The Aquatic Oligochaeta of the St. Lawrence Great Lakes Region

Spencer, Douglas R.

doi:10.1007/978-1-4613-3048-6_8

Cited by 15 publications

(19 citation statements)

References 31 publications

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“…However, unlike the western United States, where T. tubifex is found in both polluted and relatively pristine environments, proximity to organic pollution sources appears to be a requirement for the occurrence of detectable T. tubifex populations in Pennsylvania. The detection of overlapping populations of I. templetoni and T. tubifex only below sources of organic enrichment in Pennsylvania suggests that the two species may substitute for one another along a pollution gradient (Milbrink 1980;Spencer 1980). Although our study was not specifically designed to evaluate the seasonal patterns of maturity among tubificids, our results indicate that sampling for mature Tubificidae in Pennsylvania should be undertaken during the late fall through spring.…”

Section: Oligochaete Assemblagesmentioning

confidence: 93%

Patterns of Distribution and Abundance of Tubifex tubifex and Other Aquatic Oligochaetes in Myxobolus cerebralis Enzootic Areas in Pennsylvania

Kaeser

Sharpe

2006

J Aqua Anim Hlth

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Recent outbreaks of whirling disease (caused by the myxosporean parasite Myxobolus cerebralis) among wild rainbow trout Oncorhynchus mykiss have called attention to deficiencies in the knowledge of aquatic oligochaete ecology in rivers and streams of North America. Revealing the patterns of distribution and abundance of Tubifex tubifex, an obligate host in the life cycle of M. cerebralis, is critical to understanding local and regional differences in the epizootiology of this disease. To gather fundamental information on the ecology of T. tubifex among streams in Pennsylvania, we surveyed oligochaetes and the features of their habitat. We used indirect and direct ordination techniques to search for patterns in oligochaete assemblages and their relationships to the environment. In general, higher‐gradient streams with coarse substrate contained low‐density oligochaete assemblages dominated by the family Enchytraeidae. Lower‐gradient streams with fine‐sediment habitat were dominated by Limnodrilus hoffmeisteri and contained either Ilyodrilus templetoni or T. tubifex. A key finding to emerge from this survey was that high oligochaete density, T. tubifex occurrence, and T. tubifex density were associated with proximity to obvious sources of organic enrichment. Limits on the distribution of T. tubifex in Pennsylvania relative to distributions in M. cerebralis–affected systems in the Intermountain West may be a factor in explaining why whirling disease has not been observed to cause population declines among wild rainbow trout in this region and should be further investigated.

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Section: Oligochaete Assemblagesmentioning

confidence: 93%

Patterns of Distribution and Abundance of Tubifex tubifex and Other Aquatic Oligochaetes in Myxobolus cerebralis Enzootic Areas in Pennsylvania

Kaeser

Sharpe

2006

J Aqua Anim Hlth

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“…Lumbriculus variegatus is an ecologically relevant oligochaete, occurring throughout Europe and the United States (Spencer, 1980). It is an epibenthic/benthic organism subject to contaminant exposure via all routes of concern, including ingestion of sediment particles (Phipps et al, 1993).…”

Section: Test Designsmentioning

confidence: 99%

Toxicological availability of nickel to the benthic oligochaete Lumbriculus variegatus

