Ultrastructure of Spermatogenesis of Atriaster heterodus (Platyhelminthes, Monogenea, Polyopisthocotylea)
The development of spermatozoa in the Polyopisthocotylea Atriaster heterodus was studied by transmission electron microscopy. Spermatogonia were undifferentiated, with irregular nuclei and little cytoplasm. Primary spermatocytes had sparse chromatin and typical synaptonemal complexes. The nuclear ch...
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| Veröffentlicht in: | The Journal of parasitology 1997-12, Vol.83 (6), p.1007-1014 |
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| creator | Santos, Claudia P. Lanfredi, Reinalda M. Souto-Padrón, Thais |
| description | The development of spermatozoa in the Polyopisthocotylea Atriaster heterodus was studied by transmission electron microscopy. Spermatogonia were undifferentiated, with irregular nuclei and little cytoplasm. Primary spermatocytes had sparse chromatin and typical synaptonemal complexes. The nuclear chromatin of secondary spermatocytes was in patches along the nuclear envelope and throughout the nucleoplasm. The complete process of fusion of the early spermatids to a common cytoplasmic mass forming a rosette was elucidated. Nuclei migrated to the center of the mass and changed from round to lamellar or tubular in shape. At the borders of the common cytoplasmic mass, the irregular zones of differentiation had microtubules, mitochondria, nuclei, centrioles, and intercentriolar bodies that give rise to 2 flagella. The spermatozoa presented a continuous row of cortical microtubules surrounding 2 parallels axonemes of the 9+1 type. |
| doi_str_mv | 10.2307/3284353 |
| format | Article |
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Spermatogonia were undifferentiated, with irregular nuclei and little cytoplasm. Primary spermatocytes had sparse chromatin and typical synaptonemal complexes. The nuclear chromatin of secondary spermatocytes was in patches along the nuclear envelope and throughout the nucleoplasm. The complete process of fusion of the early spermatids to a common cytoplasmic mass forming a rosette was elucidated. Nuclei migrated to the center of the mass and changed from round to lamellar or tubular in shape. At the borders of the common cytoplasmic mass, the irregular zones of differentiation had microtubules, mitochondria, nuclei, centrioles, and intercentriolar bodies that give rise to 2 flagella. The spermatozoa presented a continuous row of cortical microtubules surrounding 2 parallels axonemes of the 9+1 type.</description><identifier>ISSN: 0022-3395</identifier><identifier>EISSN: 1937-2345</identifier><identifier>DOI: 10.2307/3284353</identifier><identifier>PMID: 9406770</identifier><identifier>CODEN: JOPAA2</identifier><language>eng</language><publisher>Lawrence, KS: American Society of Parasitologists</publisher><subject>Animals ; Atriaster heterodus ; Biological and medical sciences ; Cell Differentiation ; Chromatin ; Cytoplasm ; Cytoplasm - ultrastructure ; Development ; Fundamental and applied biological sciences. Psychology ; Invertebrates ; Male ; Marine ; Microtubules ; Microtubules - ultrastructure ; Mitochondria ; Monogenea ; Morphology. Histology. Cytology ; Nemathelminthia. Plathelmintha ; Parasitology ; Perciformes - parasitology ; Ribosomes ; Sperm Tail - ultrastructure ; Spermatids ; Spermatids - ultrastructure ; Spermatocytes ; Spermatogenesis ; Spermatogonia - ultrastructure ; Spermatozoa ; Spermatozoa - growth & development ; Spermatozoa - ultrastructure ; Testis - ultrastructure ; Trematoda - growth & development ; Trematoda - physiology ; Trematoda - ultrastructure</subject><ispartof>The Journal of parasitology, 1997-12, Vol.83 (6), p.1007-1014</ispartof><rights>Copyright 1997 American Society of Parasitologists</rights><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c365t-db55d4f499e740d62ad3ae25bc88aa1fd4c8f607b3db50c0c20a907f1a920093</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/3284353$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/3284353$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2094463$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9406770$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Santos, Claudia P.