Cytogenetics of Triatominae: III - A study on male sterility induced through hybridization of Triatoma sórdida and Triatoma pseudomaculata
Males from bilateral crosses between Triatoma sórdida and Triatoma pseudomaculata were unable to give offspring, as shown by subsequent backcrosses (BC) between hybrid males and parental females. This kind of sterility indueed through interspecific hybridization seems to be due to lack of sperm migr...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Medicina Tropical (SBMT)
1975-08-01
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| Series: | Revista da Sociedade Brasileira de Medicina Tropical |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821975000400005&lng=en&tlng=en |
| _version_ | 1818229923668557824 |
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| author | Giorgio Schreiber Alina Perlowagora-Szumlewicz Rogério Parentoni Martins |
| author_facet | Giorgio Schreiber Alina Perlowagora-Szumlewicz Rogério Parentoni Martins |
| author_sort | Giorgio Schreiber |
| collection | DOAJ |
| description | Males from bilateral crosses between Triatoma sórdida and Triatoma pseudomaculata were unable to give offspring, as shown by subsequent backcrosses (BC) between hybrid males and parental females. This kind of sterility indueed through interspecific hybridization seems to be due to lack of sperm migration from the bursa copulatrix to the spermateca, thus suggesting primarily failure on the part of hybrid males to produce and/or to incorporate male accessory secretions into the spermatophore bulb. Addicional proof that sterility induced in hybrid males is at the sperm level has been afforded by the spermatogenesis herein studied. The anomalous processes like; 1) prophases of spermatogonia with the chromosomes scattered in the cytoplasm, 2) first metaphases with unpaired tetrades, 3) spermatids differing in size and 4) spermatozoa of abnormal shape and generdlly of giant size, can be taken as an indicator of the degree of departure from the normal course of spermatogenesis. |
| first_indexed | 2024-12-12T10:26:19Z |
| format | Article |
| id | doaj.art-08219986aaf94fe387ce0363c11d14f3 |
| institution | Directory Open Access Journal |
| issn | 1678-9849 |
| language | English |
| last_indexed | 2024-12-12T10:26:19Z |
| publishDate | 1975-08-01 |
| publisher | Sociedade Brasileira de Medicina Tropical (SBMT) |
| record_format | Article |
| series | Revista da Sociedade Brasileira de Medicina Tropical |
| spelling | doaj.art-08219986aaf94fe387ce0363c11d14f32022-12-22T00:27:26ZengSociedade Brasileira de Medicina Tropical (SBMT)Revista da Sociedade Brasileira de Medicina Tropical1678-98491975-08-019418919510.1590/S0037-86821975000400005S0037-86821975000400005Cytogenetics of Triatominae: III - A study on male sterility induced through hybridization of Triatoma sórdida and Triatoma pseudomaculataGiorgio Schreiber0Alina Perlowagora-Szumlewicz1Rogério Parentoni Martins2Universidade Federal de Minas GeraisFundação Oswaldo CruzUniversidade Federal do Rio de JaneiroMales from bilateral crosses between Triatoma sórdida and Triatoma pseudomaculata were unable to give offspring, as shown by subsequent backcrosses (BC) between hybrid males and parental females. This kind of sterility indueed through interspecific hybridization seems to be due to lack of sperm migration from the bursa copulatrix to the spermateca, thus suggesting primarily failure on the part of hybrid males to produce and/or to incorporate male accessory secretions into the spermatophore bulb. Addicional proof that sterility induced in hybrid males is at the sperm level has been afforded by the spermatogenesis herein studied. The anomalous processes like; 1) prophases of spermatogonia with the chromosomes scattered in the cytoplasm, 2) first metaphases with unpaired tetrades, 3) spermatids differing in size and 4) spermatozoa of abnormal shape and generdlly of giant size, can be taken as an indicator of the degree of departure from the normal course of spermatogenesis.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821975000400005&lng=en&tlng=en |
| spellingShingle | Giorgio Schreiber Alina Perlowagora-Szumlewicz Rogério Parentoni Martins Cytogenetics of Triatominae: III - A study on male sterility induced through hybridization of Triatoma sórdida and Triatoma pseudomaculata Revista da Sociedade Brasileira de Medicina Tropical |
| title | Cytogenetics of Triatominae: III - A study on male sterility induced through hybridization of Triatoma sórdida and Triatoma pseudomaculata |
| title_full | Cytogenetics of Triatominae: III - A study on male sterility induced through hybridization of Triatoma sórdida and Triatoma pseudomaculata |
| title_fullStr | Cytogenetics of Triatominae: III - A study on male sterility induced through hybridization of Triatoma sórdida and Triatoma pseudomaculata |
| title_full_unstemmed | Cytogenetics of Triatominae: III - A study on male sterility induced through hybridization of Triatoma sórdida and Triatoma pseudomaculata |
| title_short | Cytogenetics of Triatominae: III - A study on male sterility induced through hybridization of Triatoma sórdida and Triatoma pseudomaculata |
| title_sort | cytogenetics of triatominae iii a study on male sterility induced through hybridization of triatoma sordida and triatoma pseudomaculata |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0037-86821975000400005&lng=en&tlng=en |
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