Gyrodactylus turnbulli Harris, 1986

Rubio-Godoy, Miguel, Paladini, Giuseppe & García-Vásquez, Adriana, 2010, Gyrodactylus jarocho sp. nov. and Gyrodactylus xalapensis sp. nov. (Platyhelminthes: Monogenea) from Mexican poeciliids (Teleostei: Cyprinodontiformes), with comments on the known gyrodactylid fauna infecting poeciliid fish, Zootaxa 2509, pp. 1-29 : 23-24

Gyrodactylus turnbulli Harris, 1986

( Figure 27 ; Tables 4 and 7)

Type host: Poecilia reticulata Peters (“guppy”).

Site of infection: Skin and fins.

Type locality: Not known.

Type material examined: Four voucher specimens from Poecilia reticulata kept in Dr. Andrew P. Shinn’s gyrodactylid collection were studied for light microscopy.

Comments: Type locality not known as parasites were collected from aquarium fish imported into Britain from Singapore. Harris (1986) discussed the fact that the origin of G. turnbulli is uncertain as its poeciliid host has been extensively dispersed by humans.

The marginal hooks of G. turnbulli most closely resemble those of G. gambusiae , G. m i l l e r i and G. pictae . Of these, G. milleri is unique in its possession of three, morphologically different marginal hooks whilst the sickles of G. gambusiae and G. pictae , proportionately are more robust than the comparatively slender G. turnbulli . The morphology of the G. turnbulli sickles, notably their shorter and slender sickle bases, permits its ready discrimination from both G. j a ro c h o sp. nov. and G. xalapensis sp. nov. ( Figures 28, 29 ).

Figures

FIGURES 15 – 29. A size invariant comparison of the marginal hook sickles of two new species of Gyrodactylus with the nine species previously recorded infecting poeciliids. 15. Gyrodactylus milleri Harris & Cable, 2000 (re-examination of the small, common form of marginal hook); 16. Overlay of G. milleri with G. j aroc h o sp. nov. (broken line); 17. Overlay of G. milleri with G. xalapensis sp. nov. (broken line); 18. Gyrodactylus pictae Cable, van Oosterhout, Barson & Harris, 2005 (re-examination); 19. Overlay of G. pictae with G. ja ro c ho sp. nov. (broken line); 20. Overlay of G. pictae with G. xalapensis sp. nov. (broken line); 21. Gyrodactylus poeciliae Harris & Cable, 2000 (re-examination); 22. Overlay of G. poeciliae with G. jaroc h o sp. nov. (broken line); 23. Overlay of G. poeciliae with G. xalapensis sp. nov. (broken line); 24. Gyrodactylus rasini Lucký, 1973 (re-examination); 25. Overlay of G. r a s i n i with G. j a ro c ho sp. nov. (broken line); 26. Overlay of G. rasini with G. xalapensis sp. nov. (broken line); 27. Scanning electron micrograph of Gyrodactylus turnbulli Harris, 1986 from Andrew P. Shinn’s collection (re-examination); 28. Overlay of G. turnbulli with G. j a ro c ho sp. nov. (broken line); 29. Overlay of G. turnbulli with G. xalapensis sp. nov. (broken line). Scale bars = 3 µm.