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Roy S, Saha SK, Ghorai N. The fine structure of gametogenesis and somatic cells in the ovotestis of the terrestrial pulmonate slug, Laevicaulis alte (Férussac, 1822). MOLLUSCAN RESEARCH 2019. [DOI: 10.1080/13235818.2019.1634307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Soumen Roy
- Department of Zoology, West Bengal State University, Kolkata, India
| | - Samir Kumar Saha
- Department of Zoology, West Bengal State University, Kolkata, India
| | - Narayan Ghorai
- Department of Zoology, West Bengal State University, Kolkata, India
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Yurchenko OV, Kalachev AV. Morphology of nutrient storage cells in the gonadal area of the Pacific oyster, Crassostrea gigas (Thunberg, 1793). Tissue Cell 2019; 56:7-13. [DOI: 10.1016/j.tice.2018.11.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/01/2018] [Accepted: 11/23/2018] [Indexed: 11/25/2022]
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Roy S, Chaki KK, Nag TC, Misra KK. Ultrastructure of gametogenesis in the ovotestis of an estuarine pulmonate slug, Onchidium tigrinum (Stoliczka, 1869). MOLLUSCAN RESEARCH 2018. [DOI: 10.1080/13235818.2018.1434605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Soumen Roy
- Department of Zoology, City College, Kolkata, India
| | | | - Tapas Chandra Nag
- Department of Anatomy, All India Institute of Medical Sciences (AIIMS), New Delhi, India
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Roy S, Chaki KK, Nag TC, Misra KK. Ultrastructure of ovotestis of young and adult pulmonate mollusk, Macrochlamys indica Benson, 1832. J Microsc Ultrastruct 2016; 4:184-194. [PMID: 30023226 PMCID: PMC6014257 DOI: 10.1016/j.jmau.2016.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 02/27/2016] [Accepted: 03/05/2016] [Indexed: 11/22/2022] Open
Abstract
Macrochlamys indica is a hermaphrodite terrestrial pulmonate mollusk. Transmission electron microscope studies were done on the ovotestis of young and adult (older) M. indica which are elaborated in this paper. The ovotestis contains numerous lobes each of which contains many ovoid shaped acini which are occupied by stages of spermatogenesis and a single oocyte. In younger snails, the acini contain stages of developing spermatogenesis, whereas each acinus of older snails is composed of single large oocyte and few stags of spermatogenesis. The number of Sertoli cells is high in the acini of younger snails than in older snails. Details of the cellular organization of the Sertoli cell are described. Some long thin threads extend from the acinar boundary to acinar lumen. The anterior end of these threads is either free or directly connected to the developing cells of spermatogenesis. There are two types of cells in the interacinar space of the ovotestis in both younger and older snails. One cell is small oval interstitial cell and other is thin elongated periacinar cell. The acinar boundary contains secretory cells with deeply stained nucleus. In the acinus of older snails, the Sertoli cells do not form any barrier between oocyte and spermatogenic cells. Functions of the periacinar cell and interacinar cell are discussed. It is found that the spermatogenesis is highly active in younger snails with single dormant oocyte while process of oogenesis predominates in the older snails. The reproductive strategy of this pulmonate species thus depends on the individual's body size and their maturity.
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Affiliation(s)
- Soumen Roy
- Department of Zoology, City College, Kolkata, India
| | | | - Tapas Chandra Nag
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
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Kalachev AV. An ultrastructural study of testes permeability in sea urchins, Strongylocentrotus intermedius. Micron 2014; 68:66-69. [PMID: 25310892 DOI: 10.1016/j.micron.2014.09.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 09/18/2014] [Accepted: 09/19/2014] [Indexed: 12/28/2022]
Abstract
Permeability of testes in sea urchins, Strongylocentrotus intermedius, was investigated by using an electron-opaque tracer, lanthanum nitrate. This tracer is able to enter the basal compartment of germinative epithelium, where developing germ cells are located. However, its ability to penetrate the gonadal lumen was reduced. An incomplete permeability barrier between the basal compartment and the gonadal lumen is supposed to exist in testes of S. intermedius.
