Did genetic lineage divergence or spatial environmental variance lead to global subspecies differentiation of northern goshawk (Accipiter gentilis)?
Un-Hyang Ho
Sam-Rang Song
10.6084/m9.figshare.11993898.v1
https://brill.figshare.com/articles/journal_contribution/Did_genetic_lineage_divergence_or_spatial_environmental_variance_lead_to_global_subspecies_differentiation_of_northern_goshawk_Accipiter_gentilis_/11993898
<p>When a widely
distributed species undergoes ecological or geological isolation, it tends to
divide into subspecies. In general, subspecies differentiation is affected by
environmental variance and genetic divergence. But the extent to which these
two factors influence subspecies differentiation in species with different
distribution ranges and modes of living, might be different. Despite having
high breeding habitat fidelity, northern goshawk is a forest raptor that is
widely dispersed. We investigated morphological traits in combination with the genetic
background of northern goshawk individuals at a large global scale. We also
collected genetic, palynological and climatic data to reveal what caused global
subspecies differentiation in northern goshawk. Eurasian and North American subspecies
populations are thought to have diverged approximately 660,000 years ago to
undergo different evolutionary routes, which remarkably facilitated
intercontinental subspecies differentiation through genetic lineage divergence.
During the last glacial period (18,000 years ago) the different isolation levels
of northern goshawk refugia on the continents caused genetic lineage divergences,
which, however, are unlikely to have led to subspecies differentiation
directly. Spatial environmental variance due to the wide distribution of
northern goshawks made an important contribution to subspecies differentiation
throughout continents.</p>
2020-05-20 06:12:43
Accipiter gentilis
genetic lineage divergence
glaciation
mitochondrial haplotype
nucleic DNA microsatellite
spatial environmental variance
Evolutionary Biology not elsewhere classified