Occurrence of Dipetalonema gracile in a wild population of woolly monkey Lagothrix poeppiigii in the northeastern Peruvian Amazon

Abstract Dipetalonema gracile (Rudolphi, 1809) (Filarioidea: Onchocercidae) is one of six species of cavities filarial parasites of Neotropical non-human primates. The present study recorded the occurrence of D. gracile, provides morphological and morphometric data and extends the geographical distribution. Adult filariae were obtained from the thoracic and abdominal cavities of 38 specimens of woolly monkey, which were used for local human consumption, in the northeastern Peruvian Amazon. Male and female filarids were processed and analysed using light and scanning electron microscopy. Details of the cephalic papillae, post-cloacal bands and papillae, vulva, phasmid position and lateral appendages are showed by scanning electron microscopy and is recorded the occurrencce of Lagothrix poeppigii monkey as a new host of this filaria in the Yavari-Mirin river basin, Peruvian Amazon.

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Atractis thapari (Nematoda, Atractidae) parasitizing Chelonoidis carbonarius and C. denticulatus (Testudinidae) in the state of Piauí, Brazil

Revista Brasileira de Parasitologia Veterinária ◽

10.1590/s1984-29612018007 ◽

2018 ◽

Vol 27 (2) ◽

pp. 146-153

Author(s):

Anangela Ravena da Silva Leal ◽

Simone Mousinho Freire ◽

Marcelo Knoff ◽

Delir Corrêa Gomes ◽

Jeannie Nascimento dos Santos ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Neotropical Region ◽

Health Conditions ◽

Taxonomic Identification ◽

Bright Field ◽

New Host ◽

Male And Female ◽

Mean Intensity ◽

Scanning Electron

Abstract Atractis thapari Petter, 1966, an atractid nematode, was collected parasitizing the large intestine of tortoises of the species Chelonoidis carbonarius (Spix, 1824) (Cc) and C. denticulatus (Linnaeus, 1766) (Cd) (Testudinidae) in the Zoobotanical Park of the municipality of Teresina, state of Piauí, Brazil. Taxonomic identification was based on morphological and morphometrical features, and using bright-field and scanning electron microscopy. The present study adds new observations on the morphology of A. thapari, mainly relating to mouth papillae, the excretory pore, deirids, and male and female posterior ends. The parasitic indices of prevalence (P), mean intensity (MI), mean abundance (MA) and range of infection (RI) for A. thapari in these two tortoise species were: P = 100%, MI = 154,667, MA = 154,667, RI = 5,500-588,500 (Cc); P = 100%, MI = 93,639, MA = 93,639, RI = 1,000-224,500 (Cd). This report confirms the occurrence of A. thapari in Neotropical region, South America, Brazil, and extends its occurrences to a new host, the tortoise C. carbonarius. Adjustment of host management with the aim of improving hygiene and health conditions is suggested.

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Scanning electron microscopy of the operculum of Garra lamta (Hamilton) (Cyprinidae:Cypriniformes), an Indian hill stream fish

Australian Journal of Zoology ◽

10.1071/zo09082 ◽

2010 ◽

Vol 58 (3) ◽

pp. 182 ◽

Cited By ~ 3

Author(s):

Swati Mittal ◽

Usha Kumari ◽

Pinky Tripathi ◽

Ajay Kumar Mittal

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Epithelial Cells ◽

Goblet Cells ◽

Stream Fish ◽

Male And Female ◽

Fish Breeding ◽

Inner Surface ◽

Garra Lamta ◽

Scanning Electron

The surface architecture of the epidermis on the outer surface of the operculum (OE) and the epithelium on the inner surface of the operculum (EISO) of Garra lamta was examined by scanning electron microscopy. The surface appeared smooth on the OE and wavy on the EISO. A wavy epithelium is considered to facilitate an increase in its stretchability, during the expansion of the branchial chamber. The OE and the EISO were covered by a mosaic pavement of epithelial cells with characteristic patterns of microridges and microbridges. Interspersed between the epithelial cells were mucous goblet cell pores, which were not significantly different in number in the OE and the EISO. Nevertheless, their surface area in the EISO was significantly higher than in the OE. This could be an adaptation to secrete higher amounts of mucus on the EISO for keeping the branchial chamber lining clean, avoiding clogging, the increased slipperiness reducing friction from water flow and increased efficiency in protecting against microbial attachments. Rounded bulges on the OE and the EISO were associated with mucous goblet cells. The absence of the taste buds in the EISO, in contrast to the OE, suggests that their function in the branchial chamber may not be of much significance in this fish. Breeding tubercles on the OE are believed to facilitate better contact between the male and female during breeding.

