Ultrastructure of the female gonad of two temnocephalids (Platyhelminthes, Rhabdocoela)
The female gonad of Temnocephala dendyi and T. minor consists of a single germarium and two rows of vitellaria. It is enveloped by an extracellular lamina and accessory cells. Accessory cells are only peripherally located in the germarium while their cytoplasmic projections also fill the spaces betw...
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| Veröffentlicht in: | Hydrobiologia 1998-01, Vol.383 (1-3), p.215-226 |
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| creator | FALLENI, A LUCCHESI, P GREMIGNI, V |
| description | The female gonad of Temnocephala dendyi and T. minor consists of a single germarium and two rows of vitellaria. It is enveloped by an extracellular lamina and accessory cells. Accessory cells are only peripherally located in the germarium while their cytoplasmic projections also fill the spaces between vitellocytes in the vitellarium. The main feature of oocyte maturation is the appearance of chromatoid bodies and the development of rough endoplasmic reticulum (R.E.R.) and Golgi complexes which appear to be correlated with the production of double-structured egg granules. The egg granules, which are localized in the cortical cytoplasm of mature oocytes, contain glycoproteins, are devoid of polyphenols and are similar in structure and composition to the cortical granules observed in some Digenea and Monogenea. Vitellocytes are typical secretory cells with well-developed R.E.R. and Golgi complexes which are involved in the production of shell globules and yolk. The multigranular pattern and the polyphenolic composition of the shell globules of the temnocephalids investigated are similar to those observed in other rhabdocoels, and in some Prolecithophora and Neodermata. This feature may represent a synapomorphy shared by these taxa. |
| doi_str_mv | 10.1023/a:1003420417500 |
| format | Article |
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It is enveloped by an extracellular lamina and accessory cells. Accessory cells are only peripherally located in the germarium while their cytoplasmic projections also fill the spaces between vitellocytes in the vitellarium. The main feature of oocyte maturation is the appearance of chromatoid bodies and the development of rough endoplasmic reticulum (R.E.R.) and Golgi complexes which appear to be correlated with the production of double-structured egg granules. The egg granules, which are localized in the cortical cytoplasm of mature oocytes, contain glycoproteins, are devoid of polyphenols and are similar in structure and composition to the cortical granules observed in some Digenea and Monogenea. Vitellocytes are typical secretory cells with well-developed R.E.R. and Golgi complexes which are involved in the production of shell globules and yolk. The multigranular pattern and the polyphenolic composition of the shell globules of the temnocephalids investigated are similar to those observed in other rhabdocoels, and in some Prolecithophora and Neodermata. This feature may represent a synapomorphy shared by these taxa.</description><identifier>ISSN: 0018-8158</identifier><identifier>EISSN: 1573-5117</identifier><identifier>DOI: 10.1023/a:1003420417500</identifier><identifier>CODEN: HYDRB8</identifier><language>eng</language><publisher>Dordrecht: Springer</publisher><subject>Antigen-presenting cells ; Aquatic invertebrates ; Biochemistry. Physiology. Immunology. Molecular biology ; Biological and medical sciences ; Cellular biology ; Composition ; Cytoplasm ; Egg yolk ; Eggs ; Endoplasmic reticulum ; Evolution ; Extracellular ; Females ; Fundamental and applied biological sciences. Psychology ; Gametocytes ; Globules ; Glycoproteins ; Golgi apparatus ; Gonads ; Granular materials ; Invertebrates ; Marine invertebrates ; Maturation ; Nemathelminthia. Plathelmintha ; Oocytes ; Phylogeny ; Physiology. Development ; Platyhelminthes ; Polyphenols ; Proteins ; Rhabdocoela ; Temnocephala dendyi ; Temnocephala minor ; Ultrastructure</subject><ispartof>Hydrobiologia, 1998-01, Vol.383 (1-3), p.215-226</ispartof><rights>1999 INIST-CNRS</rights><rights>Kluwer Academic Publishers 1998.