Rapid radiation of ant parasitic butterflies during the Miocene aridification of Africa

Espeland, Marianne and Chazot, Nicolas and Condamine, Fabien L.L. and Lemmon, Alan R.R. and Lemmon, Emily Moriarty and Sáfián, Szabolcs (2023) Rapid radiation of ant parasitic butterflies during the Miocene aridification of Africa. ECOLOGY AND EVOLUTION, 13 (5). ISSN 2045-7758

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Official URL: https://doi.org/10.1002/ece3.10046

Abstract

Africa has undergone a progressive aridification during the last 20 My that presumably impacted organisms and fostered the evolution of life history adaptations. We test the hypothesis that shift to living in ant nests and feeding on ant brood by larvae of phyto-predaceous Lepidochrysops butterflies was an adaptive response to the aridification of Africa that facilitated the subsequent radiation of butterflies in this genus. Using anchored hybrid enrichment we constructed a time-calibrated phylogeny for Lepidochrysops and its closest, non-parasitic relatives in the Euchrysops section (Poloyommatini). We estimated ancestral areas across the phylogeny with process-based biogeographical models and diversification rates relying on time-variable and clade-heterogeneous birth-death models. The Euchrysops section originated with the emerging Miombo woodlands about 22 million years ago (Mya) and spread to drier biomes as they became available in the late Miocene. The diversification of the non-parasitic lineages decreased as aridification intensified around 10 Mya, culminating in diversity decline. In contrast, the diversification of the phyto-predaceous Lepidochrysops lineage proceeded rapidly from about 6.5 Mya when this unusual life history likely first evolved. The Miombo woodlands were the cradle for diversification of the Euchrysops section, and our findings are consistent with the hypothesis that aridification during the Miocene selected for a phyto-predaceous life history in species of Lepidochrysops, with ant nests likely providing caterpillars a safe refuge from fire and a source of food when vegetation was scarce.

Tudományterület / tudományág

agricultural sciences > forestry and wildlife management
natural sciences > biological sciences

Faculty

Not relevant

Institution

Soproni Egyetem

Item Type: Article
SWORD Depositor: Teszt Sword
Depositing User: Csaba Horváth
Identification Number: MTMT:33936922
Date Deposited: 05 Jun 2023 08:57
Last Modified: 05 Jun 2023 08:57
URI: http://publicatio.uni-sopron.hu/id/eprint/2714

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