Consequence of temperature changes on cercarial shedding from Galba truncatula infected with Fasciola hepatica or Paramphistomum daubneyi
Experimental infections of Galba truncatula (two populations) with Fasciola hepatica or Paramphistomum daubneyi were carried out to study the effect of water temperature changes (3 h at a mean of 12 °C every week) on cercarial shedding during the patent period. The results were compared with those o...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2013-01-01
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| Series: | Parasite |
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| Online Access: | http://dx.doi.org/10.1051/parasite/2013009 |
| _version_ | 1827776822213869568 |
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| author | Rondelaud Daniel Titi Amal Vignoles Philippe Mekroud Abdeslam Dreyfuss Gilles |
| author_facet | Rondelaud Daniel Titi Amal Vignoles Philippe Mekroud Abdeslam Dreyfuss Gilles |
| author_sort | Rondelaud Daniel |
| collection | DOAJ |
| description | Experimental infections of Galba truncatula (two populations) with Fasciola hepatica or Paramphistomum daubneyi were carried out to study the effect of water temperature changes (3 h at a mean of 12 °C every week) on cercarial shedding during the patent period. The results were compared with those of control snails infected according to the same protocol and always maintained at 20 °C. Compared to controls, a significant increase in the number of cercariae-shedding snails, a significantly longer patent period and significantly greater cercarial production were noted in temperature-challenged snails, regardless of the type of digenean infection. In contrast, the number of incompletely formed metacercariae was significantly higher in temperature-challenged snails than in controls. Incompletely formed metacercariae of F. hepatica consisted of cysts whose colour remained whitish after shedding (25.4% for temperature-challenged snails) or whose dome was flattened after encystment (74.6%). Those of P. daubneyi were totally dark brown or blackish after formation. These incomplete metacercariae might originate from young differentiating cercariae within the snail body (F. hepatica) or from cercariae which died just after encystment (P. daubneyi). The use of regular temperature changes for snails infected with F. hepatica or P. daubneyi must be monitored carefully during collection of metacercariae to select completely formed cysts for infecting definitive hosts. |
| first_indexed | 2024-03-11T14:10:02Z |
| format | Article |
| id | doaj.art-4166b3d7288f46be9e1a94b1871b9e92 |
| institution | Directory Open Access Journal |
| issn | 1776-1042 |
| language | English |
| last_indexed | 2024-03-11T14:10:02Z |
| publishDate | 2013-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Parasite |
| spelling | doaj.art-4166b3d7288f46be9e1a94b1871b9e922023-11-02T00:27:35ZengEDP SciencesParasite1776-10422013-01-01201010.1051/parasite/2013009parasite120002Consequence of temperature changes on cercarial shedding from Galba truncatula infected with Fasciola hepatica or Paramphistomum daubneyiRondelaud DanielTiti AmalVignoles PhilippeMekroud AbdeslamDreyfuss GillesExperimental infections of Galba truncatula (two populations) with Fasciola hepatica or Paramphistomum daubneyi were carried out to study the effect of water temperature changes (3 h at a mean of 12 °C every week) on cercarial shedding during the patent period. The results were compared with those of control snails infected according to the same protocol and always maintained at 20 °C. Compared to controls, a significant increase in the number of cercariae-shedding snails, a significantly longer patent period and significantly greater cercarial production were noted in temperature-challenged snails, regardless of the type of digenean infection. In contrast, the number of incompletely formed metacercariae was significantly higher in temperature-challenged snails than in controls. Incompletely formed metacercariae of F. hepatica consisted of cysts whose colour remained whitish after shedding (25.4% for temperature-challenged snails) or whose dome was flattened after encystment (74.6%). Those of P. daubneyi were totally dark brown or blackish after formation. These incomplete metacercariae might originate from young differentiating cercariae within the snail body (F. hepatica) or from cercariae which died just after encystment (P. daubneyi). The use of regular temperature changes for snails infected with F. hepatica or P. daubneyi must be monitored carefully during collection of metacercariae to select completely formed cysts for infecting definitive hosts.http://dx.doi.org/10.1051/parasite/2013009CercariaCercarial sheddingFasciola hepaticaGalba truncatulaParamphistomum daubneyiTemperature change |
| spellingShingle | Rondelaud Daniel Titi Amal Vignoles Philippe Mekroud Abdeslam Dreyfuss Gilles Consequence of temperature changes on cercarial shedding from Galba truncatula infected with Fasciola hepatica or Paramphistomum daubneyi Parasite Cercaria Cercarial shedding Fasciola hepatica Galba truncatula Paramphistomum daubneyi Temperature change |
| title | Consequence of temperature changes on cercarial shedding from Galba truncatula infected with Fasciola hepatica or Paramphistomum daubneyi |
| title_full | Consequence of temperature changes on cercarial shedding from Galba truncatula infected with Fasciola hepatica or Paramphistomum daubneyi |
| title_fullStr | Consequence of temperature changes on cercarial shedding from Galba truncatula infected with Fasciola hepatica or Paramphistomum daubneyi |
| title_full_unstemmed | Consequence of temperature changes on cercarial shedding from Galba truncatula infected with Fasciola hepatica or Paramphistomum daubneyi |
| title_short | Consequence of temperature changes on cercarial shedding from Galba truncatula infected with Fasciola hepatica or Paramphistomum daubneyi |
| title_sort | consequence of temperature changes on cercarial shedding from galba truncatula infected with fasciola hepatica or paramphistomum daubneyi |
| topic | Cercaria Cercarial shedding Fasciola hepatica Galba truncatula Paramphistomum daubneyi Temperature change |
| url | http://dx.doi.org/10.1051/parasite/2013009 |
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