Article ; Online: Semen characteristics and refrigeration in free-ranging giant anteaters (Myrmecophaga tridactyla).
2015 Volume 84, Issue 9, Page(s) 1572–1580
Abstract: The giant anteater (Myrmecophaga tridactyla) is considered vulnerable to extinction. Scientific data on the reproductive parameters of this species are scarce. Semen from eight free-ranging giant anteaters was collected to establish its characteristics ... ...
Abstract | The giant anteater (Myrmecophaga tridactyla) is considered vulnerable to extinction. Scientific data on the reproductive parameters of this species are scarce. Semen from eight free-ranging giant anteaters was collected to establish its characteristics and the effects of cooling and storage at 5 °C after dilution with the BotuCrio extender without cryoprotectant. The ejaculate presented two distinct sequential fractions, including a whitish fraction, which was milky and rich in sperm cells, and a gel fraction, which was colorless, viscous, and azoospermic. The mean ± standard error of the mean values of the seminal characteristics were as follows: volume of the first fraction, 0.75 ± 0.1 mL; motility, 75 ± 2.9%; vigor, 3.2 ± 0.3; sperm motility index, 68.8 ± 4.3; concentration, 108.5 ± 13.4 × 10(6)/mL; plasma membrane integrity index, 71 ± 4.0%; spermatic defects detected using modified Karras staining, 35.5 ± 3.3%; and spermatic alterations identified by differential interference contrast microscopy, 48.3 ± 6.8%. During refrigeration, the semen presented decreasing motility from 0 to 18 hours, sperm motility index decreased from 0 to 24 hours, and vigor did not change in the first 6 hours and then decreased to 18 hours. |
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MeSH term(s) | Animals ; Male ; Refrigeration ; Semen/cytology ; Semen/physiology ; Semen Analysis/veterinary ; Semen Preservation/methods ; Semen Preservation/veterinary ; Xenarthra/physiology |
Language | English |
Publishing date | 2015-12 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 189232-0 |
ISSN | 1879-3231 ; 0093-691X |
ISSN (online) | 1879-3231 |
ISSN | 0093-691X |
DOI | 10.1016/j.theriogenology.2015.07.041 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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