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Xavier VB, Oliveira-Menezes A, Adnet FAO, Sant'Anna V, Souza W, DaMatta RA, Pinheiro J, Brandolini SVPB. Morphology and morphometry of Paratanaisia bragai () Freitas, 1959 (Digenea, Eucotylidae) through light and scanning electron microscopy. BRAZ J BIOL 2023; 83:e271401. [PMID: 37255173 DOI: 10.1590/1519-6984.271401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 04/20/2023] [Indexed: 06/01/2023] Open
Abstract
Paratanaisia bragai is a digenetic trematode that reaches sexual maturity in the kidney collecting ducts of domestic and wild birds, while the snails Subulina octona and Leptinaria unilamellata serve as its intermediate hosts in Brazil. The present study analyzed the morphology and morphometry of P. bragai. Adult specimens of the parasite were collected from naturally infected Columba livia kidneys, fixed and prepared for observation via bright field and differential interference contrast light microscopy and scanning electron microscopy. The parasite has an elongated and flattened body, with a subterminal oral sucker located at the anterior end of the body, as observed by all techniques used. Staining the parasite with hematoxylin-eosin enabled observation of the pharynx, located posteriorly to the oral sucker, the vitelline glands, which are extra-cecal and extend anteriorly to the pre-ovarian region and later to the median region of the body, and intestinal caeca parallel to the vitelline glands. The presence and functionality of the acetabulum are controversial points in the literature, but it was observed in all specimens analyzed by scanning electron microscopy, with a major diameter of 38.36 ± 6.96 (28.77 - 45.39) and minor diameter of 31.59 ± 7.04 (21.75 - 38.16). Close to the acetabulum, scales were observed in the integument of the parasite. Scales with (1 - 5) blade divisions were identified. In the genital pore, it was possible to see the everted cirrus with rosette shape. The excretory pore (first morphometric record) is dorsal and subterminal, with major diameter of 12.27 ± 9.16 (5.79 - 18.75) and minor diameter of 3.95 ± 1.49 (2.89 - 5.00).
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Affiliation(s)
- V B Xavier
- Universidade Federal Rural do Rio de Janeiro - UFRRJ, Instituto de Ciências Biológicas e da Saúde, Departamento de Biologia Animal, Laboratório de Malacologia e Parasitologia, Seropédica, RJ, Brasil
- Universidade Federal Rural do Rio de Janeiro - UFRRJ, Instituto de Veterinárias, Departamento de Parasitologia Animal, Programa de Pós-Graduação em Ciências Veterinárias, Seropédica, RJ, Brasil
| | | | - F A O Adnet
- Universidade Federal do Rio de Janeiro - UFRJ, Instituto de Biofísica Carlos Chagas Filho, Centro de Ciências da Saúde, Laboratório de Ultraestrutura Celular Hertha Meyer - LUCHM, Programa de Biologia Celular e Parasitologia, Rio de Janeiro, RJ, Brasil
| | - V Sant'Anna
- Universidade Federal do Rio de Janeiro - UFRJ, Instituto de Biofísica Carlos Chagas Filho, Centro de Ciências da Saúde, Laboratório de Ultraestrutura Celular Hertha Meyer - LUCHM, Programa de Biologia Celular e Parasitologia, Rio de Janeiro, RJ, Brasil
| | - W Souza
- Universidade Federal do Rio de Janeiro - UFRJ, Instituto de Biofísica Carlos Chagas Filho, Centro de Ciências da Saúde, Laboratório de Ultraestrutura Celular Hertha Meyer - LUCHM, Programa de Biologia Celular e Parasitologia, Rio de Janeiro, RJ, Brasil
| | - R A DaMatta
- Universidade Estadual do Norte Fluminense Darcy Ribeiro - UENF, Centro de Biociências e Biotecnologia - CBB, Laboratório de Biologia Celular e Tecidual - LCBT, Goytacazes, RJ, Brasil
| | - J Pinheiro
- Universidade Federal Rural do Rio de Janeiro - UFRRJ, Instituto de Veterinárias, Departamento de Parasitologia Animal, Programa de Pós-Graduação em Ciências Veterinárias, Seropédica, RJ, Brasil
- Universidade Federal Rural do Rio de Janeiro - UFRRJ, Instituto de Ciências Biológicas e da Saúde, Departamento de Ciências Fisiológicas, Laboratório de Fisiologia das Relações Parasitárias - LFRP, Seropédica, RJ, Brasil
| | - S V P B Brandolini
- Universidade Federal Rural do Rio de Janeiro - UFRRJ, Instituto de Ciências Biológicas e da Saúde, Departamento de Biologia Animal, Laboratório de Malacologia e Parasitologia, Seropédica, RJ, Brasil
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Gavarane I, Kirilova E, Rubeniņa I, Mežaraupe L, Osipovs S, Deksne G, Pučkins A, Kokina I, Bulanovs A, Kirjušina M. A Simple and Rapid Staining Technique for Sex Determination of Trichinella Larvae Parasites by Confocal Laser Scanning Microscopy. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2019; 25:1491-1497. [PMID: 31656214 DOI: 10.1017/s1431927619015046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The roundworms of Trichinella genus are worldwide distributed and their prevalence in nature is high. Trichinella genus parasites are the causative agents of foodborne zoonosis trichinellosis. The main prevention and control of the infection are meat inspection by the magnetic stirrer method for the detection of Trichinella larvae in muscle samples. The treatment can be effective if the parasite is discovered early in the intestinal phase. Once the Trichinella larva has reached the muscle tissue, the parasite remains therein and there is no treatment for this life cycle stage. The Trichinella species is dioecious with separate male and female individuals. The developed staining technique that uses confocal laser scanning microscopy (CLSM) displays sufficient results for Trichinella larvae examination and this protocol is applicable to study the internal and external structures and for the sex determination of T. britovi and T. spiralis larvae samples. In the present study, a luminescent derivative was synthesized and used for staining of T. spiralis and T. britovi larvae samples for the examination by CLSM. Various fixatives, such as AFA, 70% ethanol, and Bouin's and Carnoy's solutions were tested for sample preparation. The synthesized luminescent compound demonstrates best visualization results for samples fixed in Bouin's fixative.
