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Pterygodermatites (Paucipectines) baiomydis n. sp. (Nematoda: Rictulariidae), a parasite of Baiomys taylori (Cricetidae).

Lynggaard C, García-Prieto L, Guzmán-Cornejo C, Osorio-Sarabia D - Parasite (2014)

Bottom Line: Specimens were studied using light and scanning electronic microscopy.This is the 19th species of the subgenus Paucipectines described worldwide and the fourth collected in Mexico.It is differentiated from the remaining species in the subgenus by having 25 perioral denticles, arranged in a triangle (seven on each lateroventral margin, and eleven on the dorsal margin), and 10 pairs of caudal papillae.

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Affiliation: Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, CP 04510 México, D.F., Mexico.

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(G–J) Pterygodermatites (Paucipectines) baiomydis n. sp., a parasite of Baiomys taylori from Colima, Mexico. Scanning electron micrographs: G. Female, anterior end, subventral combs. H. Female, anterior end, apical view [Cephalic papillae: 1C. Pair 1. 2C. Pair 2. Labial papillae: 1Iv. Internal pair 1 (ventral). 2Ilv. Internal pair 2 (lateroventral). 3Ild. Internal pair 3 (dorsal). a. Amphid. V. Ventral region. D. Dorsal region]. I. Female, anterior end, ventral view. J. Female, posterior end, ventral view.
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Figure 2: (G–J) Pterygodermatites (Paucipectines) baiomydis n. sp., a parasite of Baiomys taylori from Colima, Mexico. Scanning electron micrographs: G. Female, anterior end, subventral combs. H. Female, anterior end, apical view [Cephalic papillae: 1C. Pair 1. 2C. Pair 2. Labial papillae: 1Iv. Internal pair 1 (ventral). 2Ilv. Internal pair 2 (lateroventral). 3Ild. Internal pair 3 (dorsal). a. Amphid. V. Ventral region. D. Dorsal region]. I. Female, anterior end, ventral view. J. Female, posterior end, ventral view.

Mentions: Total length 18.35–21.41 (20.06 ± 1.4, n = 5) mm, prevulvar width 210–310 (280 ± 40, n = 5), postvulvar width 300–450 (340 ± 60, n = 5). Buccal cavity 90–120 (100 ± 23, n = 5) deep by 70–110 (100 ± 14, n = 5) wide in lateral view (Fig. 1C). Twenty-five perioral denticles 6.51–9.76 (7.80 ± 1, n = 25) long, arranged in triangle (7 on each lateroventral margin, and 11 on dorsal margin; Fig. 2H). Three esophageal teeth 20–40 (30 ± 5, n = 15) long (Fig. 1B). Total length of esophagus 2260–2650 (2470 ± 140, n = 5) (13.6% of body length), muscular portion 310–440 (380 ± 70, n = 3) long, 50–70 (60 ± 8, n = 3) wide at level of nerve ring; glandular portion 1630–1860 (1710 ± 130, n = 3) long, 80–110 (94 ± 10, n = 3) wide. Nerve ring and deirids located 210–350 (280 ± 70, n = 5) and 460–660 (560 ± 100, n = 4) from anterior end, respectively (Fig. 1A). Excretory pore not observed. Vulva 2220–3950 (3420 ± 780, n = 5) from anterior end and 770–1830 (1190 ± 410, n = 5) from esophago-intestinal junction, at level of the 42nd cuticular projection. Two subventral rows with 64–75 (71 ± 3.54, n = 5) cuticular projections (Figs. 2G and 2H); 38–44 (42 ± 2.53, n = 5) prevulvar combs (Fig. 1F) and 25–31 (29 ± 2.22, n = 5) postvulvar spines (Fig. 1E); –16 (12 ± 2.13, n = 5) combs between posterior end of esophagus and vulva. Maximum length of combs and spines 100–220 (160 ± 50, n = 5) and 130–240 (170 ± 40, n = 5), respectively. Last spine located 1020–2108 (1632 ± 420, n = 5) from posterior end. Tail 160–250 (210 ± 20, n = 5) long (Fig. 2J). Larvated eggs 30–40 (31 ± 4, n = 10) by 15–34 (25 ± 4, n = 10).


