snail act as the intermediate host of trematode

1. Welcome to My
Presentation
“The spiral in a snail’s shell is the same mathematically as the
spiral in the Milky Way galaxy, and It’s also the same
mathematically as the spirals in our DNA. It's the same ratio that
you will find in very basic music that transcends cultures all over
the world.”
- Joseph Gordon Levitt

2. Course No: VPAR-613 2T
Course Title: Malacology
MD. AKHTARUZZAMAN
ID No.: 17VPARAJJ12M
Reg. No.: 38443; Session: 2011-12
Snail Vector of Trematode: An
Overview

3. Introduction
Trematodes are of extreme economic importance, specially
in tropical developing countries. There is very considerable
economic loss in the form of mortality, reduced weight gain,
decreased production, low fertility, reduction in draft power
and poor hide quality in Bangladesh due to parasitic diseases.
Different species of vector snails carry larval stage of different
Trematode belonging to the superfamilies Schistosomatoidea,
Fascioloidea, Paramphistomoidea, Ehinostomatoidea,
Diplostomoidea and Pronocephaloidea.

4. Family: Planorbidae
Vector Trematode
Indoplanorbis exustus
Schistosoma spindale, S. indicum, S.
nasale, Cotylophoron cotylophorum,
Gastrothylux crumenifer, Gastrodiscus
scundus
Planorbis planorbis
Paramphistomum cervi, Tracheophilus
sisowi
Gyraulus parvus
Gigantobilharzia gyrauli, Haematoloechus
parviplexus, Haematoloechus breviplexus

5. Family: Planorbidae
Vector Trematode
Biomphalaria glabrata
Schistosoma mansoni
Bulinus truncatus
Schistosoma haematobium, S. bovis,
Paramphistomum cervi, Paramphistomum
microbothrium, Gastrodiscus aegypticus
Hippeutis umbilicalis
Fasciolopsis buski

6. Family: Planorbidae
Vector Trematode
Planobis corneus
Bilharziella polonica, Prosthogonimus
ovustus, Syngamus trachea(Nematode)
Helisoma trivolvis
Echinostoma revolutum, E. trivolvis,
Spirorchis artericola, Spirorchis eliphantis,
S. parvus

7. Family: Lymnaeidae
Vector Trematode
Lymnaea luteola Schistosoma spindale, S. indicum, S.
nasale, S. incognitum, Fasciola gigantica,
F. hepatica, Clinostomum giganticum,
Echinostomum revolutum, Orientobilharzia
dattae, Echinoparyphium bugula
Lymnaea auricularia Fasciola gigantica, F. hepatica,
Clinostomum complanatum, Echinostomum
revolutum, Orientobilharzia turkestanica,
Trichobilharzia franki, T. ocellata,
Notocotylus attenuatus
Lymnaea natalensis
Fasciola gigantica, F. hepatica,
Echinostomum revolutum, Trichobilharzia
spp

8. Family: Lymnaeidae
Vector Trematode
Pseudosuccinea columella
Fasciola gigantica, F. hepatica,
Fascioloides magna, Paramphistomum
microbothrium
Lymnaea palustris
Fascioloides magna,Trichobilharzia
ocellata, T.stagniclae

9. Family: Ancylidae
Vector Trematode
Ferrissia tenuis
Schistosoma haematobium
Ferrissia novangliae
Megalodiscus temperatus
Ferrissia parallela
Haematoloechus spp

10. Family: Physidae
Vector Trematode
Physa gyrina
Gygantobilharzia huronensis, Cotylurus
flabelliformis
Physa parkeri Trichobilharzia physellae, Notocotylus
urbanensis
Physa aucta
Notocotylus urbanensis
Physa occidentalis Echinostoma revolutum

11. Family: Hydrobiidae
Vector Trematode
Oncomelania hupensis
Schistosoma japonicum, Paragonimus
westermani
Amnicola limosa
Metorchis conjunctus, Opisthorchis tonkae,
Prosthogonimus macrorchis,
Echinochasmus donaldsoni
Bythynia tentaculata
Prosthogonimus ovstus, Clonorchis
sinensis, Echinostomum revolutum,
Syngamus trachea

12. Family: Thiaridae
Vector Trematode
Thiara granifera
Paragonimus westermani, Philophthalmus
gralli
Thiara tuberculata
Clonorchis sinensis, Paragonimus
westermani, Gastrodiscus aegyptiacus

13. Family: Viviparidae
Vector Trematode
Viviparus viviparus
Echinochasmus elongatus, E. rugosus
Campeloma rufum
Troglotrema mustelae

14. Family: Pilidae
Vector Trematode
Pila lazonica
Echinostoms ilocanum

15. References
 Text Book of Veterinary Clinical Parasitology by Soulsby,
E. J. L.
 Laboratory Guide and notes for Medical Malacology by
Malek, E. A.
 Distribution Patterns of Vector Snails and Trematode
Cercaria in their Vectors in Some Selected Areas of
Mymensingh by Z. Islam, M. Z. Alam, S. Akter, B. C. Roy
and M. M. H. Mondal
 Wikipedia

16. Thank you!!