett

Lorz

Rasmussen

et al. 2009

Journal of Invertebrate Pathology

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“…Many species of salmonids can host the parasite, but the availability and abundance of habitat to support its obligate invertebrate host, T. tubifex, is a key factor influencing the prevalence and intensity of whirling disease (Hiner & Moffitt, 2002;Schisler & Bergersen, 2002;Krueger et al, 2006). Differential susceptibility to M. cerebralis has been observed among both obligate hosts and geographic and genetic variants of T. tubifex have been detected (Anlauf, 1994;Anlauf & Neumann, 1997;Kerans & Zale, 2002).…”

Section: Introductionmentioning

confidence: 97%

Models of stream habitat characteristics associated with tubificid populations in an intermountain watershed

Anlauf

2007

Hydrobiologia

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Habitat assessments were conducted in an intermountain watershed at three spatial extents to explore ways to predict the presence of tubificid oligochaetes likely to support the parasite Myxobolus cerebralis, cause of salmonid whirling disease. Stream reaches with six different reach slope characteristics were selected using GIS. The aquatic habitat in 60 reaches selected at random was measured and classified into distinct habitat units. Within the habitat units, areas of microhabitat with depositional fine sediments were chosen, measured, and core samples were removed to characterize the sediments and benthic oligochaetes. Two tubificids, Tubifex spp. and Limnodrilus hoffmeisteri, were abundant and co-occurred in silt-clay and fine sand sediments in these habitats. Models were posed and tested to predict the presence and relative abundance of tubificids using habitat characteristics from the three spatial extents: reach, habitat unit, and microhabitat. At the reach extent, tubificids were associated with low-reach slope and with slow water habitats. Within habitat units, tubificids were associated with higher percentages of fine sediments and higher stream width:depth ratios. In microhabitat cores, the presence of silt-clay sediments was positively associated with higher average stream width:depth ratios. Since ecological relationships are often scale dependent and stream systems have a natural hierarchy, predictive habitat models such as these that use measures from several scales may help researchers and managers more efficiently identify and quantify aquatic communities at highest risk of infection by the M. cerebralis parasite.

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“…Up to the present, there are only few examples where general protein patterns have been used for taxonomic purposes (see Brockmeyer, 1991;Carmona et al, 1989;Schmidt & Westheide, 1994), whereas isozyme patterns are currently employed in nearly all groups of organisms, including aquatic oligochaetes (Anlauf, 1994;Christensen, 1980;Christensen & Jelnes, 1976;Milbrink & Nyman, 1973;Terhivuo et al, 1994;Weider, 1992). This may be due to the fact that gener- Fig.…”

Section: Discussionmentioning

confidence: 99%

Species separation and identification in the Enchytraeidae (Oligochaeta, Annelida): combining morphology with general protein data

Schmelz

1996

Hydrobiologia

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In the Enchytraeidae, species separation and identification is often problematic due to high morphological similarity of closely related species and considerable intraspecific variability of crucial characteristics. Immature specimens are almost undeterminable. To meet these difficulties, this paper recommends the consulting of general protein patterns as exhibited by non-specific silver-staining after isoelectric focusing. A method is presented which allows the successful inclusion of protein data in taxonomic studies and field surveys. Two examples from an investigation on Fridericia field populations show that, with the help of general protein pattern analysis, a clear taxonomic decision on the identity of morphologically aberrant forms and of juvenile specimens as well can be achieved with comparatively little expenditure of time. A combined use of morphological and protein data for taxonomic purposes is suggested.

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Some characteristics of genetic variants of Tubifex tubifex (Müller, 1774) (Oligochaeta: Tubificidae) in laboratory cultures

Cited by 14 publications

References 22 publications

Propagation of the myxozoan parasite Myxobolus cerebralis by different geographic and genetic populations of Tubifex tubifex: An Oregon perspective

Propagation of the myxozoan parasite Myxobolus cerebralis by different geographic and genetic populations of Tubifex tubifex: An Oregon perspective

Models of stream habitat characteristics associated with tubificid populations in an intermountain watershed

Species separation and identification in the Enchytraeidae (Oligochaeta, Annelida): combining morphology with general protein data

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