Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

The role of clade competi… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

The role of clade competition in the diversification of North American canids

Artikel i vetenskaplig tidskrift
Författare Daniele Silvestro
Alexandre Antonelli
N. Salamin
T. B. Quental
Publicerad i Proceedings of the National Academy of Sciences of the United States of America
Volym 112
Nummer/häfte 28
Sidor 8684-8689
ISSN 0027-8424
Publiceringsår 2015
Publicerad vid Institutionen för biologi och miljövetenskap
Sidor 8684-8689
Språk en
Länkar dx.doi.org/10.1073/pnas.1502803112
Ämnesord mammals, speciation, extinction, macroevolution, fossils, FOSSIL RECORD, EVOLUTIONARY RADIATION, CLIMATE-CHANGE, COPES RULE, RED, QUEEN, EXTINCTION, MAMMALS, DIVERSITY, ORIGINATION, SPECIATION, Multidisciplinary Sciences
Ämneskategorier Ekologi, Evolutionsbiologi

Sammanfattning

The history of biodiversity is characterized by a continual replacement of branches in the tree of life. The rise and demise of these branches (clades) are ultimately determined by changes in speciation and extinction rates, often interpreted as a response to varying abiotic and biotic factors. However, understanding the relative importance of these factors remains a major challenge in evolutionary biology. Here we analyze the rich North American fossil record of the dog family Canidae and of other carnivores to tease apart the roles of competition, body size evolution, and climate change on the sequential replacement of three canid sub-families (two of which have gone extinct). We develop a novel Bayesian analytic framework to show that competition from multiple carnivore clades successively drove the demise and replacement of the two extinct canid subfamilies by increasing their extinction rates and suppressing their speciation. Competitive effects have likely come from ecologically similar species from both canid and felid clades. These results imply that competition among entire clades, generally considered a rare process, can play a more substantial role than climate change and body size evolution in determining the sequential rise and decline of clades.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?