A comparative study of Ligophorus uruguayense and L. saladensis (Monogenea: Ancyrocephalidae) from Mugil liza (Teleostei: Mugilidae) in southern Brazil
|Author(s)||Marchiori Natalia C.1, Pariselle Antoine2, Pereira Joaber, Jr.3, Agnese Jean-Francois2, Durand Jean-Dominique4, Vanhove Maarten P. M.5, 6, 7, 8|
|Affiliation(s)||1 : Empresa Pesquisa Agr & Extensao Rural Santa Catar, Campo Expt Piscicultura Camboriu, Camboriu, SC, Brazil.
2 : Univ Montpellier 2, CNRS, IRD, Inst Sci Evolut, Montpellier, France.
3 : Fed Univ Rio Grande Fdn, Oceanog Inst, Lab Parasite Biol Aquat Organisms, Rio Grande, RS, Brazil.
4 : Univ Montpellier 2, IRD, Montpellier, France.
5 : Univ Leuven, Dept Biol, Lab Biodivers & Evolutionary Genom, Leuven, Belgium.
6 : Masaryk Univ, Fac Sci, Dept Bot & Zool, CS-61137 Brno, Czech Republic.
7 : Royal Museum Cent Africa, Dept Biol, Invertebrates Unit, Tervuren, Belgium.
8 : Hellen Ctr Marine Res, Inst Marine Biol Resources & Inland Waters, Anavyssos, Greece.
|Source||Folia Parasitologica (0015-5683) (Folia Parasitologica), 2015-05 , Vol. 62 , N. 1 , P. 024 (10 p.)|
|WOS© Times Cited||12|
|Keyword(s)||morphology, molecular systematics, mullet, parasite, taxonomy|
Representatives of Ligophorus Euzet et Suriano, 1977 were found on the gills of Mugil liza Valenciennes caught in southern Brazil. They were identified as Ligophorus uruguayense Failla Siquier et Ostrowski de Nufiez, 2009 and Ligophorus saladensis Marcotegui et Martorelli, 2009, even though specific identification proved to be difficult due to inconsistencies in some diagnostic features reported for these two species. Therefore, a combined morphological and molecular approach was used to critically review the validity of these species, by means of phase contrast and confocal fluorescence microscopical examination of sclerotised hard parts, and assessing the genetic divergence between L. saladensis, L. uruguayense and their congeners using rDNA sequences. The main morphological differences between the two species relate to the shape of the accessory piece of the penis and the median process of the ventral bar. The accessory piece in L. uruguayense is shorter than in L. saladensis, has a cylindrical, convex upper lobe and straight lower lobe (vs with the distal tip of the lower lobe turning away from the upper lobe in the latter species). The ventral bar has a V-shaped anterior median part in L. uruguayense (vs U-shaped in L. saladensis). The two species are suggested to be part of a species complex together with L. mediterraneus Sarabeev, Balbuena et Euzet, 2005. We recommend to generalise such comparative assessment of species of Ligophorus for a reliable picture of the diversity and diversification mechanisms within the genus, and to make full use of its potential as an additional marker for mullet taxonomy and systematics.