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Amphimermis enzoni n. sp. (Nematoda: Mermithidae) parasitizing damselflies and dragonflies in Argentina

José Matias Rusconi

José Matias Rusconi

Centro de Estudios Parasitológicos y de Vectores, (CEPAVE)-CCT-La Plata-CONICET-UNLPBuenos Aires, Argentina
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Rusconi, José Matias
, 
Cristian Di Battista

Cristian Di Battista

Instituto de Limnología “Dr. Raúl A. Ringuelet”, (ILPLA) La Plata-CONICET-UNLPBuenos Aires, Argentina
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Di Battista, Cristian
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Darío Balcazar

Darío Balcazar

Centro de Estudios Parasitológicos y de Vectores, (CEPAVE)-CCT-La Plata-CONICET-UNLPBuenos Aires, Argentina
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Balcazar, Darío
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Matías Rosales

Matías Rosales

Centro de Estudios Parasitológicos y de Vectores, (CEPAVE)-CCT-La Plata-CONICET-UNLPBuenos Aires, Argentina
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Rosales, Matías
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María Fernanda Achinelly

María Fernanda Achinelly

Centro de Estudios Parasitológicos y de Vectores, (CEPAVE)-CCT-La Plata-CONICET-UNLPBuenos Aires, Argentina
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Achinelly, María Fernanda
  
18 may 2020
Amphimermis enzoni n. sp. (Nematoda: Mermithidae) parasitizing damselflies and dragonflies in Argentina's Cover Image
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Publicado en línea: 18 may 2020
Páginas: 1 - 9
Recibido: 10 mar 2020
DOI: https://doi.org/10.21307/jofnem-2020-051
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© 2020 José Matias Rusconi et al., published by Sciendo.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1:

A. Nematode inside I. fluviatilis. (arrowhead) B. Post-parasitic juvenile (J4) emerging from R. bonaerensis. Scale bars: 1 mm.
A. Nematode inside I. fluviatilis. (arrowhead) B. Post-parasitic juvenile (J4) emerging from R. bonaerensis. Scale bars: 1 mm.

Figure 2:

Female (A-C). A. Head. B. Vulva (arrowhead). C. Tail. Post-parasitic juvenile (D, E). D. Head. E. Tail with appendage (arrowhead). Scale bars: 50 µm.
Female (A-C). A. Head. B. Vulva (arrowhead). C. Tail. Post-parasitic juvenile (D, E). D. Head. E. Tail with appendage (arrowhead). Scale bars: 50 µm.

Figure 3:

Male (A-F). A. Head showing cephalic papillae (arrowheads) and amphids (arrows). B. Tail showing the spicule. C. Proximal part of the spicule (white arrowheads showing the beginning of the spicule and black arrowhead showing a section of the proximal twisted part). D. Untwisted part of the spicule. E. Distal twisted part of the spicule (arrowhead). F. Tip of the spicule (arrowhead). Scale bars: 50 µm (A-F), 200 µm (B).
Male (A-F). A. Head showing cephalic papillae (arrowheads) and amphids (arrows). B. Tail showing the spicule. C. Proximal part of the spicule (white arrowheads showing the beginning of the spicule and black arrowhead showing a section of the proximal twisted part). D. Untwisted part of the spicule. E. Distal twisted part of the spicule (arrowhead). F. Tip of the spicule (arrowhead). Scale bars: 50 µm (A-F), 200 µm (B).

Figure 4:

Male tail (A, B). A. First papilla separated from the rest (arrow) of the cephalic papillae. B. Cloaca (arrow). Female (C, D). C. Vulva. D. Tail.
Male tail (A, B). A. First papilla separated from the rest (arrow) of the cephalic papillae. B. Cloaca (arrow). Female (C, D). C. Vulva. D. Tail.

Figure 5:

Male (A-D). A. Schematic arrangement of genital papillae. B. Tail, ventral view showing arrangement of genital papillae. C. Scheme of the spicule: 1 (proximal twisted part), 2 (untwisted part), 3 (distal twisted part), 4 (tip). D. Cross section, mid-body. d, dorsal chord; l, lateral chord; sv, subventral chord; v, ventral chord. Scale bars: 50 µm (A-C), 9 µm (D).
Male (A-D). A. Schematic arrangement of genital papillae. B. Tail, ventral view showing arrangement of genital papillae. C. Scheme of the spicule: 1 (proximal twisted part), 2 (untwisted part), 3 (distal twisted part), 4 (tip). D. Cross section, mid-body. d, dorsal chord; l, lateral chord; sv, subventral chord; v, ventral chord. Scale bars: 50 µm (A-C), 9 µm (D).

Figure 6:

Phylogeny of the Mermithidae family based on 18S rDNA data including the new species, Amphimermis enzoni. The tree topology is inferred by Bayesian inference (BI) and maximum likelihood (ML). Posterior probability and ultrafast bootstrap values are reported as BI/ML. Only node consistencies above 50% are shown. The tree is drawn to scale, with branch lengths in the same proportions as the evolutionary distances used to infer the phylogenetic tree.
Phylogeny of the Mermithidae family based on 18S rDNA data including the new species, Amphimermis enzoni. The tree topology is inferred by Bayesian inference (BI) and maximum likelihood (ML). Posterior probability and ultrafast bootstrap values are reported as BI/ML. Only node consistencies above 50% are shown. The tree is drawn to scale, with branch lengths in the same proportions as the evolutionary distances used to infer the phylogenetic tree.
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