Population Dynamics of Ornithodiplostomum ptychocheilus Metacercariae in Fathead Minnows (Pimephales promelas) from Four Northern-Alberta Lakes

Sandland, Gregory J.; Goater, Cameron P.; Danylchuk, Andy J.

doi:10.2307/3285129

Cited by 13 publications

(24 citation statements)

References 9 publications

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“…The main factors likely to affect temporal distribution of parasites include (1) seasonal variation in behavior and abundance of the definitive host (Dronen, 1978;Hoeve and Scott, 1988;Scott, 1988;Fernandez and Esch, 1991;Esch and Fernandez, 1994;Sapp and Esch, 1994;Sandland et al, 2001); (2) life history and distribution of the intermediate snail host (Dronen, 1978;Hoeve and Scott, 1988;Fernandez and Esch, 1991;Esch and Fernandez, 1994;Sapp and Esch, 1994;Gérard, 2001;Sandland et al, 2001;Kube, Kube and Bick, 2002); (3) seasonal changes in temperature (Dronen, 1978;Sandland et al, 2001;Kube, Kube and Bick, 2002;Poulin, 2006); and (4) density of and heterogeneity in host exposure to infective stages (Hoeve and Scott, 1988;Scott, 1988;Poulin, 2007).…”

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confidence: 99%

Seasonal Dynamics of Two Mortality-Related Trematodes Using an Introduced Snail

Herrmann

Sorensen

2009

Journal of Parasitology

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Seasonal dynamics of 2 trematode species, Cyathocotyle bushiensis and Sphaeridiotrema globulus, were assessed in relation to life history traits of the parasites and their hosts, as well as abundance of host species and abundance of infective stages. Both of these trematodes are associated with recurrent mortality of migrating waterbirds on the Upper Mississippi River National Wildlife and Fish Refuge. An invasive snail species, Bithynia tentaculata, serves as intermediate host for both trematode species. In total, 2,970 snails were collected at 2 study sites. Prevalence and mean abundance of the 2 trematode species varied among dates and was attributed to several factors, including migration patterns of definitive hosts, snail population dynamics, and seasonal changes in temperature. The surge of new infections of both parasites seems to be due to avian hosts foraging at this site during spring migration. The high prevalence and abundance of metacercariae among the snail population promote mortality among molluscivorous birds by increasing the probability of ingestion of a lethal dose. Additionally, mortality of non-molluscivorous birds can be explained by accidental ingestion of a couple of highly infected snails resulting in a lethal dose.

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confidence: 99%

Seasonal Dynamics of Two Mortality-Related Trematodes Using an Introduced Snail

Herrmann

Sorensen

2009

Journal of Parasitology

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“…Consequently, the data from different years were used as independent samples. In larval digeneans infecting fish hosts, snail density and visitation of bird definitive host often play important roles (Janovy et al 1997 ;Marcogliese et al 2001 ;Sandland et al 2001). As shown in previous studies, abiotic conditions such as water flow rate or temperature may affect the probability of fish host infection by cercariae (Stables & Chappell, 1986 ;Janovy et al 1997).…”

Section: Discussionmentioning

confidence: 92%

Posthodiplostomum cuticola(Digenea: Diplostomatidae) in intermediate fish hosts: factors contributing to the parasite infection and prey selection by the definitive bird host

et al. 2004

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Infection parameters of Posthodiplostomum cuticola, a digenean parasite with a complex life-cycle, were investigated in fish (the second intermediate host) from 6 floodplain water bodies over 2 years. A broad range of factors related to abiotic characteristics of localities, density of the first intermediate (planorbid snails) and definitive (wading birds) hosts and fish community structure were tested for their effects on P. cuticola infection in juvenile and adult fish. Characters of the littoral zone and flood duration were found to be important factors for the presence of the first intermediate and definitive hosts. Visitation time of definitive bird hosts was also related to adult fish host density. Localities with P. cuticola infected fish were visited by a higher number of bird species. Infection of P. cuticola in fish and similarities in infection among fish host assemblages were correlated with fish host density and fish species composition. Parasite infection in both adult and juvenile fishes was associated with the slope of the bank and the bottom type, in particular in juvenile fish assemblages with snail host density. We conclude that habitat characteristics, snail host density and fish community structure contribute significantly to P. cuticola infection in fish hosts.

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“…The parasite we are tracking is the trematode Ornithodiplostomum ptychocheilus (Op). This parasite uses the snail Physa gyrina as their first intermediate host, fathead minnows as their second intermediate host, and piscivorous birds as their final host (Sandland, Goater, & Danylchuk, ). In our first season using this system we demonstrated that laboratory‐reared (parasite‐free) fathead minnows acquired O. ptychocheilus metacercariae at a rate proportional to the duration of their exposure to lake water in this system ( F 1,31 = 5.51, p = .025; Figure ).…”

Section: Preliminary Results Using This Systemmentioning

confidence: 99%

Solar‐powered flow‐through system for aquatic field studies

2017

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Abstract1. Laboratory-based research provides great control over individual experimental replicates, but lacks the ecological realism of field work. Therefore, results from laboratory-based work may not reflect natural processes. Field-based studies have the advantage of ecological realism but often lack control over environmental variables and have low rates of within-experiment replication and as a result can have low statistical power to detect effects.2. Here, we present a method for creating a standardized system for experimental replicates in the field using solar-powered water pumps to run a modified zebrafish aquatic habitat system with recirculating water in situ. In our pilot study we used this apparatus to test the effects of naturally occurring parasites on the behaviour of individual fathead minnows, but this experimental set-up has potential for broad application to field-based research in aquatic ecology.3. We constructed a simple frame from conventional 2″ × 4″ lumber to support rows of 1-L tanks in the littoral zone of a small lake. Lake water is pumped to an overhead manifold made from a PVC pipe drilled with one hole over each tank. A short length of airline tubing directs the water flow into each individual tank. Water entering each tank passes through the manufacturer's grate at the rear of each tank and returns to the lake. We stocked one fish per tank, therefore the lack of water flow during the night did not cause duress or mortality.4. This system allowed control over individual test subjects while housing them in semi-natural conditions with a steady supply of lake water at a field site far removed from any source of electricity. K E Y W O R D Saquatic habitat, littoral zone ecology, solar-powered field apparatus

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Population Dynamics of Ornithodiplostomum ptychocheilus Metacercariae in Fathead Minnows (Pimephales promelas) from Four Northern-Alberta Lakes

Cited by 13 publications

References 9 publications

Seasonal Dynamics of Two Mortality-Related Trematodes Using an Introduced Snail

Seasonal Dynamics of Two Mortality-Related Trematodes Using an Introduced Snail

Posthodiplostomum cuticola(Digenea: Diplostomatidae) in intermediate fish hosts: factors contributing to the parasite infection and prey selection by the definitive bird host

Solar‐powered flow‐through system for aquatic field studies

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