A Maladaptive Combination of Traits Contributes to the Maintenance of a Drosophila Hybrid Zone

Current Biology : CB
Brandon S CooperDaniel R Matute

Abstract

Drosophila teissieri and D. yakuba diverged approximately 3 mya and are thought to share a large, ancestral, African range [1-3]. These species now co-occur in parts of continental Africa and in west Africa on the island of Bioko [1, 4]. While D. yakuba is a human commensal, D. teissieri seems to be associated with Parinari fruits, restricting its range to forests [4-6]. Genome data indicate introgression, despite no evidence of contemporary hybridization. Here we report the discovery of D. yakuba-D. teissieri hybrids at the interface of secondary forests and disturbed, open habitats on Bioko. We demonstrate that hybrids are the F1 progeny of D. yakuba females and D. teissieri males. At high temperatures like those found on Bioko, D. teissieri females are generally less receptive to mating, and in combination with temperature effects on egg lay and egg-to-adult viability, this decreases the potential for gene flow between female D. teissieri and male D. yakuba relative to the reciprocal cross. Field and laboratory experiments demonstrate that F1 hybrids have a maladaptive combination of D. yakuba behavior and D. teissieri physiology, generating additional barriers to gene flow. Nevertheless, analysis of introgressed and non-int...Continue Reading

Citations

Apr 20, 2019·Evolution; International Journal of Organic Evolution·Megan K MeanyBrandon S Cooper
Dec 21, 2019·Evolution; International Journal of Organic Evolution·Christopher J Battey
Mar 4, 2020·Insects·Rik ClymansPatrick De Clercq
Jul 18, 2019·Royal Society Open Science·Tarun GuptaBrent L Lockwood
Jul 14, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jenn M Coughlan, Daniel R Matute
Jan 26, 2021·Evolution; International Journal of Organic Evolution·Daniel R Matute, Brandon S Cooper
Feb 21, 2021·Neuron·Nicholas Jourjine, Hopi E Hoekstra
May 11, 2021·Molecular Ecology·Kyle A O'ConnellRayna C Bell
May 28, 2021·Evolution; International Journal of Organic Evolution·Antonio Serrato-CapuchinaDaniel R Matute
Jul 1, 2021·Ecology and Evolution·Alexandre E PeluffoVirginie Courtier-Orgogozo

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