Sligo i my

[Adam Sailsbury]

ÿþThe puma is an iconic predator puma creepers that ranges throughout the Americas, occupying diverse habitats. Previous phylogeographic analyses have revealed that it exhibits moderate levels of genetic structure across its range, with few of the classically recognized subspecies being supported as distinct demographic units. Moreover, most of the species' molecular diversity was found to be in South America. To further investigate the phylogeographic structure and demographic history of pumas we analyzed mtDNA sequences from 186 individuals sampled throughout their range.

Pumas have remarkable dispersal capabilities ( Maehr et al. , 2002 ; Beier et al. , 2003 ) and successfully occupy a diverse array of habitats, illustrating their potential to adapt to the puma rihanna breadth of environmental conditions occurring across the continent, from tropical forests and marshes to dry scrubland and cold Andean or Patagonian biomes ( Redford and Eisenberg, 1992 ; Nowak, 1999 ). Pumas are solitary and territorial, with puma fenty large home ranges.

However, since the credibility interval of this estimate slightly overlaps the timing of the GABI, this issue is still not fully settled. Interestingly, Barnett et al. (2005) provided molecular evidence indicating that the extinct North American felid Miracinonyx trumani is the puma's closest relative, with a divergence time estimated at 3.19 MYA. This finding would support the hypothesis of a North American origin for the puma, with subsequent colonization of South puma slides America by this species.

In a thorough study of puma phylogeography, Culver et al. (2000) assessed the current and historical genetic diversity present in this species, based on a large sampling of individuals from across its range. That study indicated that most of the 32 classical puma subspecies did not correspond to definable genetic units and reduced the number of recognized subspecies to six. Four of these subspecies were distributed in South America.

Indicating that most of the species' historical subdivision occurred in that subcontinent. In addition, the genetic diversity within South America was found to be larger than in Central and North America, suggesting that pumas from the latter subcontinent actually derive from a recent re-colonization event, following extinction in North America puma fenty slides in the Late Pleistocene (ca. 10,000 12,000 years ago).Within the mtDNA, the NADH dehydrogenase subunit 5 ( ND5 ) gene has been successfully used in phylogenetic and phylogeographic studies of felids and other carnivores ( e.g. Culver et al.

So as to allow refined inferences of population structure, maternal gene flow and demographic history. In addition to expanding the geographic coverage of South American regions to refine inferences on patterns of matrilineal subdivision, we have performed novel analyses on puma demographic history, which revealed consistent evidence of a recent population expansion in South America, prior to re-colonization of North America.

[Reklama]