Kroyeria Sphyrnae Rangnekar, 1957 (Copepoda, Siphonostomatoida, Kroyeriidae): First Description of the Male, Supplementary Remarks on the Female, a New Geographic Record for the Species, and a Key to Kroyeria Males

Abstract

Kroyeria sphyrnae Rangnekar, 1957, collected from scalloped hammerheads, Sphyrna lewini, and smooth hammerheads, S. zygaena, is reported for the rst time from the Indian Ocean off the coast of South Africa. The male of K. sphyrnae is described for the rst time and supplementary notes on the female are provided. All females exhibited dorsal stylets with bi d tips, and females collected from S. zygaena exhibited an unusual, balloon-like in ation of the rst third of the genital complex. However, all females conformed in all other respects to published descriptions of K. sphyrnae. A key to the identi cation of known males of Kroyeria is also provided. RÉSUMÉKroyeria sphyrnae Rangnekar, 1957, récolté sur les requins-marteaux halicornes, Sphyrna lewini, et sur les requins-marteaux communs, S. zygaena, est signalé pour la première fois de l'océan Indien au large de la côte d'Afrique du Sud. Le mâle de K. sphyrnae est décrit pour la première fois et des notes supplémentaires sur la femelle sont fournies. Toutes les femelles présentaient des stylets dorsaux à extrémités bi des, et les femelles collectées sur S. zygaena montraient une dilatation inhabituelle, en forme de ballon sur le premier tiers du complexe génital. Cependant, toutes les femelles étaient conformes en tous les autres points aux descriptions publiées de K. sphyrnae. Une clé d'identi cation des mâles connus de Kroyeria est également fournie. 3 /

Marine fish parasitology in South Africa: history of discovery and future direction

“…In addition to the description of new species, the UL and UFS research groups published descriptions of the unknown adults of known fish parasitic copepods (Dippenaar et al 2001;Grobler et al 2002;Dippenaar and Jordaan 2006), morphological studies (Dippenaar and Olivier 1999;Grobler et al 2003bGrobler et al , 2004, new host and locality records (Dippenaar and Jordaan 2007), and even the rare observations of a hypersymbiont found on a copepod parasitising a marine fish . This hypersymbiont on the monogenean Udonella Johnston, 1835 had to date been found exclusively on caligid copepods, but in this particular case, Udonella myliobati Guberlet, 1936 was found on Lepeophtheirus natalensis, an ectoparasite of the spotted ragged-tooth shark, Carcharias taurus.…”