</creatorcontrib><creatorcontrib>Lanfredi, Reinalda M.</creatorcontrib><creatorcontrib>Souto-Padrón, Thais</creatorcontrib><title>Ultrastructure of Spermatogenesis of Atriaster heterodus (Platyhelminthes, Monogenea, Polyopisthocotylea)</title><title>The Journal of parasitology</title><addtitle>J Parasitol</addtitle><description>The development of spermatozoa in the Polyopisthocotylea Atriaster heterodus was studied by transmission electron microscopy. Spermatogonia were undifferentiated, with irregular nuclei and little cytoplasm. Primary spermatocytes had sparse chromatin and typical synaptonemal complexes. The nuclear chromatin of secondary spermatocytes was in patches along the nuclear envelope and throughout the nucleoplasm. The complete process of fusion of the early spermatids to a common cytoplasmic mass forming a rosette was elucidated. Nuclei migrated to the center of the mass and changed from round to lamellar or tubular in shape. At the borders of the common cytoplasmic mass, the irregular zones of differentiation had microtubules, mitochondria, nuclei, centrioles, and intercentriolar bodies that give rise to 2 flagella. The spermatozoa presented a continuous row of cortical microtubules surrounding 2 parallels axonemes of the 9+1 type.</description><subject>Animals</subject><subject>Atriaster heterodus</subject><subject>Biological and medical sciences</subject><subject>Cell Differentiation</subject><subject>Chromatin</subject><subject>Cytoplasm</subject><subject>Cytoplasm - ultrastructure</subject><subject>Development</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Invertebrates</subject><subject>Male</subject><subject>Marine</subject><subject>Microtubules</subject><subject>Microtubules - ultrastructure</subject><subject>Mitochondria</subject><subject>Monogenea</subject><subject>Morphology. Histology. Cytology</subject><subject>Nemathelminthia. Plathelmintha</subject><subject>Parasitology</subject><subject>Perciformes - parasitology</subject><subject>Ribosomes</subject><subject>Sperm Tail - ultrastructure</subject><subject>Spermatids</subject><subject>Spermatids - ultrastructure</subject><subject>Spermatocytes</subject><subject>Spermatogenesis</subject><subject>Spermatogonia - ultrastructure</subject><subject>Spermatozoa</subject><subject>Spermatozoa - growth & development</subject><subject>Spermatozoa - ultrastructure</subject><subject>Testis - ultrastructure</subject><subject>Trematoda - growth & development</subject><subject>Trematoda - physiology</subject><subject>Trematoda - ultrastructure</subject><issn>0022-3395</issn><issn>1937-2345</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0FFL3TAUB_AgE3fnxE8w6MPYJtjtNEmb5lFkU0FRmHsu56an3kra3OWkD_fbr87inoYPOYFzfjmBvxDHBXyVCsw3JWutSrUnVoVVJpdKl2_ECkDKXClbvhXvmB8BoJzPgTiwGipjYCX6Xz5F5BQnl6ZIWeiyn1uKA6bwQCNxz0-tsxT7GVHMNjTX0E6cfbnzmHYb8kM_pg3xaXYTxr-P8DS7C34Xtj2nTXAh7TzhyXux36FnOlruQ3H_4_v9-WV-fXtxdX52nTtVlSlv12XZ6k5bS0ZDW0lsFZIs166uEYuu1a7uKjBrNUtw4CSgBdMVaCWAVYfi0_PabQy_J-LUDD078h5HChM3xmpT1Va-CotKFtLUxQw_P0MXA3OkrtnGfsC4awponsJvlvBn-WFZOa0Hal_ckvY8_7jMkR36LuLoen5hEqzWlfrHHjmF-N_f_gCv3Jgt</recordid><startdate>19971201</startdate><enddate>19971201</enddate><creator>Santos, Claudia P.</creator><creator>Lanfredi, Reinalda M.</creator><creator>Souto-Padrón, Thais</creator><general>American Society of Parasitologists</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope><scope>7X8</scope></search><sort><creationdate>19971201</creationdate><title>Ultrastructure of Spermatogenesis of Atriaster heterodus (Platyhelminthes, Monogenea, Polyopisthocotylea)</title><author>Santos, Claudia P. ; Lanfredi, Reinalda M. ; Souto-Padrón, Thais</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c365t-db55d4f499e740d62ad3ae25bc88aa1fd4c8f607b3db50c0c20a907f1a920093</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Animals</topic><topic>Atriaster heterodus</topic><topic>Biological and medical