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First report of Mesocriconema xenoplax (Nematoda: Criconematidae) from turfgrass in Portugal and in Europe

M. L. Inácio

M. L. Inácio

Instituto Nacional de Investigação Agrária e Veterinária (INIAV, I.P), Quinta do MarquêsPortugal
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Inácio, M. L.
, 
L. C. Rusinque

L. C. Rusinque

Instituto Nacional de Investigação Agrária e Veterinária (INIAV, I.P), Quinta do MarquêsPortugal
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Rusinque, L. C.
, 
M. J. Camacho

M. J. Camacho

Instituto Nacional de Investigação Agrária e Veterinária (INIAV, I.P), Quinta do MarquêsPortugal
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Camacho, M. J.
 and 
F. Nóbrega

F. Nóbrega

Instituto Nacional de Investigação Agrária e Veterinária (INIAV, I.P), Quinta do MarquêsPortugal
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Nóbrega, F.
  
Jul 23, 2019
First report of Mesocriconema xenoplax (Nematoda: Criconematidae) from turfgrass in Portugal and in Europe's Cover Image
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Article Category: Arts & Humanities
Published Online: Jul 23, 2019
Page range: 1 - 6
Received: Apr 26, 2018
DOI: https://doi.org/10.21307/jofnem-2019-035
Keywords
© 2019 M. L. Inácio et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1:

Symptoms of Mesocriconema xenoplax infestation in turfgrass.
Symptoms of Mesocriconema xenoplax infestation in turfgrass.

Figure 2:

Light micrographs of Mesocriconema xenoplax (female). (A) Anterior body portion showing lip region and the long stylet; (B) posterior body portion showing rounded tail shape.
Light micrographs of Mesocriconema xenoplax (female). (A) Anterior body portion showing lip region and the long stylet; (B) posterior body portion showing rounded tail shape.

Figure 3:

Phylogenetic relationships of Mesocriconema xenoplax collected from Portugal (MG647831) and other geographical regions, based on the sequence alignment of the D2/D3 rDNA loci. The phylogram was generated using the maximum likelihood method based on the Tamura 3-parameter model with 1,000 bootstrap replications. Bootstrap values are indicated at the nodes. The analysis involved 27 nucleotide sequences. All positions containing gaps and missing data were eliminated. Evolutionary analyses were conducted in MEGA 6.
Phylogenetic relationships of Mesocriconema xenoplax collected from Portugal (MG647831) and other geographical regions, based on the sequence alignment of the D2/D3 rDNA loci. The phylogram was generated using the maximum likelihood method based on the Tamura 3-parameter model with 1,000 bootstrap replications. Bootstrap values are indicated at the nodes. The analysis involved 27 nucleotide sequences. All positions containing gaps and missing data were eliminated. Evolutionary analyses were conducted in MEGA 6.

Comparison of the gross range of morphometrics recorded of the Portuguese population of Mesocriconema xenoplax (all measurements are in µm and in the format mean ± SD (range)), with the descriptions of Loof and De Grisse (1989)_

Character/ratio Gross range (10♀♀) As per Loof and De Grisse (1989)
L 685 ± 20.7 (650–700) 590 (560–670)
a 13.9 ± 0.9 (12.0–14.6) 13.2 (12.0–15.0)
b 4.2 ± 0.1 (4.1–4.3) 4.2 (4.0–4.3)
c 20.8 ± 1.3 (19.4–23.3) 21.0 (19.0–23.4)
%V 92 ± 0.9 (91–93%) 92 (91–93%)
Stylet 77.5 ± 2.1 (75.0–81.0) 81.0 (77.5–85.0)
R 113 ± 1.9 (108–114) 109 (104–116)
Ran 5–8 7–8
RVan 0–4 –
RV 7–8 8–9
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