1 research outputs found
Genetic patterns and conservation of the Scarlet Macaw (Ara macao) in Costa Rica
Once widely distributed throughout the lowland
forests of Costa Rica, scarlet macaws (Ara macao) have
been reduced to two major, geographically separated, pop ulations along the Pacific slope. Past demographic declines
raise conservation concerns regarding the detrimental
effects of population fragmentation. This investigation
aimed to evaluate the current status of scarlet macaws along
the Pacific slope by examining levels of genetic variation
and patterns of genetic structure within and among remnant
populations. Statistical analyses using multilocus genotypes
revealed strong differentiation between Central and South
Pacific populations, suggesting local geographic barriers
have historically restricted gene flow between these locali ties. High genetic diversity suggests neither population
suffers from genetic erosion, likely resulting from relatively
large population sizes and high dispersal capacity and
longevity. However, evidence of disequilibrium within the
Central Pacific population infers anthropogenic threats have
disrupted natural population dynamics. These results advo cate on focusing available resources on habitat restorationUniversidad Nacional, Costa Rica.Instituto Internacional en ConservaciĆ³n y Manejo de Vida Silvestr