New Insights on the Male and Female Reproductive Organs of <i>Centrorhynchus globocaudatus</i> (Acanthocephala), Intestinal Parasite of Birds of Prey
Acanthocephalans are dioecious parasites that gain sexual maturity in the alimentary canal of their definitive hosts (gnathostome vertebrates). This initial survey by light and transmission electron microscopy was conducted on the functional organization of the ovarian balls and uterine bell in matu...
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MDPI AG
2024-02-01
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| Series: | Cells |
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| Online Access: | https://www.mdpi.com/2073-4409/13/4/356 |
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| author | Bahram Sayyaf Dezfuli Flavio Pironi Emanuele Rossetti Holger Herlyn |
| author_facet | Bahram Sayyaf Dezfuli Flavio Pironi Emanuele Rossetti Holger Herlyn |
| author_sort | Bahram Sayyaf Dezfuli |
| collection | DOAJ |
| description | Acanthocephalans are dioecious parasites that gain sexual maturity in the alimentary canal of their definitive hosts (gnathostome vertebrates). This initial survey by light and transmission electron microscopy was conducted on the functional organization of the ovarian balls and uterine bell in mature females and on Saefftigen’s pouch and the copulatory bursa in males. We studied these structures via the example of <i>Centrorhynchus globocaudatus</i> (Palaeacanthocephala) in <i>Falco tinnunculus</i> and <i>Buteo buteo</i>, from the Province of Ferrara (Northern Italy). Our study confirms that the ovarian balls have surface microvilli and consist of a multinucleate supporting syncytium and a cellular region with oogonial syncytium, single germ cells, zygotes, and shelled eggs. Germ cells are embedded in the supporting syncytium. The ultrastructural features of these components and data on fertilization, shell formation, and release from the ovarian ball, alongside insights into the likely egg sorting function of the uterine bell, are provided. We also present light and electron microscopy observations of Saefftigen’s pouch and a suggestion regarding its hydrostatic functioning in the eversion of the copulatory bursa. |
| first_indexed | 2024-03-07T22:37:26Z |
| format | Article |
| id | doaj.art-303d55addc8444678555e5c0eff768e7 |
| institution | Directory Open Access Journal |
| issn | 2073-4409 |
| language | English |
| last_indexed | 2024-03-07T22:37:26Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Cells |
| spelling | doaj.art-303d55addc8444678555e5c0eff768e72024-02-23T15:11:59ZengMDPI AGCells2073-44092024-02-0113435610.3390/cells13040356New Insights on the Male and Female Reproductive Organs of <i>Centrorhynchus globocaudatus</i> (Acanthocephala), Intestinal Parasite of Birds of PreyBahram Sayyaf Dezfuli0Flavio Pironi1Emanuele Rossetti2Holger Herlyn3Department of Life Sciences & Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, ItalyDepartment of Life Sciences & Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, ItalyDepartment of Life Sciences & Biotechnology, University of Ferrara, St. Borsari 46, 44121 Ferrara, ItalyInstitute of Organismic and Molecular Evolution, Anthropology, Johannes Gutenberg University Mainz, 55122 Mainz, GermanyAcanthocephalans are dioecious parasites that gain sexual maturity in the alimentary canal of their definitive hosts (gnathostome vertebrates). This initial survey by light and transmission electron microscopy was conducted on the functional organization of the ovarian balls and uterine bell in mature females and on Saefftigen’s pouch and the copulatory bursa in males. We studied these structures via the example of <i>Centrorhynchus globocaudatus</i> (Palaeacanthocephala) in <i>Falco tinnunculus</i> and <i>Buteo buteo</i>, from the Province of Ferrara (Northern Italy). Our study confirms that the ovarian balls have surface microvilli and consist of a multinucleate supporting syncytium and a cellular region with oogonial syncytium, single germ cells, zygotes, and shelled eggs. Germ cells are embedded in the supporting syncytium. The ultrastructural features of these components and data on fertilization, shell formation, and release from the ovarian ball, alongside insights into the likely egg sorting function of the uterine bell, are provided. We also present light and electron microscopy observations of Saefftigen’s pouch and a suggestion regarding its hydrostatic functioning in the eversion of the copulatory bursa.https://www.mdpi.com/2073-4409/13/4/356acanthocephalanovarian ballultrastructureuterine bellmale Saefftigen’s pouch |
| spellingShingle | Bahram Sayyaf Dezfuli Flavio Pironi Emanuele Rossetti Holger Herlyn New Insights on the Male and Female Reproductive Organs of <i>Centrorhynchus globocaudatus</i> (Acanthocephala), Intestinal Parasite of Birds of Prey Cells acanthocephalan ovarian ball ultrastructure uterine bell male Saefftigen’s pouch |
| title | New Insights on the Male and Female Reproductive Organs of <i>Centrorhynchus globocaudatus</i> (Acanthocephala), Intestinal Parasite of Birds of Prey |
| title_full | New Insights on the Male and Female Reproductive Organs of <i>Centrorhynchus globocaudatus</i> (Acanthocephala), Intestinal Parasite of Birds of Prey |
| title_fullStr | New Insights on the Male and Female Reproductive Organs of <i>Centrorhynchus globocaudatus</i> (Acanthocephala), Intestinal Parasite of Birds of Prey |
| title_full_unstemmed | New Insights on the Male and Female Reproductive Organs of <i>Centrorhynchus globocaudatus</i> (Acanthocephala), Intestinal Parasite of Birds of Prey |
| title_short | New Insights on the Male and Female Reproductive Organs of <i>Centrorhynchus globocaudatus</i> (Acanthocephala), Intestinal Parasite of Birds of Prey |
| title_sort | new insights on the male and female reproductive organs of i centrorhynchus globocaudatus i acanthocephala intestinal parasite of birds of prey |
| topic | acanthocephalan ovarian ball ultrastructure uterine bell male Saefftigen’s pouch |
| url | https://www.mdpi.com/2073-4409/13/4/356 |
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