INVESTIGADORES
ARETA Juan Ignacio
artículos
Título:
Behavior and phylogenetic position of Premnoplex barbtails (Furnariidae)
Autor/es:
ARETA JI
Revista:
THE CONDOR
Referencias:
Año: 2007 p. 399 - 407
ISSN:
0010-5422
Resumen:
The Margarornis assemblage includes four genera: Margarornis, Premnoplex,Premnornis, and Roraimia, all thought to be closely related. Differences invocalizations and habitat use between Premnoplex brunnescens (Spotted Barbtail) andP. tatei (White-throated Barbtail) are consistent with their full species status. In light ofthe weak anatomical (hindlimb musculature) evidence supporting the inclusion ofPremnornis in the Margarornis assemblage, the convergence-prone nature of charactersassociated with climbing habits, and the differences in their nests and foraging behavior, Ipropose that Premnornis is not a member of the Margarornis assemblage and thatPremnoplex is closely related only to Margarornis. These results are supported by recentmolecular phylogenetic analyses. Although Roraimia differs in plumage, tail shape, andsong from other members of the Margarornis assemblage, it must be provisionallyincluded in the assemblage until evidence clarifies its phylogenetic position.
