Notomegarhynchus navonae n. gen. and n. sp. (Eucestoda: Tetraphyllidea), from skates (Rajidae: Arhynchobatinae) in the southern hemisphere

Notomegarhynchus n. gen. (Eucestoda: Tetraphyllidea) is proposed to accommodate Notomegarhynchus navonae n. gen., n. sp. from Atlantoraja castelnaui in Mar del Plata, Argentina. Nototmegarhynchus shetlandicum n. comb. from Bathyraja eatonii and B. maccaini in South Shetlands region, Antarctica, is a...

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Detalles Bibliográficos
Publicado: 2002
Materias:
parasitology
article
cestode
electric fish
life cycle
morphology
nonhuman
Notomegarhynchus navonae
parasite identification
taxonomy
Animals
Argentina
Cestoda
Female
Histocytochemistry
Intestines
Male
Microscopy, Electron, Scanning
Skates (Fish)
Terminology
Arhynchobatinae
Atlantoraja castelnaui
Bathyraja eatonii
Bathyraja maccaini
Echeneibothriinae
Eucestoda
Myzorhynchus
Phyllobothriidae
Rajidae
Tetraphyllidea
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223395_v88_n2_p340_Ivanov
http://hdl.handle.net/20.500.12110/paper_00223395_v88_n2_p340_Ivanov
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00223395_v88_n2_p340_Ivanov
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spelling paper:paper_00223395_v88_n2_p340_Ivanov2023-06-08T14:49:53Z Notomegarhynchus navonae n. gen. and n. sp. (Eucestoda: Tetraphyllidea), from skates (Rajidae: Arhynchobatinae) in the southern hemisphere parasitology article cestode electric fish life cycle morphology nonhuman Notomegarhynchus navonae parasite identification taxonomy Animals Argentina Cestoda Female Histocytochemistry Intestines Male Microscopy, Electron, Scanning Skates (Fish) Terminology Arhynchobatinae Atlantoraja castelnaui Bathyraja eatonii Bathyraja maccaini Cestoda Echeneibothriinae Eucestoda Myzorhynchus Phyllobothriidae Rajidae Tetraphyllidea Notomegarhynchus n. gen. (Eucestoda: Tetraphyllidea) is proposed to accommodate Notomegarhynchus navonae n. gen., n. sp. from Atlantoraja castelnaui in Mar del Plata, Argentina. Nototmegarhynchus shetlandicum n. comb. from Bathyraja eatonii and B. maccaini in South Shetlands region, Antarctica, is a second species in the genus. Notomegarhynchus belongs to the Echeneibothriinae within the Phyllobothriidae. It can be distinguished from all other tetraphyllidean genera by the structure of the scolex in form of a massive myzorhynchus consisting of a proscolex and an apical organ, both of which are nonretractable and noninvaginable; in addition, there are 4 pedunculated and nonloculate acetabula. Notomegarhynchus shetlandicum is differentiated from N. navonae particularly in details of acetabular and myzorhynchus morphology, arrangement of testes, and shape of eggs. The inclusion of Notomegarhynchus in the Echeneibothriinae requires emendation of the diagnosis of the subfamily to include taxa possessing postvaginal testes. In addition, new terminology is proposed for distinct regions of the scolex. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223395_v88_n2_p340_Ivanov http://hdl.handle.net/20.500.12110/paper_00223395_v88_n2_p340_Ivanov
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic parasitology
article
cestode
electric fish
life cycle
morphology
nonhuman
Notomegarhynchus navonae
parasite identification
taxonomy
Animals
Argentina
Cestoda
Female
Histocytochemistry
Intestines
Male
Microscopy, Electron, Scanning
Skates (Fish)
Terminology
Arhynchobatinae
Atlantoraja castelnaui
Bathyraja eatonii
Bathyraja maccaini
Cestoda
Echeneibothriinae
Eucestoda
Myzorhynchus
Phyllobothriidae
Rajidae
Tetraphyllidea
spellingShingle parasitology
article
cestode
electric fish
life cycle
morphology
nonhuman
Notomegarhynchus navonae
parasite identification
taxonomy
Animals
Argentina
Cestoda
Female
Histocytochemistry
Intestines
Male
Microscopy, Electron, Scanning
Skates (Fish)
Terminology
Arhynchobatinae
Atlantoraja castelnaui
Bathyraja eatonii
Bathyraja maccaini
Cestoda
Echeneibothriinae
Eucestoda
Myzorhynchus
Phyllobothriidae
Rajidae
Tetraphyllidea
Notomegarhynchus navonae n. gen. and n. sp. (Eucestoda: Tetraphyllidea), from skates (Rajidae: Arhynchobatinae) in the southern hemisphere
topic_facet parasitology
article
cestode
electric fish
life cycle
morphology
nonhuman
Notomegarhynchus navonae
parasite identification
taxonomy
Animals
Argentina
Cestoda
Female
Histocytochemistry
Intestines
Male
Microscopy, Electron, Scanning
Skates (Fish)
Terminology
Arhynchobatinae
Atlantoraja castelnaui
Bathyraja eatonii
Bathyraja maccaini
Cestoda
Echeneibothriinae
Eucestoda
Myzorhynchus
Phyllobothriidae
Rajidae
Tetraphyllidea
description Notomegarhynchus n. gen. (Eucestoda: Tetraphyllidea) is proposed to accommodate Notomegarhynchus navonae n. gen., n. sp. from Atlantoraja castelnaui in Mar del Plata, Argentina. Nototmegarhynchus shetlandicum n. comb. from Bathyraja eatonii and B. maccaini in South Shetlands region, Antarctica, is a second species in the genus. Notomegarhynchus belongs to the Echeneibothriinae within the Phyllobothriidae. It can be distinguished from all other tetraphyllidean genera by the structure of the scolex in form of a massive myzorhynchus consisting of a proscolex and an apical organ, both of which are nonretractable and noninvaginable; in addition, there are 4 pedunculated and nonloculate acetabula. Notomegarhynchus shetlandicum is differentiated from N. navonae particularly in details of acetabular and myzorhynchus morphology, arrangement of testes, and shape of eggs. The inclusion of Notomegarhynchus in the Echeneibothriinae requires emendation of the diagnosis of the subfamily to include taxa possessing postvaginal testes. In addition, new terminology is proposed for distinct regions of the scolex.
title Notomegarhynchus navonae n. gen. and n. sp. (Eucestoda: Tetraphyllidea), from skates (Rajidae: Arhynchobatinae) in the southern hemisphere
title_short Notomegarhynchus navonae n. gen. and n. sp. (Eucestoda: Tetraphyllidea), from skates (Rajidae: Arhynchobatinae) in the southern hemisphere
title_full Notomegarhynchus navonae n. gen. and n. sp. (Eucestoda: Tetraphyllidea), from skates (Rajidae: Arhynchobatinae) in the southern hemisphere
title_fullStr Notomegarhynchus navonae n. gen. and n. sp. (Eucestoda: Tetraphyllidea), from skates (Rajidae: Arhynchobatinae) in the southern hemisphere
title_full_unstemmed Notomegarhynchus navonae n. gen. and n. sp. (Eucestoda: Tetraphyllidea), from skates (Rajidae: Arhynchobatinae) in the southern hemisphere
title_sort notomegarhynchus navonae n. gen. and n. sp. (eucestoda: tetraphyllidea), from skates (rajidae: arhynchobatinae) in the southern hemisphere
publishDate 2002
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223395_v88_n2_p340_Ivanov
http://hdl.handle.net/20.500.12110/paper_00223395_v88_n2_p340_Ivanov
_version_ 1768544989061578752

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