Abstract
Plerocerci of Progrillotia dasyatidis Beveridge et al. (2004), family Progrillotiidae Palm (2004), are reported from several teleost fishes off the Portuguese coast, giving a first insight into the life cycle biology of these unique trypanorhynchs. The first description and assignment of the plerocercus to P. dasyatidis is based on morphological features, such as scolex and bothria morphology and tentacular hook arrangement, and is expanded to incorporate the surface morphology, examined by scanning electron microscopy, constituting the first ultrastructural study for a species within this family. Comparisons with other species of the genus Progrillotia are made, based on the scolex and bothria morphology and tentacular hook arrangement, in order to give an overview into the variability within this genus, whereas comparisons with adults from the same species evidence the variability within the same species. The systematic approaches of Campbell and Beveridge (1994) and Palm (1997, 2004) are discussed and emphasis is placed on the utility of microtriches and the characteristic life cycle within the genus as systematic characters.
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Acknowledgements
The authors would like to thank Prof. António Calado and Dr. Violante Gomes, from the University of Aveiro, Portugal, for the help with the SEM study and Dr. Joaber Pereira Jr., from the University of Rio Grande, Brazil, and Dr. Ian Beveridge from the University of Melbourne, Australia for the comments and suggestions concerning an earlier version of the manuscript. This study was partially supported by the grant SFRH/BD/8983/2002 from the Fundação para a Ciência e a Tecnologia (Portugal) attributed to JFM. The experiments comply with the current laws of the country in which they were performed.
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Marques, J.F., Santos, M.J., Cabral, H.N. et al. First record of Progrillotia dasyatidis Beveridge Neifar and Euzet, 2004 (Cestoda: Trypanorhyncha) plerocerci from Teleost fishes off the Portuguese coast, with a description of the surface morphology. Parasitol Res 96, 206–211 (2005). https://doi.org/10.1007/s00436-005-1341-7
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DOI: https://doi.org/10.1007/s00436-005-1341-7