Bear

Have we conquered sperm morphology analysis in different mammalian species as analysed by CASMA?

By |2022-05-04T15:56:06+02:00July 23rd, 2021|, , , , , , , , , , , , , , , , , , , , |

Have we conquered sperm morphology analysis in different mammalian species as analysed by CASMA? Gerhard van der Horst, Stefan S. du Plessis, Liana Maree Department of Medical Biosciences, University of the Western Cape, Bellville, South Africa; Department of Basic Sciences, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates; Division of Medical [...]

Processes and Data Management of Computer-Aided Sperm Analysis in Human and Animal Spermatozoa

By |2022-05-04T15:58:21+02:00July 23rd, 2021|, , , , , , , , , , , , , , , , , , , , , , , , , , , |

Processes and Data Management of Computer-Aided Sperm Analysis in Human and Animal Spermatozoa Gerhard van der Horst Department of Medical Biosciences, University of the Western Cape, Bellville, South Africa Abstract: Computer-Aided Sperm Analysis (CASA) has been revolutionized in the last two decades. It is now possible to measure a vast range of sperm characteristics such as sperm [...]

Status of Sperm Functionality Assessment in Wildlife Species: From Fish to Primates

By |2021-06-10T09:56:59+02:00May 21st, 2021|, , , , , , , , , |

Status of Sperm Functionality Assessment in Wildlife Species: From Fish to Primates Gerhard van der Horst Comparative Spermatology Laboratory, Department of Medical Bioscience, University of the Western Cape, Bellville, Cape Town 7535, South Africa Abstract: (1) Background: in order to propagate wildlife species (covering the whole spectrum from species suitable for aquaculture to endangered species), [...]

The future of computer-aided sperm analysis

By |2022-05-04T15:56:56+02:00April 29th, 2015|, , , , , , , , , , , , , , , , , , , , , , , , , , , , |

The future of computer-aided sperm analysis Sharon T Mortimer, Gerhard Van der Horst, David Mortimer Oozoa Biomedical Inc, West Vancouver, BC, Canada; University of the Western Cape, Bellville, South Africa Computer-aided sperm analysis (CASA) technology was developed in the late 1980s for analyzing sperm movement characteristics or kinematics and has been highly successful in enabling [...]

Quality of frozen-thawed semen in brown bear is not affected by timing of glycerol addition

By |2015-05-08T10:56:35+02:00May 1st, 2011|, |

Quality of frozen-thawed semen in brown bear is not affected by timing of glycerol addition Alvarez-Rodríguez M, Alvarez M, Gomes-Alves S, Borragan S, Martinez-Pastor F, de Paz P, Anel L. University of León, 24071 León, Spain. We have tested several freezing protocols for brown bear semen, modifying the time when glycerol was added (before and [...]

Study of three consecutive electroejaculations in brown bear (Ursus Arctos)

By |2016-12-30T09:48:30+01:00December 9th, 2008|, |

Study of three consecutive electroejaculations in brown bear (Ursus Arctos) L. Anel, S. Borragan, M. Alvarez, F. Martinez-Pastor, M. Mata-Campuzano, S. Gomes-Alves, E. Anel, P. de Paz University of León, León, Spain; Cabárceno Nature Park, Cantabria, Spain; IREC (CSIC-UCLM-JCCM), Albacete, Castilla-La Mancha, Spain The preservation of threatened species, such as the cantabric brown bear, requires [...]

Effects of cryopreservation on head morphometry and its relation with chromatin status in brown bear (Ursus arctos) spermatozoa

By |2016-12-30T09:48:30+01:00December 1st, 2008|, |

Effects of cryopreservation on head morphometry and its relation with chromatin status in brown bear (Ursus arctos) spermatozoa Alvarez M, García-Macías V, Martínez-Pastor F, Martínez F, Borragán S, Mata M, Garde J, Anel L, De Paz P Animal Reproduction and Obstetrics, University of León, 24071 León, Spain The Cantabrian brown bear (Ursus arctos) is a [...]

Effect of spermatozoa head morphometric dimensions on freezability in brown bear (Ursus Arctos)

By |2016-12-30T09:48:33+01:00December 12th, 2006|, |

Effect of spermatozoa head morphometric dimensions on freezability in brown bear (Ursus Arctos) L. Anel, V. Garcia-Macias, F. Martinez-Pastor, M. Alvarez, S. Borragan, J. Bernardo, S. Alves, P. Paz Universidad de León, León, Castille and León, Spain Having recently observed that survival of red deer spermatozoa after cryopreservation seemed to reflect the size of sperm [...]

Morphometric and chromatin assessment in brown bear (Ursus Arctos) ejaculated spermatozoa

By |2016-12-30T09:48:33+01:00January 1st, 2006|, |

Morphometric and chromatin assessment in brown bear (Ursus Arctos) ejaculated spermatozoa V García-Macías, F Martínez-Pastor, P Paz, M Álvarez, S Borragan, F Martínez, E Anel and L Anel Animal Reproduction, Cell Biology and Anatomy, University of León, Cabarceno Park, Cantabria, Spain The Brown bear is a highly endangered species in Spain. The study of its [...]

Morphometric characterization of epididymal and ejaculated spermatozoa from brown bear (Ursus Arctos)

By |2016-12-30T09:48:33+01:00December 14th, 2005|, |

Morphometric characterization of epididymal and ejaculated spermatozoa from brown bear (Ursus Arctos) V. Garcia-Macias, F. Martinez-Pastor, M. Alvarez, P. Paz, S. Borragan, M. Celada, E. Anel and L. Anel Reproduction and Obstetrics, University of León, León, Spain; Cell Biology, University of León, León, Spain; Cabarceno Park, Cantabria, Spain Sperm morphology is an useful characteristic for [...]