Morphological diagnosis of <i>Setaria labiatopapillosa</i> in domestic bovids from Marajó Island, Brazil

Rodrigues, Rogério Antonio Ribeiro; Conga, David Marcial Fernandez; Santos, Jeannie Nascimento dos; Gonçalves, Evonnildo Costa; Pinheiro, Raul Henrique da Silva; Giese, Elane Guerreiro

doi:10.1590/S1984-29612021055

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Revista Brasileira de Parasitologia Veterinária

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Short Communication • Rev. Bras. Parasitol. Vet. 30 (3) • 2021 • https://doi.org/10.1590/S1984-29612021055 copy

Morphological diagnosis of Setaria labiatopapillosa in domestic bovids from Marajó Island, Brazil

Diagnóstico morfológico de Setaria labiatopapillosa em bovinos domésticos da Ilha do Marajó, Brasil

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

The genus Setaria is known worldwide for parasiting wild and domestic mammals, with 43 species registered, of which five occur in the American continent. The objective of this study was to characterize the occurrence, morphology and morphometry of S. labiatopapillosa in B. taurus and B. bubalis in Marajó Island, Brazil. Carcass inspections of 420 cattle were carried out in two slaughterhouses in Pará. The nematodes were found on the white and serous viscera of the small intestine, being cleaned and discussed for analysis by light microscopy and scanning electron microscopy. The morphological and morphometric characteristics are compatible with S. labiatopapillosa parasitizing both species, with a prevalence of 25% (B. bubalis) and 24% (B. taurus). Information obtained by scanning electron microscopy was added to the description of the species, in addition to expanding the distribution of this parasite in the national territory.

Keywords:
Nematoda; Onchocercidae; parasite; Bovidae; Amazon

Morphometric characterization	S. labiatopapillosa				S. labiatopapillosa		S. digitata		S. bidentata
Morphometric characterization	Male	Female	Male	Female	Male	Female	Male	Female	Male	Female
Host	Bubalus bubalis		Bos taurus		Bos indicus and Bos taurus		Bos indicus and Bos taurus		Mazama americana
Locality	Brazil				China, Malayan, India and Africa		Colombo		Peru
Total Length (mm)	32 – 35	39– 60	34–36	39–65	40–51	60–94	35–46	65–75	31.8–38	51.1–78.8
Width	263–276	300–423	215–232	143–760	380–450	600–900	300–500	700–900	267–323	486–612
Head elevations	16–33	13–46	41.6–56.6	27–54	–	–	–	–	–	–
Oral capsule	16–33	10–53	17–33	10–50	–	–	–	–	–	–
Nerve ring	253–273	133–316	110–167	112–317	250–280	250–290	200–300	200–300	141–218	109–208
Esophagus (mm)	7.3–8.3	8–10	7–8	5.4–8.7	–	–	–	–	2.5–3.6	3.3–4.1
Muscular esophagus	650–786	203–850	650–786.6	203–853	600–800	600–850	500–600	600–700	382–449	267–529
Glandular esophagus	7.3–8.3	7.4–9.9	7.28–8.28	7.2–9.7	7.0–9.5	7.3–10.4	5.5–6.5	5.5–6.5	–	–
Deirids	303–483	240–556	303–483	240–557	500–530	430–630	–	240–560	269–407	381–520
Vulva (mm)	–	0.45–0.78		0.45–0.75		0.45–0.80	–	0.5–0.6	–	0.203–0.399
Longer spicule	300–358	–	300–358	–	120–160	–	300–360	–	223–305	–
Small spicule	92–158	–	97–160	–	–	–	90–160	–	110–154	–
Lateral appendages	–	130–300	–	133–290	–	90–130	–	50–110	–	–
Tail	–	108–405	–	107–415	170–200	440–600	–	400–500	–	338–468
Numbers of specimens	5	10	5	10	–	–	8	6	8	10
Reference		In this study			Yeh (1959)		Railliet & Henry (1911)		Gomez-Puerta & Mayor (2017)

Colégio Brasileiro de Parasitologia Veterinária FCAV/UNESP - Departamento de Patologia Veterinária, Via de acesso Prof. Paulo Donato Castellane s/n, Zona Rural, , 14884-900 Jaboticabal - SP, Brasil, Fone: (16) 3209-7100 RAMAL 7934 - Jaboticabal - SP - Brazil
E-mail: cbpv_rbpv.fcav@unesp.br

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[1] *Corresponding author: lheaufra@gmail.com