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Affiliation(s)
- Alexander V Kalachev
- A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences, 17 Palchevskogo str., Vladivostok 690041, Russia.
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França LR, Auharek SA, Hess RA, Dufour JM, Hinton BT. Blood-Tissue Barriers. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2013. [DOI: 10.1007/978-1-4614-4711-5_12] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Riesgo A, Maldonado M, Durfort M. Occurrence of somatic cells within the spermatic cysts of demosponges: a discussion of their role. Tissue Cell 2008; 40:387-96. [PMID: 18501394 DOI: 10.1016/j.tice.2008.03.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2008] [Accepted: 03/31/2008] [Indexed: 11/28/2022]
Abstract
During ultrastructural studies on the spermatogenesis of two demosponges, Raspaciona aculeata and Petrosia ficiformis, somatic cells were detected within their spermatic cysts. In R. aculeata large, amoeboid somatic cells, presumably derived from follicle cells, were found inside cysts filled with secondary spermatocytes. These cells were actively phagocytosing spermatocytes. Such phagocytosis could be directed to eliminate aberrant spermatogenic cells, maintain appropriate cell number within the cysts, or recapture energetic reserves originally allocated to the reproductive process via phagocytosis of spermatocytes. In P. ficiformis, somatic round cells were observed only after the spawning event, phagocytosing unspawned sperm in nearly emptied spermatic cysts. Unlike in R. aculeata, these cells were more similar to archaeocytes (common cells of the demosponge mesohyl with phagocytic activity) than to follicle cells. Phagocytosis of spermatogenic cells and unspawned spermatozoa by somatic cells from the wall of the testes is a well-known process in vertebrates and many invertebrates. Occurrence of somatic cells in the spermatic cysts of sponges, whose function appears to be partially analogous to that of Sertoli cells, reveals that sponges possess cellular mechanisms to regulate testis functioning that are equivalent to those in higher metazoans.
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Affiliation(s)
- A Riesgo
- Department of Marine Ecology, Centro de Estudios Avanzados de Blanes (CSIC), Acceso Cala St. Francesc 14, Blanes 17300, Girona, Spain.
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Gullo BS. Histologia del sistema reproductor masculino de Helobdella hyalina (Hirudinea, Glossiphoniidae) en Argentina. IHERINGIA. SERIE ZOOLOGIA 2004. [DOI: 10.1590/s0073-47212004000100002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Guraya SS. The comparative cell biology of accessory somatic (or Sertoli) cells in the animal testis. INTERNATIONAL REVIEW OF CYTOLOGY 1995; 160:163-220. [PMID: 7558683 DOI: 10.1016/s0074-7696(08)61555-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A comparative account is given of recent advances in the cell biology of testicular accessory somatic (or Sertoli) cells in mammals, nonmammalian vertebrates, and invertebrates by comparing and contrasting their structure and function. Their structure is discussed in relation to the nucleus, cytoplasmic organelles, and inclusions (lipids, the cytoskeleton, junctional complexes, and blood-testis barrier, which show great diversity and a variable testicular architecture), and mode of spermatogenesis. A very limited somatic cell-germinal association or its complete absence is observed in some groups of invertebrates. Wherever the somatic accessory cells are present, their comparative functions are discussed in relation to (1) mechanical support and nutrition; (2) translocation of germ cells; (3) paracrine regulation and a combination of male germ cell proliferation and differentiation by secretion of regulatory proteins, including peptide growth factors and hormones; (4) phagocytosis; (5) steroid hormone synthesis and metabolism; and (6) spermiation. Comparative cellular and molecular aspects of Sertoli cell-germ cell and peritubular cell interactions and the regulatory (hormonal) mechanisms involved as well as gaps in our knowledge about the molecular aspects of these interactions are emphasized for a better understanding of diversity in the patterns and regulation of spermatogenesis in animals.