Pterygodermatites (Paucipectines) baiomydis n. sp. (Nematoda: Rictulariidae), a parasite of Baiomys taylori (Cricetidae).

Lynggaard C, García-Prieto L, Guzmán-Cornejo C, Osorio-Sarabia D - Parasite (2014)

(G–J) Pterygodermatites (Paucipectines) baiomydis n. sp., a parasite of Baiomys taylori from Colima, Mexico. Scanning electron micrographs: G. Female, anterior end, subventral combs. H. Female, anterior end, apical view [Cephalic papillae: 1C. Pair 1. 2C. Pair 2. Labial papillae: 1Iv. Internal pair 1 (ventral). 2Ilv. Internal pair 2 (lateroventral). 3Ild. Internal pair 3 (dorsal). a. Amphid. V. Ventral region. D. Dorsal region]. I. Female, anterior end, ventral view. J. Female, posterior end, ventral view.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4222293&req=5

Figure 2: (G–J) Pterygodermatites (Paucipectines) baiomydis n. sp., a parasite of Baiomys taylori from Colima, Mexico. Scanning electron micrographs: G. Female, anterior end, subventral combs. H. Female, anterior end, apical view [Cephalic papillae: 1C. Pair 1. 2C. Pair 2. Labial papillae: 1Iv. Internal pair 1 (ventral). 2Ilv. Internal pair 2 (lateroventral). 3Ild. Internal pair 3 (dorsal). a. Amphid. V. Ventral region. D. Dorsal region]. I. Female, anterior end, ventral view. J. Female, posterior end, ventral view.
Mentions: Total length 18.35–21.41 (20.06 ± 1.4, n = 5) mm, prevulvar width 210–310 (280 ± 40, n = 5), postvulvar width 300–450 (340 ± 60, n = 5). Buccal cavity 90–120 (100 ± 23, n = 5) deep by 70–110 (100 ± 14, n = 5) wide in lateral view (Fig. 1C). Twenty-five perioral denticles 6.51–9.76 (7.80 ± 1, n = 25) long, arranged in triangle (7 on each lateroventral margin, and 11 on dorsal margin; Fig. 2H). Three esophageal teeth 20–40 (30 ± 5, n = 15) long (Fig. 1B). Total length of esophagus 2260–2650 (2470 ± 140, n = 5) (13.6% of body length), muscular portion 310–440 (380 ± 70, n = 3) long, 50–70 (60 ± 8, n = 3) wide at level of nerve ring; glandular portion 1630–1860 (1710 ± 130, n = 3) long, 80–110 (94 ± 10, n = 3) wide. Nerve ring and deirids located 210–350 (280 ± 70, n = 5) and 460–660 (560 ± 100, n = 4) from anterior end, respectively (Fig. 1A). Excretory pore not observed. Vulva 2220–3950 (3420 ± 780, n = 5) from anterior end and 770–1830 (1190 ± 410, n = 5) from esophago-intestinal junction, at level of the 42nd cuticular projection. Two subventral rows with 64–75 (71 ± 3.54, n = 5) cuticular projections (Figs. 2G and 2H); 38–44 (42 ± 2.53, n = 5) prevulvar combs (Fig. 1F) and 25–31 (29 ± 2.22, n = 5) postvulvar spines (Fig. 1E); –16 (12 ± 2.13, n = 5) combs between posterior end of esophagus and vulva. Maximum length of combs and spines 100–220 (160 ± 50, n = 5) and 130–240 (170 ± 40, n = 5), respectively. Last spine located 1020–2108 (1632 ± 420, n = 5) from posterior end. Tail 160–250 (210 ± 20, n = 5) long (Fig. 2J). Larvated eggs 30–40 (31 ± 4, n = 10) by 15–34 (25 ± 4, n = 10).

Bottom Line: Specimens were studied using light and scanning electronic microscopy.This is the 19th species of the subgenus Paucipectines described worldwide and the fourth collected in Mexico.It is differentiated from the remaining species in the subgenus by having 25 perioral denticles, arranged in a triangle (seven on each lateroventral margin, and eleven on the dorsal margin), and 10 pairs of caudal papillae.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratorio de Helmintología, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, CP 04510 México, D.F., Mexico.

Show MeSH
Related in: MedlinePlus