Gastropod intermediate hosts of the meningeal worm <i>Parelaphostrongylus tenuis</i> in Pennsylvania: observations on their ecology

Maze, R; Johnstone, Cluny

doi:10.1139/z86-029

Cited by 17 publications

(7 citation statements)

References 3 publications

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“…Some authors suggest that L3 emergence may be a result of unnaturally high intensities in laboratory infections (Kralka and Samuel, 1984). Gastropods naturally infected with protostrongylids typically have low intensities of infection, but occasionally higher intensities do occur (for example, 75 and 97 larvae of P. tenuis in individual D. laeve; Lankester and Anderson, 1968;Maze and Johnstone, 1986). Data are not available for the intensity of natural infections of IH with U. pallikuukensis; however, in the present study, L3 emerged over a wide range of intensities of infection and there was no evidence that the different intensities affected the cumulative proportion or rate of emergence (Figs.…”

Section: Discussionmentioning

confidence: 99%

Emergence of Third-Stage Larvae of Umingmakstrongylus pallikuukensis from Three Gastropod Intermediate Host Species

Kutz¹,

Hoberg²,

Polley³

2000

The Journal of Parasitology

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We investigated the emergence of third-stage larvae (L3) of Umingmakstrongylus pallikuukensis from the slugs Deroceras laeve, Deroceras reticulatum, and the snail Catinella sp. in the laboratory and from D. laeve on the tundra. Thirdstage larvae emerged from 8 of 8 D. laeve and 8 of 8 D. reticulatum housed at 20 C in darkness and from 9 of 10 D. laeve and 5 of 5 Catinella sp. housed at 21 C with 10-12 hr of light/day. Larvae emerged from D. laeve and D. reticulatum over a wide range of infection intensities (2-179 and 20-65, respectively), and the patterns of emergence were independent of intensity. The majority of the L3 emerged from most of the Deroceras spp. by 58 or 60 days postinfection (PI). Lower rates of emergence were observed from Catinella sp. Larvae emerged from D. laeve on the tundra by 10 wk PI and were recovered from the vegetation in some experimental enclosures the following year. Third-stage larvae survived in tap and distilled water at 0-4 C for 13 mo. Emergence of L3 of U. pallikuukensis from the intermediate host may increase the temporal and spatial availability of L3 and enhance their survival and transmission.

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Section: Discussionmentioning

confidence: 99%

Emergence of Third-Stage Larvae of Umingmakstrongylus pallikuukensis from Three Gastropod Intermediate Host Species

Kutz¹,

Hoberg²,

Polley³

2000

The Journal of Parasitology

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“…This parasitic nematode inhabits the central nervous system of its primary host the white-tailed deer (Odocoileus virginianus), usually without adverse impact (Anderson, 1972;Maze and Johnstone, 1986). Although rarely affected by the parasite, most white-tailed deer become infected by the time they are 1.5 yr of age (Slomke et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Meningeal Worm in a Reintroduced Elk Population in Kentucky

Larkin

Alexy

Bolin

et al. 2003

Journal of Wildlife Diseases

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Meningeal worm (Parelaphostrongylus tenuis) has been implicated in the failure of several elk (Cervus elaphus) restoration attempts in the eastern United States. However, limited post-release monitoring and a paucity of published literature prevents a clear understanding of this parasite's role in past failures. During winters of 1997-2001, the Kentucky Department of Fish and Wildlife Resources translocated 1,044 elk from western states to eastern Kentucky (USA) in an effort to restore a free-ranging population. We monitored 521 radio-collared elk over 4 yr to determine the impact meningeal worm had on population establishment. Thirty (23%) of 129 non-capture related mortalities were attributed to meningeal worm. Twenty-two (73%) of these meningeal worm-caused mortalities were animals Ͻ3 yr old. If younger elk born in Kentucky suffer higher mortality rates than older translocated elk, the population growth observed during the initial years of restoration may be temporary. Additional research is necessary to determine the influence meningeal worm will have on elk population growth in Kentucky.

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“…Parasitism is known to play an important role in the ecology and evolution of natural freshwater snail populations, for example in the evolution of sexual reproduction and life-history (Jokela & Lively 1995;Lively 1996;Dillon 2000), host resistance (Webster & Woolhouse 1999) and host-parasite co-evolution (Dybdahl & Lively 1998). In terrestrial gastropods, the interaction between parasitic nematodes and their intermediate host has received considerable attention (e.g., Maze & Johnstone 1986;Cabaret & Morand 1990;Morand & Faliex 1994). However, the effects of parasitic mites on the individual fitness of terrestrial gastropods and the dynamics of their populations are poorly understood.…”

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confidence: 99%

Interpopulation variation in the prevalence and intensity of parasitic mite infection in the land snailArianta arbustorum

Baur

2005

Invertebrate Biology

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Abstract. The parasitic mite Riccardoella limacum sucks blood in the lung of its host, the land snail Arianta arbustorum. The infection of various host populations was examined in Switzerland. In a lowland snail population, prevalence of infection did not vary among seasons. However, intensity of mite infection in dissected individuals of A. arbustorum was high in autumn, but low in winter and spring when ≤100 mite eggs were found attached to the lung epithelium. A novel, non‐invasive parasite screening method was used to estimate the number of mites on living host snails. An analysis of repeatability revealed that 92.9% of the snails were correctly classified as infected or non‐infected with this non‐invasive method. Prevalence of mite infection was examined in 997 adults of A. arbustorum from 11 natural populations distributed over an altitudinal gradient ranging 335–2360 m. No infected snails were found in 7 populations, while in the remaining 4 populations the prevalence of mite infection ranged 45.8–77.8%. Intensity of infection also differed among the 4 host populations. No geographic pattern in prevalence of infection was found. However, parasitic mites did not occur in snail populations situated at elevations of 1290 m or higher. A possible explanation for this finding could be that the host's hibernation period may be too long at high elevations for mites and their eggs to survive. At low elevations, other factors may affect the presence of R. limacum in the lung of A. arbustorum.

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Gastropod intermediate hosts of the meningeal worm Parelaphostrongylus tenuis in Pennsylvania: observations on their ecology

Cited by 17 publications

References 3 publications

Emergence of Third-Stage Larvae of Umingmakstrongylus pallikuukensis from Three Gastropod Intermediate Host Species

Emergence of Third-Stage Larvae of Umingmakstrongylus pallikuukensis from Three Gastropod Intermediate Host Species

Meningeal Worm in a Reintroduced Elk Population in Kentucky

Interpopulation variation in the prevalence and intensity of parasitic mite infection in the land snailArianta arbustorum

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