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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Palaeoenvironmental shifts drove the adaptive radiation of a noctuid stemborer tribe (lepidoptera, noctuidae, apameini) in the Miocene
PLoS ONE, Volume 7, No. 7, Article e41377, Year 2012
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Description
Between the late Oligocene and the early Miocene, climatic changes have shattered the faunal and floral communities and drove the apparition of new ecological niches. Grassland biomes began to supplant forestlands, thus favouring a large-scale ecosystem turnover. The independent adaptive radiations of several mammal lineages through the evolution of key innovations are classic examples of these changes. However, little is known concerning the evolutionary history of other herbivorous groups in relation with this modified environment. It is especially the case in phytophagous insect communities, which have been rarely studied in this context despite their ecological importance. Here, we investigate the phylogenetic and evolutionary patterns of grass-specialist moths from the species-rich tribe Apameini (Lepidoptera, Noctuidae). The molecular dating analyses carried out over the corresponding phylogenetic framework reveal an origin around 29 million years ago for the Apameini. Ancestral state reconstructions indicate (i) a potential Palaearctic origin of the tribe Apameini associated with a major dispersal event in Afrotropics for the subtribe Sesamiina; (ii) a recent colonization from Palaearctic of the New World and Oriental regions by several independent lineages; and (iii) an ancestral association of the tribe Apameini over grasses (Poaceae). Diversification analyses indicate that diversification rates have not remained constant during the evolution of the group, as underlined by a significant shift in diversification rates during the early Miocene. Interestingly, this age estimate is congruent with the development of grasslands at this time. Rather than clade ages, variations in diversification rates among genera better explain the current differences in species diversity. Our results underpin a potential adaptive radiation of these phytophagous moths with the family Poaceae in relation with the major environmental shifts that have occurred in the Miocene. © 2012 Toussaint et al.
Available Materials
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https://efashare.b-cdn.net/share/pmc/articles/PMC3409182/bin/pone.0041377.s004.docx
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https://efashare.b-cdn.net/share/pmc/articles/PMC3409182/bin/pone.0041377.s007.docx
https://efashare.b-cdn.net/share/pmc/articles/PMC3409182/bin/pone.0041377.s008.docx
Authors & Co-Authors
Toussaint, Emmanuel F.A.
Unknown Affiliation
Condamine, Fabien L.
France, Palaiseau
Centre de Mathématiques Appliquées
Kergoat, Gaël Joseph
France, Montpellier
Inrae's Occitanie-montpellier Centre
Capdevielle-Dulac, Claire
France, Paris
Cnrs Centre National de la Recherche Scientifique
France, Orsay
Université Paris-sud
Barbut, Jérôme
France, Paris
Museum National D'histoire Naturelle
Silvain, Jean François
France, Paris
Cnrs Centre National de la Recherche Scientifique
France, Orsay
Université Paris-sud
Le Rû, Bruno Pierre
Kenya, Nairobi
International Centre of Insect Physiology and Ecology Nairobi
France, Orsay
Université Paris-sud
Statistics
Citations: 45
Authors: 7
Affiliations: 6
Identifiers
Doi:
10.1371/journal.pone.0041377
e-ISSN:
19326203
Research Areas
Cancer
Environmental