Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae)
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | https://doi.org/10.1016/j.anireprosci.2017.06.011 http://www.locus.ufv.br/handle/123456789/19939 |
Resumo: | Rodents are distributed worldwide, playing important ecological roles regarding preservation of forest areas. Thus, the study of their reproductive biology is a key for conservation initiatives that prevent extinction and/or improve species management. The present study aimed to describe the spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx, an endemic species from Atlantic Rainforest areas, in Brazil. The average body weight was 418.43 g with a gonadosomatic index of 0.41%. The testicular parenchyma organization followed the pattern described for other rodent species, with a large amount of seminiferous tubules occupying 93.57% of the organ, in a total of 26.04 m per testicle. Stage I of the seminiferous tubule cycle was the most frequent in K. amblyonyx, while stage IV the most scarce. Each tubular section in stage I showed 0.47 type-A spermatogonia, 11.78 primary spermatocytes in pre-leptotene, 3.81 in zygotene and 14.31 in pachytene, whereas 32.19 cells were round spermatids and 6.23 were Sertoli cells. From these results it was possible to determine the sperm reserve of 274.49 × 106 cells per gram of testis. The mitotic and meiotic indexes were 25.06 and 2.25 cells, respectively, whereas the spermatogenic yield was 69.73 cells. Those findings are significant since this is the first study regarding the reproductive aspects of the only Echimyidae species in Brazil, which shows a monogamous mating system. |
id |
UFV_7df24d8b02d36635c02c3fc93dc679f3 |
---|---|
oai_identifier_str |
oai:locus.ufv.br:123456789/19939 |
network_acronym_str |
UFV |
network_name_str |
LOCUS Repositório Institucional da UFV |
repository_id_str |
2145 |
spelling |
Siman, Verônica A.Godoy, Raquel S.M.Dias, Fernanda C.R.Silva, Fabiano A.Giudice, Gisele M.L. DelGomes, Marcos L.M.Matta, Sérgio L.P.2018-06-05T13:20:46Z2018-06-05T13:20:46Z2017-06-2103784320https://doi.org/10.1016/j.anireprosci.2017.06.011http://www.locus.ufv.br/handle/123456789/19939Rodents are distributed worldwide, playing important ecological roles regarding preservation of forest areas. Thus, the study of their reproductive biology is a key for conservation initiatives that prevent extinction and/or improve species management. The present study aimed to describe the spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx, an endemic species from Atlantic Rainforest areas, in Brazil. The average body weight was 418.43 g with a gonadosomatic index of 0.41%. The testicular parenchyma organization followed the pattern described for other rodent species, with a large amount of seminiferous tubules occupying 93.57% of the organ, in a total of 26.04 m per testicle. Stage I of the seminiferous tubule cycle was the most frequent in K. amblyonyx, while stage IV the most scarce. Each tubular section in stage I showed 0.47 type-A spermatogonia, 11.78 primary spermatocytes in pre-leptotene, 3.81 in zygotene and 14.31 in pachytene, whereas 32.19 cells were round spermatids and 6.23 were Sertoli cells. From these results it was possible to determine the sperm reserve of 274.49 × 106 cells per gram of testis. The mitotic and meiotic indexes were 25.06 and 2.25 cells, respectively, whereas the spermatogenic yield was 69.73 cells. Those findings are significant since this is the first study regarding the reproductive aspects of the only Echimyidae species in Brazil, which shows a monogamous mating system.engAnimal Reproduction Sciencev. 184, p. 36-43, September 2017Elsevier B.V.info:eu-repo/semantics/openAccessSpermatogenesisSeminiferous tubulesSeminiferous epithelium cycleGerm cellsSpermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae)info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALartigo.pdfartigo.pdfTexto completoapplication/pdf3172060https://locus.ufv.br//bitstream/123456789/19939/1/artigo.pdfcdafab089b535503a20e0c8b43512733MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/19939/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAILartigo.pdf.jpgartigo.pdf.jpgIM Thumbnailimage/jpeg5460https://locus.ufv.br//bitstream/123456789/19939/3/artigo.pdf.jpg0602157152bd9ebabf1c321b3957f99dMD53123456789/199392018-06-05 23:00:30.331oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452018-06-06T02:00:30LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae) |
