Assisted reproduction for felid species conservation-Sperm competences at risk.

Autor: Müller K; Department Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany., Eder S; Department Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany., Jakop U; Department Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany., Schiller J; Medical Faculty, Institute of Medical Physics and Biophysics, University of Leipzig, Leipzig, Germany., Müller P; Department of Biology, Humboldt-University Berlin, Berlin, Germany., Bashawat M; Department Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany.
Jazyk: angličtina
Zdroj: Reproduction in domestic animals = Zuchthygiene [Reprod Domest Anim] 2020 Jul; Vol. 55 Suppl 2, pp. 55-60. Date of Electronic Publication: 2019 Dec 26.
DOI: 10.1111/rda.13581
Abstrakt: Cryobanking of gametes in combination with artificial insemination is an essential option to support conservation programmes for endangered and threatened species. About two-thirds of the felid species are classified as 'near threatened', 'vulnerable' or 'endangered' (www.cites.org), and mostly, epididymal sperm are collected from euthanized or castrated male felids and cryopreserved. However, epididymal compared with ejaculated and cryopreserved compared with fresh sperm have a limited potential to fertilize if vaginal non-surgical insemination is applied in feline species. Missing or highly diluted seminal fluid in epididymal and cryopreserved sperm, as well as a potential interference of extender ingredients with the natural interactive properties of sperm in the female genital tract is discussed as potential drawback which hampers a proper sperm transit and fertilization besides the limited longevity of cryopreserved feline sperm. Individual components in seminal fluid as well as cryoextenders may adversely alter sperm properties and have a different impact on fertility and preservation success. The identification and investigation of beneficial as well as detrimental components is a precondition to deduce options for improving the process of cryopreservation in felids, particularly, if only epididymal sperm are available.
(© 2019 The Authors. Reproduction in Domestic Animals published by Blackwell Verlag GmbH.)
Databáze: MEDLINE
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