Life-Cycle of Cyathostoma lari, Blanchard 1849 (Nematoda, Strongyloidea)

Abstract

DURING an investigation into helminth parasitism in wild birds in northern England, specimens of an unusual nematode, Cyathostoma lari E. Blanchard 1849, were recovered from a variety of host species. C. lari, a parasite of the nasal and orbital sinuses of gulls1,2, has been recorded only at infrequent intervals in various parts of Europe and was not known to occur in Britain until Burt and Eadie3 recovered it from Larus ridibundus, L. cinereus, Corvus frugilegus, C. monedula, C. corone, and Tringa totanus in Scotland (St. Andrews). I have also found it in the first four hosts listed above and additionally in Sturnus vulgaris, and Ardea cinerea.