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Santos MDCB, Aquino LVC, Nascimento MB, Silva MB, Rodrigues LLV, Praxedes ÉA, Oliveira LRM, Silva HVR, Nunes TGP, Oliveira MF, Pereira AF. Evaluation of different skin regions derived from a postmortem jaguar, Panthera onca (Linnaeus, 1758), after vitrification for development of cryobanks from captive animals. Zoo Biol 2021; 40:280-287. [PMID: 33739467 DOI: 10.1002/zoo.21605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 02/23/2021] [Accepted: 03/10/2021] [Indexed: 11/10/2022]
Abstract
Biological resource banks represent valuable tools for the conservation of species vulnerable to extinction, such as the jaguar. Cryobanks of skins have the potential to safeguard rare genotypes, allowing the potential exploitation of biological samples in animal multiplication technologies and the study of genetic variability. Determination of the most suitable skin regions for tissue conservation can help increase the efficiency of cryobanks and the storage of biological samples. To this end, we evaluated the effects of vitrification of skin tissues from the ear, caudal, and femoral regions of a post-mortem jaguar belonging to a zoo in Brazil. Non-vitrified and vitrified samples were evaluated and compared using quantitative methods, focusing on skin thickness, cell quantification, number of perinuclear halos, collagen and elastic density, and proliferative activity. No differences were observed in skin thickness, number of perinuclear halos, elastic density, and proliferative activity between non-vitrified and vitrified tissues in skin from any region. However, vitrified tissues derived from femoral skin showed a reduction in the number of fibroblasts, epidermal cells and collagen density compared to non-vitrified tissues. In summary, the ear and caudal regions provided the best conservation of somatic tissues derived from jaguars, and skin samples from these regions are therefore the most suitable for the formation of cryobanks.
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Affiliation(s)
- Maria D C B Santos
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid, Mossoro, Rio Grande do Norte, Brazil
| | - Leonardo V C Aquino
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid, Mossoro, Rio Grande do Norte, Brazil
| | - Matheus B Nascimento
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid, Mossoro, Rio Grande do Norte, Brazil
| | - Maria B Silva
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid, Mossoro, Rio Grande do Norte, Brazil
| | - Luanna L V Rodrigues
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid, Mossoro, Rio Grande do Norte, Brazil
| | - Érika A Praxedes
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid, Mossoro, Rio Grande do Norte, Brazil
| | - Lhara R M Oliveira
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid, Mossoro, Rio Grande do Norte, Brazil
| | - Herlon V R Silva
- Laboratory of Carnivores Reproduction, Faculty of Veterinary, Ceara State University, Fortaleza, Ceará, Brazil
| | - Thalles G P Nunes
- Laboratory of Carnivores Reproduction, Faculty of Veterinary, Ceara State University, Fortaleza, Ceará, Brazil
| | - Moacir F Oliveira
- Laboratory of Apllied Animal Morphophysiology, Center for Agricultural Sciences, UFERSA, Mossoro, Rio Grande do Norte, Brazil
| | - Alexsandra F Pereira
- Laboratory of Animal Biotechnology, Center for Biological and Health Sciences, Federal Rural University of Semi-Arid, Mossoro, Rio Grande do Norte, Brazil
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