Skip to main content
    • Aa
    • Aa

Amphibdellid (monogenean) parasites of electric rays (Torpedinidae)

  • J. Llewellyn (a1)

Electric rays (Torpedinidae) are known to harbour on their gills certain monogenean parasites (Amphibdella spp. and Amphibdelloides spp.) whose taxonomy is in a very confused state. Muchof this confusion has centred around a single morphological feature: a ‘transverse bar’ has been variously held to be present or absent from the adhesive apparatus, or sometimes two such bars have been stated to be present. Among those who have regarded the trans-verse bar as having taxonomic importance, Price (1937) recognized two genera of amphibdellids distinguishable by the presence or absence of the bar, but Palombi (1949) and Bychowsky (1957) believe that the bar may be present in young specimens but absent or inconspicuous in older specimens. No-one has investigated the function of thistransverse bar, or, indeed, any functional aspect of the adhesive apparatus. Again little attention has been paid in taxonomy to the genitalia or host specificity, or, in spite of a record of an amphibdellid from the heart of its host, to micro-habitat.

Hide All
C. G. Alexander , 1954. Microcotyle macracantha n.sp., a monogenetic trematode from the Gulf of California, with a redescription of Amphibdelloides maccallumi (Johnston & Tiegs, 1922) Price, 1937. J. Parasit., Vol. 40, pp. 279–83.

A. Fraser-Brunner , 1949. Note on the Electric Rays of the genus Torpedo. Ann. Mag. nat. Hist., Ser. 12, Vol. 2, pp. 943–7.

W. J. Hargis , 1955. Monogenetic trematodes of Gulf of Mexico fishes. Part I. The superfamily Gyrodactyloidea. Biol. Bull, Woods Hole, Vol. 108, pp. 125–37.

G. Owen , 1955. Use of propylene phenoxetol as a relaxing agent. Nature, Lond., Vol. 175, p. 434.

G. Rees & J. Llewellyn , 1941. A record of the trematode and cestode parasites of fishes from the Porcupine Bank, Irish Atlantic Slope, and Irish Sea. Parasitology, Vol. 33, pp. 390–6.

H. W. Smith , 1936. The retention and physiological role of urea in the Elasmobranchii. Biol. Rev., Vol. 11, pp. 4982.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
Please enter your name
Please enter a valid email address
Who would you like to send this to? *


Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 2 *
Loading metrics...

Abstract views

Total abstract views: 427 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 18th October 2017. This data will be updated every 24 hours.