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Co-infection with filarial nematodes in Sapajus macrocephalus and Cebus albifrons (Primates: Cebidae) from the Peruvian Amazon

Journal of Helminthology ◽

10.1017/s0022149x18000287 ◽

2018 ◽

Vol 93 (3) ◽

pp. 375-378 ◽

Cited By ~ 1

Author(s):

D.F. Conga ◽

P. Mayor ◽

A.P. Furtado ◽

E.G. Giese ◽

J.N. Santos

Keyword(s):

Original Description ◽

Human Consumption ◽

Peruvian Amazon ◽

New Host ◽

Cebus Albifrons ◽

Filarial Nematodes ◽

New Geographical Record ◽

Thoracic And Abdominal ◽

First Time ◽

New Host Records

AbstractDipetalonema caudispina (Molin, 1858) and D. gracile (Rudolphi, 1809) (Filarioidea: Onchocercidae) are two of six known species of filarial nematodes that parasitize Neotropical non-human primates. Adult filariae were collected from the thoracic and abdominal cavities of 38 of 44 specimens of Sapajus macrocephalus (Spix, 1823) and nine of ten specimens of Cebus albifrons (Humboldt, 1812) (Primates: Cebidae), distributed in the Yavarí-Mirín river basin and used locally for human consumption. Co-occurrence of D. caudispina and D. gracile is reported for the first time, with a prevalence of 18.5% (10 of 54 hosts examined). Our finding of D. caudispina and D. gracile in cebids from the Peruvian Amazon constitutes a new geographical record for both filariae, two new host records for D. caudispina, and the first report of D. gracile in S. macrocephalus. In addition, we provide morphometric data for D. caudispina, complementing the original description, as well as scanning electron microscopy details on the structure of the area rugosa and number of caudal papillae in males.

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Pinworms (Nematoda: Thelastomatoidea) from Insects Collected in Mississippi, USA, with description of a new species of Protrellus Cobb, 1920 from the Cockroach Ischnoptera deropeltiformis Brunner von Wattenwyl, 1865 (Blattaria: Ectobiidae)

Zootaxa ◽

10.11646/zootaxa.4531.4.7 ◽

2018 ◽

Vol 4531 (4) ◽

pp. 567

Author(s):

RAMON A. CARRENO

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

New Species ◽

New Host ◽

Large Size ◽

Opposite Pole ◽

A New Species ◽

Scanning Electron

Thelastomatoid nematodes from the hindguts of several species of insects were collected in 4 localities in Mississippi, U.S.A. Protrellus browni n. sp. is described from Ischnoptera deropeltiformis (Blattaria: Ectobiidae) using light and scanning electron microscopy. This species is distinguished on the basis of its large size as well as its large eggs having one broad end tapering toward the opposite pole and with the presence of small spines on part of the shell. Protrellus aurifluus (Chitwood, 1932) Basir, 1956 was found in Parcoblatta fulvescens (Blattaria: Ectobiidae). Four other species of blattarians sampled were negative for pinworms. Additional nematodes recovered from other hosts included Zonothrix columbianus Adamson & Buck 1989 (Thelastomatoidea: Pseudonymidae) from Tropisternus blatchleyi blatchleyi and Tropisternus collaris (Coleoptera: Hydrophilidae), Hystrignathus rigidus Leidy, 1850 and Xyo pseudohystrix Travassos & Kloss, 1958 (Thelastomatoidea: Hystrignathidae) from Odontotaenius disjunctus (Coleoptera: Passalidae). These findings include several new host and geographical records.

