Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera)

Adult males of Bovicola limbata and B. caprae were cytogenetically analyzed. Both species have n=7, holokinetic chromosomes, and achiasmatic male meiosis. As in other species of Phthiraptera, spermatogenesis follows a particular course with mitotic divisions after meiosis; consequently, cysts of 64...

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Detalles Bibliográficos
Autores principales: Papeschi, Alba Graciela, Mola, Liliana Maria
Publicado: 1999
Materias:
Bovicola
Holokinetic chromosomes
Phthiraptera
Spermatogenesis
Bovicola caprae
Bovicola limbata
Gervais
Insecta
Invertebrata
Ischnocera
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v64_n1_p25_Tombesi
http://hdl.handle.net/20.500.12110/paper_00114545_v64_n1_p25_Tombesi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00114545_v64_n1_p25_Tombesi
record_format dspace
spelling paper:paper_00114545_v64_n1_p25_Tombesi2023-06-08T14:34:58Z Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera) Papeschi, Alba Graciela Mola, Liliana Maria Bovicola Holokinetic chromosomes Phthiraptera Spermatogenesis Bovicola Bovicola caprae Bovicola caprae Bovicola limbata Bovicola limbata Gervais Insecta Invertebrata Ischnocera Phthiraptera Adult males of Bovicola limbata and B. caprae were cytogenetically analyzed. Both species have n=7, holokinetic chromosomes, and achiasmatic male meiosis. As in other species of Phthiraptera, spermatogenesis follows a particular course with mitotic divisions after meiosis; consequently, cysts of 64 active spermatozoa and 64 non-functional cells (pycnotic nuclei) are encountered. In B. limbata an heteromorphic chromosome pair was observed. The results are compared with previous reports in Phthiraptera. The achiasmatic male meiosis, together with the particular course of spermatogenesis and the low chromosome numbers markedly constrain genetic variability. Fil:Papeschi, A.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mola, L.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v64_n1_p25_Tombesi http://hdl.handle.net/20.500.12110/paper_00114545_v64_n1_p25_Tombesi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Bovicola
Holokinetic chromosomes
Phthiraptera
Spermatogenesis
Bovicola
Bovicola caprae
Bovicola caprae
Bovicola limbata
Bovicola limbata
Gervais
Insecta
Invertebrata
Ischnocera
Phthiraptera
spellingShingle Bovicola
Holokinetic chromosomes
Phthiraptera
Spermatogenesis
Bovicola
Bovicola caprae
Bovicola caprae
Bovicola limbata
Bovicola limbata
Gervais
Insecta
Invertebrata
Ischnocera
Phthiraptera
Papeschi, Alba Graciela
Mola, Liliana Maria
Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera)
topic_facet Bovicola
Holokinetic chromosomes
Phthiraptera
Spermatogenesis
Bovicola
Bovicola caprae
Bovicola caprae
Bovicola limbata
Bovicola limbata
Gervais
Insecta
Invertebrata
Ischnocera
Phthiraptera
description Adult males of Bovicola limbata and B. caprae were cytogenetically analyzed. Both species have n=7, holokinetic chromosomes, and achiasmatic male meiosis. As in other species of Phthiraptera, spermatogenesis follows a particular course with mitotic divisions after meiosis; consequently, cysts of 64 active spermatozoa and 64 non-functional cells (pycnotic nuclei) are encountered. In B. limbata an heteromorphic chromosome pair was observed. The results are compared with previous reports in Phthiraptera. The achiasmatic male meiosis, together with the particular course of spermatogenesis and the low chromosome numbers markedly constrain genetic variability.
author Papeschi, Alba Graciela
Mola, Liliana Maria
author_facet Papeschi, Alba Graciela
Mola, Liliana Maria
author_sort Papeschi, Alba Graciela
title Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera)
title_short Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera)
title_full Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera)
title_fullStr Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera)
title_full_unstemmed Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera)
title_sort spermatogenesis in bovicola limbata gervais, 1844 and b. caprae gurlt, 1843 (phthiraptera, ischnocera)
publishDate 1999
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00114545_v64_n1_p25_Tombesi
http://hdl.handle.net/20.500.12110/paper_00114545_v64_n1_p25_Tombesi
work_keys_str_mv AT papeschialbagraciela spermatogenesisinbovicolalimbatagervais1844andbcapraegurlt1843phthirapteraischnocera
AT molalilianamaria spermatogenesisinbovicolalimbatagervais1844andbcapraegurlt1843phthirapteraischnocera
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