Polar bear use of a persistent food subsidy: Insights from non-invasive genetic sampling in Alaska

Ursus ◽  
2013 ◽  
Vol 24 (2) ◽  
pp. 148-163 ◽  
Author(s):  
Jason Herreman ◽  
Elizabeth Peacock
2003 ◽  
Vol 6 (1) ◽  
pp. 83-92 ◽  
Author(s):  
Nathaniel Valière ◽  
Luca Fumagalli ◽  
Ludovic Gielly ◽  
Christian Miquel ◽  
Benoît Lequette ◽  
...  

2018 ◽  
Vol 45 (4) ◽  
pp. 366 ◽  
Author(s):  
Faye Wedrowicz ◽  
Jennifer Mosse ◽  
Wendy Wright ◽  
Fiona E. Hogan

Context Pathogenic infections are an important consideration for the conservation of native species, but obtaining such data from wild populations can be expensive and difficult. Two pathogens have been implicated in the decline of some koala (Phascolarctos cinereus) populations: urogenital infection with Chlamydia pecorum and koala retrovirus subgroup A (KoRV-A). Pathogen data for a wild koala population of conservation importance in South Gippsland, Victoria are essentially absent. Aims This study uses non-invasive sampling of koala scats to provide prevalence and genotype data for C. pecorum and KoRV-A in the South Gippsland koala population, and compares pathogen prevalence between wild koalas and koalas in rescue shelters. Methods C. pecorum and KoRV-A provirus were detected by PCR of DNA isolated from scats collected in the field. Pathogen genetic variation was investigated using DNA sequencing of the C. pecorum ompA and KoRV-A env genes. Key results C. pecorum and KoRV-A were detected in 61% and 27% of wild South Gippsland individuals tested, respectively. KoRV-A infection tended to be higher in shelter koalas compared with wild koalas. In contrast with other Victorian koala populations sampled, greater pathogen diversity was present in South Gippsland. Conclusions In the South Gippsland koala population, C. pecorum is widespread and common whereas KoRV appears less prevalent than previously thought. Further work exploring the dynamics of these pathogens in South Gippsland koalas is warranted and may help inform future conservation strategies for this important population. Implications Non-invasive genetic sampling from scats is a powerful method for obtaining data regarding pathogen prevalence and diversity in wildlife. The use of non-invasive methods for the study of pathogens may help fill research gaps in a way that would be difficult or expensive to achieve using traditional methods.


Diversity ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 570
Author(s):  
Miriam A. Zemanova ◽  
Daniel Ramp

Dispersal is a key process for population persistence, particularly in fragmented landscapes. Connectivity between habitat fragments can be easily estimated by quantifying gene flow among subpopulations. However, the focus in ecological research has been on endangered species, typically excluding species that are not of current conservation concern. Consequently, our current understanding of the behaviour and persistence of many species is incomplete. A case in point is the eastern grey kangaroo (Macropus giganteus), an Australian herbivore that is subjected to considerable harvesting and population control efforts. In this study, we used non-invasive genetic sampling of eastern grey kangaroos within and outside of the Mourachan Conservation Property to assess functional connectivity. In total, we genotyped 232 samples collected from 17 locations at 20 microsatellite loci. The clustering algorithm indicated the presence of two clusters, with some overlap between the groups within and outside of the reserve. This genetic assessment should be repeated in 10–15 years to observe changes in population structure and gene flow over time, monitoring the potential impact of the planned exclusion fencing around the reserve.


2013 ◽  
Vol 21 (3) ◽  
pp. 215-222 ◽  
Author(s):  
L Lieber ◽  
S Berrow ◽  
E Johnston ◽  
G Hall ◽  
J Hall ◽  
...  

1998 ◽  
Vol 13 (1) ◽  
pp. 26-27 ◽  
Author(s):  
Pierre Taberlet ◽  
Lisette P Waits

2006 ◽  
Vol 8 (1) ◽  
pp. 69-78 ◽  
Author(s):  
Nathaniel Valière ◽  
Christophe Bonenfant ◽  
Carole Toïgo ◽  
Gordon Luikart ◽  
Jean-Michel Gaillard ◽  
...  

2020 ◽  
Vol 65 (2) ◽  
pp. 191-202 ◽  
Author(s):  
Marcia Sittenthaler ◽  
Eva Maria Schöll ◽  
Christoph Leeb ◽  
Elisabeth Haring ◽  
Rosemarie Parz-Gollner ◽  
...  

2013 ◽  
Vol 36 (1) ◽  
pp. 129-133 ◽  
Author(s):  
Flavia T. Presti ◽  
Janaína Meyer ◽  
Paulo T.Z. Antas ◽  
Neiva M.R. Guedes ◽  
Cristina Y. Miyaki

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