Vandegehuchte

Roman

Nguyen

et al. 2007

Environment International

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It is generally accepted that the bioavailability of metals in sediments is influenced by the presence of acid volatile sulfides (AVS). The pore water hypothesis predicts that, if the molar concentration of simultaneously extracted metals (SEM) in a sediment is smaller than the molar concentration of AVS, the free metal ion activity in the pore water is very small and that consequently no metal toxicity in short-term toxicity tests is observed. In this study we examined (1) if this concept can be extended to predict the absence of chronic Ni toxicity to the oligochaete deposit-feeding worm Lumbriculus variegatus and (2) It has been demonstrated that the simultaneously extracted metals -acid volatile sulfide (SEM-AVS) method is an effective tool in predicting the absence of metal toxicity in sediments in short-term toxicity tests when [SEM-AVS] < 0 (Di Toro et al., 1990;Di Toro et al., 1992;Casas and Crecelius, 1994;Pesch et al., 1995;Hansen et al., 1996).The underlying principle is that except for pyrite, all other iron and manganese mono sulfides that may be present in sediments have higher solubility products than other metal sulfides. Thus, Fe and Mn can be displaced by other divalent metals (Cu, Cd, Ni, Pb, Zn) on a mole-to-mole basis. Because these metal sulfides exhibit very low solubility, sediments with an excess of reactive sulfide will exhibit very low dissolved metal concentrations in pore waters and will not cause toxicity .Sediments with excess SEM do not always exhibit toxicity to invertebrate sediment organisms. Organic matter can bind non-sulfide bound trace metals, thus preventing them to enter the dissolved phase . Based on this, [SEM-AVS]/f OC has been proposed as a measure of bioavailable metal (Di Toro et al., 2005;. In a recently proposed biotic ligand model for sediments, it has been shown that [SEM-AVS]/f OC determines the free metal activity in the pore water (Di Toro et al., 2005). If this value is greater than a critical threshold, sediments are predicted to be toxic.The [SEM-AVS]/f OC concept assumes that there is no metal toxicity caused by transformations of the sulfide and organic matter bound metal in the gut of sedimentingesting organisms or via exposure to contaminated food (Meyer et al., 2005 (Lee B.G., Griscom S.B. et al., 2000). However, they also note that generic relationships between metal bioaccumulation and toxicity are not well understood. Animal species differ in their abilities to detoxify bioaccumulated metals (e.g. via metallothionein or granule induction) or develop tolerance (Adams et al., 2000;. An increase in bioaccumulation may be a sign of active metal uptake and not toxicity in the case of metal deficiency (Muyssen and Janssen, 2002;Bossuyt and Janssen, 2003). Thus, bioaccumulated metals may not always reflect toxic effects (McGeer et al., 2003).To our knowledge, the applicability of the SEM-AVS concept to predict the absence of chronic, sub-lethal toxicity of nickel to a benthic organism exposed in single-species laboratory toxicity tests has not been demon...

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“…Several scientists have described new taxa from Turkey, yet we believe additional taxa, including as yet undescribed species, have yet to be discovered in the country, which certainly could include one or more cosmopolitan species. According to the distribution charts prepared by Timm (Timm 1980) Aulodrilus pluriseta (Piguet) were also considered to be cosmopolitan species by Spencer (Spencer 1980). All of these species had previously been recorded from different areas in Turkey.…”

Section: Checklist Of Turkish Faunamentioning

confidence: 99%

<p class="HeadingRunIn"><strong>The aquatic oligochaete fauna of Lake Çıldır, Ardahan-Kars, Turkey, including an updated checklist of freshwater annelids known to occur in the country</strong></p>

Arslan

Mercan

2020

Zoosymposia

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In this paper, we present the results of the first survey for aquatic oligochaetes in Lake Çıldır, northeastern Turkey, during which 22 oligochaete species were recorded from the lake. The results of this survey were integrated into an updated and annotated list of oligochaetes and other aquatic annelids occurring in the country, summarized from historical and recent publications. Currently, the freshwater annelid fauna of Turkey includes 150 species of oligochaetes (1 Crassiclitellata, 21 Enchytraeidae, 1 Propappidae, 1 Haplotaxidae, 4 Lumbriculidae, 56 Naidinae, 64 Tubificinae, 2 Lumbricidae), 1 species of Branchiobdellida, and 6 species of Aphanoneura (1 Potamodrilidae and 5 Aeolosomatidae). Although studies focusing on the aquatic oligochaete fauna of Turkey have increased over the past 15–20 years, species diversity still remains unclear.

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The Aquatic Oligochaeta of the St. Lawrence Great Lakes Region

Cited by 15 publications

References 31 publications

Patterns of Distribution and Abundance of Tubifex tubifex and Other Aquatic Oligochaetes in Myxobolus cerebralis Enzootic Areas in Pennsylvania

Patterns of Distribution and Abundance of Tubifex tubifex and Other Aquatic Oligochaetes in Myxobolus cerebralis Enzootic Areas in Pennsylvania

Toxicological availability of nickel to the benthic oligochaete Lumbriculus variegatus

<p class="HeadingRunIn"><strong>The aquatic oligochaete fauna of Lake Çıldır, Ardahan-Kars, Turkey, including an updated checklist of freshwater annelids known to occur in the country</strong></p>

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