</rights><rights>Kluwer Academic Publishers 1998</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c314t-80533983e5bb4e0c67d01e4785bc28ceb4e5936cb6eadf41ca02849dfbc4925d3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>309,310,314,780,784,789,790,23930,23931,25140,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1772880$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><contributor>Justine, J-L (eds)</contributor><contributor>Schockaert, E</contributor><contributor>Watson, N</contributor><creatorcontrib>FALLENI, A</creatorcontrib><creatorcontrib>LUCCHESI, P</creatorcontrib><creatorcontrib>GREMIGNI, V</creatorcontrib><title>Ultrastructure of the female gonad of two temnocephalids (Platyhelminthes, Rhabdocoela)</title><title>Hydrobiologia</title><description>The female gonad of Temnocephala dendyi and T. minor consists of a single germarium and two rows of vitellaria. It is enveloped by an extracellular lamina and accessory cells. Accessory cells are only peripherally located in the germarium while their cytoplasmic projections also fill the spaces between vitellocytes in the vitellarium. The main feature of oocyte maturation is the appearance of chromatoid bodies and the development of rough endoplasmic reticulum (R.E.R.) and Golgi complexes which appear to be correlated with the production of double-structured egg granules. The egg granules, which are localized in the cortical cytoplasm of mature oocytes, contain glycoproteins, are devoid of polyphenols and are similar in structure and composition to the cortical granules observed in some Digenea and Monogenea. Vitellocytes are typical secretory cells with well-developed R.E.R. and Golgi complexes which are involved in the production of shell globules and yolk. The multigranular pattern and the polyphenolic composition of the shell globules of the temnocephalids investigated are similar to those observed in other rhabdocoels, and in some Prolecithophora and Neodermata. This feature may represent a synapomorphy shared by these taxa.</description><subject>Antigen-presenting cells</subject><subject>Aquatic invertebrates</subject><subject>Biochemistry. Physiology. Immunology. Molecular biology</subject><subject>Biological and medical sciences</subject><subject>Cellular biology</subject><subject>Composition</subject><subject>Cytoplasm</subject><subject>Egg yolk</subject><subject>Eggs</subject><subject>Endoplasmic reticulum</subject><subject>Evolution</subject><subject>Extracellular</subject><subject>Females</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Gametocytes</subject><subject>Globules</subject><subject>Glycoproteins</subject><subject>Golgi apparatus</subject><subject>Gonads</subject><subject>Granular materials</subject><subject>Invertebrates</subject><subject>Marine invertebrates</subject><subject>Maturation</subject><subject>Nemathelminthia. Plathelmintha</subject><subject>Oocytes</subject><subject>Phylogeny</subject><subject>Physiology. Development</subject><subject>Platyhelminthes</subject><subject>Polyphenols</subject><subject>Proteins</subject><subject>Rhabdocoela</subject><subject>Temnocephala dendyi</subject><subject>Temnocephala minor</subject><subject>Ultrastructure</subject><issn>0018-8158</issn><issn>1573-5117</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1zk1LxDAQBuAgCq6rZ69FRRSsTr6a1JssfsGCIi4eS5pO3UrarEmL7L-36J4ETwMvzzszhBxSuKTA-JW5pgBcMBBUSYAtMqFS8VRSqrbJBIDqVFOpd8lejB8AoHIGE_K2cH0wsQ-D7YeAia-TfolJja1xmLz7zlQ_2ZdPemw7b3G1NK6pYnL27Ey_XqJrm26sxIvkZWnKyluPzpzvk53auIgHmzkli7vb19lDOn-6f5zdzFPLqehTDZLzXHOUZSkQbKYqoCiUlqVl2uIYypxntszQVLWg1gDTIq_q0oqcyYpPyenv3lXwnwPGvmibaNE506EfYkEVY0rlaoRHf-CHH0I3_lZoRhmnisOIjv9DLMu4FlIpPaqTjTLRGlcH09kmFqvQtCasx5OKaQ38G2XJeWQ</recordid><startdate>19980101</startdate><enddate>19980101</enddate><creator>FALLENI, A</creator><creator>LUCCHESI, P</creator><creator>GREMIGNI, V</creator><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>3V.</scope><scope>7QG</scope><scope>7QH</scope><scope>7SN</scope><scope>7SS</scope><scope>7U7</scope><scope>7UA</scope><scope>88A</scope><scope>8AO</scope><scope>8FD</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>H95</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>LK8</scope><scope>M7N</scope><scope>M7P</scope><scope>P64</scope><scope>PATMY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PYCSY</scope><scope>RC3</scope></search><sort><creationdate>19980101</creationdate><title>Ultrastructure of the female gonad of two temnocephalids (Platyhelminthes, Rhabdocoela)</title><author>FALLENI, A ; LUCCHESI, P ; GREMIGNI, V</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c314t-80533983e5bb4e0c67d01e4785bc28ceb4e5936cb6eadf41ca02849dfbc4925d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Antigen-presenting cells</topic><topic>Aquatic invertebrates</topic><topic>Biochemistry. Physiology. Immunology. Molecular biology</topic><topic>Biological and medical sciences</topic><topic>Cellular