Pterygodermatites (Multipectines) affinis (Jägerskiöl, 1904) (Nematoda: Rictulariidae), a parasite of Cerdocyon thous (Linnaeus, 1766) (Carnivora: Canidae) from the Brazilian Amazon

Silva, Naida Paola Araújo da; Lima, Ana Rita de; Branco, Érika; Pinheiro, Raul Henrique da Silva; Giese, Elane Guerreiro

doi:10.1590/S1984-29612020041

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Revista Brasileira de Parasitologia Veterinária

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Original Article • Rev. Bras. Parasitol. Vet. 29 (3) • 2020 • https://doi.org/10.1590/S1984-29612020041 copy

Pterygodermatites (Multipectines) affinis (Jägerskiöl, 1904) (Nematoda: Rictulariidae), a parasite of Cerdocyon thous (Linnaeus, 1766) (Carnivora: Canidae) from the Brazilian Amazon

Pterygodermatites (Multipectines) affinis (Jägerskiöl, 1904) (Nematoda: Rictulariidae), um parasito de Cerdocyon thous (Linnaeus, 1766) (Carnivora: Canidae) da Amazônia brasileira

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

Among the Nematodes of Cerdocyon thous, the genus Pterygodermatites is characteristic for presenting cuticular projections along the body, being mentioned in different hosts in South America, although there are no records of its occurrence in the Amazon Biome. To enable further exploration in terms of their morphology and morphometry, the nematodes collected from cadavers of C. thous were fixed and observed using bright field microscopy and scanning electron microscopy, revealing characteristics compatible with P. (Multipectines) affinis, thus contributing more information about the geographic distribution of the parasite, as well as knowledge of the helminthological fauna of wild mammals in the Brazilian Amazon.