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Affiliation(s)
- Inese Gavarane
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
| | - Elena Kirilova
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
| | - Ilze Rubeniņa
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
| | - Ligita Mežaraupe
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
| | - Sergejs Osipovs
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
| | - Gunita Deksne
- Institute of Food Safety, Animal Health and Environment BIOR, Riga LV-1076, Latvia
- Faculty of Biology, University of Latvia, Riga LV-1004, Latvia
| | - Aleksandrs Pučkins
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
| | - Inese Kokina
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
| | - Andrejs Bulanovs
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
| | - Muza Kirjušina
- Institute of Life Sciences and Technology, Daugavpils University, Daugavpils LV-5401, Latvia
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Marques JDS, Rocha BM, Manso PPDA, D'Ávila S. New insights on the morphology of a digenean parasite (Digenea: Brachylaimidae,Brachylaima mazzantii(Travassos, 1927)) using confocal laser scanning microscopy. ZOOSYSTEMA 2017. [DOI: 10.5252/z2017n4a1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Juçara de Souza Marques
- Malacological Museum Professor Maury Pinto de Oliveira, Federal University of Juiz de Fora, Minas Gerais (Brazil)
| | - Bárbara Marum Rocha
- Malacological Museum Professor Maury Pinto de Oliveira, Federal University of Juiz de Fora, Minas Gerais (Brazil)
| | | | - Sthefane D'Ávila
- Malacological Museum Professor Maury Pinto de Oliveira and Departament of Zoology, Federal University of Juiz de Fora, Minas Gerais (Brazil)
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Krupenko DY, Dobrovolskij AA. Somatic musculature in trematode hermaphroditic generation. BMC Evol Biol 2015; 15:189. [PMID: 26373845 PMCID: PMC4571110 DOI: 10.1186/s12862-015-0468-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 08/26/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The somatic musculature in trematode hermaphroditic generation (cercariae, metacercariae and adult) is presumed to comprise uniform layers of circular, longitudinal and diagonal muscle fibers of the body wall, and internal dorsoventral muscle fibers. Meanwhile, specific data are few, and there has been no analysis taking the trunk axial differentiation and regionalization into account. Yet presence of the ventral sucker (= acetabulum) morphologically divides the digenean trunk into two regions: preacetabular and postacetabular. The functional differentiation of these two regions is already evident in the nervous system organization, and the goal of our research was to investigate the somatic musculature from the same point of view. RESULTS Somatic musculature of ten trematode species was studied with use of fluorescent-labelled phalloidin and confocal microscopy. The body wall of examined species included three main muscle layers (of circular, longitudinal and diagonal fibers), and most of the species had them distinctly better developed in the preacetabuler region. In majority of the species several (up to seven) additional groups of muscle fibers were found within the body wall. Among them the anterioradial, posterioradial, anteriolateral muscle fibers, and U-shaped muscle sets were most abundant. These groups were located on the ventral surface, and associated with the ventral sucker. The additional internal musculature was quite diverse as well, and included up to twelve separate groups of muscle fibers or bundles in one species. The most dense additional bundles were found in the preacetabular region and were connected with the suckers. CONCLUSIONS Previously unknown additional somatic musculature probably provides the diverse movements of the preacetabular region, ventral sucker, and oral sucker (or anterior organ). Several additional muscle groups of the body wall (anterioradial, posterioradial, anteriolateral fibers and U-shaped sets) are proposed to be included into the musculature ground pattern of trematode hermaphroditic generation. This pattern is thought to be determined by the primary trunk morphofunctional differentiation into the preacetabular and the postacetabular regions.
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Affiliation(s)
- Darya Y Krupenko
- Department of Invertebrate Zoology, Saint Petersburg State University, Universitetskaya nab. 7/9, 199034, St. Petersburg, Russia.
| | - Andrej A Dobrovolskij
- Department of Invertebrate Zoology, Saint Petersburg State University, Universitetskaya nab. 7/9, 199034, St. Petersburg, Russia.
- Department of Zoology, Herzen State Pedagogical University, St. Petersburg, Russia.
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Peoples RC, Fried B. Form and function in the digenea. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 766:3-20. [PMID: 24903361 DOI: 10.1007/978-1-4939-0915-5_1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Robert C Peoples
- Schistosomiasis Lab, Biomedical Research Institute, 12111 Parklawn Drive, Rockville, MD, 20851, USA,
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