Abstract
We evaluated the possibility of deriving primary cell cultures from tissue biopsies taken in field conditions from six threaten endemic Chilean species of free-ranging mammals. Biopsies were taken either by ear punching or darts fired to animals and hold in hypothermic conditions (4° C) in defined salt solution for time periods ranging from 0 to 7 d before biopsy samples reached the cell culture laboratory. Previously, holding times were evaluated in experimental cows in controlled conditions. Two enzymatic treatments, collagenase alone or collagenase followed by tripsin, were used to disaggregate tissues for cell culture. We found that ear notches and dart-derived biopsies can be storaged at 4° C for 1 wk and still yield primary cultures. For dart-derived biopsies, there was an invert correlation between length of cold storage and cellular viability in culture. Healthy fibroblast cell lines were obtained in 92% of the biopsies taken despite the origin (punch or biopsy). We are not aware of similar study for free-ranging animals, especially for the use of darting system to biopsy wild terrestrial mammals, we believe that our results could help for a more widespread implementation of these procedures in the practice of ex situ conservation
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Acknowledgements
Authors wish to acknowledge M.L. Houck from CRES of the San Diego Zoo and L Nel-Thermat from Audubon Center for Research of Endangered Species in Louisina for help with detailed protocols and encouraging support. We also wish to thank Mr. Oscar Guineo for his help in huemul’s field work. This research was partially funded by FIA from Ministry of Agriculture of Chile, under grant number: PIC-2005-1-P-097. Appropriate permits for capturing wild species were obtained from Servicio Agrícola y Ganadero (SAG) of Chile (# 1804 from 04.19.2006 for kod kod; # 1337 from 03.20.2006 for Chilean Shrew opposum; # 1851 from 04.21.2006 for huemul; # 1963 from 05.02.2006 for chinchilla) and from CONAF (Corporación Nacional Forestal de Chile) under permit numbers: (335 from 04.25.2006 for Chilean Shrew opposum; 010 from 05.30.2006 for chinchilla; and 1182 from 04.02.2007 for huemul).
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Tovar, H., Navarrete, F., Rodríguez, L. et al. Cold storage of biopsies from wild endangered native Chilean species in field conditions and subsequent isolation of primary culture cell lines. In Vitro Cell.Dev.Biol.-Animal 44, 309–320 (2008). https://doi.org/10.1007/s11626-008-9124-y
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DOI: https://doi.org/10.1007/s11626-008-9124-y