INVESTIGADORES
GONZALEZ Alda
artículos
Título:
Historical biogeography of mygalomorph spiders from the peripampasic orogenic arc based on track analysis and PAE as a panbiogeographical tool.
Autor/es:
FERRETTI, N. GONZÁLEZ, A. & PÉREZ-MILES, F
Revista:
SYSTEMATICS AND BIODIVERSITY
Editorial:
CAMBRIDGE UNIV PRESS
Referencias:
Lugar: Cambridge; Año: 2012 vol. 10 p. 179 - 193
ISSN:
1477-2000
Resumen:
A panbiogeographical analysis of Mygalomorphae spiders was undertaken in order to determine generalized tracks and
biogeographical nodes in the peripampasic orogenic arc. This arc comprises mountainous systems that harbour a high
number of endemic species, while they exhibit biotic connections that have become fragmented probably during Tertiary
tectonics. They are considered relevant areas for biodiversity conservation. A total of 1078 records of 51 Mygalomorphae
species were analysed and ten areas were delimited based on geological data. We used track analysis and parsimony
analysis of endemicity as a panbiogeographical tool. Five generalized tracks and three nodes were recovered. The tracks
recovered in Argentina could be explained as a consequence of two events: (i) Atlantic marine transgressions during the
Middle and Late Miocene; and (ii) changes in the climate of southern South America from the Miocene to Pliocene, caused
by the gradual raising of the Andean chain and also, the additional uplift of Pampean and Subandean ranges. The
southeastern Brazil and Uruguayan generalized tracks could be explained by the Rio de La Plata Craton.