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Structure of the cephalic end of two little-known oxyuroid genera, Travnema Pereira, 1938 and Cosmoxynemoides Travassos, 1949, parasites of fishes, as revealed by SEM

Journal of Helminthology ◽

10.1017/s0022149x00001565 ◽

1994 ◽

Vol 68 (4) ◽

pp. 319-322 ◽

Cited By ~ 3

Author(s):

F. Moravec ◽

A. Kohn ◽

B.M.M. Fernandes

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Type Species ◽

Freshwater Fishes ◽

The Other ◽

New Host ◽

The Family ◽

Cephalic Extremity ◽

New Host Records ◽

Scanning Electron

AbstractThe cephalic end of the type species of pharyngodonid genera Travnema and Cosmoxynemoides, T. travnema Pereira, 1938 and C. aguirrei Travassos, 1949, parasites of Brazilian freshwater fishes, was studied by scanning electron microscopy. The mouth aperture of Travnema was found to be circular, surrounded by four cephalic papillae and two lateral amphids and the cuticle of the cephalic end had a conspicuous dense sculpture. On the other hand, the mouth aperture of Cosmoxynemoides was triangular, surrounded by three lip-like elevations covering the whole surface of the relatively flat cephalic extremity, each with two inner lobes separated one from another by a short groove; the lip-like elevations bore four medium-sized, kidney-shaped cephalic papillae and two minute amphids (two papillae on the dorsal elevation and one papilla and one amphid on each of two ventrolateral elevations); the cuticle of the cephalic end was smooth. Both species were noted for the absence of oral lamellae and the presence of lateral alae. Both genera are listed in the family Pharyngodonidae but Travnema (and also Hakynema), due to its morphological peculiarities, is considered to represent a distinct subfamily Travnematinae within the Pharyngodonidae. The finding of both T. travnema and C. aguirrei in the characid fish Astyanax bimaculatus lacustris represents new host records.

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Scanning electron microscopy of the tegument of adult Schistosoma curassoni, and comparison with male S. bovis and S. haematobium from Senegal

Parasitology ◽

10.1017/s0031182000081154 ◽

1986 ◽

Vol 93 (3) ◽

pp. 433-442 ◽

Cited By ~ 11

Author(s):

V. R. Southgate ◽

D. Rollinson ◽

J. Vercruysse

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Adult Male ◽

Posterior Part ◽

Male And Female ◽

Electron Microscopical ◽

Apical Area ◽

Scanning Electron

SUMMARYScanning electron microscopical studies of adult male and female Schistosoma curassoni, male S. haematobium and male S. bovis are reported. The tubercles on the dorsal and dorso-lateral surfaces of male S. bovis are devoid of spines, whereas spines are present on the tubercles of male S. curassoni and S. haematobium. Some of the tubercles of S. curassoni and S. haematobium are completely covered in spines, whereas others have a spine-free apical area. Thus, on the isolates examined from Senegal it is concluded that adult male S. bovis can be easily distinguished from S. curassoni or S. haematobium on the basis of the structure of the tubercles. The surface of female S. curassoni is smooth, with transverse striations and a pitted appearance, apart from the posterior part where anteriorly pointing spines are found.

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Glyphidops (Glyphidops) filosus (Diptera: Neriidae) revisited, with special attention to the morphology of the male and female terminalia

Papéis Avulsos de Zoologia ◽

10.11606/1807-0205/2020.60.19 ◽

2020 ◽

Vol 60 ◽

pp. e20206019

Author(s):

Isabela De Oliveira Motta ◽

José Roberto Pujol-Luz

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Light Microscopy ◽

Male Genitalia ◽

Female Genitalia ◽

Bursa Copulatrix ◽

Male And Female ◽

Brazilian Species ◽

Scanning Electron

Although a recent revision of the genus Glyphidops Enderlein covered most its known, some of the Brazilian forms were not surveyed. Here we take advantage of the excellent morphological work available in the literature and redescribe Glyphidops (Glyphidops) filosus, based on 91 specimens (43 males and 48 females) from the States of Amazonas and Goiás, including Brasília, Brazil. We also provide a study of male genitalia using scanning electron microscopy (SEM) and female genitalia and spermathecae, using light microscopy (LM). We present descriptions of the following structures in male genitalia: epandrium, hypandrium, surstyli, cerci and sections of aedeagus, and in female genitalia: oviscape, bursa copulatrix, ‘S’ bend and spermatheca. An update list of Brazilian species of Glyphidops Enderlein is also presented.