title |
Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae) |
spellingShingle |
Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae) Siman, Verônica A. Spermatogenesis Seminiferous tubules Seminiferous epithelium cycle Germ cells |
title_short |
Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae) |
title_full |
Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae) |
title_fullStr |
Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae) |
title_full_unstemmed |
Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae) |
title_sort |
Spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx (Wagner, 1845) (Rodentia, Echimyidae) |
author |
Siman, Verônica A. |
author_facet |
Siman, Verônica A. Godoy, Raquel S.M. Dias, Fernanda C.R. Silva, Fabiano A. Giudice, Gisele M.L. Del Gomes, Marcos L.M. Matta, Sérgio L.P. |
author_role |
author |
author2 |
Godoy, Raquel S.M. Dias, Fernanda C.R. Silva, Fabiano A. Giudice, Gisele M.L. Del Gomes, Marcos L.M. Matta, Sérgio L.P. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Siman, Verônica A. Godoy, Raquel S.M. Dias, Fernanda C.R. Silva, Fabiano A. Giudice, Gisele M.L. Del Gomes, Marcos L.M. Matta, Sérgio L.P. |
dc.subject.pt-BR.fl_str_mv |
Spermatogenesis Seminiferous tubules Seminiferous epithelium cycle Germ cells |
topic |
Spermatogenesis Seminiferous tubules Seminiferous epithelium cycle Germ cells |
description |
Rodents are distributed worldwide, playing important ecological roles regarding preservation of forest areas. Thus, the study of their reproductive biology is a key for conservation initiatives that prevent extinction and/or improve species management. The present study aimed to describe the spermatogenic dynamics of the spiny rat Kannabateomys amblyonyx, an endemic species from Atlantic Rainforest areas, in Brazil. The average body weight was 418.43 g with a gonadosomatic index of 0.41%. The testicular parenchyma organization followed the pattern described for other rodent species, with a large amount of seminiferous tubules occupying 93.57% of the organ, in a total of 26.04 m per testicle. Stage I of the seminiferous tubule cycle was the most frequent in K. amblyonyx, while stage IV the most scarce. Each tubular section in stage I showed 0.47 type-A spermatogonia, 11.78 primary spermatocytes in pre-leptotene, 3.81 in zygotene and 14.31 in pachytene, whereas 32.19 cells were round spermatids and 6.23 were Sertoli cells. From these results it was possible to determine the sperm reserve of 274.49 × 106 cells per gram of testis. The mitotic and meiotic indexes were 25.06 and 2.25 cells, respectively, whereas the spermatogenic yield was 69.73 cells. Those findings are significant since this is the first study regarding the reproductive aspects of the only Echimyidae species in Brazil, which shows a monogamous mating system. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-06-21 |
dc.date.accessioned.fl_str_mv |
2018-06-05T13:20:46Z |
dc.date.available.fl_str_mv |
2018-06-05T13:20:46Z |
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 |
https://doi.org/10.1016/j.anireprosci.2017.06.011 http://www.locus.ufv.br/handle/123456789/19939 |
dc.identifier.issn.none.fl_str_mv |
03784320 |
identifier_str_mv |
03784320 |
url |
https://doi.org/10.1016/j.anireprosci.2017.06.011 http://www.locus.ufv.br/handle/123456789/19939 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
v. 184, p. 36-43, September 2017 |
dc.rights.driver.fl_str_mv |
Elsevier B.V. info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Elsevier B.V. |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Animal Reproduction Science |
publisher.none.fl_str_mv |
Animal Reproduction Science |
dc.source.none.fl_str_mv |
reponame:LOCUS Repositório Institucional da UFV instname:Universidade Federal de Viçosa (UFV) instacron:UFV |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
UFV |
institution |
UFV |
reponame_str |
LOCUS Repositório Institucional da UFV |
collection |
LOCUS Repositório Institucional da UFV |
bitstream.url.fl_str_mv |
https://locus.ufv.br//bitstream/123456789/19939/1/artigo.pdf https://locus.ufv.br//bitstream/123456789/19939/2/license.txt https://locus.ufv.br//bitstream/123456789/19939/3/artigo.pdf.jpg |
bitstream.checksum.fl_str_mv |
cdafab089b535503a20e0c8b43512733 8a4605be74aa9ea9d79846c1fba20a33 0602157152bd9ebabf1c321b3957f99d |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV) |
repository.mail.fl_str_mv |
fabiojreis@ufv.br |
_version_ |
1801212969942515712 |