Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Endonuclear canal"'
Publikováno v:
Anatomia, Histologia, Embryologia. 49:814-819
It remains a major concern that sperm structure has continued to be poorly investigated and reported in avian species. To our knowledge, sperm structure in the order Pelecaniforme has not been reported. Although McFarlane (1963; Proceedings of the XI
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f83b78ea65a8d226a30acff76100c08b
https://doi.org/10.1111/ahe.12586
https://doi.org/10.1111/ahe.12586
Publikováno v:
Tissuecell. 68
Avian species comprise more than half of all vertebrates yet there is a dearth of information regarding spermatid development in this class of animals. This report of spermiogenesis in the cattle egret, Bubulcus ibis, is the first in the order Peleca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65c7d93ebba54fc0603c11f6502f05b4
https://pubmed.ncbi.nlm.nih.gov/33212325
https://pubmed.ncbi.nlm.nih.gov/33212325
Publikováno v:
Comptes Rendus Biologies. 336:473-478
Spermiogenesis, in particular the head differentiation of Diplometopon zarudnyi, was studied at the ultrastructural level by Transmission Electron Microscope (TEM). The process includes acrosomal vesicle development, nuclear elongation, chromatin con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff9a46f0fcaa3e3c46365b6f816baf4e
https://doi.org/10.1016/j.crvi.2013.10.003
https://doi.org/10.1016/j.crvi.2013.10.003
Publikováno v:
Journal of Morphology. 267:1157-1164
The sperm of Caprimulgus europaeus is typical of other nonpasserines in many respects. Features shared with Paleognathae and Galloanserae are the conical acrosome, shorter than the nucleus; the presence of a perforatorium and endonuclear canal; the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2f67be2fe7edf9f87d8fb6804b25055
https://doi.org/10.1002/jmor.10466
https://doi.org/10.1002/jmor.10466
Autor:
Barrie G. M. Jamieson, Sandro Tripepi
Publikováno v:
Acta Zoologica. 86:239-244
The spermatozoon of Apus apus is typical of non-passerines in many respects. Features shared with palaeognaths and the Galloanserae are the conical acrosome, shorter than the nucleus; the presence of a proximal as well as distal centriole; the elonga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cfa1dd9607e294ef6ecb84fcd737bf5
https://doi.org/10.1111/j.1463-6395.2005.00204.x
https://doi.org/10.1111/j.1463-6395.2005.00204.x
Publikováno v:
Journal of Morphology. 262:484-499
Spermiogenesis, known as spermateleosis in lower vertebrates, is the transformation of the round spermatid into a highly specialized spermatozoon with a species-specific structure. Spermateleosis and sperm morphology of two species of caecilians, Ich
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac7ec0ee6d86ad3b1f209f63fac1c60c
https://doi.org/10.1002/jmor.10258
https://doi.org/10.1002/jmor.10258
Publikováno v:
Molecular Reproduction and Development. 70:373-381
The internally fertilizing primitive frog Ascaphus truei (family Ascaphidae) from the Pacific Northwest is the only frog with an intromittent organ. The more advanced neobatrachian frog Eleutherodactylus coqui (family Leptodactylidae) from Puerto Ric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d7292bebd78e438fe2df49a963ba18b
https://doi.org/10.1002/mrd.20207
https://doi.org/10.1002/mrd.20207
Autor:
D. M. Scheltinga, Adrian Antonio Garda, Keith R. McDonald, David Bickford, Sônia Nair Báo, Barrie G. M. Jamieson
Publikováno v:
Acta Zoologica. 83:263-275
Microhylid spermatozoa show the autapomorphic condition of possessing a thin post-mitochondrial cytoplasmic collar. Their spermatozoa are apomorphic in several respects. They have lost the distinct nuclear shoulder, endonuclear canal and axial perfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dec416992af87f6f49e14d8427393aa4
https://doi.org/10.1046/j.1463-6395.2002.00066.x
https://doi.org/10.1046/j.1463-6395.2002.00066.x
Publikováno v:
Canadian Journal of Zoology. 77:1254-1264
We describe the ultrastructure of epididymal spermatozoa of Amphisbaena alba and make comparisons with spermatozoa of other squamates. The mature spermatozoon of A. alba is filiform and characterized by the following features: the acrosome is depress
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d098fe1dac120f8a038c5f1341255b09
https://doi.org/10.1139/z99-089
https://doi.org/10.1139/z99-089
Autor:
John Thomson Soley, Lizette du Plessis
Publikováno v:
Theriogenology. 81(8)
Existing reports on sperm structure in the emu do not adequately illustrate or describe all the salient ultrastructural features necessary for a meaningful comparison of normal and abnormal sperm in this species. As sperm morphology forms an importan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b769238d166b9643262a69271670750
https://pubmed.ncbi.nlm.nih.gov/24581588
https://pubmed.ncbi.nlm.nih.gov/24581588