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Affiliation(s)
- S S Guraya
- Department of Zoology, Punjab Agricultural University, Ludhiana, India
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Bergey MA, Crowder RJ, Shinn GL. Morphology of the male system and spermatophores of the arrowworm Ferosagitta hispida (Chaetognatha). J Morphol 1994; 221:321-341. [PMID: 29865409 DOI: 10.1002/jmor.1052210307] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Transmission electron microscopy reveals that the somatic testicular tissues and sperm ducts are elaborations of the epithelial lining of the tail coelom. The testes consist of closely packed spermatogonia embedded between specialized lateral field cells. These cells contain few organelles and appear to function mainly as a compartment boundary. Masses of spermatogenic cells are released into the tail coelom from the anterior end of the testes. The sperm ducts, lined by simple cuboidal ciliated epithelium, collect mature spermatozoa from the tail coelom and convey them to the blindly ending seminal vesicles. The sperm ducts also modify coelomic fluid entering them along with the spermatozoa. The seminal vesicles consist of a simple glandular lining epithelium embedded in the stratified epidermis. Secretions of the lining epithelium surround the enclosed sperm mass and correspond in position to a noncellular spermatophore coat visible by light microscopy around released sperm masses. Spermatophores leave the seminal vesicles through a temporary split that forms between microfilament-containing suture cells. Maturation of spermatozoa and filling of the seminal vesicles is cyclical, occurring late each day. © 1994 Wiley-Liss, Inc.
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Affiliation(s)
- M Anne Bergey
- Division of Science, Northeast Missouri State University, Kirksville, Missouri 63501
| | - Robert J Crowder
- Division of Science, Northeast Missouri State University, Kirksville, Missouri 63501
| | - George L Shinn
- Division of Science, Northeast Missouri State University, Kirksville, Missouri 63501
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Hinsch GW. Junctional complexes between the Sertoli cells in the testis of the crayfish,Procambarus paeninsulanus. Tissue Cell 1992; 24:379-85. [DOI: 10.1016/0040-8166(92)90054-b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/1992] [Indexed: 10/27/2022]
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Abraham M. The male germ cell protective barrier along phylogenesis. INTERNATIONAL REVIEW OF CYTOLOGY 1991; 130:111-90. [PMID: 1778728 DOI: 10.1016/s0074-7696(08)61503-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- M Abraham
- Department of Zoology, Hebrew University of Jerusalem, Israel
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Hou ST, Maxwell WL. Desmosome-like junctions between sertoli-sertoli and sertoli-germ cells in the ovotestis of Arion hortensis (Mollusca: Pulmonata). J Morphol 1990; 205:325-333. [PMID: 29865756 DOI: 10.1002/jmor.1052050307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S T Hou
- Department of Anatomy, University of Glasgow, Glasgow, G128QQ, Scotland
| | - W L Maxwell
- Department of Anatomy, University of Glasgow, Glasgow, G128QQ, Scotland
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Holland ND, Holland LZ. The Fine Structure of the Testis of a Lancelet (=Amphioxus),Branchiostoma floridae(Phylum Chordata: Subphylum Cephalochordata= Acrania). ACTA ZOOL-STOCKHOLM 1989. [DOI: 10.1111/j.1463-6395.1989.tb00934.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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NOURY-SRAIRI NEZHA, JUSTINE JEANLOU, EUZET LOUIS. Ultrastructure comparee de la spermiogenese et du spermatozoide de trois especes de Paravortex (Rhabdocoela, "Dalyellioida", Graffillidae), Turbellaries parasites intestinaux de Mollusques. ZOOL SCR 1989. [DOI: 10.1111/j.1463-6409.1989.tb00442.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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O'Donovan P, Abraham M. Somatic tissue-male germ cell barrier inHydra viridis (hydrozoa, coelenterata). J Morphol 1988; 198:179-188. [DOI: 10.1002/jmor.1051980205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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