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The effects of temperature on the distribution and establishment of Echinoparyphium recurvatum metacercariae in Lymnaea peregra.
J Helminthol. 2007 Sep; 81(3):311-5.JH

Abstract

The establishment and distribution of Echinoparyphium recurvatum metacercariae in the second intermediate host, Lymnaea peregra, were investigated at a temperature range of 5-29 degrees C. Preliminary studies on the survival and infectivity of E. recurvatum cercariae showed that both parameters were temperature dependent. No cercarial transmission occurred at 5 or 10 degrees C. Nevertheless, the transmission efficiency (1/H0) indicated that transmission was temperature independent in the temperature range 17-25 degrees C and was much lower than in previous studies using this host-parasite system. These differences were attributed to low cercarial densities used in this study. The effect of temperature on encystment site choice (mantle cavity, kidney, pericardium) by metacercariae showed that the mantle cavity was the prime site of encystment, followed by the pericardium and the kidney. Temperatures at the lower and upper ranges (14 and 29 degrees C), however, caused a significant reduction in encystment in the mantle cavity but not in the pericardium or kidney. The importance of cercarial densities, the physiological mechanisms influencing metacercarial distribution and their implications for parasite transmission to the definitive host are discussed.

Authors+Show Affiliations

School of Biological Sciences, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK. n.morley@rhul.ac.ukNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17711598

Citation

Morley, N J., et al. "The Effects of Temperature On the Distribution and Establishment of Echinoparyphium Recurvatum Metacercariae in Lymnaea Peregra." Journal of Helminthology, vol. 81, no. 3, 2007, pp. 311-5.
Morley NJ, Adam ME, Lewis JW. The effects of temperature on the distribution and establishment of Echinoparyphium recurvatum metacercariae in Lymnaea peregra. J Helminthol. 2007;81(3):311-5.
Morley, N. J., Adam, M. E., & Lewis, J. W. (2007). The effects of temperature on the distribution and establishment of Echinoparyphium recurvatum metacercariae in Lymnaea peregra. Journal of Helminthology, 81(3), 311-5.
Morley NJ, Adam ME, Lewis JW. The Effects of Temperature On the Distribution and Establishment of Echinoparyphium Recurvatum Metacercariae in Lymnaea Peregra. J Helminthol. 2007;81(3):311-5. PubMed PMID: 17711598.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The effects of temperature on the distribution and establishment of Echinoparyphium recurvatum metacercariae in Lymnaea peregra. AU - Morley,N J, AU - Adam,M E, AU - Lewis,J W, Y1 - 2007/08/22/ PY - 2007/8/23/pubmed PY - 2008/3/15/medline PY - 2007/8/23/entrez SP - 311 EP - 5 JF - Journal of helminthology JO - J Helminthol VL - 81 IS - 3 N2 - The establishment and distribution of Echinoparyphium recurvatum metacercariae in the second intermediate host, Lymnaea peregra, were investigated at a temperature range of 5-29 degrees C. Preliminary studies on the survival and infectivity of E. recurvatum cercariae showed that both parameters were temperature dependent. No cercarial transmission occurred at 5 or 10 degrees C. Nevertheless, the transmission efficiency (1/H0) indicated that transmission was temperature independent in the temperature range 17-25 degrees C and was much lower than in previous studies using this host-parasite system. These differences were attributed to low cercarial densities used in this study. The effect of temperature on encystment site choice (mantle cavity, kidney, pericardium) by metacercariae showed that the mantle cavity was the prime site of encystment, followed by the pericardium and the kidney. Temperatures at the lower and upper ranges (14 and 29 degrees C), however, caused a significant reduction in encystment in the mantle cavity but not in the pericardium or kidney. The importance of cercarial densities, the physiological mechanisms influencing metacercarial distribution and their implications for parasite transmission to the definitive host are discussed. SN - 0022-149X UR - https://www.unboundmedicine.com/medline/citation/17711598/The_effects_of_temperature_on_the_distribution_and_establishment_of_Echinoparyphium_recurvatum_metacercariae_in_Lymnaea_peregra_ L2 - https://www.cambridge.org/core/product/identifier/S0022149X07818530/type/journal_article DB - PRIME DP - Unbound Medicine ER -