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Larvae trypanorhynch (Cestoda) infecting the dusky flounder, Syacium papillosum (Paralichthyidae: Pleuronectiformes) in the continental shelf of the Yucatan Peninsula, Mexico

A. Paredes-Trujillo
A. Paredes-Trujillo
, 
D. I. Hernández-Mena
D. I. Hernández-Mena
, 
M. L. Aguirre-Macedo
M. L. Aguirre-Macedo
, 
M. B. Mendoza-Garfias
M. B. Mendoza-Garfias
 et 
V. M. Vidal-Martínez
V. M. Vidal-Martínez
   | 23 avr. 2024
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Article Category: Research Article
Publié en ligne: 23 avr. 2024
Pages: 46 - 58
Reçu: 30 août 2023
Accepté: 24 nov. 2023
DOI: https://doi.org/10.2478/helm-2024-0002
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© 2024 A. Paredes-Trujillo et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Sampling sites from s-GoM. Blue dots show the sampling sites where Syacium papillosum were caught in trawls. The letters in each red dots show specimens collected for morphological description. a) Nybelinia sp. 1, b) Nybelinia sp. 2, c) Nybelinia sp. 3, d) Nybelinia sp. 4, e) Kotorella pronosoma, f) Oncomegas wageneri.
Sampling sites from s-GoM. Blue dots show the sampling sites where Syacium papillosum were caught in trawls. The letters in each red dots show specimens collected for morphological description. a) Nybelinia sp. 1, b) Nybelinia sp. 2, c) Nybelinia sp. 3, d) Nybelinia sp. 4, e) Kotorella pronosoma, f) Oncomegas wageneri.

Fig. 2.

Larval species of trypanorhynch cestodes. A. Nybelinia sp. 1, B. Nybelinia sp. 2, C. Nybelinia sp. 3, D. Nybelinia sp. 4, E. Kotorella pronosoma, F. Oncomegas wageneri. Some of the available measurements were made for morphological and morphometric description for larval cestodes: pars bothridialis (pbo), pars vaginalis (pv), pars bulbosa (pb), pars postbulbosa (ppb), velum (vel), tentacle length (TL).
Larval species of trypanorhynch cestodes. A. Nybelinia sp. 1, B. Nybelinia sp. 2, C. Nybelinia sp. 3, D. Nybelinia sp. 4, E. Kotorella pronosoma, F. Oncomegas wageneri. Some of the available measurements were made for morphological and morphometric description for larval cestodes: pars bothridialis (pbo), pars vaginalis (pv), pars bulbosa (pb), pars postbulbosa (ppb), velum (vel), tentacle length (TL).

Fig. 3.

Scanning electron micrographs of larvae species of trypanorhynch cestodes in Syacium papillosum from s-GoM. A-D. Nybelinia sp. 2, B. External armature, C. Metabasal hook, D. Basal hook. E-H. Nybelinia sp. 3, F. External armature, G. Metabasal armature, H. Basal armature. I-L. Nybelinia sp. 4, J. External armature, K. Metabasal armature, L. Basal armature. M. Kotorella pronosoma. N-O. Oncomegas wageneri.
Scanning electron micrographs of larvae species of trypanorhynch cestodes in Syacium papillosum from s-GoM. A-D. Nybelinia sp. 2, B. External armature, C. Metabasal hook, D. Basal hook. E-H. Nybelinia sp. 3, F. External armature, G. Metabasal armature, H. Basal armature. I-L. Nybelinia sp. 4, J. External armature, K. Metabasal armature, L. Basal armature. M. Kotorella pronosoma. N-O. Oncomegas wageneri.

Fig. 4

Phylogenetic relationships of the trypanorhynch cestodes found in Syacium papillosum resulting from the Maximum Likelihood analysis with the 28S gene. The newly generated sequences are highlighted in bold. Numbers near the tree nodes represent the Bootstrap support values and the scale-bar indicates the number of substitutions per site.
Phylogenetic relationships of the trypanorhynch cestodes found in Syacium papillosum resulting from the Maximum Likelihood analysis with the 28S gene. The newly generated sequences are highlighted in bold. Numbers near the tree nodes represent the Bootstrap support values and the scale-bar indicates the number of substitutions per site.
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Life Sciences, Zoology, Ecology, other, Medicine, Clinical Medicine, Microbiology, Virology and Infection Epidemiology
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