Keywords:
Nematoda; wild mammal; geographic distribution; Amazon

Caracteres	Pterygodermatites (Multipectines) affinis (Jägerskiöl, 1904)
Caracteres	Male	Female	Male	Female	Male	Female	Male	Female
Hosts	*Cerdocyon thous*		*Cerdocyon thous*		*Canis aureus*		*L. gymnocercus*
Site of infection	Intestine		Intestine		Intestine		Intestine
Type locality	Pará, Brazil		Minas Gerais, Brazil		Paraíba, Brazil		Argentina
Bioma	Amazônia		Atlantic Florest		Caatinga		Pampa
Length (mm) ^a a Measurements are given in micrometers unless otherwise noted;	6–10 (8)^c	11–17 (14)	6.8	18.4	9.2	11.86	2–12 (7.2)	9–20 (13.85)
Width	178–307 (235)	203–347 (283)	176–477 (350.25)		167	184	150–315 (243)	165–475 (328)
Number of cuticular plates	104–111	103–150	98–110	–	102–114	127–139	107–120 (112)	123–140 (132)
Buccal capsule^L, ^b b Abbreviations: L: length, W: width, NCP: Number of cuticular projections from the extremity anterior to the vulva, pe: pedunculata, se: sessil, un: unpaired ventral papilla, ph: phasmids;	27–50 (42)	38–63 (52)	25–62.5 (34.88)		–	–	25–39 (35)	38–45 (41)
Buccal capsule^W,b	28–36 (34)	37–52 (42)	16–55 (48.88)		–	–	35–55 (47.3)	60–75 (63)
Nervous ring	132–315 (232)	117–338 (249)	–	–	–	–	160	220–400 (310)
Muscular esophagus^L,b	187–440 (356)	274–557 (396)	3.23^d d The author presents the total size of the esophagus (Muscular esophagus and glandular esophagus);		2.9^d	3.5^d	0.009–1.46 (1.14)^e	1.65–2.98 (2.37)^e e The author presents of esophago morphometry in just one example (Male: Muscular esophagus 285 μm and glandular esophagus 615 μm; Female: Muscular esophagus 353.75 μm and glandular esophagus 2.13 mm;
Glandular esophagus (mm)^L,b	2–3 (3)	3			2.9^d	3.5^d	0.009–1.46 (1.14)^e
Vulva ^(NCP),b	48–61		52–58		29–58		51–61
Vulva (Position)	Prequatorial		Prequatorial		Prequatorial		Prequatorial
Eggs^L×W,b	18–38 (29) 15–26 (21)		14–16 (15) × 8–12 (10.36)		24.9 × 17		35–38 (36.25) × 25–29 (26.75)
Pre-cloacal papillae	3pe+1un^b	–	–	–	3pe+1un^b	–	3pe^b	–
Post-cloacal papillae	6pe+1se+1ph^b	–	–	–	6pe+1se+1ph^b	–	5pe+1se^b	–
Spicules	183–228 (202)	–	175–142.5	–	194	–	195–240 (223)	–
Gubernaculum	Present		–		Absent		Present
Number of cuticular projections	7–8	–	–	–	–	–	7–9 (8)	–
Tail	228–390 (321)	183– 407 (211)	–	–	–	–	180–320 (235)	225–295 (253.5)
Caudal alae	Present		–	–	Present		Present
Number of species	10	10	6	8	10	10	10	10
Reference	In this study		Duarte (2007)Duarte FH. Helmintofauna em Cerdocyon thous Linnaeus, 1766 (Carnivora, Canidae) na região de Juiz de Fora, Minas Gerais [Dissertação]. Minas Gerais: Universidade Federal de Juiz De Fora; 2007.		Lima (2009)Lima RCA. Helmintos gastrointestinais de Cerdocyon thous (Linnaeus, 1766) Smith, 1839 provenientes da área de caatinga do Estado da Paraíba, Brasil [Dissertação]. São Paulo: Universidade Estadual de São Paulo; 2009.		Scioscia et al. (2016)Scioscia NP, Beldomenico PM, Denegri GM. New host and distribution expansion for Pterygodermatites (Multipectines) affinis. Helminthologia 2016; 53(1): 81-86. http://dx.doi.org/10.1515/helmin-2015-0076. http://dx.doi.org/10.1515/helmin-2015-00...
Caracteres	Pterygodermatites (Multipectines) pluripectinata (Hoppe, Araújo de Lima, Tebaldi & Nascimento, 2010)
Caracteres	Male	Female	Male	Female	Male	Female	Male	Female
Hosts	*Cerdocyon thous*		Cerdocyon thous		Cerdocyon thous		Cerdocyon thous
Site of infection	Intestine		Intestine		Intestine		Intestine
Type locality	Pará, Brazil		Paraíba, Brazil		Mato Grosso do Sul, Brazil		Paraná, Brazil
Bioma	Amazônia		Caatinga		Pantanal		Mata Atlântica
Length (mm)^a	6–10 (8)^c	11–17 (14)	8.78	15.78	4.66	5.62–6.48 (605)	6.3–6.7 (6.5)	20.3–20.6 (20.4)
Width	178–307 (235)	203–347 (283)	257	294	240	250–260 (260)	305.5–324 (315)	383
Number of cuticular plates	104–111	103–150	105–114	116–150	–	130–150	–	–
Buccal capsule^L,b	27–50 (42)	38–63 (52)	33	38	70	80–90 (80)	–	–
Buccal capsule^W,b	28–36 (34)	37–52 (42)	32	28	50	30–50 (40)	–	–
Nervous ring	132–315 (232)	117–338 (249)	162	199.8	–	–	324–352 (338)	333–370 (352)
Muscular esophagus^L,b	187–440 (356)	274–557 (396)	376	388	–	2–2.1 (2.1)^d	3.17–3.23 (3.2)^d	4.44–5.27 (4.86)^d
Glandular esophagus (mm)^L,b	2–3 (3)	3	2.09	2.54	–	2–2.1 (2.1)^d	3.17–3.23 (3.2)^d	4.44–5.27 (4.86)^d
Vulva^(NCP),b	48–61		48–60		–^f f Distance from the anterior end to the vulva 2.20 mm (2.14–2.27 mm);		– ^g g Distance from the anterior end to the vulva 5.25 mm (4.7–5.7 mm).
Vulva (Position)	Prequatorial		Prequatorial		Prequatorial		Prequatorial
Eggs^L×W,b	18–38 (29) × 15–26 (21)		38 × 28.5		–		–
Pre-cloacal papillae	3pe+1un^b	–	3pe^b	–	3pe^b	–	–	–
Post-cloacal papillae	6pe+1se^b	–	6pe+1se^b	–	6pe+1se^b	–	–	–
Spicules^L,b	183–228 (203)	–	253	–	120	–	213–241 (227)
Gubernaculum	Present		Absent		Absent		–
Number of cuticular projections	7–8	–	8–9	–	–	–	–	–
Tail	228–390 (321)	183–407 (211)	–	194	–	140–200 (170)	–	–
Caudal alae	Present		Present		Present		–
Number of species	10	10	10	10	1	2	2	2
Reference	In this study		Hoppe et al. (2010)Hoppe EGL, Lima RCA, Tebaldi JH, Nascimento AA. Pterygodermatites (Multipectines) pluripectinata n. sp. (Spirurida: Rictulariidae), a nematode parasite of the crab-eating fox Cerdocyon thous (Linnaeus, 1766) from Caatinga shrubland, Brazil. J Helminthol 2010; 84(3): 312-316. http://dx.doi.org/10.1017/S0022149X0999071X. PMid:20056009. http://dx.doi.org/10.1017/S0022149X09990...		Gomes et al. (2015)Gomes AP, Olifiers N, Santos MM, Simões RO, Maldonado A Jr. New records of three species of nematodes in Cerdocyon thous from the Brazilian Pantanal wetlands. Rev Bras Parasitol Vet 2015; 24(3): 324-330. http://dx.doi.org/10.1590/S1984-29612015061. PMid:26444063. http://dx.doi.org/10.1590/S1984-29612015...		Moraes (2016)Moraes MFD. Estudos parasitológicos em cães domésticos errantes e carnívoros selvagens generalistas no Parque Nacional do Iguaçu, Foz do Iguaçu [Dissertação]. Jaboticabal: Universidade Estadual Paulista; 2016.

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[1] *Corresponding author: Elane Guerreiro Giese. E-mail: lheaufra@gmail.com