biology</topic><topic>Composition</topic><topic>Cytoplasm</topic><topic>Egg yolk</topic><topic>Eggs</topic><topic>Endoplasmic reticulum</topic><topic>Evolution</topic><topic>Extracellular</topic><topic>Females</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Gametocytes</topic><topic>Globules</topic><topic>Glycoproteins</topic><topic>Golgi apparatus</topic><topic>Gonads</topic><topic>Granular materials</topic><topic>Invertebrates</topic><topic>Marine invertebrates</topic><topic>Maturation</topic><topic>Nemathelminthia. Plathelmintha</topic><topic>Oocytes</topic><topic>Phylogeny</topic><topic>Physiology. Development</topic><topic>Platyhelminthes</topic><topic>Polyphenols</topic><topic>Proteins</topic><topic>Rhabdocoela</topic><topic>Temnocephala dendyi</topic><topic>Temnocephala minor</topic><topic>Ultrastructure</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>FALLENI, A</creatorcontrib><creatorcontrib>LUCCHESI, P</creatorcontrib><creatorcontrib>GREMIGNI, V</creatorcontrib><collection>Pascal-Francis</collection><collection>ProQuest Central (Corporate)</collection><collection>Animal Behavior Abstracts</collection><collection>Aqualine</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Toxicology Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Biology Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Biological Science Collection</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biological Science Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environmental Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Environmental Science Collection</collection><collection>Genetics Abstracts</collection><jtitle>Hydrobiologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>FALLENI, A</au><au>LUCCHESI, P</au><au>GREMIGNI, V</au><au>Justine, J-L (eds)</au><au>Schockaert, E</au><au>Watson, N</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ultrastructure of the female gonad of two temnocephalids (Platyhelminthes, Rhabdocoela)</atitle><jtitle>Hydrobiologia</jtitle><date>1998-01-01</date><risdate>1998</risdate><volume>383</volume><issue>1-3</issue><spage>215</spage><epage>226</epage><pages>215-226</pages><issn>0018-8158</issn><eissn>1573-5117</eissn><coden>HYDRB8</coden><abstract>The female gonad of Temnocephala dendyi and T. minor consists of a single germarium and two rows of vitellaria. It is enveloped by an extracellular lamina and accessory cells. Accessory cells are only peripherally located in the germarium while their cytoplasmic projections also fill the spaces between vitellocytes in the vitellarium. The main feature of oocyte maturation is the appearance of chromatoid bodies and the development of rough endoplasmic reticulum (R.E.R.) and Golgi complexes which appear to be correlated with the production of double-structured egg granules. The egg granules, which are localized in the cortical cytoplasm of mature oocytes, contain glycoproteins, are devoid of polyphenols and are similar in structure and composition to the cortical granules observed in some Digenea and Monogenea. Vitellocytes are typical secretory cells with well-developed R.E.R. and Golgi complexes which are involved in the production of shell globules and yolk. The multigranular pattern and the polyphenolic composition of the shell globules of the temnocephalids investigated are similar to those observed in other rhabdocoels, and in some Prolecithophora and Neodermata. This feature may represent a synapomorphy shared by these taxa.</abstract><cop>Dordrecht</cop><pub>Springer</pub><doi>10.1023/a:1003420417500</doi><tpages>12</tpages></addata></record> |
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| ispartof | Hydrobiologia, 1998-01, Vol.383 (1-3), p.215-226 |
| issn | 0018-8158 1573-5117 |
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| subjects | Antigen-presenting cells Aquatic invertebrates Biochemistry. Physiology. Immunology. Molecular biology Biological and medical sciences Cellular biology Composition Cytoplasm Egg yolk Eggs Endoplasmic reticulum Evolution Extracellular Females Fundamental and applied biological sciences. Psychology Gametocytes Globules Glycoproteins Golgi apparatus Gonads Granular materials Invertebrates Marine invertebrates Maturation Nemathelminthia. Plathelmintha Oocytes Phylogeny Physiology. Development Platyhelminthes Polyphenols Proteins Rhabdocoela Temnocephala dendyi Temnocephala minor Ultrastructure |
| title | Ultrastructure of the female gonad of two temnocephalids (Platyhelminthes, Rhabdocoela) |
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