التفاصيل البيبلوغرافية
| العنوان: |
Spermatogenesis and nucleolar behavior in Triatoma vandae and Triatoma williami (Hemiptera, Triatominae). |
| المؤلفون: |
Pereira NP; São José do Rio Preto, SP, Brasil., Alevi KC; São José do Rio Preto, SP, Brasil kaiochaboli@hotmail.com., Mendonça PP; São José do Rio Preto, SP, Brasil., Azeredo-Oliveira MT; São José do Rio Preto, SP, Brasil. |
| المصدر: |
Genetics and molecular research : GMR [Genet Mol Res] 2015 Oct 09; Vol. 14 (4), pp. 12145-51. Date of Electronic Publication: 2015 Oct 09. |
| نوع المنشور: |
Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: |
English |
| بيانات الدورية: |
Publisher: FUNPEC Country of Publication: Brazil NLM ID: 101169387 Publication Model: Electronic Cited Medium: Internet ISSN: 1676-5680 (Electronic) Linking ISSN: 16765680 NLM ISO Abbreviation: Genet Mol Res Subsets: MEDLINE |
| أسماء مطبوعة: |
Original Publication: [Ribeirao Preto, SP Brazil] : FUNPEC, 2002- |
| مواضيع طبية MeSH: |
Spermatogenesis/*physiology , Triatoma/*physiology, Animals ; Cell Nucleolus/metabolism ; Male ; Meiosis/physiology ; Seminiferous Tubules/physiology |
| مستخلص: |
This study describes spermatogenesis in Triatoma vandae and the nucleolar behavior of T. vandae and Triatoma williami, with a cytotaxonomic focus. Analysis of mitotic and meiotic metaphases of T.vandae confirms the species karyotype. T. vandae presents some characteristics during meiosis that differentiate it from T. williami, including the presence of a chromocenter with two sex chromosomes individualized during early prophase, and the presence of a bi- or tripartite corpuscle inpolyploid nuclei. It was possible to observe the compaction of chromatin during prophase resulting in holocentric chromosomes. During metaphase,the autosomes presented a ring shape and the sex chromosomes were in the center of the ring. These chromosomes were separated in anaphase. Although it is common, we did not observe the phenomenon of late migration of the sex chromosomes. By means of silver ion impregnation it was possible to describe nucleologenesis in T. vandae and T. williami. In both species we observed persistence of the nucleolar material duringmeiosis. In addition to the cells in meiotic division, we also observed the presence of polyploid nuclei in the seminiferous tubule walls that nourish the cells during cell division. The nucleolar markings reflect their capacity for synthetic activity. T. vandae and T. williami presented only one nucleolar corpuscle, which reflects low synthetic activity. This study confirms the karyotype of T. vandae, describes characteristics that differentiate T. vandae and T. williami during meiosis, and describes the phenomenon of nucleolar persistence in both species. |
| تواريخ الأحداث: |
Date Created: 20151028 Date Completed: 20160916 Latest Revision: 20151028 |
| رمز التحديث: |
20231215 |
| DOI: |
10.4238/2015.October.9.2 |
| PMID: |
26505362 |
| قاعدة البيانات: |
MEDLINE |
