Comparative Study of Spermatogenesis and Nucleolar Behavior in Testicular Lobes of Euschistus heros (Heteroptera: Pentatomidae)
In some testicular lobes of the Pentatomidae there may be occurrence of atypical spermatogenesis or polymegaly, leading to the production of nonfertile sperm. The comparative analysis of spermatogenesis and nucleolar behavior in testicular lobes of Euschistus heros showed cells with polymegaly in lo...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Psyche: A Journal of Entomology |
| Online Access: | http://dx.doi.org/10.1155/2010/428673 |
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| author | Hederson Vinicius de Souza Mary Massumi Itoyama |
| author_facet | Hederson Vinicius de Souza Mary Massumi Itoyama |
| author_sort | Hederson Vinicius de Souza |
| collection | DOAJ |
| description | In some testicular lobes of the Pentatomidae there may be occurrence of atypical spermatogenesis or polymegaly, leading to the production of nonfertile sperm. The comparative analysis of spermatogenesis and nucleolar behavior in testicular lobes of Euschistus heros showed cells with polymegaly in lobes 4 and 6. Generally, when these lobes are present in the same individual, there is also the formation of atypical cells in the flanking lobe. Such characteristic was not seen in E. heros. However, differences regarding the concentration of heteropyknotic chromatin and silver-positive bodies in this lobe deserve attention. This study explored the literature and demonstrated the prevalence of some lobes in the formation of differentiated cells. It was also found in the literature that there is an association of the chromocenter with the nucleolus in several species of Pentatomidae, but in E. heros this association does not appear to occur. |
| format | Article |
| id | doaj-art-5c3380f341db489cb3486362323ff9c1 |
| institution | Kabale University |
| issn | 0033-2615 1687-7438 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Psyche: A Journal of Entomology |
| spelling | doaj-art-5c3380f341db489cb3486362323ff9c12025-02-03T01:33:01ZengWileyPsyche: A Journal of Entomology0033-26151687-74382010-01-01201010.1155/2010/428673428673Comparative Study of Spermatogenesis and Nucleolar Behavior in Testicular Lobes of Euschistus heros (Heteroptera: Pentatomidae)Hederson Vinicius de Souza0Mary Massumi Itoyama1Laboratório de Citogenética e Molecular de Insetos (LACIMI), Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista (UNESP), Rua Cristóvão Colombo, 2265, Jardim Nazareth, CEP: 15054-000 São José do Rio Preto, SP, BrazilLaboratório de Citogenética e Molecular de Insetos (LACIMI), Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista (UNESP), Rua Cristóvão Colombo, 2265, Jardim Nazareth, CEP: 15054-000 São José do Rio Preto, SP, BrazilIn some testicular lobes of the Pentatomidae there may be occurrence of atypical spermatogenesis or polymegaly, leading to the production of nonfertile sperm. The comparative analysis of spermatogenesis and nucleolar behavior in testicular lobes of Euschistus heros showed cells with polymegaly in lobes 4 and 6. Generally, when these lobes are present in the same individual, there is also the formation of atypical cells in the flanking lobe. Such characteristic was not seen in E. heros. However, differences regarding the concentration of heteropyknotic chromatin and silver-positive bodies in this lobe deserve attention. This study explored the literature and demonstrated the prevalence of some lobes in the formation of differentiated cells. It was also found in the literature that there is an association of the chromocenter with the nucleolus in several species of Pentatomidae, but in E. heros this association does not appear to occur.http://dx.doi.org/10.1155/2010/428673 |
| spellingShingle | Hederson Vinicius de Souza Mary Massumi Itoyama Comparative Study of Spermatogenesis and Nucleolar Behavior in Testicular Lobes of Euschistus heros (Heteroptera: Pentatomidae) Psyche: A Journal of Entomology |
| title | Comparative Study of Spermatogenesis and Nucleolar Behavior in Testicular Lobes of Euschistus heros (Heteroptera: Pentatomidae) |
| title_full | Comparative Study of Spermatogenesis and Nucleolar Behavior in Testicular Lobes of Euschistus heros (Heteroptera: Pentatomidae) |
| title_fullStr | Comparative Study of Spermatogenesis and Nucleolar Behavior in Testicular Lobes of Euschistus heros (Heteroptera: Pentatomidae) |
| title_full_unstemmed | Comparative Study of Spermatogenesis and Nucleolar Behavior in Testicular Lobes of Euschistus heros (Heteroptera: Pentatomidae) |
| title_short | Comparative Study of Spermatogenesis and Nucleolar Behavior in Testicular Lobes of Euschistus heros (Heteroptera: Pentatomidae) |
| title_sort | comparative study of spermatogenesis and nucleolar behavior in testicular lobes of euschistus heros heteroptera pentatomidae |
| url | http://dx.doi.org/10.1155/2010/428673 |
| work_keys_str_mv | AT hedersonviniciusdesouza comparativestudyofspermatogenesisandnucleolarbehaviorintesticularlobesofeuschistusherosheteropterapentatomidae AT marymassumiitoyama comparativestudyofspermatogenesisandnucleolarbehaviorintesticularlobesofeuschistusherosheteropterapentatomidae |