A test of the riverine barrier hypothesis in the largest subtropical river basin in the neotropics

Leonardo Campagna, Cecilia Kopuchian, Darío A. Lijtmaer, Gustavo S. Cabanne, Natalia C. García, Pablo D. Lavinia, Pablo L. Tubaro, Irby Lovette & Adrián S. Di Giacomo
The riverine barrier hypothesis proposes that large rivers represent geographic barriers to gene flow for terrestrial organisms, leading to population differentiation and ultimately allopatric speciation. Here we asses for the first time if the subtropical Paraná-Paraguay River system in the Del Plata basin, second in size among South American drainages, acts as a barrier to gene flow for birds. We analyzed the degree of mitochondrial and nuclear genomic differentiation in seven species with known subspecies...
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These counts follow the COUNTER Code of Practice, meaning that Internet robots and repeats within a certain time frame are excluded.
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