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A Very Rare Malformation Affecting the Female Genital System of one Labronema Specimen (Dorylaimida, Dorylaimidae)

Reyes Peña-Santiago
Reyes Peña-Santiago
   | 17 apr 2019
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Article Category: Arts & Humanities
Pubblicato online: 17 apr 2019
Pagine: 1 - 4
Ricevuto: 10 set 2018
DOI: https://doi.org/10.21307/jofnem-2019-017
© 2019 Reyes Peña-Santiago et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Figure 1

Light micrographs of Labronema sp. A–E and G–I, abnormal female; F, normal female. A: anterior region in median lateral view; B: posterior genital branch (arrow pointing at the supposed position of vulva); C, E: genital system (arrow pointing at the supposed position of vulva); F: posterior genital branch; G: lip region in lateral surface view; H: entire body; I: caudal region (arrow pointing at anus). (Scale bars: A, G, I = 10 µm; B, D = 50 µm; C, E, F = 100 µm).
Light micrographs of Labronema sp. A–E and G–I, abnormal female; F, normal female. A: anterior region in median lateral view; B: posterior genital branch (arrow pointing at the supposed position of vulva); C, E: genital system (arrow pointing at the supposed position of vulva); F: posterior genital branch; G: lip region in lateral surface view; H: entire body; I: caudal region (arrow pointing at anus). (Scale bars: A, G, I = 10 µm; B, D = 50 µm; C, E, F = 100 µm).

Morphometrics of Labronema sp. from Spain. Measurements in µm, except L in mm, and in the form: average ± sd (range).

Character ♀* 11♀♀**
L 1.80 1.81 ± 0.15 (1.56–2.07)
a 22.5 21.5 ± 1.8 (17.8–23.6)
b 3.9 3.8 ± 0.3 (3.3–4.3)
c 56.2 66.1 ± 8.5 (56.4–79.6)
V ? 58.1 ± 0.9 (56.7–59.5)
c’ 0.7 0.6 ± 0.1 (0.5–0.8)
Lip region diameter 23 22.2 ± 1.0 (20–23)
Odontostyle length 26 25.1 ± 1.9 (22–28)
Odontophore length 42 40.8 ± 3.8 (33–44)
Neck length 466 472 ± 25 (417–514)
Pharyngeal expansion length 239 241 ± 20 (205–272)
Body diam. at neck base 75 79.2 ± 9.0 (65–98)
Mid-body 80 84.6 ± 8.1 (72–99)
Anus/cloaca 49 43.5 ± 2.9 (40–47)
Distance vulva – anterior end ? 1054 ± 99 (889–1232)
Prerectum length 102 118 ± 24 (84–160)
Rectum/cloaca length 59 59.8 ± 5.0 (52–68)
Tail length 32 27.8 ± 4.0 (24–34)

Malformations observed in the female genital system of dorylaims.

Anomaly Species Habitat Country Reference
Two duplicate systems Aporcelaimellus obtusicaudatus ? ? Geraert (1963)
Eudorylaimus sp. ? Spain Peña-Santiago (1986)
Xiphinema diversicaudatum Woodland UK–Scotland Brown and Coiro (1984)
Xiphinema dentatum ? Serbia Radivojević (1991)
Didelphic-opisthodelphic Xiphinema coxi coxi Alfalfa field USA–Florida Cho and Robbins (1990)
Loss of anterior genital branch Xiphinema coxi coxi Alfalfa field USA–Florida Cho and Robbins (1990)
Vulvaless Xiphinema dentatum ? Serbia Radivojević (1991)
Two vulvae Longidorus danuvii Salix alba Poland Kornobis (2012)
Longidorus euonymus ? ? Barsi (1994)
Longidorus juvenilis Vineyard Slovenia Sirca et al. (2007)
Longidorus laevicapitatus Coffee Sao Tome Lamberti et al. (1987)
Longidorus sp. ? ? Jairajpuri and Ahmad (1969)
Mesodorylaimus bastiani ? ? Loof (1969)
? ? Valocká and Sabová (1980)
Nygolaimus sp. ? ? Jairajpuri and Ahmad (1969)
Xiphinema dentatum ? Serbia Radivojević (1991)
Xiphinema diversicaudatum ? ? Barsi (1994)
Peach orchard Czech Republic Kumari and Decraemer (2009)
Xiphinema index Fig Italy Catalano (1991)
Xiphinema turcicum ? Yugoslavia Radivojević (1991)
Xiphinema vuittenezi Vineyard Italy Coiro and Lamberti (1980)
? ? Barsi (1994)
Apple orchard Czech Republic Kumari and Decraemer (2006)
Apple orchard Czech Republic Kumari and Decraemer (2009)
Three vulvae Mesodorylaimus bastiani ? ? Valocká and Sabová (1980)
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2640-396X
Lingua:
Inglese
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