Life cycle of Lymnaea peregra (Gastropoda: Pulmonata) in the Leicester canal, U.K., with an estimate of annual production

Gaten, E.

doi:10.1007/bf00006457

Cited by 20 publications

(10 citation statements)

References 11 publications

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“…About a quarter of the lake surface dries over the summer and the shore is muddy, shallow and vegetated; both snail forms are present here. Lymnaeu peregra reproduce in early spring at the Seealpsee, as elsewhere (Bronmark, Rundle & Erlandsson, 1991;Gaten, 1986), and have a univoltine life cycle.…”

Section: The Sampling Sitementioning

confidence: 54%

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Shell variation in sympatric freshwater Lymnaea peregra and L. ovata (Gastropoda: Lymnaeidae)

Ward

Goater

Mikos

1997

Biological Journal of the Linnean Society

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Snails of the genus Lymnaea are morphologically variable and their taxonomy is unclear. In particular, the forms peregra and ovata, distinguished by shell shape, are often considered variants of the same species, L. peregra. We studied a rare situation in a Swiss mountain lake where both forms are sympatric. First, we found that the forms shows complete separation for a number of allozymes. Second, we examined the response of the two snail forms to infection by the trematode Diplostomum phoxini. For the ovata form, there was a transitory, 10% increase in the growth of infected snails compared to uninfected controls. The peregra form showed no gigantism and had higher parasite‐induced mortality. Third, we assessed differences between the forms in reproduction under different environmental conditions. Density negatively influenced egg production to the same degree in both forms. However, decreasing water levels, characteristic of part of the lake studied, led to a 30% decrease in egg production for the ovata form, but only a 10% decrease for the peregra form. These differences are discussed in relation to the microdistributions of the snails in the lake and we conclude that the two forms are almost certainly separate species.

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Section: The Sampling Sitementioning

confidence: 54%

“…Lymnaeu peregra reproduce in early spring at the Seealpsee, as elsewhere (Bronmark, Rundle & Erlandsson, 1991;Gaten, 1986), and have a univoltine life cycle.…”

Section: The Sampling Sitementioning

confidence: 92%

Shell variation in sympatric freshwater Lymnaea peregra and L. ovata (Gastropoda: Lymnaeidae)

Ward

Goater

Mikos

1997

Biological Journal of the Linnean Society

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“…has a wide range of environmental tolerance, with a pH tolerance range from 5.8 to 9.9, and prefers calm, shallow water environments, such as lakes, ponds and slow‐flowing rivers (Økland ). Its life span is about 1 year (Young ; Glöer ); shell growth occurs mainly during summer and is slow in winter (Gaten ); and protozoa, weeds, cyanobacteria, chlorophyta and diatoms constitute its primary diet (Knecht & Walter ; Gittenberger et al . ).…”

mentioning

confidence: 99%

δ¹⁸O and δ¹³C in fossil shells of Radix sp. from the sediment succession of a dammed palaeo‐lake in the Yarlung Tsangpo valley, Tibet, China

Feng

Chen

2017

Boreas

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2017 (July): d 18 O and d 13 C in fossil shells of Radix sp. from the sediment succession of a dammed palaeoA series of confirmed and suspected dammed palaeo-lake sedimentary successions is scattered within the middle Yarlung Tsangpo valley in Tibet. However, the chronology, the genesis of the dam and its location, the water level of the dammed lake, the process of dam failure and the spatiotemporal relationships between the sedimentary successions remain controversial. Here, we focus on one sedimentary succession of the suspected dammed palaeolake at Xigazê. We measured the grain-size distribution, magnetic susceptibility, organic and inorganic carbon content, and d 13 C org and d 15 N total ratios of the sediments. In addition, we measured the d 18 O shell and d 13 C shell values of modern and fossil Radix sp. shells, and the d 18 O water and d 13 C DIC values of the ambient water with different hydrological regimes. The results indicate that the d 18 O shell values of modern Radix sp. and the d 18 O water of the ambient water body significantly depend on its hydrological status. In addition, a strong positive relationship was observed between d 18 O shell values of modern Radix sp. shells and the d 18 O water of the ambient water on the Tibetan Plateau. According to this correlation, the d 18 O water values of the palaeo-water body are reconstructed using the d 18 O shell values of Radix sp. fossil shells in the Xigazê section. Further, based on the d 18 O shell values of fossil Radix sp., the reconstructed d 18 O water of the palaeo-water body and the specific habitats of Radix sp., we infer that the sedimentary succession in the Xigazê broad valley was mainly formed within the backwater terminal zone of a dammed palaeo-lake and that the elevation of the water level of the lake was approximately 3811 m a.s.l. AMS 14 C dating indicates that the deposits of the dammed palaeo-lake were formed at about 33-22 cal. ka BP. Finally, the presence of Radix sp. fossil shells within the Xigazê section suggests that Radix sp. survived the late Last Glacial Period on the Tibetan Plateau.

