2024-03-28T20:24:05Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1078792018-09-27T07:34:34Zcom_10261_9676com_10261_8col_10261_9679
Phylogeography of the geckos of the genus Haemodracon (Bauer, Good and Branch, 1997) endemic to the Socotra Archipelago (NW Indian Ocean)
Simón, Marc
Gómez-Díaz, Elena
Mora, Elisa
Fasola, Mauro
Pupin, Fabio
Sindaco, Roberto
Carranza, Salvador
Trabajo presentado en el I Congreso Ibérico de Sistemática Animal (CISA2012), celebrado en Madrid del 17 al 19 de enero de 2012.
Despite the biogeographical and evolutionary interest of Socotra Archipelago as a part
of the Gondwana supercontinent, very little is known about the origin, the tempo and
the speciation mode its unique fauna (vicariance, colonization or intra-island
diversification). The genus Haemodracon from Socotra include two species of
endemic geckos, H. trachyrhinus and H. ribeckii, which are distributed in three
different Socotran Islands (Socotra, Darsa and Samha). The two taxa are mostly found
in sympatry and greatly differ in their behaviour, morphology and ecology. Yet we
know little about their origin and evolutionary relationships, and in the particular case
of H. trachyrhinus (Boulenger, 1899), it has never been included in any phylogenetic
analysis. In the present study we try to shed some light in these issues, by assembling
a dataset including 23 specimens of H. ribeckii (Peters, 1882) and 28 of H.
trachyrhinus plus some representatives of its sister taxa from mainland Arabia, i.e.
geckos of the genus Asaccus (Dixon & Anderson, 1973). All the specimens were
sequenced for up to three mitochondrial (cytochrome b, 12S rRNA and 16S rRNA)
and four nuclear genes (c-mos, ACM4, MC1R and RAG2) and their relationships
assessed using both phylogenetic and population genetic analyses. The results indicate
that both species probably have a vicariant origin and diverged when the Socotra
Archipelago had already drifted from mainland (about 17 My ago). Interestingly, the
two species present high level of intra-specific genetic variability within Socotra. We
discuss the main factors that may have promoted both speciation and intra-island
diversification in the genus Haemodracon taking into account the geophysical and
climatic events that have shaped the biogeographic history of the Socotra
Archipelago.
Peer reviewed
2014-11-21T08:55:45Z
2014-11-21T08:55:45Z
2012-01
póster de congreso
http://purl.org/coar/resource_type/c_6670
I Congreso Ibérico de Sistemática Animal (2012)
http://hdl.handle.net/10261/107879
en
Sí
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