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Population size of lions in Yankari Game Reserve as revealed by faecal DNA sampling

Tende, Talatu; Ottosson, Ulf; Hansson, Bengt LU ; Åkesson, Mikael LU and Bensch, Staffan LU (2010) In African Journal of Ecology 48(4). p.949-952
Abstract
Studies have shown that lion (Panthera leo) populations in West Africa are small, isolated and fragmented. In Nigeria, lions have disappeared from unprotected areas and are nowadays found only in parks and reserves where these populations may still decline. It is therefore urgent to obtain reliable estimates of population sizes at different localities. Direct observational surveys may either fail to count all individuals or count some individuals repeatedly and are therefore associated with unknown levels of estimation errors. More accurate estimates can be obtained if direct counting is combined with DNA-based individual identification. As lions are difficult to identify individually, presented here is a method that can be a valuable... (More)
Studies have shown that lion (Panthera leo) populations in West Africa are small, isolated and fragmented. In Nigeria, lions have disappeared from unprotected areas and are nowadays found only in parks and reserves where these populations may still decline. It is therefore urgent to obtain reliable estimates of population sizes at different localities. Direct observational surveys may either fail to count all individuals or count some individuals repeatedly and are therefore associated with unknown levels of estimation errors. More accurate estimates can be obtained if direct counting is combined with DNA-based individual identification. As lions are difficult to identify individually, presented here is a method that can be a valuable addition to the existing census methods.Resume Des etudes ont montre que les populations de lions Panthera leo d'Afrique de l'Ouest sont petites, isolees et fragmentees. Au Nigeria, les lions ont disparu des zones non protegees et ne se trouvent plus aujourd'hui que dans des parcs et des reserves ou leurs populations peuvent d'ailleurs encore decliner. Il est donc urgent d'avoir des estimations fiables de la taille des populations en differents endroits. Les etudes par observations directes risquent de ne pas reussir a compter tous les individus ou, a l'oppose, d'en compter certains plusieurs fois, et on les associe des lors de niveaux d'erreur d'estimation inconnus. On peut obtenir des estimations plus precises si les comptages directs sont combines avec des identifications individuelles basees sur des analyses d'ADN. Comme les lions sont difficiles a identifier individuellement, voici presentee ici une methode qui peut etre un ajout interessant aux methodes de recensement existantes. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
noninvasive sampling, faecal DNA, isolated population, African lion
in
African Journal of Ecology
volume
48
issue
4
pages
949 - 952
publisher
Wiley-Blackwell
external identifiers
  • wos:000284118400013
  • scopus:78449243050
ISSN
1365-2028
DOI
10.1111/j.1365-2028.2009.01196.x
language
English
LU publication?
yes
id
2bca7eba-341c-4012-bc5b-ed60e1ae9a22 (old id 1751989)
date added to LUP
2010-12-29 14:43:08
date last changed
2018-05-29 12:00:35
@article{2bca7eba-341c-4012-bc5b-ed60e1ae9a22,
  abstract     = {Studies have shown that lion (Panthera leo) populations in West Africa are small, isolated and fragmented. In Nigeria, lions have disappeared from unprotected areas and are nowadays found only in parks and reserves where these populations may still decline. It is therefore urgent to obtain reliable estimates of population sizes at different localities. Direct observational surveys may either fail to count all individuals or count some individuals repeatedly and are therefore associated with unknown levels of estimation errors. More accurate estimates can be obtained if direct counting is combined with DNA-based individual identification. As lions are difficult to identify individually, presented here is a method that can be a valuable addition to the existing census methods.Resume Des etudes ont montre que les populations de lions Panthera leo d'Afrique de l'Ouest sont petites, isolees et fragmentees. Au Nigeria, les lions ont disparu des zones non protegees et ne se trouvent plus aujourd'hui que dans des parcs et des reserves ou leurs populations peuvent d'ailleurs encore decliner. Il est donc urgent d'avoir des estimations fiables de la taille des populations en differents endroits. Les etudes par observations directes risquent de ne pas reussir a compter tous les individus ou, a l'oppose, d'en compter certains plusieurs fois, et on les associe des lors de niveaux d'erreur d'estimation inconnus. On peut obtenir des estimations plus precises si les comptages directs sont combines avec des identifications individuelles basees sur des analyses d'ADN. Comme les lions sont difficiles a identifier individuellement, voici presentee ici une methode qui peut etre un ajout interessant aux methodes de recensement existantes.},
  author       = {Tende, Talatu and Ottosson, Ulf and Hansson, Bengt and Åkesson, Mikael and Bensch, Staffan},
  issn         = {1365-2028},
  keyword      = {noninvasive sampling,faecal DNA,isolated population,African lion},
  language     = {eng},
  number       = {4},
  pages        = {949--952},
  publisher    = {Wiley-Blackwell},
  series       = {African Journal of Ecology},
  title        = {Population size of lions in Yankari Game Reserve as revealed by faecal DNA sampling},
  url          = {http://dx.doi.org/10.1111/j.1365-2028.2009.01196.x},
  volume       = {48},
  year         = {2010},
}