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: Tombesi, M.L., Papeschi, A.G., Mola, L.M.
Formato: JOUR
Materias:
Bovicola
Holokinetic chromosomes
Phthiraptera
Spermatogenesis
Bovicola caprae
Bovicola limbata
Gervais
Insecta
Invertebrata
Ischnocera
Acceso en línea: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 todo:paper_00114545_v64_n1_p25_Tombesi
record_format dspace
spelling todo:paper_00114545_v64_n1_p25_Tombesi2023-10-03T14:09:50Z Spermatogenesis in Bovicola limbata gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera, Ischnocera) Tombesi, M.L. Papeschi, A.G. Mola, L.M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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
Tombesi, M.L.
Papeschi, A.G.
Mola, L.M.
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.
format JOUR
author Tombesi, M.L.
Papeschi, A.G.
Mola, L.M.
author_facet Tombesi, M.L.
Papeschi, A.G.
Mola, L.M.
author_sort Tombesi, M.L.
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)
url http://hdl.handle.net/20.500.12110/paper_00114545_v64_n1_p25_Tombesi
work_keys_str_mv AT tombesiml spermatogenesisinbovicolalimbatagervais1844andbcapraegurlt1843phthirapteraischnocera
AT papeschiag spermatogenesisinbovicolalimbatagervais1844andbcapraegurlt1843phthirapteraischnocera
AT molalm spermatogenesisinbovicolalimbatagervais1844andbcapraegurlt1843phthirapteraischnocera
_version_ 1807322629258870784

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