The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp.

de Chambrier & Vaucher (1999) compared the proteocephalidean cestode Spatulifer maringaensis Pavanelli & Rego, 1989 from Hemisorubim platyrhynchos (Valenciennes) with similar specimens, which they described as S. cf. maringaensis, parasitising Sorubim lima (Bloch & Schneider) collected i...

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Autores principales:	Arredondo, N.J., Gil De Pertierra, A.A.
Formato:	JOUR
Materias:	animal animal disease article catfish cestode cestodiasis classification female fish disease histology male parasitology species difference Animals Catfishes Cestoda Cestode Infections Female Fish Diseases Male Species Specificity Candidatus Microthrix Eucestoda Hemisorubim platyrhynchos Pisces Proteocephalidea Siluriformes Sorubim lima Spatulifer Spatulifer maringaensis
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_01655752_v70_n3_p223_Arredondo
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_01655752_v70_n3_p223_Arredondo
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spelling	todo:paper_01655752_v70_n3_p223_Arredondo2023-10-03T15:03:01Z The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp. Arredondo, N.J. Gil De Pertierra, A.A. animal animal disease article catfish cestode cestodiasis classification female fish disease histology male parasitology species difference Animals Catfishes Cestoda Cestode Infections Female Fish Diseases Male Species Specificity Candidatus Microthrix Cestoda Eucestoda Hemisorubim platyrhynchos Pisces Proteocephalidea Siluriformes Sorubim lima Spatulifer Spatulifer maringaensis de Chambrier & Vaucher (1999) compared the proteocephalidean cestode Spatulifer maringaensis Pavanelli & Rego, 1989 from Hemisorubim platyrhynchos (Valenciennes) with similar specimens, which they described as S. cf. maringaensis, parasitising Sorubim lima (Bloch & Schneider) collected in the Paraná and Paraguay Rivers. No remarkable differences between these worms were found by these authors, except for the scolex diameter and a different infection rate in each fish host. In order to elucidate the taxonomic status of the fish cestode Spatulifer cf. maringaensis from Sorubim lima, type and voucher material of S. maringaensis from H. platyrhynchos, and voucher and new material recently collected from Sorubim lima in Argentina are described in terms of their internal morphology and tegumental surface. During the study, mature and gravid worms with smaller metascoleces were found among voucher specimens from both hosts and in the new material from S. lima. The number of testes in the type-material was difficult to assess, but it could be determined in the voucher material from the type-host as being within the range of the specimens from S. lima. Both taxa are morphologically identical and can therefore be considered as conspecific. The data on their parasitological indices support the idea that S. lima is the principal final host and H. platyrhynchos is a secondary final host. Spatulifer maringaensis is widespread throughout the Paraná basin. A comparison of the microthrix pattern of S. maringaensis with that of S. rugosa (Woodland, 1935) revealed that they have the same type of microtriches, but with a different distribution, size and density. Tumuli were observed for the first time in a Neotropical taxon. Some studies have shown that the microthrix pattern is useful for characterising and discriminating species of the Proteocephalidea, and it was used herein as a tool for determining the conspecificity of S. cf. maringaensis with S. maringaensis. © 2008 Springer Science+Business Media B.V. Fil:Arredondo, N.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01655752_v70_n3_p223_Arredondo
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	animal animal disease article catfish cestode cestodiasis classification female fish disease histology male parasitology species difference Animals Catfishes Cestoda Cestode Infections Female Fish Diseases Male Species Specificity Candidatus Microthrix Cestoda Eucestoda Hemisorubim platyrhynchos Pisces Proteocephalidea Siluriformes Sorubim lima Spatulifer Spatulifer maringaensis
spellingShingle	animal animal disease article catfish cestode cestodiasis classification female fish disease histology male parasitology species difference Animals Catfishes Cestoda Cestode Infections Female Fish Diseases Male Species Specificity Candidatus Microthrix Cestoda Eucestoda Hemisorubim platyrhynchos Pisces Proteocephalidea Siluriformes Sorubim lima Spatulifer Spatulifer maringaensis Arredondo, N.J. Gil De Pertierra, A.A. The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp.
topic_facet	animal animal disease article catfish cestode cestodiasis classification female fish disease histology male parasitology species difference Animals Catfishes Cestoda Cestode Infections Female Fish Diseases Male Species Specificity Candidatus Microthrix Cestoda Eucestoda Hemisorubim platyrhynchos Pisces Proteocephalidea Siluriformes Sorubim lima Spatulifer Spatulifer maringaensis
description	de Chambrier & Vaucher (1999) compared the proteocephalidean cestode Spatulifer maringaensis Pavanelli & Rego, 1989 from Hemisorubim platyrhynchos (Valenciennes) with similar specimens, which they described as S. cf. maringaensis, parasitising Sorubim lima (Bloch & Schneider) collected in the Paraná and Paraguay Rivers. No remarkable differences between these worms were found by these authors, except for the scolex diameter and a different infection rate in each fish host. In order to elucidate the taxonomic status of the fish cestode Spatulifer cf. maringaensis from Sorubim lima, type and voucher material of S. maringaensis from H. platyrhynchos, and voucher and new material recently collected from Sorubim lima in Argentina are described in terms of their internal morphology and tegumental surface. During the study, mature and gravid worms with smaller metascoleces were found among voucher specimens from both hosts and in the new material from S. lima. The number of testes in the type-material was difficult to assess, but it could be determined in the voucher material from the type-host as being within the range of the specimens from S. lima. Both taxa are morphologically identical and can therefore be considered as conspecific. The data on their parasitological indices support the idea that S. lima is the principal final host and H. platyrhynchos is a secondary final host. Spatulifer maringaensis is widespread throughout the Paraná basin. A comparison of the microthrix pattern of S. maringaensis with that of S. rugosa (Woodland, 1935) revealed that they have the same type of microtriches, but with a different distribution, size and density. Tumuli were observed for the first time in a Neotropical taxon. Some studies have shown that the microthrix pattern is useful for characterising and discriminating species of the Proteocephalidea, and it was used herein as a tool for determining the conspecificity of S. cf. maringaensis with S. maringaensis. © 2008 Springer Science+Business Media B.V.
format	JOUR
author	Arredondo, N.J. Gil De Pertierra, A.A.
author_facet	Arredondo, N.J. Gil De Pertierra, A.A.
author_sort	Arredondo, N.J.
title	The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp.
title_short	The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp.
title_full	The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp.
title_fullStr	The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp.
title_full_unstemmed	The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp.
title_sort	taxonomic status of spatulifer cf. maringaensis pavanelli & rego, 1989 (eucestoda: proteocephalidea) from sorubim lima (bloch & schneider) (pisces: siluriformes), and the use of the microthrix pattern in the discrimination of spatulifer spp.
url	http://hdl.handle.net/20.500.12110/paper_01655752_v70_n3_p223_Arredondo
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The taxonomic status of Spatulifer cf. maringaensis Pavanelli & Rego, 1989 (Eucestoda: Proteocephalidea) from Sorubim lima (Bloch & Schneider) (Pisces: Siluriformes), and the use of the microthrix pattern in the discrimination of Spatulifer spp.

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