Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/9988

Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Description of three new species of Gyrodactylus von Nordmann, 1832 (Monogenea) parasitising Oreochromis niloticus niloticus (L.) and O. mossambicus (Peters) (Cichlidae)
Authors: Garcia-Vasquez, Adriana
Hansen, Haakon
Christison, Kevin
Bron, James
Shinn, Andrew
Contact Email: aps1@stir.ac.uk
Keywords: Monogenea
Gyrodactylus
G. hildae
G. ulinganisus
G. yacatli
taxonomy
cichlid
tilapia
Oreochromis n. niloticus
O. mossambicus
Issue Date: Mar-2011
Publisher: Springer
Citation: Garcia-Vasquez A, Hansen H, Christison K, Bron J & Shinn A (2011) Description of three new species of Gyrodactylus von Nordmann, 1832 (Monogenea) parasitising Oreochromis niloticus niloticus (L.) and O. mossambicus (Peters) (Cichlidae), Acta Parasitologica, 56 (1), pp. 20-33.
Abstract: Three new species of Gyrodactylus are described from two species of Oreochromis (Cichlidae): Gyrodactylus hildae sp. nov. from the Nile tilapia, Oreochromis niloticus niloticus, and from an unconfirmed cichlid in Ethiopia; Gyrodactylus ulinganisus sp. nov. from a South African population of Mozambique tilapia, Oreochromis mossambicus; and, Gyrodactylus yacatli sp. nov. from O. n. niloticus reared in Mexico. The hamuli and marginal hooks of G. hildae sp. nov. and G. yacatli sp. nov. differ notably from G. cichlidarum, a species commonly found on O. n. niloticus. The hooks of G. ulinganisus sp. nov., however, are morphologically similar to those of G. cichlidarum, but the two species were found to differ by 42 nucleotide substitutions (24 within the 342 bp long ITS1; 18 within the 303 bp long ITS2) and by 1 insertion/deletion. This study confirms that Nile and Mozambique tilapia harbour a number of different species of Gyrodactylus, with G. cichlidarum being the most frequently encountered and being associated with mortalities of juvenile O. n. niloticus. This study discusses the host specificity of gyrodactylids on commercial cichlid species and the potential repercussions of their movement on stocks of fish into new environments where cichlids are already present.
Type: Journal Article
URI: http://hdl.handle.net/1893/9988
DOI Link: http://dx.doi.org/10.2478/s11686-011-0005-2
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: University of Stirling
National Veterinary Institute, Oslo
University of the Free State
Aquaculture
Aquaculture

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