sciences</topic><topic>Cell Differentiation</topic><topic>Chromatin</topic><topic>Cytoplasm</topic><topic>Cytoplasm - ultrastructure</topic><topic>Development</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Invertebrates</topic><topic>Male</topic><topic>Marine</topic><topic>Microtubules</topic><topic>Microtubules - ultrastructure</topic><topic>Mitochondria</topic><topic>Monogenea</topic><topic>Morphology. Histology. Cytology</topic><topic>Nemathelminthia. Plathelmintha</topic><topic>Parasitology</topic><topic>Perciformes - parasitology</topic><topic>Ribosomes</topic><topic>Sperm Tail - ultrastructure</topic><topic>Spermatids</topic><topic>Spermatids - ultrastructure</topic><topic>Spermatocytes</topic><topic>Spermatogenesis</topic><topic>Spermatogonia - ultrastructure</topic><topic>Spermatozoa</topic><topic>Spermatozoa - growth & development</topic><topic>Spermatozoa - ultrastructure</topic><topic>Testis - ultrastructure</topic><topic>Trematoda - growth & development</topic><topic>Trematoda - physiology</topic><topic>Trematoda - ultrastructure</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Santos, Claudia P.</creatorcontrib><creatorcontrib>Lanfredi, Reinalda M.</creatorcontrib><creatorcontrib>Souto-Padrón, Thais</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of parasitology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Santos, Claudia P.</au><au>Lanfredi, Reinalda M.</au><au>Souto-Padrón, Thais</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ultrastructure of Spermatogenesis of Atriaster heterodus (Platyhelminthes, Monogenea, Polyopisthocotylea)</atitle><jtitle>The Journal of parasitology</jtitle><addtitle>J Parasitol</addtitle><date>1997-12-01</date><risdate>1997</risdate><volume>83</volume><issue>6</issue><spage>1007</spage><epage>1014</epage><pages>1007-1014</pages><issn>0022-3395</issn><eissn>1937-2345</eissn><coden>JOPAA2</coden><abstract>The development of spermatozoa in the Polyopisthocotylea Atriaster heterodus was studied by transmission electron microscopy. Spermatogonia were undifferentiated, with irregular nuclei and little cytoplasm. Primary spermatocytes had sparse chromatin and typical synaptonemal complexes. The nuclear chromatin of secondary spermatocytes was in patches along the nuclear envelope and throughout the nucleoplasm. The complete process of fusion of the early spermatids to a common cytoplasmic mass forming a rosette was elucidated. Nuclei migrated to the center of the mass and changed from round to lamellar or tubular in shape. At the borders of the common cytoplasmic mass, the irregular zones of differentiation had microtubules, mitochondria, nuclei, centrioles, and intercentriolar bodies that give rise to 2 flagella. The spermatozoa presented a continuous row of cortical microtubules surrounding 2 parallels axonemes of the 9+1 type.</abstract><cop>Lawrence, KS</cop><pub>American Society of Parasitologists</pub><pmid>9406770</pmid><doi>10.2307/3284353</doi><tpages>8</tpages></addata></record> |
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| ispartof | The Journal of parasitology, 1997-12, Vol.83 (6), p.1007-1014 |
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| subjects | Animals Atriaster heterodus Biological and medical sciences Cell Differentiation Chromatin Cytoplasm Cytoplasm - ultrastructure Development Fundamental and applied biological sciences. Psychology Invertebrates Male Marine Microtubules Microtubules - ultrastructure Mitochondria Monogenea Morphology. Histology. Cytology Nemathelminthia. Plathelmintha Parasitology Perciformes - parasitology Ribosomes Sperm Tail - ultrastructure Spermatids Spermatids - ultrastructure Spermatocytes Spermatogenesis Spermatogonia - ultrastructure Spermatozoa Spermatozoa - growth & development Spermatozoa - ultrastructure Testis - ultrastructure Trematoda - growth & development Trematoda - physiology Trematoda - ultrastructure |
| title | Ultrastructure of Spermatogenesis of Atriaster heterodus (Platyhelminthes, Monogenea, Polyopisthocotylea) |
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