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“…Young (1975) considered that both cercarial and metacercarial infections in molluscs from the Worcester-Birmingham Canal are important factors in structuring the host community by influencing reproduction (cercarial infections) and mortality (metacercarial infections). Gaten (1986) demonstrated how high cercarial prevalences significantly reduced the density of mature, fertile Lymnaea peregra in the Leicester Canal. He found that no eggs were produced by collected infected snails and calculated, in a single month, that a mature snail population of 18.91 snail per m )2 with a 37.7% cercarial prevalence only contained a breeding population of 11.78 snails per m )2 .…”

Section: Discussionmentioning

confidence: 98%

“…The extensive British canal system is an excellent ecosystem for freshwater trematodes with a wide diversity of species (Young, 1973(Young, , 1974Diaz Diaz, 1976) and high prevalences of both cercarial and metacercarial infections (Young, 1973(Young, , 1975Gaten, 1986) in the molluscan populations. The present study shows that the sampled stretch of the Basingstoke Canal in Surrey in 1970 also contained a comparable diverse and prevalent trematode fauna, and therefore, by association, also contained a diverse guild of aquatic organisms acting as hosts.…”

Section: Discussionmentioning

confidence: 99%

Anthropogenic Pressure on a Molluscan–Trematode Community over a Long-term Period in the Basingstoke Canal, UK, and Its Implications for Ecosystem Health

Morley

Lewis

2006

EcoHealth

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A long-term study of a molluscan-trematode community in the Basingstoke Canal, UK, was undertaken over the period 1970-2003 which coincided with a significant restoration program involving substantial anthropogenic changes to the canal's ecosystem. The aim of this study was to correlate these changes with alterations in the molluscan-trematode community, focusing on fluctuations in the prevalence and species richness of the trematode population as a good indicator, in terms of biodiversity, of ecosystem health. Molluscs were sampled at four time periods (1970, 1982, 1983, 2003) and examined for trematode parasites. The molluscan population over the sampling period demonstrated a limited stability with few species being present during all time periods. During 1982 and 1983, when restoration of the sampling site was being undertaken, Lymnaea stagnalis dominated the molluscan fauna, possibly because it was best able to take advantage of the disturbed conditions, while other species such as Bithynia tentaculata were absent. In the trematode population, the prevalence and diversity of both cercarial and metacercarial infections was high in 1970 prior to the period of restoration work. However, during 1982 and 1983, the trematode community was significantly reduced with cercarial prevalence declining to less than 1%. By 2003, more than 12 years after restoration had been completed, the trematode population had shown only a modest recovery. Trematodes use a wide range of different host species for completing their life-cycles and may be used as bioindicators of ecosystem diversity and health. An interpretation of the structure of the molluscan-trematode community over the sampling period suggests that the restoration project had an initial negative effect on ecosystem health, in terms of biodiversity, but this has subsequently only shown modest signs of recovery suggesting continuing problems in ecological functioning and stability.

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Life cycle of Lymnaea peregra (Gastropoda: Pulmonata) in the Leicester canal, U.K., with an estimate of annual production

Cited by 20 publications

References 11 publications

Shell variation in sympatric freshwater Lymnaea peregra and L. ovata (Gastropoda: Lymnaeidae)

Shell variation in sympatric freshwater Lymnaea peregra and L. ovata (Gastropoda: Lymnaeidae)

δ¹⁸O and δ¹³C in fossil shells of Radix sp. from the sediment succession of a dammed palaeo‐lake in the Yarlung Tsangpo valley, Tibet, China

Anthropogenic Pressure on a Molluscan–Trematode Community over a Long-term Period in the Basingstoke Canal, UK, and Its Implications for Ecosystem Health

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Life cycle of Lymnaea peregra (Gastropoda: Pulmonata) in the Leicester canal, U.K., with an estimate of annual production

Cited by 20 publications

References 11 publications

Shell variation in sympatric freshwater Lymnaea peregra and L. ovata (Gastropoda: Lymnaeidae)

Shell variation in sympatric freshwater Lymnaea peregra and L. ovata (Gastropoda: Lymnaeidae)

δ18O and δ13C in fossil shells of Radix sp. from the sediment succession of a dammed palaeo‐lake in the Yarlung Tsangpo valley, Tibet, China

Anthropogenic Pressure on a Molluscan–Trematode Community over a Long-term Period in the Basingstoke Canal, UK, and Its Implications for Ecosystem Health

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δ¹⁸O and δ¹³C in fossil shells of Radix sp. from the sediment succession of a dammed palaeo‐lake in the Yarlung Tsangpo valley, Tibet, China