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New data on the morphology of Dichelyne hartwichi (Nematoda, Cucullanidae), a parasite of freshwater tetraodontid fishes (Tetraodon spp.) in Thailand

Acta Parasitologica ◽

10.2478/s11686-011-0069-z ◽

2011 ◽

Vol 56 (4) ◽

Cited By ~ 3

Author(s):

František Moravec ◽

Ivan Fiala ◽

Iva Dyková

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Czech Republic ◽

Intraspecific Variability ◽

Host Record ◽

New Host ◽

The Czech Republic ◽

New Host Record ◽

First Time ◽

Scanning Electron

AbstractParasitological examination of the freshwater fish Tetraodon palembangensis Bleeker (Tetraodontidae, Tetraodontiformes) (n = 19), imported along with other ornamental fishes from Thailand into the Czech Republic in October 1998, revealed the presence of male specimens of the nematode Dichelyne (Dichelyne) hartwichi Moravec, Wolter et Körting, 1999 (Cucullanidae) (prevalence 11%, intensity 1). Their detailed study using light and scanning electron microscopy (the latter used for the first time in this species) enabled the redescription of this hitherto little-known species and the recognition of considerable morphological and biometrical intraspecific variability. The finding of this species in T. palembangensis represents a new host record.

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New host and locality record of Parapharyngodon japonicus (Nematoda: Oxyuroidea) from the Egyptian changeable lizard Agama mutabilis (Agamidae): A light and scanning electron microscopy

Helminthologia ◽

10.2478/helm-2018-0041 ◽

2019 ◽

Vol 56 (1) ◽

pp. 22-29

Author(s):

K. Morsy ◽

M. Al-Kahtani ◽

A. Shati ◽

A. El-Kott ◽

R. Abdel-Gaber ◽

...

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Posterior Extremity ◽

Gastrointestinal Nematode ◽

Proximal Region ◽

The Body ◽

Similar Species ◽

Locality Record ◽

New Host ◽

Scanning Electron

SummaryParapharyngodon (Oxyurida) is a lizard gastrointestinal nematode parasite with a life cycle including lizards as main hosts. However, some species are known to parasitize anurans. In the present study, P. japonicus isolated from the large intestine of the Egyptian changeable lizard, Agama mutabilis was described and illustrated. Forty five specimens of these animals were collected from south Sinai desert, Egypt during the period from May to September 2017. After necropsy, the body was opened by a longitudinal incision from vent to throat, and the gastrointestinal tract was removed. The esophagus, stomach, small and large intestines were examined separately for helminthes. The recovered nematodes were examined by light and scanning electron microscopy. Thirty six specimens (80.0 %) were found to be naturally infected. The parasite was robust with prominent cuticular transverse annulations. Mouth surrounded by three bilobed lips, each with tiny labial papillae. Three pairs of caudal papillae were observed in male worms; 1 pair precloacal, 1 pair sublateral in cloacal opening line, 1 pair in proximal region of caudal appendage on its narrowed point. The posterior extremity beard dorsally directed caudal appendages. Females were with a conical posterior end terminated at a terminal spike. Ovaries reached esophageal isthmus but not wrapped around corpus. The parasite recorded was compared morphologically and morphometrically with the most similar species, it was found that it was most similar to P. japonicus with new host and locality records.

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Scanning Electron Microscopy of antennal sensilla of the Japanese tusser, Antheraea vamamai

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100159989 ◽

1990 ◽

Vol 48 (3) ◽

pp. 488-489

Author(s):

Hong Jian ◽

Hu Cui ◽

Ye Congyin ◽

Gao Qikang

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Electron Microscope ◽

Scanning Electron Microscope ◽

Antennal Sensilla ◽

Male And Female ◽

Sensilla Trichodea ◽

Sensillum Trichodeum ◽

Sensillum Styloconicum ◽

Scanning Electron

Antennal surface structure of the Japanese tusser, Antheraea yamamai was observed by scanning electron microscope. The antennae of male and female were bipectinate with scape, pedicel and 33--37 flagellar segments. There were two pairs of equal long branch on eacli flagellar segment of male (Fig.1), but a pair of longer and a pair of shorter on female's (Fig.2).Seven types of sensillum, namely sensillum trichodeum, sensillum cheaticum, sensillum coeloconicum, sensillum campaniformlum, sensillum styloconicum, Bohm's bristle and sensillum squamiformium wer found on the antenna both of male and female. The sensillum trichodeum could be subdivided into long and short according to the shape and surface substructure. The long sensillum trichodeum had a diameter of 4.8μm at its base. It was reratively stright and slightly curved at the tip (Fig.3). The short sensillum trichodeum was 2.5--3.6 μm in diameter at the base. It was shorter, strongly bend down near its base and run parallel with the surface of the antenna (Fig.4). The surface of long and short sensilla trichodea were covered with annular ridges (Fig.5).

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