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A new entomopathogenic nematode species and its association with a facultative necromenic nematode

M. B. Ávila-López

M. B. Ávila-López

  • Comisión Intersecretarial de Bioseguridad de los Organismos Genéticamente Modificados (CIBIOGEM-SECIHTI)Ciudad de México, México
  • Centro de Innovación para el Desarrollo Apícola Sustentable en Quintana Roo, Universidad Intercultural Maya de Quintana RooQuintana Roo, México;
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Ávila-López, M. B.
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D. I. Hernandez-Mena

D. I. Hernandez-Mena

Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad UniversitariaCiudad de México, Mexico
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Hernandez-Mena, D. I.
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J. E. Ibarra

J. E. Ibarra

Departamento de Biotecnología y Bioquímica, Cinvestav Unidad IrapuatoIrapuato, México
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Ibarra, J. E.
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V. M. Vidal-Martínez

V. M. Vidal-Martínez

Laboratorio de Patología acuática Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional Unidad MéridaMérida, México
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Vidal-Martínez, V. M.
  
31 dic 2024
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Pubblicato online: 31 dic 2024
Pagine: 345 - 356
Ricevuto: 06 set 2023
Accettato: 23 ott 2024
DOI: https://doi.org/10.2478/helm-2024-0038
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© 2024 M. B. Ávila-López et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1.

Heterorhabditis kankabi n. sp. SEM microphotographs. A, Head of an amfimictic female with six labial papillae and two amphids (magnification 5,000×); B, Posterior region of a hermaphrodite nematode showing anal area and tip of the tail (magnification 2,500×); C, Anterior region of the nematode where the excretory pore is observed in a hermaphroditic specimen (magnification 1,000×); D, infective juvenile with larval tooth and striated cuticle of the second instar (magnification 5,000×); E, Protruding vulvar region located in the middle part of the hermaphrodite specimen (magnification 5,000×); F, Anterior region of an ensheathed nematode showing the body with tessellate pattern (magnification 5,000×).
Heterorhabditis kankabi n. sp. SEM microphotographs. A, Head of an amfimictic female with six labial papillae and two amphids (magnification 5,000×); B, Posterior region of a hermaphrodite nematode showing anal area and tip of the tail (magnification 2,500×); C, Anterior region of the nematode where the excretory pore is observed in a hermaphroditic specimen (magnification 1,000×); D, infective juvenile with larval tooth and striated cuticle of the second instar (magnification 5,000×); E, Protruding vulvar region located in the middle part of the hermaphrodite specimen (magnification 5,000×); F, Anterior region of an ensheathed nematode showing the body with tessellate pattern (magnification 5,000×).

Fig. 2.

Schematic details of Heterorhabditis kankabi n. sp. A) anterior region of a hermaphrodite female; B) anterior region of an amphimictic female; C) apical view of a hermaphrodite female; D) tail of a hermaphrodite female; E) anterior region of an infective juvenile; F) tail of infective juvenile.
Schematic details of Heterorhabditis kankabi n. sp. A) anterior region of a hermaphrodite female; B) anterior region of an amphimictic female; C) apical view of a hermaphrodite female; D) tail of a hermaphrodite female; E) anterior region of an infective juvenile; F) tail of infective juvenile.

Fig. 3.

Phylogenetic relationships of species of the genus Heterorhabditis using the maximum likelihood method to generate the phylogenetic trees.The tree shows ITS on the right side and the 28S on the left side.
Phylogenetic relationships of species of the genus Heterorhabditis using the maximum likelihood method to generate the phylogenetic trees.The tree shows ITS on the right side and the 28S on the left side.

Fig. 4.

Clear field micrography of Metarhabditis rainai male ventral view showing eight bursal papillae.
Clear field micrography of Metarhabditis rainai male ventral view showing eight bursal papillae.

Fig. 5.

Metarhabditis rainai SEM microphotographs of male. A, posterior region lateral view bursal papillae with small adcloacal papillae, B, ventral view showing two pairs of small papillae on posterior edge of cloaca and spicules.
Metarhabditis rainai SEM microphotographs of male. A, posterior region lateral view bursal papillae with small adcloacal papillae, B, ventral view showing two pairs of small papillae on posterior edge of cloaca and spicules.

Fig. 6.

Phylogenetic relationships of species of the genus Metarhabditis using the maximum likelihood method to generate the phylogenetic trees.
Phylogenetic relationships of species of the genus Metarhabditis using the maximum likelihood method to generate the phylogenetic trees.

Genetic distances between Heterorhabditis kaankabi n_ sp_ and the Heterorhabditis species in the 28S and ITS ribosomal gene sequences_

Species Heterorhabditis kankabi n. sp.
28S ITS
p N p N
Heterorhabditis taysearae na na 1.22 11
Heterorhabditis mexicana 0.67 6 1.22 11
Heterorhabditis floridensis 0.67 6 0.66 6
Heterorhabditis baujardi 0.67 6 1.37 11
Heterorhabditis amazonensis 0.79 7 1.66 15
Heterorhabditis noenieputensis 2.92 26 9.43 83
Heterorhabditis indica 2.92 27 9.01 79
Heterorhabditis zealandica 5.77 51 24.66 215
Heterorhabditis megidis 6.00 53 22.45 194
Heterorhabditis downesi na na 21.69 187
Heterorhabditis safricana 5.20 46 22.03 191
Heterorhabditis marelatus 5.20 46 21.91 190
Heterorhabditis atacamensis 4.88 42 20.65 179
Heterorhabditis bacteriophora 4.68 42 21.81 193
Heterorhabditis georgiana 5.10 45 22.03 195
Heterorhabditis beicherriana 4.95 43 22.03 195
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Inglese
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4 volte all'anno
Argomenti della rivista:
Scienze biologiche, Zoologia, Ecologia, Scienze della vita, altro, Medicina, Medicina clinica, Microbiologia, Virologia ed Epidemiologia infettiva
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