Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae)
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.geneticsmr.com//year2007/vol6-1/pdf/gmr0249.pdf http://hdl.handle.net/11449/69667 |
Resumo: | In Nysius californicus (family Lygaeidae, subfamily Orsillinae), a pest commonly known as the seed bug, the chromosome complement is 2n = 16 (12A + 2m + XY), testes are formed by seven seminiferous tubules covered by an orange-colored membrane, and spermatogenesis is cystic. At prophase, sex chromosomes are heteropycnotic and autosomes usually show a chiasma. At metaphase, sex chromosomes along with microchromosomes may be seen located at the center of a ring formed by the remaining autosomes. A characteristic specific of N. californicus was the presence of nucleolar material observed from the cystic cell to the completely differentiated spermatozoon. Variations in size, shape and location of the nucleolar material occur during this process, denoting a variable degree of activity in the different stages. ©FUNPEC-RP. |
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Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae)HeteropteraHeteropycnosisKaryotypeLygaeidaeNucleolar corpusclesNysius californicusanimal tissueautosomechromosome analysischromosome chiasmchromosome NORcontrolled studymalemetaphase chromosomemicrochromosomemitosis ratenonhumannucleoluspest organismprophaseseminiferous tubulesex chromosomesex determinationspermatogenesisspermatozoonsunflowertestisanimalcytologygeneticsmeiosisphysiologyOrsillinaeXyonysius californicusAnimalsMaleMeiosisNucleolus Organizer RegionSeminiferous TubulesSex ChromosomesSpermatogenesisIn Nysius californicus (family Lygaeidae, subfamily Orsillinae), a pest commonly known as the seed bug, the chromosome complement is 2n = 16 (12A + 2m + XY), testes are formed by seven seminiferous tubules covered by an orange-colored membrane, and spermatogenesis is cystic. At prophase, sex chromosomes are heteropycnotic and autosomes usually show a chiasma. At metaphase, sex chromosomes along with microchromosomes may be seen located at the center of a ring formed by the remaining autosomes. A characteristic specific of N. californicus was the presence of nucleolar material observed from the cystic cell to the completely differentiated spermatozoon. Variations in size, shape and location of the nucleolar material occur during this process, denoting a variable degree of activity in the different stages. ©FUNPEC-RP.Departamento de Biologia Laboratório de Citogenética de Insetos Universidade Estadual Paulista, S. José do Rio Preto, SPDepartamento de Biologia Laboratório de Citogenética de Insetos Universidade Estadual Paulista, S. José do Rio Preto, SPUniversidade Estadual Paulista (Unesp)Souza, H. V. [UNESP]Bicudo, H. E M C [UNESP]Itoyama, M. M. [UNESP]2014-05-27T11:22:28Z2014-05-27T11:22:28Z2007-05-18info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article33-40application/pdfhttp://www.geneticsmr.com//year2007/vol6-1/pdf/gmr0249.pdfGenetics and Molecular Research, v. 6, n. 1, p. 33-40, 2007.1676-5680http://hdl.handle.net/11449/69667WOS:0002516134000052-s2.0-340472355862-s2.0-34047235586.pdf2083565673316669Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengGenetics and Molecular Research0,439info:eu-repo/semantics/openAccess2023-11-17T06:12:25Zoai:repositorio.unesp.br:11449/69667Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:57:27.221580Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae) |
title |
Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae) |
spellingShingle |
Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae) Souza, H. V. [UNESP] Heteroptera Heteropycnosis Karyotype Lygaeidae Nucleolar corpuscles Nysius californicus animal tissue autosome chromosome analysis chromosome chiasm chromosome NOR controlled study male metaphase chromosome microchromosome mitosis rate nonhuman nucleolus pest organism prophase seminiferous tubule sex chromosome sex determination spermatogenesis spermatozoon sunflower testis animal cytology genetics meiosis physiology Orsillinae Xyonysius californicus Animals Male Meiosis Nucleolus Organizer Region Seminiferous Tubules Sex Chromosomes Spermatogenesis |
title_short |
Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae) |
title_full |
Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae) |
title_fullStr |
Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae) |
title_full_unstemmed |
Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae) |
title_sort |
Study of chromosomal and nucleolar aspects in testes of Nysius californicus (Heteroptera: Lygaeidae) |
author |
Souza, H. V. [UNESP] |
author_facet |
Souza, H. V. [UNESP] Bicudo, H. E M C [UNESP] Itoyama, M. M. [UNESP] |
author_role |
author |
author2 |
Bicudo, H. E M C [UNESP] Itoyama, M. M. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Souza, H. V. [UNESP] Bicudo, H. E M C [UNESP] Itoyama, M. M. [UNESP] |
dc.subject.por.fl_str_mv |
Heteroptera Heteropycnosis Karyotype Lygaeidae Nucleolar corpuscles Nysius californicus animal tissue autosome chromosome analysis chromosome chiasm chromosome NOR controlled study male metaphase chromosome microchromosome mitosis rate nonhuman nucleolus pest organism prophase seminiferous tubule sex chromosome sex determination spermatogenesis spermatozoon sunflower testis animal cytology genetics meiosis physiology Orsillinae Xyonysius californicus Animals Male Meiosis Nucleolus Organizer Region Seminiferous Tubules Sex Chromosomes Spermatogenesis |
topic |
Heteroptera Heteropycnosis Karyotype Lygaeidae Nucleolar corpuscles Nysius californicus animal tissue autosome chromosome analysis chromosome chiasm chromosome NOR controlled study male metaphase chromosome microchromosome mitosis rate nonhuman nucleolus pest organism prophase seminiferous tubule sex chromosome sex determination spermatogenesis spermatozoon sunflower testis animal cytology genetics meiosis physiology Orsillinae Xyonysius californicus Animals Male Meiosis Nucleolus Organizer Region Seminiferous Tubules Sex Chromosomes Spermatogenesis |
description |
In Nysius californicus (family Lygaeidae, subfamily Orsillinae), a pest commonly known as the seed bug, the chromosome complement is 2n = 16 (12A + 2m + XY), testes are formed by seven seminiferous tubules covered by an orange-colored membrane, and spermatogenesis is cystic. At prophase, sex chromosomes are heteropycnotic and autosomes usually show a chiasma. At metaphase, sex chromosomes along with microchromosomes may be seen located at the center of a ring formed by the remaining autosomes. A characteristic specific of N. californicus was the presence of nucleolar material observed from the cystic cell to the completely differentiated spermatozoon. Variations in size, shape and location of the nucleolar material occur during this process, denoting a variable degree of activity in the different stages. ©FUNPEC-RP. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-05-18 2014-05-27T11:22:28Z 2014-05-27T11:22:28Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.geneticsmr.com//year2007/vol6-1/pdf/gmr0249.pdf Genetics and Molecular Research, v. 6, n. 1, p. 33-40, 2007. 1676-5680 http://hdl.handle.net/11449/69667 WOS:000251613400005 2-s2.0-34047235586 2-s2.0-34047235586.pdf 2083565673316669 |
url |
http://www.geneticsmr.com//year2007/vol6-1/pdf/gmr0249.pdf http://hdl.handle.net/11449/69667 |
identifier_str_mv |
Genetics and Molecular Research, v. 6, n. 1, p. 33-40, 2007. 1676-5680 WOS:000251613400005 2-s2.0-34047235586 2-s2.0-34047235586.pdf 2083565673316669 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Genetics and Molecular Research 0,439 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
33-40 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128878848245760 |